Study of the morphological changes of copper and zinc during pig manure composting with addition of biochar and a microbial agent

文献类型： 外文期刊

第一作者： Li Ran

作者： Li Ran;Meng Haibo;Zhao, Lixin;Zhou Haibin;Shen Yujun;Zhan Xi;Ding Jingtao;Cheng Hongsheng;Wang Jian;Li Ran;Meng Haibo;Zhou Haibin;Shen Yujun;Zhan Xi;Ding Jingtao;Cheng Hongsheng;Wang Jian;Zhao, Lixin

作者机构：

关键词： Heavy metals; Composting; Bioavailability; Immobilization ability

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 291 卷

页码：

收录情况： SCI

摘要： Intensive and unregulated use of feed additives in China has led to high levels of heavy metals such as copper and zinc in fertilizers, considerable quantities of which find their way into the environment. Studies have shown that composting could significantly decrease the bioavailability of heavy metals. This study was to investigate the effects of addition of biochar and a microbial agent on the morphological changes in copper and zinc during composting. Results show that treatment T8 successfully immobilized 70.36% of copper as a result of biochar addition. Treatment T3 successfully immobilized 40.76% of zinc; transformation of zinc to a higher stable state was found to be closely related to the formation of fulvic and humic acids. Results of fluorescence spectrum analysis also corroborate that the conversion of copper and zinc to forms with higher stability was associated with the formation of fulvic and humic acid-like substances.

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