Additives improved saprotrophic fungi for formation of humic acids in chicken manure and corn stover mix composting. (February 2022)

• Record Type: Journal Article
• Authors: Zhang, Wenming; Yu, Chenxu; Wang, Xujie; Yin, Siqian; Chang, Xinyi
• Is Part Of: Bioresource technology. Volume 346(2022)
• Publication Date: 2022-02
• Subjects: Humic acids -- Additives -- Biochar -- Palygorskite -- Fungi; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.126626
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Biochar and palygorskite promoted HS polymerization degree and HA formation. Lignocellulose-degradation funfi could decompose FA and HM and formation HA. Biochar significantly promoted saprotrophic fungi and decreased pathogenic fungi. Additives could promote the formation of HA and improve compost quality. Abstract: The objective of this study was to analyze the effects of additives (biochar (BC) and palygorskite (PG)) on predominant fungi succession throughout composting of corn stover/chicken manure mix to influence humic substances formation (HS). Results indicated that BC and PG promoted the polymerization of HS and formation of more humic acids (HA), and BC performed better than PG, 10% additive was better than 5%. ITS rRNA gene sequencing showed that predominant fungi succession was significantly affected by BC and PG in composting, correlation between HS formation and predominant fungi indicated that BC and PG boosted lignocellulose-degrading fungi which could break down fulvic acids (FA) and HM to form more HA. Fungi function analysis showed that 10% BC significantly increased saprotrophic fungi, and decreased pathogenic fungi. Therefore, addition of 10% BC was conductive to promote the formation of HA and improve compost quality.