Опубликована: Янв. 1, 2024

Lignin is the main natural refractory organic compound in landfills and primary factor impeding stability of landfills. This study investigated effects mechanism associated with lignin degradation agent (LD) enhancement decomposition semi-aerobic The results demonstrated that after LD inoculation, laccase, manganese peroxidase, peroxidase activities related to increased by 44.95%, 89.47%, 97.07% during middle landfill stage, respectively. At end experiment, contents (hemicellulose content + cellulose content)/lignin ratio had decreased 20.76% 9.84%, respectively, whereas humic acid/fulvic acid 197.25% treatment. Chaetomium Microscaceae inoculant successfully colonized became dominant microorganisms. Simultaneously, inoculation stimulated enrichment indigenous lignin-degrading microorganisms (Cellvibrionaceae Chrysosporium) exogenous-indigenous microorganism interactions synergistically enhanced carbohydrate amino metabolism. microbial network analysis, Mantel test, structural equation model showed reorganized optimized community structure, synergistic among microorganisms, effectively promoted secretion alleviated barrier preventing biodegradation lignocellulose. Bioaugmenting an accelerates lignocellulose solid waste, shortens stabilization time, reduces their environmental impacts.

Язык: Английский