The use of new modified poly(acrylamide) chelating resin with pendent benzothiazole groups containing donor atoms in the removal of heavy metal ions from aqueous solutions

IF 4.5 3区工程技术 Q1 WATER RESOURCES Water Resources and Industry Pub Date : 2014-03-01 DOI:10.1016/j.wri.2014.04.001

Semmedu Selvaraj Kalaivani , Thangaraj Vidhyadevi , Arukkani Murugesan , Kadathur Varathachary Thiruvengadaravi , Dhanasekaran Anuradha , S. Sivanesan , L. Ravikumar

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引用次数: 46

Abstract

The adsorption studies of poly(6-(ethoxybenzothiazole acrylamide) (PEBTA), for Cu(II) and Zn(II) metal ions removal from an aqueous solution have been investigated, as a function of solution pH, adsorbent dose, contact time, initial metal ion concentration and temperature. The chemical and structural characteristics of the adsorbent were determined by the FT-IR, ¹H-NMR, TGA, SEM, and EDAX analysis. The maximum adsorption capacities of the adsorbent for Cu(II) and Zn(II) ions, as calculated from the Langmuir isotherm model, were 273.5 and 216.4 mg/g, respectively. The adsorption kinetic studies show that the adsorption of Cu(II) and Zn(II) ions onto PEBTA follows the pseudo second order kinetic model. Thermodynamic parameters such as ΔG°, ΔH° and ΔS° were also evaluated, and it has been found that the adsorption process is feasible, spontaneous and exothermic in nature. Desorption studies were carried out using 0.3 N HCl, and it revealed that the adsorbed Cu(II) and Zn(II) ions can be easily removed. The adsorption–desorption process is reversible, and this indicates that PEBTA is an effective adsorbent for the removal of heavy metal ions from an aqueous medium.

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利用新型改性聚丙烯酰胺螯合树脂与悬垂的含苯并噻唑基团的给体原子在水溶液中去除重金属离子

研究了聚(6-(乙氧基苯并噻唑丙烯酰胺)(PEBTA)对Cu(II)和Zn(II)金属离子的吸附作用，并考察了其对溶液pH、吸附剂剂量、接触时间、初始金属离子浓度和温度的影响。通过FT-IR、1H-NMR、TGA、SEM和EDAX等分析手段对吸附剂的化学和结构特征进行了表征。根据Langmuir等温模型计算，该吸附剂对Cu(II)和Zn(II)离子的最大吸附量分别为273.5和216.4 mg/g。吸附动力学研究表明，PEBTA对Cu(II)和Zn(II)离子的吸附符合准二级动力学模型。对ΔG°、ΔH°和ΔS°等热力学参数进行了评价，发现吸附过程是可行的、自发的、放热的。用0.3 N HCl进行了解吸实验，结果表明，吸附的Cu(II)和Zn(II)离子很容易被去除。吸附-解吸过程是可逆的，这表明PEBTA是一种去除水中重金属离子的有效吸附剂。

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来源期刊

Water Resources and Industry Social Sciences-Geography, Planning and Development

CiteScore

8.10

自引率

5.90%

发文量

审稿时长

75 days

期刊介绍： Water Resources and Industry moves research to innovation by focusing on the role industry plays in the exploitation, management and treatment of water resources. Different industries use radically different water resources in their production processes, while they produce, treat and dispose a wide variety of wastewater qualities. Depending on the geographical location of the facilities, the impact on the local resources will vary, pre-empting the applicability of one single approach. The aims and scope of the journal include: -Industrial water footprint assessment - an evaluation of tools and methodologies -What constitutes good corporate governance and policy and how to evaluate water-related risk -What constitutes good stakeholder collaboration and engagement -New technologies enabling companies to better manage water resources -Integration of water and energy and of water treatment and production processes in industry