This study investigates the enhancement of hydrogen production through anaerobic bioreactor fermentation of agricultural waste straw using graphene oxide-coated nanoscale zero-valent iron(nZVI/GO).The study reveals the regulatory patterns of nZVI/GO-mediated biohydrogen production in relation to the microbial growth and metabolic environment of the system.The results demonstrate that nZVI/GO effectively stabilizes the pH of the system,reduces the oxidation-reduction potential(ORP),and improves the growth and metabolic environment of the anaerobic fermentation microbial community.Additionally,the addition of nZVI/GO promotes the formation of a more stable hydrolytic fermentation microbial community and a hydrogen-producing fermentation microbiota,leading to enhanced degradation of corn straw and improved hydrogen production efficiency.This research offers valuable application parameters and scientific evidence supporting the environmentally friendly treatment and resource utilization of agricultural waste.
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