改性花生壳处理废水中Cr^(6+)的实验研究

Study on the Adsorption of Heavy Metal with Modified Peanut Shell from Waste Water

简述了农林废弃物处理废水中重金属离子的研究现状,实验研究了改性花生壳对废水中Cr6+的去除效果,并探讨了溶液的pH值、Cr6+初始浓度、吸附时间、温度及改性花生壳用量等因素对Cr6+吸附效果的影响。结果表明,改性花生壳对Cr6+有很好的吸附作用,在温度33℃,改性花生壳用量1.0 g,20 mg.L-1的Cr6+溶液50 mL,溶液的pH值2.0,振荡吸附120 min的条件下,Cr6+的吸附去除率达到了98.4%。

The application and research of treated agricultural and forest residues for the removal heavy metals from waste water are reviewed in this paper. Adsorption of Cr^6＋ by modified peanut ell was studied. The effects of pH value, initial Cr^6＋ concentration, adsorption time, temperature d peanut shell dosage on adsorption effect have been investigated. The results indicated that modifled peanut shell had good adsorption to Cr^6＋. In condition of 33℃, 1.0 g modified peanut shell, 50 mL 20 mg·L^-1 Cr^6＋ solution, the initial pH value, contact time 120 min, the adsorption rate of Cr^6＋ can be up to 98.4%.