用活性炭从间歇系统的道路径流中去除溶解的金属-平衡和动力学*

K. Pawluk, J. Fronczyk
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引用次数: 5

摘要

摘要/ Abstract摘要:活性炭在间歇系统中去除道路径流中的溶解金属——平衡与动力学。活性炭是一种去除水中有机和无机污染物的有效吸附剂。采用颗粒活性炭(GAC)对重金属(Cd、Cu、Ni、Pb和Zn)的吸附过程进行了研究。研究(在批处理系统中进行)作为时间,重金属浓度和pH值的函数进行。结果表明,GAC能有效去除上述金属。采用多种动力学模型研究了吸附过程的机理。通过Langmuir等温线计算得到,在中性条件下对Cd、Cu、Ni、Pb和Zn的最大吸附量分别为3.010、3.662、4.430、3.800和4.169 mg·g-1,在酸性条件下为2.684、2.578、3.482、2.592和2.253 mg·g-1。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic*
Abstract: Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic. Activated carbon is an effective sorbent for removing organic and inorganic contaminants from aqueous solutions. In conducted experiments, granulated activated carbon (GAC) was used to examine the adsorption processes of heavy metals (Cd, Cu, Ni, Pb and Zn). Studies (performed in batch system) were carried out as a function of time, heavy metals concentration and pH values. The obtained results show that GAC effectively removes mentioned metals. Numerous kinetic models were used to investigate the mechanism of adsorption processes. Using the Langmuir isotherm, the maximum adsorption capacities were calculated to be 3.010, 3.662, 4.430, 3.800 and 4.169 mg·g–1 for Cd, Cu, Ni, Pb and Zn, respectively, in neutral conditions and 2.684, 2.578, 3.482, 2.592 and 2.253 mg·g–1 in acidic conditions.
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