泥炭对重金属离子的吸附性能

Specific properties of adsorption for heavy metal ions on peat

以泥炭为吸附剂对Pb2+、N i2+、Cu2+重金属离子进行吸附实验,探讨pH、吸附时间、吸附剂质量浓度对吸附剂吸附性能的影响。实验表明:采用泥炭作为吸附剂时,pH=6、吸附剂质量浓度为2 g/L、吸附时间为2 h时对重金属离子的吸附效果最佳,其中,对Pb2+去除效果最好,去除率可达97%;其次是N i2+,去除率为83%;吸附效果不好的是Cu2+,吸附率仅为65%。采用壳聚糖与泥炭复配吸附Cu2+,吸附率可达到85.28%。

The paper describes the study of the adsorption of heavy metal ions - Pb^2＋ , Ni^2＋ , Cu^2＋ using peat as adsorbent and the study of the effect of the value of pH, absorbent time, and concentration of absorbent mass on absorbent specific properties. The results indicate that pH of 6, the dosage of peat of 2 g/L and the absorbent time of two hours can yield the best effect of eliminating Pb^2＋ and 97% rate of eliminating Pb^2＋ the second is Ni^2＋ , which can realize the elimination of 83% and the worst is Cu^2＋ in that the absorption rate is as low as 65 %. The use of peat and chitosan allows the absorption rate of 85.28%.