ACS ES&T Engineering, Год журнала: 2024, Номер 4(10), С. 2506 - 2519

Опубликована: Авг. 13, 2024

Enhancing the anaerobic digestion (AD) of organic wastes has been a widely discussed topic. This study aims to enhance AD performance by combining microaeration with conductive or nonconductive carriers, using food waste as substrate. The use carriers alone enhanced methane production, and further improved performance. carrier showed significant enhancement microaeration, achieving daily yield 478 ± 11.3 mL CH4/g VS, which was 1.1 1.3 times higher than that control digester, respectively. Furthermore, explored various aspects, including oxidative stress, antioxidant capacity, microbial community structure during digestion. results demonstrated hydrolytic-acidification efficiency promoted direct interspecies electron transfer among syntrophic microorganisms. Methanogenic archaea aggregated on surface formed consortia facultative anaerobes, thereby mitigating stress effects cells enhancing total production. Moreover, metabolomics analysis ATP transport across bacterial membrane, accelerated nutrient conversion, caused changes in metabolites intermediates related glycerophospholipids, amino acids, signal transduction pathways.

Язык: Английский