Biochar-based solid acid accelerated carbon conversion by increasing the abundance of thermophilic bacteria in the cow manure composting process. (15th April 2022)

• Record Type: Journal Article
• Authors: Zhu, Pengfei; Li, Jixuan; Wen, Xiaoli; Huang, Yite; Yang, Hongxiang; Wang, Susu; Meng, Qingran; Niu, Qiuqi; Leong, Siewyoong; Li, Qunliang
• Is Part Of: Journal of environmental management. Volume 308(2022)
• Publication Date: 2022-04-15
• Subjects: Biochar -- Lignocellulose destruction -- Formation of humus -- Alpha diversity -- Bacterial community succession; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2022.114682
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: This study investigated the effects of biochar-based solid acids (SAs) on carbon conversion, alpha diversity and bacterial community succession during cow manure composting with the goal of providing a new strategy for rapid carbon conversion during composting. The addition of SA prolonged the thermophilic phase and accelerated the degradation of lignocellulose; in particular, the degradation time of cellulose was shortened by 50% and the humus content was increased by 22.56% compared with the control group (CK). In addition, high-throughput sequencing results showed that SA improved the alpha diversity and the relative abundance of thermophilic bacteria, mainly Actinobacteria, increased by 12.955% compared with CK. A redundancy analysis (RDA) showed that Actinobacteria was positively correlated with the transformation of carbon. Graphical abstract: Image 1 Highlights: Biochar sulfonation increased specific surface area and porosity. SA accelerated carbon conversion in composting process. SA increased the relative abundance of thermophilic bacteria. A strategy for rapid carbon conversion during composting was proposed.