Synergistic Effects of Psyllium/Okra Hybrid Backbone Based Bio-Sorbent for Efficient Sequestration of Toxic Uranyl(VI) Ions from Aqueous Media

IF 1 4区化学 Q4 POLYMER SCIENCE

Polymer Science, Series B Pub Date : 2023-07-10 DOI:10.1134/S1560090423701002

Anjali Singh, Balbir Singh Kaith, Rohit Mehra, Sreejay CS, Balram Lohan, Manpreet Singh Bhatti

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Abstract

In order to effectively utilize the okra mucilage and psyllium husk fibre based natural polysaccharides we have prepared acrylamide based semi-interpenetrating network by using citric acid and ammonium persulphate as the cross-linker-initiator system. This paper also discusses the swelling response of the crosslinked networks with respect to time, temperature and pH with maximum swelling percentage of 355%. This smart material designed was further explored for rapid elimination of uranyl(VI) ions from aqueous media. Response surface methodology (RSM) optimized sample showed excellent uptake efficiency via removal of uranyl(VI) ions which showed 97.1% uptake efficiency with an adsorbent dose of 1.0 g, initial concentration of 100 ppb and time duration of 1 h at room temperature. The synthesized sample was further characterized and compared with its respective backbones through techniques like FTIR, SEM-EDAX and PXRD. Thermogravimetric studies revealed the thermal stability of the bio-sorbent. Freundlich adsorption isotherm and pseudo first-order kinetics were favored in both cases. Thus, adsorption studies indicated that the synthesized semi-IPN prepared from natural blends effectively treats industrial waste commercially. The synthesized adsorbent hence proved to be an efficient device with an innovative approach towards environmental remediation.

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车前草/秋葵杂化骨架基生物吸附剂对水中有毒铀酰(VI)离子的协同效应

为了有效地利用秋葵胶和车前草壳纤维为基础的天然多糖，以柠檬酸和过硫酸铵为交联剂-引发剂体系制备了丙烯酰胺为基础的半互穿网络。本文还讨论了交联网络的溶胀响应对时间、温度和pH的影响，最大溶胀率为355%。进一步探索了该智能材料在水介质中快速去除铀酰(VI)离子的能力。响应面法(RSM)优化后的样品在吸附剂用量为1.0 g、初始浓度为100 ppb、室温作用时间为1 h的条件下，对铀酰(VI)离子的吸收率达到97.1%。通过FTIR、SEM-EDAX和PXRD等技术对合成的样品进行了进一步表征，并与各自的骨架进行了比较。热重研究揭示了该生物吸附剂的热稳定性。在这两种情况下，Freundlich吸附等温线和准一级动力学都是有利的。因此，吸附研究表明，由天然共混物制备的合成半ipn在商业上可以有效地处理工业废物。因此，合成的吸附剂被证明是一种有效的装置，是一种创新的环境修复方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Science, Series B 化学-高分子科学

CiteScore

1.80

自引率

8.30%

发文量

审稿时长

>0 weeks

期刊介绍： Polymer Science, Series B is a journal published in collaboration with the Russian Academy of Sciences. Series B experimental and theoretical papers and reviews dealing with the synthesis, kinetics, catalysis, and chemical transformations of macromolecules, supramolecular structures, and polymer matrix-based composites (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed