Using Contaminated Plants Involved in Phytoremediation for Anaerobic Digestion

文献类型： 外文期刊

第一作者： Cao, Zewei

作者： Cao, Zewei;Wang, Shengxiao;Shen, Zhenguo;Chen, Yahua;wang, Ting;Chang, Zhizhou;Shen, Zhenguo;Chen, Yahua;Shen, Zhenguo;Chen, Yahua

作者机构：

关键词： anaerobic digestion;phytoremediation;heavy metal;contamination;methane

期刊名称：INTERNATIONAL JOURNAL OF PHYTOREMEDIATION （ 影响因子：3.212； 五年影响因子：3.275 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： This study investigated the anaerobic digestion capability of five plants and the effects of copper (Cu) and S,S'-ethylenediaminedisuccinic acid (EDDS, a chelator widely used in chelant-assisted phytoremediation) on biogas production to determine a feasible disposal method for plants used in remediation. The results showed that in addition to Phytolacca americana L., plants such as Zea mays L., Brassica napus L., Elsholtzia splendens Nakai ex F. Maekawa, and Oenothera biennis L. performed well in biogas production. Among these, O. biennis required the shortest period to finish anaerobic digestion. Compared to normal plants with low Cu content, the plants used in remediation with increased Cu levels (100 mg kg(-1)) not only promoted anaerobic digestion and required a shorter anaerobic digestion time, but also increased the methane content in biogas. When the Cu content in plants increased to 500, 1000, and 5000 mg kg(-1), the cumulative biogas production decreased by 12.3%, 14.6%, and 41.2%, respectively. Studies also found that EDDS conspicuously restrained biogas production from anaerobic digestion. The results suggest that anaerobic digestion has great potential for the disposal of contaminated plants and may provide a solution for the resource utilization of plants used in remediation.

分类号： Q94

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