Organic matter, a critical factor to immobilize phosphorus, copper, and zinc during composting under various initial C/N ratios
文献类型： 外文期刊
作者： Wang, Lixia 1 ; Li, Yingxin 1 ; Prasher, Shiv O. 3 ; Yan, Baixing 1 ; Ou, Yang 1 ; Cui, Hu 1 ; Cui, Yanru 4 ;
作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Jilin, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100109, Peoples R China
3.McGill Univ, Bioresource Engn Dept, Macdonald Campus, Ste Anne De Bellevue, PQ H9X 3V9, Canada
4.Jilin Acad Agr Sci, Inst Rural Energy & Ecol, Changchun 130033, Jilin, Peoples R China
关键词： Initial C/N; Fractions redistribution; Organic matter; Redundancy analysis
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
ISSN： 0960-8524
年卷期： 2019 年 289 卷
页码：
收录情况： SCI
摘要： The status of heavy metals and the P fractions in compost affects their environmental risk. The present study investigated the effects of different initial carbon to nitrogen (C/N) ratios (15, 22, 27) on redistribution of Cu, Zn, and P fractions during composting. The results showed that the composting process transformed Cu, Zn and P from mobile fractions to more stable fractions. Compost with an initial C/N of 22 showed the most effective immobilization of Cu, Zn and P because of yielding greatest degree of polymerization. Multivariate statistical analysis identified organic matter as the most critical factor for explaining the redistribution of Cu, Zn, and P fractions in composting. However, the degree of organic matter degradation (organic matter content and Humic acid/Fulvic acid) better explained the change of bioavailability factor for Cu and the mobility of P during composting. This research provided guidance for providing technology to reduce environmental risk in compost.
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