Synthesis of guar gum-acrylic acid graft copolymers based biodegradable adsorbents for cationic dye removal
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- 作者：Reena Sharma ; Susheel Kalia ; Balbir S. Kaith…
- 关键词：Hydrogel ; Interpenetrating polymer network ; Biodegradation ; Dye adsorption
- 刊名：International Journal of Plastics Technology
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：20
- 期：2
- 页码：294-314
- 全文大小：2,715 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Polymer Sciences - 出版者：Springer India
- ISSN：0975-072X
- 卷排序：20
文摘
Guar gum-poly(acrylic acid-aniline) based interpenetrating network hydrogels were prepared via two-step aqueous polymerization in which aniline monomer was in situ polymerized to induce electrical conductivity. The hydrogels were characterized by FTIR, TGA and SEM techniques. Biodegradation of synthesized hydrogels was performed in soil burial and composting conditions. Synthesized hydrogel was evaluated as an adsorbent to remove cationic dye [methylene blue (MB)] from aqueous solution. The contact time, adsorbent dosage, pH and temperature were optimized for maximum adsorption. The kinetics of MB adsorption was analyzed using the pseudo first order and pseudo second order models. Pseudo second order kinetic model represents better experimental data than the pseudo first order model, which indicates that adsorption system fits into second order kinetics model.