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Removal of heavy metal ions form acidic electrolyte for stainless steel electropolishing via adsorption using Polish peats
Journal of Water Process Engineering ( IF 7 ) Pub Date : 2021-06-25 , DOI: 10.1016/j.jwpe.2021.102169
S. Charazińska , P. Lochyński , E. Burszta-Adamiak

The use of natural materials for wastewater treatment is a rapidly evolving issue. Natural materials are often low-cost or waste materials, and they are readily available. In the case of industrial wastewater treatment, the use of natural sorbents for the removal of heavy metals has shown positive results for many of the materials tested. However, there are ample reports in the literature of successes based solely on prepared solutions and laboratory trials, which may not actually be as effective when applied under industrial conditions. In the present work, the possibility of using Polish peat from 5 health resorts (Połczyn Zdrój, Goczałkowice Zdrój, Wieniec Zdrój, Kamień Pomorski and Kołobrzeg) as a sorbent for heavy metals in industrial wastewater from the steel electropolishing process is investigated. The materials were characterized and then sorption tests using both laboratory and industrial wastewater solutions were performed. The peat used turned out to be an effective material for both model laboratory and industrial wastewater characterized by high initial concentrations of metals such as iron, chromium, nickel, and copper. Removal rate for initial concentration of 1000 mg/dm3 was 99% for chromium and iron, and 66% for nickel and cooper. The total removal capacity was 30.7 mg/g and indicated the following order Fe(III) > Cr(III) > Cu(II) > Ni(II) in the wide range of industrial electrolyte for stainless steel electropolishing. The method of conducting the research and characteristics of the materials open up new opportunities for removing heavy metal ions in an acidic environment without prior pH correction.



中文翻译:

使用波兰泥炭通过吸附去除形成不锈钢电解抛光的酸性电解质中的重金属离子

使用天然材料进行废水处理是一个快速发展的问题。天然材料通常是低成本或废料,而且很容易获得。在工业废水处理的情况下,使用天然吸附剂去除重金属对许多测试材料显示出积极的结果。然而,文献中有大量的成功报告完全基于准备好的溶液和实验室试验,在工业条件下应用时可能实际上并不那么有效。在目前的工作中,研究了使用来自 5 个疗养胜地(Połczyn Zdrój、Goczałkowice Zdrój、Wieniec Zdrój、Kamień Pomorski 和 Kołobrzeg)的波兰泥炭作为钢铁电解抛光过程工业废水中重金属吸附剂的可能性。对材料进行表征,然后使用实验室和工业废水溶液进行吸附测试。所使用的泥炭被证明是模型实验室和工业废水的有效材料,其特征是初始浓度高的金属,如铁、铬、镍和铜。初始浓度为 1000 mg/dm 时的去除率3是铬和铁的 99%,镍和铜的 66%。总去除量为 30.7 mg/g,表明在不锈钢电解抛光的各种工业电解液中,Fe(III) > Cr(III) > Cu(II) > Ni(II) 的顺序如下。进行研究的方法和材料的特性为在酸性环境中去除重金属离子开辟了新的机会,而无需事先进行 pH 校正。

更新日期:2021-06-25
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