Raval Nirav P, Shah Prapti U, Shah Nisha K
Department of Environmental Science, School of Sciences, Gujarat University, Ahmedabad, Gujarat 380 009, India.
Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat 380 009, India.
J Environ Manage. 2016 Sep 1;179:1-20. doi: 10.1016/j.jenvman.2016.04.045. Epub 2016 May 3.
Among various methods adsorption can be efficiently employed for the treatment of heavy metal ions contaminated wastewater. In this context the authors reviewed variety of adsorbents used by various researchers for the removal of nickel(II) ions from aqueous environment. One of the objectives of this review article is to assemble the scattered available enlightenment on a wide range of potentially effective adsorbents for nickel(II) ions removal. This work critically assessed existing knowledge and research on the uptake of nickel by various adsorbents such as activated carbon, non-conventional low-cost materials, nanomaterials, composites and nanocomposites. The system's performance is evaluated with respect to the overall metal removal and the adsorption capacity. In addition, the equilibrium adsorption isotherms, kinetics and thermodynamics data as well as various optimal experimental conditions (solution pH, equilibrium contact time and dosage of adsorbent) of different adsorbents towards Ni(II) ions were also analyzed. It is evident from a literature survey of more than 190 published articles that agricultural solid waste materials, natural materials and biosorbents have demonstrated outstanding adsorption capabilities for Ni(II) ions.
在各种方法中，吸附可有效地用于处理重金属离子污染的废水。在此背景下，作者综述了不同研究人员用于从水环境中去除镍（II）离子的各种吸附剂。这篇综述文章的目标之一是汇集关于一系列潜在有效去除镍（II）离子吸附剂的零散现有知识。这项工作批判性地评估了现有关于各种吸附剂（如活性炭、非常规低成本材料、纳米材料、复合材料和纳米复合材料）对镍吸附的知识和研究。根据整体金属去除率和吸附容量对系统性能进行评估。此外，还分析了不同吸附剂对Ni（II）离子的平衡吸附等温线、动力学和热力学数据以及各种最佳实验条件（溶液pH值、平衡接触时间和吸附剂用量）。从对190多篇已发表文章的文献调查中可以明显看出，农业固体废物材料、天然材料和生物吸附剂对Ni（II）离子表现出了出色的吸附能力。
