BACKGROUND Solar energy is the ultimate energy source on the Earth. The conversion of solar energy into fuels and energy sources can be an ideal solution to address energy problems. The recent discovery of proteorhodopsin in uncultured marine γ-proteobacteria has made it possible to construct recombinant Escherichia coli with the function of light-driven proton pumps. Protons that translocate a...

One of the research directions renewable energy sources is production biohydrogen from dark fermentation organic matter. During this process, since hydrogen produced along with a complex mixture other gases and vapors, gas requires further purification. relatively easy solution to problem might be utilization separation membrane modules given their low consumption, simple operation ease upscali...

Digested sludge (DS) is a waste product of anaerobic digestion that produced during the biodegradation excess sludge. It cannot be used as substrate for further biogas production owing to its recalcitrant nature. In present study, we heat treatment technique convert DABYS microflora (DABYS = digested sludge-assimilating and biogas-yielding soil microflora), which degraded DS methane gas, could ...

Abstract The high demand for hydrogen has led to the development of various production methods. This study examines use synthetic and natural catalysts in generation biohydrogen. A bibliographic analysis was conducted using VOSviewer ScientoPy tools. research focuses on synthesis, purification, separation, storage, based findings. Hydrogen biohydrogen can be produced through processes such as r...