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Biodegradable cfaeiating agents for industrial, domestic, and agricultural applications-a review

机译:用于工业,家庭和农业应用的可生物降解的发烟剂-综述

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Aminopolycarboxylates, like ethylenediaminetet-raacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA), are chelating agents widely used in several industrial, agricultural, and domestic applications. However, the fact that they are not biodegradable leads to the presence of considerable amounts in aquatic systems, with serious environmental consequences. The replacement of these compounds by biodegradable alternatives has been the object of study in the last three decades. This paper reviews the most relevant studies towards the use of environmentally friendly chelating agents in a large number of applications: oxidative bleaching, detergents and cleaning compositions, scale prevention and reduction, remediation of soils, agriculture, electroplating, waste treatment, and biocides. Nitrilotriacetic acid (NTA), ethylenediaminedisuccinic acid (EDDS), and iminodisuccinic acid (IDS) are the most commonly suggested to replace the nonbiodegradable chelating agents. Depending on the application, the requirements for metal complexation might differ. Metal chelation ability of the most promising compounds [NTA, EDDS, IDS, methylglycinediacetic acid (MGDA), l-glutamic acid N,N-diacetic acid (GLDA), ethylenediamine-N,N'-diglutaric acid (EDDG), ethylenediamine-N,N'-dimalonic acid (EDDM), 3-hydroxy-2,2-iminodisuccinic acid (HIDS), 2-hydroxyethyliminodiacetic acid (HEIDA), pyridine-2,6-dicarboxylic acid (PDA)] with Fe, Mn, Cu, Pb, Cd, Zn, Ca, and Mg was simulated by computer calculations.The advantages or disadvantages of each compound for the most important applications were discussed.
机译:氨基多羧酸盐,如乙二胺四乙酸(EDTA)和二亚乙基三胺五乙酸(DTPA),是广泛用于多种工业,农业和家庭应用的螯合剂。然而,它们不可生物降解的事实导致水生系统中大量存在,对环境造成严重后果。在过去的三十年中,用可生物降解的替代品替代这些化合物一直是研究的目标。本文概述了在许多应用中使用环保螯合剂的最相关研究:氧化漂白,清洁剂和清洁剂,防垢和还原,土壤修复,农业,电镀,废物处理和杀生物剂。最常建议使用亚硝酸三乙酸(NTA),乙二胺二琥珀酸(EDDS)和亚氨基二琥珀酸(IDS)代替不可生物降解的螯合剂。根据应用,对金属络合的要求可能会有所不同。最有前途的化合物的金属螯合能力[NTA,EDDS,IDS,甲基甘氨酸二乙酸(MGDA),L-谷氨酸N,N-二乙酸(GLDA),乙二胺-N,N'-二戊二酸(EDDG),乙二胺- N,N'-二氢异丁烯酸(EDDM),3-羟基-2,2-亚氨基二琥珀酸(HIDS),2-羟基乙基亚氨基二乙酸(HEIDA),吡啶2,6-二羧酸(PDA)]与Fe,Mn,通过计算机模拟对铜,铅,镉,锌,钙和镁进行了模拟,并讨论了每种化合物在最重要的应用中的优缺点。

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