Synthesis, Characterization and Application of Karak Bentonite Clay-Graft-Poly (Acrylamide/Co- Acrylic Acid) Superabsorbent Composite and its Adsorption Study for Selected Heavy Metals

IF 0.6 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Journal of the chemical society of pakistan Pub Date : 2023-01-01 DOI:10.52568/001240/jcsp/45.03.2023

Shaheen Wali Shaheen Wali, Manzoor Iqbal Khattak Manzoor Iqbal Khattak, Mahmood Iqbal Khattak and Ashif Sjjad Mahmood Iqbal Khattak and Ashif Sjjad

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引用次数: 0

Abstract

A novel superabsorbent composite (SAC) based on bentonite, acrylamide and acrylic acid was synthesized. The effects of bentonite quantity, initiator content on the grafting degree and on the water absorbency for the samples were studied. Synthesis mechanism, morphology and thermal properties of the SAC were characterized. FTIR results confirmed the presence of acrylamide/ acrylic acid onto bentonite backbone while TGA showed that introduction of 70 % bentonite to polymer increases thermal stability. The SAC was also tested in the removal of heavy metal in aqueous solution where kinetics analyses were performed using Langmuir adsorption isotherm. The optimum adsorption capability of heavy metal ions onto bentonite-based SAC from solution was 92, 48 and 91 % for Pb++, Ni++, and Cu++ respectively. The unique characteristics of these SAC such as its slow-release and water-retention capability, nontoxicity in soil, environmentally friendly and high capacity for the removal of heavy metals might be very valuable in agriculture and environmental studies

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卡拉克膨润土-接枝聚丙烯酰胺/丙烯酸高吸水性复合材料的合成、表征、应用及对重金属的吸附研究

合成了一种以膨润土、丙烯酰胺和丙烯酸为基料的新型高吸水性复合材料。研究了膨润土用量、引发剂含量对接枝度和吸水率的影响。对SAC的合成机理、形貌和热性能进行了表征。红外光谱(FTIR)结果证实膨润土骨架上存在丙烯酰胺/丙烯酸，热重分析(TGA)结果表明，加入70%膨润土后聚合物的热稳定性提高。在Langmuir等温线吸附动力学分析中，还测试了SAC对水溶液中重金属的去除。膨润土基SAC对Pb++、Ni++和Cu++的最佳吸附率分别为92%、48%和91%。该材料具有缓释保水能力强、对土壤无毒、环境友好、重金属去除能力强等特点，在农业和环境研究中具有重要的应用价值

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来源期刊

Journal of the chemical society of pakistan 化学-化学综合

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

3.4 months

期刊介绍： This journal covers different research areas in the field of Chemistry. These include; Analytical Chemistry, Applied Chemistry, Biochemistry, Environmental Chemistry, Industrial Chemistry, Inorganic Chemistry, Organic Chemistry and Physical Chemistry. The journal publishes full length articles and Reviews from researchers in academia in addition to featuring comments. Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry.

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