[目的]研究生物吸附剂 Bio －matrix 对常规重金属 Cu 2＋、Ni 2＋、Cr 3＋的吸附性能。[方法]考察不同温度、吸附剂投加量、吸附时间、pH 对吸附量的影响，并分析了 Bio －matrix 对 Cu 2＋的等温吸附情况。[结果]Bio －matrix 吸附剂对 Cu 2＋的吸附效果优于 Ni 2＋和Cr ，温度对吸附量影响较小，3 h 可达到吸附平衡，单位吸附量随 pH 的升高先增大后减小，在 pH 4左右时对重金属的单位吸附量最大，Bio －matrix 对 Cu 3＋生物吸附剂去除废水中重金属提供了可行途径。2＋的吸附等温线与 Freundlich 方程有较好的拟合性，饱和吸附量为19．3 mg ／g。[结论]该研究为 Bio －matrix 作为生物吸附剂去除废水中重金属提供了可行途径。%Objective] To research the adsorption performance of biosorbent Bio-matrix on conventional heavy metal Cu , Ni 2 + and Cr . [Method] Effects of pH, temperature, biosorbent dosage and adsorption time on adsorbing capacity were researched, isothermal adsorption of Bio-matrix to Cu 2 + was analyzed.[Result] Bio-matrix had better adsorption effects to Cu 2 + than Ni 2 + and Cr 3 +.Unit adsorption capacity firstly enhanced and then decreased with pH, and reached the maximum at pH 4.The adsorption isotherm of Cu 2 + had better fitting with the Freundlich equation, and the saturated adsorption capacity was 19.3 mg /g.[Conclusion] This research provides feasible way for the heavy metal removal by Bio-matrix biosorbent.
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