Tác giả: Haianh

Vietnam Could Become Asia’s Green Hydrogen Production Hub Due to Vast Resources

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Leveraging its vast marine resources along with ample sunshine and wind, Vietnam has the potential to become Asia’s green hydrogen production hub.

Ms. Huynh Thi Kim Quyen – president and general director The Green Solutions Group Joint Stock Company

This perspective was shared by Ms. Huynh Thi Kim Quyen, CEO of The Green Solutions Group, at a conference on Vietnam’s Hydrogen Energy Development Strategy through 2030, with a vision to 2050, organized by the Ministry of Industry and Trade on February 22.

Great Potential for Green Energy

As the investor of the first green hydrogen project in Tra Vinh, Ms. Quyen highlighted that Vietnam’s 3,260 km coastline and abundant renewable energy sources—sun, wind, and seawater—are key components for sustainable green hydrogen production.

“This is a significant opportunity for Vietnam, with conditions not available in many countries globally. We have sunshine, wind, and seawater—endless resources that can create new fuel for humanity. However, turning this opportunity into reality requires strong government commitment and supportive policies for green hydrogen development,” said Ms. Quyen.

Discussing the $1.4 billion project in Tra Vinh, Ms. Quyen mentioned that before launching, the group spent two years researching green hydrogen and chose the globally prevalent alkaline electrolysis technology.

However, she pointed out significant challenges, including the need for comprehensive policy mechanisms, standards, investment in high-tech human resources, and technology. Additionally, green hydrogen production is costly, necessitating supportive policies to reduce costs and promote sustainable technology.

The CEO of The Green Solutions also mentioned the potential of green hydrogen production to sell carbon credits via green ammonia products, presenting a golden opportunity for Vietnam amid the growing carbon credit market. Thus, the Tra Vinh green hydrogen project has secured green financing from international financial institutions and banks.

Overcoming Challenges to Promote Green Hydrogen

“If Vietnam successfully builds and implements a green hydrogen industry based on its available opportunities and foundations, it could transition from an agricultural economy to a green industry, bypassing the heavy industry development phase,” said Ms. Quyen.

According to the plan, the project has commenced basic construction and received permits. Technical and specialized steps are being expedited to launch officially in Q3-2024, aiming to complete construction by 2026 and produce the first products by early 2027.

Minister of Industry and Trade Nguyen Hong Dien

Vietnam’s Hydrogen Energy Development Strategy, approved by the Prime Minister on February 7, 2024, opens new development avenues for the country’s energy sector towards a green, clean, and sustainable future.

The strategy aims to develop Vietnam’s hydrogen energy ecosystem based on renewable energy, encompassing production, storage, transportation, distribution, domestic use, and export with a modern, synchronized infrastructure, contributing to net-zero emissions by 2050.

The strategy outlines solutions like diversifying funding sources and investment forms, attracting private and international partners, enhancing investment in science and technology, human resources, and applying market tools to promote green growth, low-carbon economy, and circular economy.

Minister of Industry and Trade Nguyen Hong Dien stated that to effectively implement the strategy and develop projects, the ministry will quickly draft and submit specific plans to authorities to achieve the set goals and solutions, ensuring consistency and synchronization.

Simultaneously, the ministry will focus on revising, supplementing, and issuing new regulations and policies related to hydrogen energy, contributing to completing the policy and legal framework. This includes monitoring and expediting hydrogen energy projects, promptly addressing any challenges.

Source: Tuoi Tre Newspaper.

H2FLY highlights feasibility of hydrogen propulsion technology

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Hydrogen-electric powertrain developer H2FLY is focused on proving the feasibility of the promising clean technology, according to Professor Dr Josef Kallo, co-founder and CEO.

Earlier this month Californian eVTOL developer Joby conducted a first-of-its-kind hydrogen-electric demonstration, with its prototype air taxi demonstrator successfully making a 523 mile flight “with water as the only by-product”. It is believed to be the first forward flight of a hydrogen-powered VTOL aircraft.

Joby designed and built the demonstrator’s liquid hydrogen fuel tank (capable of storing up to 40kg of liquid fuel), which feeds hydrogen into a fuel cell system, designed and built by H2FLY.

Speaking to Aerospace Global News, H2FLY’s Dr Kallo said: “We are looking first of all to show the technology is feasible. It is possible from a functional perspective to have high continuous power installed in an aircraft and also have the fuel there for a couple of hours. This is a very good achievement to show that not only does technology have to be there, but we have to now step into the qualification part.”

He added: “We are part of the Joby universe, which makes me very proud. In the last couple of weeks we could show that it is also possible to fly with a liquid hydrogen propulsion system that was developed by Joby.”

The Stuttgart, Germany-based company achieved another record-breaking flight in September 2023 when it made the world’s first piloted flight of a liquid hydrogen-electric aircraft using its proprietary fuel cell technology.

H2FLY has secured funding from the German Federal Ministry for Digital and Transport (BMDV) as part of its regional commercial aircraft fuel cell development, aiming to develop and test a high-performance system with an output of 350kW. The funding marks the commencement of the BALIS 2.0 Project, launched at Stuttgart Airport.

H2FLY is the leader of the initiative, set to receive €9.3 million from the BMDV over the next two years, with funding also provided as part of the German Recovery and Resilience Plan (DARP) via the European Recovery and Resilience Facilities (ARF) in the NextGenerationEU programme.

Source: Aerospace Global News

Graphene: A New Hope for Semiconductors?

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In the evolution of electronic devices, silicon has always been dominant. However, with the continuous advancement of Moore’s Law, the physical limitations of silicon-based materials are becoming apparent. Today, we are on the brink of an industrial revolution, with various sectors exploring different materials, notably wide bandgap semiconductors like SiC and GaN. The latest buzz surrounds graphene.

Discovered in 2004 by two professors at the Chernogolovka Institute of Microelectronics at the University of Manchester, graphene has been hailed as a miracle material. Graphene, a two-dimensional material consisting of a single layer of carbon atoms, boasts three remarkable properties:

  1. It is extremely strong, being over 200 times stronger than steel.
  2. It has extremely high carrier mobility.
  3. It possesses very high thermal conductivity, allowing efficient heat dissipation and preventing electronic devices from overheating.

Graphene seems ideal for the electronics industry, but it lacks a bandgap, a crucial property for transistor switching. For the past 20 years, efforts have focused on “opening a gap” in graphene, the primary challenge for commercial applications.

Graphene was discovered in 2004 using Scotch tape on a piece of graphite

Recent research by Professor Walter de Heer’s group at the Georgia Institute of Technology and Professor Ma Lei at Tianjin University has successfully created a bandgap in graphene, unlocking new potential for its application in semiconductors. By imposing specific constraints during growth on SiC, they developed semiconducting epitaxial graphene (SEG) on single-crystal silicon carbide substrates with a bandgap of 0.6 eV and room-temperature mobility exceeding 5000 cm²V⁻¹s⁻¹, ten times that of silicon and twenty times that of other two-dimensional semiconductors. Graphene allows electrons to move through it much faster, akin to driving on a smooth highway versus a gravel road. This breakthrough opens new possibilities for graphene’s application in semiconductors.

Their research was published in the journal Nature on January 3 (Image source: Christopher McEnany/Georgia Institute of Technology)

How is a Bandgap Created in Graphene?

There are two main methods: the nanoribbon approach, where graphene is cut or shaped into ultra-fine nano strips, and the substrate interaction method, which uses the interaction between graphene and its growth substrate to create a bandgap. The former involves complex manufacturing processes and variability among samples, posing challenges for large-scale production. The latter involves selecting specific substrate materials and adjusting growth conditions to alter graphene’s electronic properties.

The method used by Professor Walter de Heer’s team involves the latter approach. They focus on developing a “buffer layer” of graphene on silicon carbide (SiC). As early as 2008, it was known that the buffer graphene layer formed on SiC could be semiconducting, but obtaining wafer-level samples was challenging. They achieved this by heating SiC semiconductor material, causing silicon atoms on the surface to sublime, leaving a carbon-rich layer that recrystallizes into multiple layers with a graphene structure. Some of these layers form covalent bonds with the SiC surface, exhibiting semiconducting properties. However, the disorder in the epitaxial graphene layer formed spontaneously on SiC results in extremely low mobility, only 1 cm²V⁻¹s⁻¹, compared to room-temperature mobilities up to 300 cm²V⁻¹s⁻¹ in other materials.

To address this, the researchers used a near-equilibrium annealing method. By sandwiching two SiC chips together with the silicon face of the upper chip facing the carbon face of the lower chip, they created a controlled environment. In high-purity argon at 1 bar pressure and around 1600°C, they grew atomically flat terraces uniformly covered by a buffer layer, resulting in a chemically, mechanically, and thermally stable SEG network aligned with the SiC substrate. This method allows SEG to be shaped using conventional semiconductor fabrication techniques and seamlessly connect with semimetallic epitaxial graphene, making it suitable for nanoelectronics.

Three stages of epitaxial graphene (SEG) production process

SEG Manufacturing Process:

  1. A graphite crucible filled with two 3.5 mm × 4.5 mm SiC chips is heated by eddy currents in a quartz tube.
  2. The chips are stacked, with the carbon face of the lower chip facing the silicon face of the upper chip. At high temperatures, a slight temperature difference causes material flow, forming large terraces on the seed chip and a uniform SEG film.
  3. The process involves three stages:
    • Heating the chips to 900°C in vacuum for about 25 minutes to clean the surfaces.
    • Raising the temperature to 1300°C in 1 bar argon for 25 minutes to form evenly spaced SiC bilayer steps.
    • Increasing the temperature to 1600°C in 1 bar argon, resulting in “step bunching” and “step flow,” forming large, atomically flat mesas where the SEG buffer layer grows.

Their research achieved significant progress, forming a graphene buffer layer on SiC with a bandgap of about 0.6 electron volts, roughly half that of silicon (1.1 eV) and close to germanium (0.65 eV), much narrower than SiC’s bandgap (3 eV). According to the Georgia Tech blog, it took them 10 years to perfect the material.

The discovery of epitaxial graphene not only expands graphene’s application range but could also trigger a paradigm shift in electronics. However, graphene will likely complement rather than replace silicon. This breakthrough in graphene buffer layers provides new momentum for “beyond silicon” technology, particularly in wide and ultra-wide bandgap semiconductors, such as power electronics for electric vehicles and spacecraft electronics. It also promotes in-depth research into integrating various functional devices like sensors and logic components on SiC, crucial for developing renewable energy and managing unstable inputs.

Spill Response Kits and What You Need to Know

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1. What is a Spill Response Kit?

A spill response kit is the most convenient and optimal solution for handling oil, chemical, and corrosive liquid spills on a medium to small scale. These kits include equipment, tools, and materials designed to control and clean up spilled liquids, allowing businesses or individuals to promptly manage oil or chemical spills in workshops, factories, gas stations, large transport vehicles, and other areas at risk of fuel, oil, chemical, and industrial liquid spills.

Spill response kits typically include components such as:

  • Safety equipment like boots, gloves, and safety goggles
  • Absorbent pads: Used to quickly and conveniently absorb liquids.
  • Absorbent pillows and booms: Used to contain the spill area, prevent contamination spread, and absorb large quantities of spilled liquids.
  • Specialized cleaning agents: To clean contaminated surfaces.
  • Brooms and containers: For collecting absorbed waste.
  • Instruction manual: Provides detailed guidelines on spill response procedures.

2. When to Use a Spill Response Kit?

Small to medium-scale spills or leaks of liquids such as oil and chemicals occur frequently at production facilities, workshops, factories, storage areas, and fuel businesses. Therefore, equipping a spill response kit is crucial to promptly prevent fire hazards, environmental pollution, and health risks. Spill response kits should be placed near high-risk areas to allow personnel to quickly access and deploy them in case of a spill.

3. How to Choose the Right Spill Response Kit?

Currently, there are three types of spill response kits:

  • Oil Spill Response Kits: Specifically designed for medium to small oil spills at gas stations, factories, industrial areas, etc.

 

  • Chemical Spill Response Kits: Optimal for handling high-concentration chemical spills and hazardous chemicals in laboratories, R&D areas, and industrial production zones.

  • Universal Spill Response Kits: Suitable for responding to oil or chemical spills, such as oil-based solutions, acids, bases, corrosives, chemicals, and unidentified liquid spills in medium to small-scale areas.

Depending on the specific business operations and chemical usage needs, organizations should choose the appropriate spill kit and the necessary materials within the kit to ensure the most effective spill response.

4. Spill Response Kit Usage Instructions

Here are the detailed steps for using a basic spill response kit:

  • Step 1: Use the safety equipment when responding to an oil or chemical spill.
  • Step 2: Stop the source of the oil or chemical spill. Use absorbent booms to contain the spread of oil and chemicals to neighboring areas.
  • Step 3: Place absorbent pads and pillows over the entire spill area to absorb and recover all liquid from the surface.
  • Step 4: Apply cleaning powder to the spill area to absorb any remaining liquid adhering to the surface. Then, use brooms or stiff brushes to scrub the surface thoroughly.
  • Step 5: After handling the spill, collect the used equipment and tools for reuse. Place the absorbed chemical products in hazardous waste storage, away from heat sources, water storage areas, and avoid disposing of them directly into the environment to prevent cross-contamination.

5. Where to Buy Spill Response Kits?

BIGNANOTECH specializes in manufacturing and distributing spill response and handling materials, industrial oil and chemical cleaning products such as absorbent pads, pillows, booms, oil and chemical absorbent fibers, oil absorbent powder, oil filter cloth, and spill response kits for oil, chemicals, or multipurpose use. We are ready to meet product needs to best suit customer requirements.

For more information on products and industrial cleaning solutions, please contact:
BIG NANO TECHNOLOGY
Hotline: (+84) 879 808 080 – (+84) 868 939 595
Email: sales@bignanotech.com

OIL SPILL RISKS IN INDUSTRIAL KITCHENS AND HOW TO HANDLE THEM

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In restaurants, industrial kitchens, and large-scale food processing areas, there are always significant risks of oil spills that compromise safety and hygiene. During operations, large quantities of spilled oil can be challenging to clean up, and improper handling of such oil can lead to serious consequences. Furthermore, if excess cooking oil is poured down the drain, it can solidify, cling to the pipes, and accumulate over time, forming blockages that disrupt public drainage systems. These can combine with other waste like paper scraps, hair, or cloth to form “fatbergs.” If not removed, these fatbergs can cause pollution, clog toilets, block drainage pipes, and lead to flooding on streets.

1. High-risk areas for oil spills in industrial kitchens and restaurants:

  • Cooking and frying area: This area has the highest risk of oil spills and splatters because oil is continuously used for cooking, especially frying.
  • Food preparation area: During food prep and ingredient processing, oil can spill onto the work surfaces.
  • Sink area: Washing dishes, bowls, and cooking utensils with oil will cause oil spills in this area.
  • Oil storage area: Oil containers can spill if not properly stored or if accidents occur during movement.
  • Walkways: Oil can spill onto the floor during the transportation of food and cooking utensils.

2. Measures to minimize oil spill risks:

To control oil spill risks in restaurant kitchens, communal kitchens, and industrial areas, consider the following methods:

  • Use anti-slip mats: Place anti-slip mats in areas prone to spills to ensure employee safety.
  • Regular equipment maintenance: Check and maintain cooking equipment regularly to prevent oil leaks.
  • Use safe oil containers: Use containers with tight-fitting lids to avoid oil spills.
  • Staff training: Train staff on safe oil handling and spill response procedures.

Always have prepared plans and tools for spill response. Large-scale industrial kitchens and restaurants should have pre-planned response measures for spills so staff can promptly address incidents and minimize impacts.

A product that can handle oil spills in restaurants, industrial kitchens, and communal kitchens is the industrial oil absorbent pad. BIGNANOTECH’s high-tech oil absorbent pad is an excellent alternative to conventional rags and towels due to its superior advantages:

  • Absorbs a variety of oils, including cooking oil, industrial oil, and waste oil.
  • Quick absorption speed.
  • Can absorb multiple times its weight without releasing the liquid after absorption.
  • Can be wrung out and reused.
  • Convenient and easy to use for cleaning kitchen surfaces, floors, walls, and oil-covered utensils.

For larger spills, BIGNANOTECH’s oil absorbent powder can be used to thoroughly clean oil stains on floor surfaces without needing secondary cleaning agents. The product is quick and convenient to use, can completely absorb spilled oil on the ground, and leaves the floor dry and clean.

For more information on methods and products for handling oil spills, please contact us:
BIG NANO TECHNOLOGY
Hotline: (+84) 879 808 080 – (+84) 868 939 595
Email: sales@bignanotech.com

N-Fiber Oil Absorbent Boom – Optimal Solution for Oil Spill Response

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The N-Fiber oil absorbent boom plays a crucial role in preventing and addressing oil spill incidents at sea. It not only helps protect the environment and marine ecosystems but also minimizes damage and facilitates the convenient handling of oil spills on the water surface. Here is detailed information about oil absorbent booms and their role in protecting the marine environment.

1. What is the N-Fiber oil absorbent boom?
The N-Fiber oil absorbent boom, also known as an oil containment boom, is a specialized floatation system designed to contain and control oil spills floating on the sea surface. They can isolate and absorb oil waste from incidents such as leaks from oil tankers, maritime accidents, or oil and gas production facilities. The oil absorbent boom is made from high-tech nano materials, which are water-resistant and can float on the sea, thereby preventing the spread of oil and minimizing damage to the marine environment.

2. The role of the N-Fiber oil absorbent boom in protecting the marine environment
Oil waste can harm marine animals and coastal aquaculture, as well as contaminate seawater and beaches. Using the N-Fiber oil absorbent boom is crucial in reducing the consequences of oil spills, speeding up incident response, and minimizing damage to the marine ecosystem.

3. How the N-Fiber oil absorbent boom works
In the event of an oil spill, the N-Fiber oil absorbent boom is deployed in the affected area. The booms are connected and float on the water’s surface, creating a barrier around the oil spill area to prevent the spread of oil to a larger area. The oil absorbent boom is designed with absorbent holes that both contain and absorb the oil from the spill area. Once the boom has absorbed the oil, the waste oil can be safely collected and processed.

4. Accessibility and deployment of the N-Fiber oil absorbent boom
The N-Fiber oil absorbent boom is very easy to use and can be quickly deployed when needed. This is especially important in cases where oil spills need to be addressed immediately to avoid significant environmental damage.

5. International cooperation and effective management
To effectively protect the marine environment, in addition to proactive awareness by businesses, there needs to be international cooperation and governmental management plans to respond to oil spill incidents. The oil absorbent boom is only part of the preventive measures and preparations to protect the marine environment and must be combined with other measures such as early warning systems and emergency response plans to manage risks effectively.

BIGNANOTECH is a company specializing in the production and supply of materials for responding to oil and chemical spill incidents. The products come in various models and sizes for customers to customize according to their needs, such as oil absorbent mats, oil absorbent booms, oil absorbent pillows, oil absorbent cotton, and oil absorbent powder.

For more information on products and industrial cleaning solutions, please contact:
BIG NANO TECHNOLOGY
Hotline: (+84) 879 808 080 – (+84) 868 939 595
Email: sales@bignanotech.com

S-CORIN Heat Reflective Anti-Heat Paint: The Optimal Solution for Fuel, Chemical, and Petroleum Storage Tanks

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What is S-CORIN?

S-CORIN is an advanced heat reflective anti-heat paint specifically designed to protect fuel, chemical, and petroleum storage tanks. With high-end heat reflective technology, S-CORIN significantly reduces the internal temperature of tanks compared to the external environment, ensuring the quality of the chemicals inside and increasing the durability of the tank surfaces.

Outstanding features of S-CORIN Paint

  • Superior heat reflective capability: S-CORIN can reflect up to 90% of UV rays from the sun, reducing the surface temperature of tanks by 10-20 degrees Celsius. This not only protects the tanks but also lowers the internal temperature, ensuring the safety of fuels and chemicals.
  • Corrosion and oxidation resistance: With a special coating, S-CORIN prevents corrosion and oxidation from the environment, especially under harsh weather conditions. This extends the lifespan of storage tanks, reducing maintenance and repair costs.
  • Heat resistance and explosion prevention: S-CORIN is designed to withstand high temperatures and prevent explosions, ensuring absolute safety for tanks storing fuels, chemicals, and petroleum.
  • Easy application: S-CORIN paint can be easily applied using conventional methods such as spraying, rolling, or brushing, saving time and labor costs.

Applications of S-CORIN Paint

  • Fuel storage tanks: S-CORIN protects fuel storage tanks from high temperature effects, preventing overheating and explosions.
  • Chemical storage tanks: With high corrosion resistance, S-CORIN is an ideal choice for chemical storage tanks, ensuring safety and long-term durability.
  • Petroleum storage tanks: S-CORIN helps reduce the surface temperature of petroleum storage tanks, preventing evaporation and explosions, protecting user safety and the environment.

Benefits of using S-CORIN Paint

  • Energy savings: Lowering the surface temperature of tanks reduces the need for cooling systems, saving energy and operational costs.
  • Environmental protection: By reducing fuel and chemical evaporation, S-CORIN helps protect the environment and reduce pollution risks.
  • Increased tank efficiency and lifespan: With anti-corrosion, heat-resistant, and heat-reflective features, S-CORIN extends the lifespan and enhances the efficiency of storage tanks.

S-CORIN heat reflective anti-heat paint is the optimal solution for fuel, chemical, and petroleum storage tanks. With superior heat reflection, corrosion resistance, heat resistance, and easy application, S-CORIN not only protects tanks but also brings economic and environmental benefits. Choose S-CORIN to ensure safety and efficiency for your tank systems.

For more information on products and industrial cleaning solutions, please contact:
BIG NANO TECHNOLOGY
Hotline: (+84) 879 808 080 – (+84) 868 939 595
Email: sales@bignanotech.com

How to Use N-FIBER Oil Filter Fabric

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With the increasing scale and frequency of industrial production activities today, the amount of waste oil released into the environment is substantial, severely affecting the quality of water and air. Therefore, the production of an effective solution to address this issue is highly anticipated. To meet these expectations, industrial oil filter fabric has been developed with the ability to thoroughly clean oil, even very thin oil films.

Description of N-FIBER oil filter fabric

The oil filter fabric is used to filter spilled oil and oil mixed in water at wastewater drains, solution conduits, and other points before being discharged into the environment. The product can completely separate various types of oil from oil-contaminated water, whether it’s surface oil or emulsified oil. This is an optimal environmental and infrastructure protection solution for businesses that often discharge oil-containing liquids.
The oil absorbent fabric is made from 100% polypropylene with Japanese Nano fiber spraying technology, optimizing its filtration capability. The product is non-corrosive, and the oil will not leak from the roll.

Usage instructions

Using industrial oil filter fabric is incredibly simple and convenient. Users just need to place the oil filter fabric of suitable size at the wastewater drain, filtration system, three-compartment tank, etc., and let the oil-contaminated water flow through the fabric to filter out the oil and grease.
Currently, industrial oil filter fabric is used as a replacement for chemical-based oil-contaminated water treatment systems, providing superior efficiency and high safety, and being human and environmentally friendly.

Technical specifications

  • Size: According to customer needs
  • Specific weight: 0.5kg/m²
  • Oil filtration and retention capacity: 20 times its own weight (depending on the type of oil)
  • Can withstand a flow rate of up to 250m³/hour

Applications of oil filter fabric

  • Rainwater filtration: Filter oil and oil-contaminated substances from ditches, conduits, ponds, wastewater pits, manholes, and water drains.
  • Supporting oil/water separators: Water from oil separators often still contains a thin oil film. Oil filter fabric is used to thoroughly filter this oil film in the final step before discharging the water into the environment.
  • Oil filtration/erosion prevention for canal and pond banks: Serves four simultaneous purposes: prevents oil films or oil in water from contaminating the soil banks; prevents oil-contaminated soil from leaching into the water; prevents erosion and landslides of canal/pond banks; absorbs and retains oil in the fabric fibers to allow natural degradation over time.
  • River/sea bank oil filtration: Used as a barrier to prevent oil spills in rivers/seas from reaching the shore, easy to handle even in rocky or uneven water bottoms.
  • Oil and grease-containing wastewater filtration: Particularly effective for filtering oil and grease in wastewater and oil collection pits without clogging the flow.
  • Oil spill response: Used as a filter for oil-contaminated water, replacing oil absorbent pads on the water surface. This product performed excellently during the oil spill response in the Gulf of Mexico in the USA. Used as a curtain barrier at ports to absorb floating oil films.
  • Oil collection: Oil absorbed into the fabric fibers can be easily separated using mechanical methods (wringing, pressing, centrifugation…) and can be reused multiple times until the fabric becomes frayed or punctured.

For more information on products and industrial cleaning solutions, please contact:
BIG NANO TECHNOLOGY
Hotline: (+84) 879 808 080 – (+84) 868 939 595
Email: sales@bignanotech.com

H-FIBER Chemical Absorbent Pads for High-Concentration Acid/Base

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Chemical absorbent pads are commonly used to absorb various acids, bases, corrosive substances, and high-concentration chemicals. These products can clean chemical-contaminated equipment, large spills, or continuous leaks of liquids to minimize damage when chemical spills occur.

H-FIBER chemical absorbent pads are manufactured using Japanese Nano technology, featuring superior absorption speed and excellent retention of absorbed liquids. The material is non-flammable and treated with anti-static properties as required for fire and explosion prevention, making it particularly safe to use.

PRODUCT FEATURES

  • Capable of absorbing various acids, bases, corrosives, chemicals, and unidentified liquids, even highly concentrated solutions such as 98% sulfuric acid and 30% sodium hydroxide.
  • H-FIBER chemical absorbent pads by BIGNANOTECH are produced using Japanese Nano technology, with a distinctive perforated design that allows the product to absorb much faster than similar products.
  • H-FIBER chemical absorbent pads do not degrade or cause dangerous reactions when exposed to corrosive substances. The product has a long lifespan and does not fray or tear even when saturated.

FUNCTIONS AND BENEFITS

  • Environmentally friendly
  • Ten times higher absorption capacity compared to other products
  • Non-toxic to the environment, humans, and animals
  • Cost-effective, economical, easy to use

PRACTICAL APPLICATIONS

  • An ideal and safer replacement for regular cleaning cloths when handling hazardous chemicals.
  • Used to clean and wipe areas where chemical spills and hazardous solutions have occurred on floors or the ground; used to wipe chemical-contaminated machinery parts and tools during transportation or use.
  • Suitable for placing under machinery and cleaning equipment in factories and workshops.
  • Frequently used in laboratories, chemical storage areas, around battery packs and dipping tanks, processing plants, boiler rooms, R&D rooms, chemical storage warehouses, industrial zones, and industries involving chemicals and hazardous chemical leak risks.

USAGE INSTRUCTIONS

  1. Wear protective gloves (or protective clothing) to avoid direct contact with harmful chemicals.
  2. Gently place the chemical absorbent pad on the surface of the spill or chemical stain to maximize contact area.
  3. Wait 3-5 minutes for the pad to gradually absorb the chemical, then turn the pad over and wait for the same duration. The pad will darken as it absorbs the solution. When the pad is fully saturated (entirely darkened), it is considered saturated.
  4. Squeeze and collect the absorbed chemicals into a container for reuse (if needed). The pad can be reused immediately after wringing out the chemicals to absorb spills in other areas.

  5. After handling the spill, quickly place the saturated absorbent pad in a designated hazardous waste bin or storage area, away from heat/fire sources, water tanks, and do not dispose of it directly into the environment.

    Note: Store the product in a dry place, avoiding damp conditions.

Check out other chemical absorbent products HERE: CHEMICAL ABSORBENT PRODUCTS

For more information on products and industrial cleaning solutions, please contact:
BIG NANO TECHNOLOGY
Hotline: (+84) 879 808 080 – (+84) 868 939 595
Email: sales@bignanotech.com

Smart Shirt Using Carbon Nano Fiber to Measure Heart Rate

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No need to wear uncomfortable smartwatches or chest straps to monitor your heart rate if your comfortable shirt can do the job better. This is the idea driving the “smart clothing” developed by a lab at Rice University.

The Brown School of Engineering lab, led by molecular and chemical engineer Matteo Pasquali, reports in the American Chemical Society’s journal Nano Letters that they have sewn carbon nanotube fibers into sportswear to monitor heart rate and continuously record the wearer’s electrocardiogram (ECG).

According to the research team, these fibers conduct electricity like metal wires but are washable, comfortable, and less likely to break when the body moves. Overall, the enhanced shirt can collect data better than standard chest strap monitors that take direct measurements during trials. When combined with commercial medical electrode monitors, the carbon nanotube shirt provides better ECG results.

Lauren Taylor, the study’s lead author, said, “The shirt needs to be snug against the chest. In future research, we will focus on using denser arrays of carbon nanotube fibers to increase the surface area in contact with the skin.” The researchers noted that the nanotube fibers are soft and flexible, and clothing incorporating them can be machine washed. The fibers can be machine-sewn into fabric like standard thread.

The zigzag stitching pattern allows the fabric to stretch without breaking the fibers. Taylor noted that the fibers not only provide stable electrical contact with the wearer’s skin but also serve as electrodes to connect electronic devices such as Bluetooth transmitters that relay data to smartphones or connect to Holter monitors that can be stored in the user’s pocket.

Pasquali’s lab introduced carbon nanotube fibers in 2013. Since then, these fibers, each containing tens of billions of nanotubes, have been studied for use as bridges to repair damaged hearts, electrical interfaces with the brain, use in cochlear implants, flexible antennas, and applications in automotive and aerospace industries.

Their development is also part of the Carbon Hub based at Rice—a multidisciplinary research initiative led by Rice and launched in 2019. The original nanotube fibers, about 22 microns wide, were too thin for a sewing machine to handle. Taylor said a rope maker created a thread that could be sewn, essentially three bundles of seven fibers each, braided into a size comparable to standard thread.

Taylor explained, “We worked with someone who sells small machines designed to make ropes for model ships. He built us a mid-scale device that works similarly.” The zigzag pattern can be adjusted to account for the stretch of the shirt or other fabrics. Taylor said the team is working with Dr. Mehdi Razavi and his colleagues at the Texas Heart Institute to find ways to maximize skin contact.

The research team notes that fibers woven into fabric can also be used to embed antennas or LEDs. Minor modifications to the fiber’s shape and related electronics could eventually allow clothing to monitor several vital signs—exertion levels or breathing rates.

Taylor noted that other potential applications might include human-machine interfaces for cars or soft robots, or as antennas, health monitors, and ballistic protection in the military. Taylor commented, “We demonstrated with a collaborator a few years ago that carbon nanotube fibers dissipate energy on a per-weight basis better than Kevlar.”

Pasquali commented, “We have found that after two decades of development in labs worldwide, this material performs well in many applications. Due to the combination of conductivity, good skin contact, biocompatibility, and softness, carbon nanotube fibers are a natural component for wearable devices.”

Pasquali believes that while the wearable device market is relatively small, it could pave the way for a new generation of sustainable materials created from hydrocarbons through direct splitting—a process that also produces clean hydrogen. Developing such materials is a core focus of the Carbon Hub. Pasquali concluded, “We are in a situation similar to solar cells a few decades ago. We need application leaders who can create the momentum to scale up production and increase efficiency.”