泥炭吸附水中Pb^2＋的研究

试验研究了泥炭对Pb^2＋的等温吸附特征,并探讨了泥炭的质量浓度,pH值,共存Cu^2＋对其吸附Pb^2＋性能的影响。结果表明：其吸附特征符合Freund lich等温吸附;泥炭对Pb^2＋及存在Cu^2＋干扰时吸附的最佳pH分别为5,6;最大吸附容量分别为59.41 mg/g,76.38 mg/g,且存在Cu^2＋干扰时,泥炭对Pb^2＋的吸附率始终较只存在Pb^2＋时大,当泥炭量为12 g时,吸附率分别为95.2%、93.5%,说明Cu^2＋的存在促进了泥炭对Pb^2＋的吸附。

Study on the Adsorption of Pb2+ by Peat in Wastewater

Adsorption isotherm property of Pb^2＋ by peat was studied,and the effect of the concentration of absorbentmass,value of pH,and Cu^2＋ coexisted on absorbent properties were investigated.The results indicate that,the adsorption fit for Freundlich isotherm,the best effect of adsorption of Pb^2＋ and with Cu^2＋ coexisted was at the pH value of 5and 6 respectively,and the adsorption capacity was 59.41 mg/g,76.38 mg/g respectively;with Cu^2＋ coexisted the effect of adsorption by peat was always higher,and the effect of eli minating was 95.2%,93.5% separately.When the concentration of absorbentmass was 12.0 g/l,which show that Cu^2＋ coexisted facilitated the adsorption of Pb^2＋ by peat.