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:
- A 'world first' project to heat homes using renewable hydrogen gets the green lighton December 1, 2020 at 1:47 pm
A project in Scotland will focus on using hydrogen to provide heat to roughly 300 homes. The demonstration will harness "green hydrogen", a term which refers to hydrogen produced using renewable ...
- PowerTap Improves Hydrogen Dispensing Technologyon December 1, 2020 at 11:26 am
Clean Power Capital Corp. says PowerTap Hydrogen Fueling Corp., the company’s previously announced investment, is in the process of completing the 3rd ...
- My Take: Hydrogen fuel a way to battle climate changeon December 1, 2020 at 11:14 am
The Climate Change Crisis must not be forgotten while we concentrate on ridding ourselves and the planet of the deadly COVID-19 virus. Draconian measures ...
- EGEB: World’s first hydrogen fuel cell train is approved in Austriaon December 1, 2020 at 9:05 am
Alstom's Coradia iLint has completed test operation in Austria and is ready for production; it's #GivingTuesday — here are three eco-friendly ideas.
- Hydrogen-powered heavy duty vehicles could contribute significantly to achieving climate goalson December 1, 2020 at 8:21 am
A partial transition of German road transport to hydrogen energy is among the possibilities being discussed to help meet national climate targets. Researcher from the IASS have examined the ...
Go deeper with Google Headlines on:
Go deeper with Bing News on:
Hydrogen production from biomass
- Syngas Chemicals Market Research Report by Form, by Application – Global Forecast to 2025 – Cumulative Impact of COVID-19on November 30, 2020 at 5:19 pm
The report scope includes detailed competitive outlook covering market shares and profiles key participants in the ...
- E-Fuels can replace fossil fuels 30 Novemberon November 30, 2020 at 4:57 am
The aircraft, ships, and lorries of the future must be powered by e-fuels—fuels produced partly from captured CO2—and partly from hydrogen produced ...
- Hydrogen Generation Market Insights, Size, Future Growth, Demand, Share, Competitive Analysis by Top Players and Forecasts to 2026on November 26, 2020 at 9:18 pm
Selbyville, Delaware, The demand for Global Hydrogen Generation market is anticipated to be high for the next six years. By considering this demand we provide latest Global Hydrogen Generation Market ...
- DOE’s Hydrogen Program Plan addresses biobased hydrogen sourceson November 16, 2020 at 3:59 pm
The U.S. Department of Energy on Nov. 12 released its Hydrogen Program Plan to provide a strategic framework for the agency’s hydrogen research, development and demonstration (RD&D) activities. The ...
- IIT-G develops method to transform industrial wastes into chemicalson November 16, 2020 at 7:33 am
The Indian Institute of Technology Guwahati (IIT-G) on Monday said its researchers have formulated efficient 'pincer' catalytic systems that transform industrial/biomass wastes into valuable chemicals ...