期刊论文

Liao, B.

中文

环境科学学报

0253-2468

2018

38

2

492-500

10.13671/j.hjkxxb.2017.0355

(41501344):国家自然科学基金 (农办财函[2016]6号):农业部与财政部科研专项 (No.2006180):湖南省重点学科建设项目 (41501344):Supported by the National Natural Science Foundation of China (NBCH [2016] 6):the Special Fund for Ministry of Agriculture and Finance (2006180):the Key Discipline Construction Projects in Hunan Province

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将水稻谷壳经改性和负磁后制得磁性谷壳生物炭(BC-Fe),通过正交实验研究了pH、生物炭添加量、吸附时间和转速对磁性谷壳生物炭吸附实际污染废水中Cd~(2+)和Zn~(2+)的影响,提出了磁性谷壳生物炭作为实际污染废水处理材料的最佳操作条件,并应用于多步骤废水处理系统中,同时进行了BC-Fe的再生吸附实验.正交实验结果表明,在pH为6.0、固液比为6.0 g·L~(-1)、吸附时间为1.0 h、转速为160 r·min~(-1)的条件下,磁性谷壳生物炭对Cd~(2+)和Zn~(2+)的去除率最高,分别达到61.1%和60.4%,吸附量分别为8.6 mg·g~(-1)和21.3 mg·g~(-1).在实验所设条件下,Cd~(2+)和Zn~(2+)的综合去除效果随着pH和生物炭添加量...

In order to study the effects of magnetic biochar (BC-Fe, made from rice husks) on the adsorption of Cd2+ and Zn2+ in practical heavy metals wastewater, the solution pH, dosage, adsorption time, and rotation rate were investigated by means of an orthogonal experiment. Meanwhile, the optimal operating conditions for practical wastewater treatment were put forward using BC-Fe as a material in a multi-step wastewater treatment system, and the regeneration experiment of BC-Fe was also investigated. The results in orthogonal experiment show that at ...