首页> 外文期刊>Arabian Journal for Science and Engineering >Synthesis and Characterization of Guar Gum Nitrilotriacetic Acid (GNTAA) Resin and its Application in Removal and Recovery of Toxic Metal Ions from Effluent of Apex Steel Industry
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Synthesis and Characterization of Guar Gum Nitrilotriacetic Acid (GNTAA) Resin and its Application in Removal and Recovery of Toxic Metal Ions from Effluent of Apex Steel Industry

机译:瓜尔胶三氟三乙酸(GNTAA)树脂的合成,表征及其在Apex钢铁工业废水中去除和回收有毒金属离子中的应用

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摘要

A new guar gum-based resin containing nitrilotriacetic acid group has been synthesized. Nitrilotriacetic acid group has been incorporated into guar gum by a modified Porath's method of functionali-sation of polysaccharides. The guar gum nitrilotriacetic acid (GNTAA) resin was characterized by FTIR, ion exchange capacity, thermogravimetric and elemental analysis techniques. GNTAA resin can selectively remove trace toxic metal ions from industrial wastewater. Various factors affecting adsorption, pH, distribution coefficients (K_d) and percentage of removal of metal ions were studied. The adsorbed metal ions were effectively eluted by different strength of acid solution. The resin is amenable for continuous process and can be regenerated several times. The adsorption of different metal ions on GNTAA resin follows the order Fe(Ⅱ) > Zn(Ⅱ) > Cu(Ⅱ) > Cd(Ⅱ) > Pb(Ⅱ).
机译:合成了一种新的含有次氮基三乙酸基的瓜尔胶基树脂。硝酸三乙酸基团已通过改良的Porath多糖功能化方法掺入瓜尔胶中。瓜尔胶次氮基三乙酸(GNTAA)树脂的特征在于FTIR,离子交换容量,热重和元素分析技术。 GNTAA树脂可以选择性地从工业废水中去除微量有毒金属离子。研究了影响吸附,pH,分布系数(K_d)和金属离子去除率的各种因素。吸附的金属离子被不同浓度的酸溶液有效洗脱。该树脂适合连续过程,可以再生多次。 GNTAA树脂对金属离子的吸附顺序为Fe(Ⅱ)> Zn(Ⅱ)> Cu(Ⅱ)> Cd(Ⅱ)> Pb(Ⅱ)。

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