Hydrogen peroxide plus ascorbic acid enhanced organic matter deconstructions and composting performances via changing microbial communities. (1st October 2021)

• Record Type: Journal Article
• Authors: Niu, Qiuqi; Yan, Hailong; Meng, Qingran; Wang, Susu; Li, Gen; Zhu, Qiuhui; Li, Xintian; Li, Qunliang
• Is Part Of: Journal of environmental management. Volume 295(2021)
• Publication Date: 2021-10-01
• Subjects: Composting -- Hydrogen peroxide -- Ascorbic acid -- Lignocellulose degradation -- Humification degree -- Bacterial community succession; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2021.113126
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: This work aims to investigate the influence of hydrogen peroxide (H2 O2 ) and ascorbic acid (ASCA) on the physicochemical characteristics, organic matter (OM) deconstructions, humification degree and succession of bacterial communities for co-composting of bagasse pith and dairy manure. The results indicated that H2 O2 and ASCA accelerated the degradation of lignocellulose, improved the transformation of dissolved organic matter (DOM), and enhanced the content of humic substance (HS) and the degree of its aromatization. The bacterial communities were significantly changed in the presence of additives, in which the relative abundances of Firmicutes and Actinobacteria significantly increased. Redundancy analysis (RDA) indicated that the degradation of OM and lignocellulose more influenced the bacterial community compositions. Conclusively, adding H2 O2 and ASCA accelerated lignocellulose degradation efficiency, and improved the composting process, which provided an optimized method to dispose of lignocellulose wastes and livestock manure. Graphical abstract: Image 1 Highlights: H2 O2 and ASCA were added in compost based on enhancing LPMOs and peroxidases activities. Assess the deconstructions of organic matter during composting. Compare the succession of bacterial community in different treatments. An optimized method was proposed for humification and aromatization in composting.