Unlocking the potential differences and effects of the anode and cathode regions on N 2 O emissions during electric field-assisted aerobic composting.

Autor: Shangguan H; Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China; University of Chinese Academy of Sciences, Beijing 100049, China., Shen C; Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China; Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Ding K; Ag Research, Ruakura Research Centre, Hamilton, New Zealand., Peng X; School of Environmental and Chemical Engineering, Shenyang University of Technology, Shenyang 110870, China., Mi H; Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Zhang S; Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Tang J; Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China. Electronic address: tangjiah@fafu.edu.cn., Fu T; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. Electronic address: taofuky@163.com., Lin H; Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2024 Nov 26; Vol. 418, pp. 131875. Date of Electronic Publication: 2024 Nov 26.
DOI: 10.1016/j.biortech.2024.131875
Abstrakt: Electric field-assisted aerobic composting (EAC) is a novel strategy for effectively mitigating nitrous oxide (N 2 O) emissions, but its deeper effects require further exploration. In this study, the differences in N 2 O emissions between the anode regions (AR) and cathode regions (CR) during EAC were evaluated. The cumulative N 2 O emission from the compost in CR was 32.77% lower than in AR. Compared to AR, the physicochemical properties of CR contribute to the reduction of N 2 O emission. PLS-PM analysis suggested that differences in N 2 O emission are primarily regulated by N-cycling related functional genes and N-containing substances, with different regulatory effects. In AR, functional genes and N-containing substances are significantly positively correlated with N 2 O emissions, whereas in CR, they are significantly negatively correlated. This study highlights the differences and effects of electrode regions in EAC on N 2 O emissions, offering new perspectives for future optimization.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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