研究用食物废弃物制得的吸附剂(FRA )对水中多种重金属的吸附 ,并研究酒石酸钾钠对FRA吸附重金属的影响 ,探讨影响的机理.结果表明 ,两种重金属离子共存体系中重金属离子的竞争吸附系数相当 ,均在0 .46~0 .54之间.增加共存重金属种类减弱FRA对重金属的吸附效果.初始浓度较低时 ,竞争吸附对FRA吸附量的影响较小.较低pH值时酒石酸钾钠的浓度对重金属Cu2+ ,Zn2+及Cd2+的吸附去除效果影响更大.FRA对Cu2+ ,Zn2+ ,Pb2+和Cd2+的吸附符合Langmuir等温式.%Absorbent prepared from food waste (FRA) is used to study the competitive adsorption of heavy metal ions in co-existing system and the effects of potassium sodium tartrate on adsorption of heavy metal ions also are studied to understand the influence mechanism .The results indicate that the competitive coefficients are even and arrange from 0 .46 to 0 .54 in the system with two kinds of heavy metals .The adsorption of heavy metal ions decreases with the increase of the kinds in the system .The competitive adsorptions are weak when the initial concentration of heavy metal ions is lower .The effects of potassium sodium tartrate on the adsorption of Cu2+ ,Zn2+ and Cd2+ are great at lower pH .Langmuir isotherm model is ap-plied to describe the adsorption of the heavy metals ions onto FRA .
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