The kinetics of sorption of divalent metal ions onto sphagnum moss peat
The kinetics of sorption of divalent metal ions onto sphagnum moss peat
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DOI：
10.1016/s0043-1354(99)00232-8
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发表时间：
2000-02-01
期刊：
影响因子：
12.8
通讯作者：
McKay, G
中科院分区：
文献类型：
--
作者：
Ho, YS;McKay, G
在不同初始金属离子浓度和不同梨剂量下，泥炭藓泥炭吸附二价金属离子的准二级速率方程已被开发。吸附的动力学是根据在不同的时间间隔吸附的金属的量。结果表明，吸附（化学键合）可能是二价金属离子在泥炭上的吸附速率限制在搅拌间歇接触时间实验。计算了吸附速率常数、平衡吸附量和初始吸附速率。从这些参数，一个经验模型，用于预测吸附的金属离子的吸附容量。(C)2000爱思唯尔科技有限公司版权所有。
A pseudo-second order rate equation describing the kinetics of sorption of divalent metal ions onto sphagnum moss peat at different initial metal ion concentrations and pear doses has been developed. The kinetics of sorption were followed based on the amounts of metal sorbed at various time intervals. Results show that sorption (chemical bonding) might be rate-limiting in the sorption of divalent metal ions onto peat during agitated batch contact time experiments. The rate constant, the equilibrium sorption capacity and the initial sorption rate were calculated. From these parameters, an empirical model for predicting the sorption capacity of metal ions sorbed was derived. (C) 2000 Elsevier Science Ltd. All rights reserved.