Biohydrogen production from waste.  How is it done?

Biohydrogen – a potential alternative fuel source – continues to gain great importance. One of the possibilities for its production is the use of sewage sludge resulting from the treatment of food waste. Scientists from the Silesian University of Technology improved this method and supported it with nanotechnology.

Biohydrogen (Biohydrogen) is hydrogen gas that is produced biologically, often using microorganisms. He is It is considered a form of renewable energyBecause its production is related to biological processes, which usually include fermentation of organic compounds. The most common methods are: dark fermentation (anaerobic microbial decomposition of organic compounds by bacteria, the byproduct is hydrogen) and photosynthesis processes (self-producing microorganisms such as green algae and cyanobacteria can produce hydrogen in the process of splitting molecular water into oxygen and hydrogen in photosynthesis ).

Key potential applications of biohydrogen include: energy production, Transfer And Industrial processes. “Hydrogen is a clean and efficient fuel – it can be burned or used in fuel cells to generate electricity or as fuel for vehicles. The byproduct of hydrogen combustion is water vapor, making it a clean source of energy“- he said in an interview with Science in Poland Dr Mohamed Saad HellalRepresent Department of Environmental Biotechnology, College of Environmental and Energy Engineering Silesian University of Technology and National Research Center in Egypt. He added that biohydrogen is also a valuable industrial raw material, used in processes such as ammonia production and petroleum refining. “In addition, biohydrogen production from renewable resources can help reduce greenhouse gas emissions compared to traditional fossil fuel-based hydrogen production methods.” – pointed out.

One of the new ways to produce biohydrogen is Use of industrial sludgeGenerated in wastewater treatment processes in the food industry. “This sludge, which is often treated as waste, is a rich source of organic matter, making it attractive for reuse. We used sewage sludge resulting from chemical treatment of industrial wastewater from a food additive production plant“- said Muhammad Saad Hilal.

to Increased efficiency of biohydrogen production Using this method, scientists from the Silesian University of Technology added a catalyst to the biological process Nanostructure. “We used conductive metal nanoparticles containing silver and copper. This is the first time it has been used in this type of operation“- Muhammad Saad Hilal confirmed.

The addition of nanoparticles caused a change in the community of biohydrogen-producing microorganisms and, at appropriate concentrations, in its production rate. “The nanoparticle bioreactors were dominated by bacteria from the genera Proteinophyllum and Azovibrio. Both bacteria had already been identified as biohydrogen producers, but in these studies they began to dominate the bioreactor only when their “preferred” substrates emerged—the materials from which they most effectively produce biohydrogen. For both types of bacteria it is propionate, and for the first microorganism it is also acetate. These “delicacies” are the product of other biochemical transformations carried out by other members of this bacterial team. Also, those microorganisms that did not dominate society, but thanks to their work, materials were created that support the work of the effective producers of this gas“- she explained Ph.D. Alexandra Zimbinska-Buczynska,Prof. PŚ, also with Department of Environmental Biotechnology, College of Environmental and Energy Engineering Silesian University of Technology.

In the opinion of Muhammad Saad Hilal. Implementing this technology in existing food processing plants and wastewater treatment plants could bring economic and environmental benefits. “Although the research was conducted at a basic research level, our solution has great potential for broader application, especially in the context of global efforts for sustainable development and carbon footprint reduction. The ability to convert waste into a valuable energy source can reduce reliance on traditional energy sources and help reduce greenhouse gas emissions“- concluded Muhammad Saad Hilal.

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Source: Bab

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