Nano-cerium oxide functionalized biochar for phosphate retention: preparation, optimization and rice paddy application

文献类型： 外文期刊

第一作者： Feng, Yanfang

作者： Feng, Yanfang;Lu, Haiying;Xue, Lihong;Yang, Linzhang;Feng, Yanfang;Lu, Haiying;Liu, Yang;Yang, Linzhang;Liu, Yang;Dionysiou, Dionysios D.;Feng, Yanfang;Xing, Baoshan

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关键词： Functionalized biochar;Phosphate retention;Nano-cerium oxide;Response Surface Model;Rice paddy

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

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收录情况： SCI

摘要： In this study, nano-cerium oxide functionalized maize straw biochar (Ce-MSB) was prepared and utilized to remove P from agricultural wastewater. Response Surface Model was applied to optimize the operating conditions. Moreover, Ce-MSB was applied to actual rice paddy column for the first time. Response Surface Model (RSM) showed higher materials ratio had positive effect on PO43- adsorption capacity, while higher pyrolysis temperature had negative effect. The maximum adsorption capacity of Ce-MSB for PO was 78 mg g(-1), implying that Ce-MSB was an effective functionalized adsorbent for P removal. Paddy soil column experiment showed that application of Ce-MSB decreased total phosphorus concentration of surface water by 27.33% and increased total phosphors (TP) content of top soil by 7.22%. Further, Ce-MSB tends to increase rice plant height and leaf area. Therefore, Ce-MSB can be used as a promising functionalized biochar to reduce the risk of phosphorus loss from paddy field surface running water. (C) 2017 Published by Elsevier Ltd.

分类号： X5

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