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首页> 外文期刊>Solvent Extraction and Ion Exchange >Methylglycinediacetic Acid as a New Complexing Agent for Removal of Heavy Metal Ions from Industrial Wastewater
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Methylglycinediacetic Acid as a New Complexing Agent for Removal of Heavy Metal Ions from Industrial Wastewater

机译：甲基甘氨酸二乙酸作为一种新型络合剂，用于去除工业废水中的重金属离子

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Sorption is a suitable method for the removal of all contaminants in the ionic form, also including heavy metal ions in the presence of complexing agents from different systems. The aim of this study was a comparison of Cu(II), Ni(II), and Pb(II) sorption in the presence of a complexing agent of a new generation on the strongly basic anion exchangers Amberjet 4200, Amberjet 4600, and Purolite A 520E under different chemical conditions. In the investigation, methylglycinediacetic acid (MGDA), patented by BASF The Chemical Company (Germany) and marketed under the brand name Trilon M, was used. It is a strong complexing agent, readily biodegradable in compliance with Organization for Economic Co-operation and Development (OECD) standards. It was found that the sorption efficiency of strongly basic anion exchangers varied, depending on the metal ions concentration, the pH, the contact time, the temperature, and the properties of anion exchangers, that is, their forms. From the determined breakthrough curves, the distribution coefficients and the ion exchange capacities were calculated. Besides, two different kinetic behaviors were tested for the investigated systems. The experimental data fitted using the Langmuir, Freundlich, and Elovich sorption models, were applied to describe the equilibrium isotherms and determine the isotherm constants. The variations of thermodynamic functions were also calculated.View full textDownload full textKeywordsHeavy metals, anion exchangers, methylglycinediacetic, methylglycinediacetic acidRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/07366299.2011.581088
机译：吸附是一种用于除去离子形式的所有污染物的合适方法，该污染物还包括在来自不同系统的络合剂存在下的重金属离子。这项研究的目的是在强碱性阴离子交换剂Amberjet 4200，Amberjet 4600和Purolite上，在新一代络合剂的存在下，对Cu（II），Ni（II）和Pb（II）的吸附进行比较。 520E在不同的化学条件下。在调查中，使用了由德国巴斯夫化学公司（BASF The Chemical Company）获得专利并以商标Trilon M销售的甲基甘氨酸二乙酸（MGDA）。它是一种强络合剂，符合经济合作与发展组织（OECD）的标准，易于生物降解。发现强碱性阴离子交换剂的吸附效率根据金属离子浓度，pH，接触时间，温度和阴离子交换剂的性质即它们的形式而变化。根据确定的穿透曲线，计算分布系数和离子交换容量。此外，针对所研究的系统测试了两种不同的动力学行为。使用Langmuir，Freundlich和Elovich吸附模型拟合的实验数据用于描述平衡等温线并确定等温线常数。还计算了热力学函数的变化。查看全文下载全文关键字重金属，阴离子交换剂，甲基甘氨酸二乙酸，甲基甘氨酸二乙酸相关的var addthis_config = { ，facebook，stumbleupon，digg，google，更多”，发布号：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/07366299.2011.581088

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