Schematic diagram of byproduct production and hydrogen evolution through lignin decomposition
A novel technology has been developed for hydrogen production from the process, which involves electron that is produced during the decomposition of biomass such as waste wood. The result produced after biomass decomposition is a high value-added compound, and it is a two-stone technology that improves the efficiency of hydrogen production.
A research team, led by Professor Jungki Ryu in the School of Energy and Chemical Engineering at UNIST has presented a new biofuel system that uses lignin found in biomass for the production of hydrogen. The system decomposes lignin with a molybdenum (Mo) catalyst to produce high value-added compounds, and the electrons extracted in the process effectively produce hydrogen.
An eco-friendly way of producing hydrogen is the electrolysis of water. The voltage is applied to the water to produce hydrogen and oxygen at the same time. However, in the currently reported technology, the oxygen generation reaction (OER) is slow and complicated, and hydrogen production efficiency is low. This is because hydrogen gas is produced by hydrogen ions as electrons, because these electrons come from the oxygen evolution reaction.
Through the study, Professor Ryu and his research team have developed a new biofuel system that uses lignin as an electron donor in a way to reduce the overall inefficiency of the oxygen evolution reaction (OER). This is the principle of using molybdenum-based inexpensive metal catalysts (PMA) to break down lignin at low temperatures, and extract the electrons produced in the process to produce hydrogen. The new device has been designed to move electrons from lignin, along the wire to the electrode where the hydrogen evolution reaction (HER) occurs.
“With this new system, we can produce hydrogen with less energy (overvoltage) than conventional water electrolysis, as there is no need for oxygen reactions, requiring high energy and precious metal catalysts,” says Hyeonmyeong Oh (Combined M.S/Ph.D. of Energy and Chemical Engineering, UNIST), the first author of the study. “Conventional methods require more than 1.5 volts, but the new system was capable of producing hydrogen at a much lower potential (0.95 volts).”
In addition, vanillin or carbon monoxide (CO), which are produced via lignin breakdown is very useful substance for various industrial processes. “Lignin, the second most naturally abundant biomass, is difficult to decompose. However, using molybdenum-based catalysts (PMA) it was easily degraded at low temperatures,” says Research Assistant Professor Yuri Choi, the co-author of the study.
“The new biofuel system is a technology that produces hydrogen and valuable chemicals using cheap catalysts and low voltages instead of expensive catalysts such as platinum (Pt),” says Professor Ryu. “Our work is also significant, as it presents a new way to replace oxygen-producing reactions in the electrolysis of water.”
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
- Toyota & Hino Team Up to Develop Hydrogen Fuel Cell Truckson October 7, 2020 at 2:58 am
Toyota's (TM) partnership with Hino is a game changer for both companies, as it in sync with their goal of developing durable and zero-emission vehicles equipped with cutting-edge technology.
- Hyundai bets big on hydrogen truckson October 7, 2020 at 2:40 am
Hyundai Motor Company delivered its first XCIENT fuel cell heavy-duty trucks on Tuesday to customers in Europe, and announced aggressive plans to bring hydrogen-powered trucks to the U.S. and China, ...
- Hydrogen Double-Decker Buses Arrive in Europe’s Top Oil Cityon October 6, 2020 at 10:35 pm
The world’s first double-decker hydrogen buses will arrive in Aberdeen, Scotland, on Wednesday, a city best known as a base for some of the world’s top oil companies.
- Canadian oil and gas province Alberta aims to export hydrogenon October 6, 2020 at 1:58 pm
The Canadian province of Alberta will look to use its plentiful natural gas reserves to become an exporter of hydrogen, a clean-burning fuel, by 2040, Premier Jason Kenney said on Tuesday. WINNIPEG, ...
- Hydrogen-powered trains get the green light as Siemens Energy and Mobility sign joint agreementon October 6, 2020 at 10:09 am
The newly-listed Siemens Energy has signed a memorandum of understanding with Siemens Mobility to "jointly develop and offer hydrogen systems for trains." Announced on Monday, the ...
Go deeper with Google Headlines on:
Go deeper with Bing News on:
Hydrogen production from biomass
- Alberta hoping to tap into promising future of hydrogen energyon October 6, 2020 at 5:07 pm
Hydrogen can be extracted from water, fossil fuels and biomass, or a combination of the two. According to the International Energy Agency, natural gas constitutes 75 per cent of 70 million tonnes ...
- 'The biggest prize going': Inside the plans to decarbonise Britain's biggest industrial clusteron October 6, 2020 at 5:07 pm
The Humber Estuary is the most carbon-intensive stretch of the UK, home to 55,000 jobs and a huge slice of British economic value, but it is also one of the most climate vulnerable regions in the coun ...
- Renewable Hydrogen: Biomass for Sustainable Hydrogen Transportation Fuelon October 6, 2020 at 1:12 pm
In the November issue, we discussed biomass-derived hydrogen as a third- or even fourth-generation biofuel requiring a major change in automobile technology and fuel infrastructure. Federal policy and ...
- Spain Sets a $10.5 Billion Goal for Green Hydrogenon October 5, 2020 at 9:13 am
Sign up to receive the Green Daily daily newsletter and follow us @climate. Spain is stepping up its efforts to enter the race to build a hydrogen industry, putting it on par with France and Germany ...
- What Does “Green” Hydrogen Mean, And What Can We Use It For?on October 5, 2020 at 7:11 am
The oil industry is deliberately trying to sow confusion over hydrogen. From now on, when we hear about hydrogen, let's clarify what we're talking about, what we mean, how is it obtained, and what ...