Department of Chemistry, Faculty of Applied Sciences, Cape Peninsula University of Technology, P.O. Box 1906, Bellville, South Africa.
Mar Pollut Bull. 2013 Jul 15;72(1):222-30. doi: 10.1016/j.marpolbul.2013.04.001. Epub 2013 May 2.
The removal of tributyltin (TBT) from artificial seawater using nZnO, activated carbon and nZnO/activated carbon composite was systematically studied. The equilibrium and kinetics of adsorption were investigated in a batch adsorption system. Equilibrium adsorption data were analyzed using Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) isotherm models. Pseudo first- and second-order, Elovich, fractional power and intraparticle diffusion models were applied to test the kinetic data. Thermodynamic parameters such as ΔG°, ΔS° and ΔH° were also calculated to understand the mechanisms of adsorption. Optimal conditions for the adsorption of TBT from artificial seawater were then applied to TBT removal from natural seawater. A higher removal efficiency of TBT (>99%) was obtained for the nZnO/activated carbon composite material and for activated carbon but not for nZnO.
采用 nZnO、活性炭和 nZnO/活性炭复合材料系统地研究了从人工海水中去除三丁基锡（TBT）的方法。在间歇吸附系统中研究了吸附的平衡和动力学。使用 Langmuir、Freundlich、Temkin 和 Dubinin-Radushkevich（D-R）等温模型分析了平衡吸附数据。应用拟一级和二级、Elovich、分数幂和颗粒内扩散模型来检验动力学数据。还计算了热力学参数，如ΔG°、ΔS°和ΔH°，以了解吸附的机理。然后将吸附 TBT 的最佳条件应用于从天然海水中去除 TBT。nZnO/活性炭复合材料和活性炭对 TBT 的去除率较高（>99%），而 nZnO 则不然。
