Saya Laishram, Malik Vipin, Singh Aarushi, Singh Snigdha, Gambhir Geetu, Singh W Rameshwor, Chandra Ramesh, Hooda Sunita
Department of Chemistry, Sri Venkateshwara College (University of Delhi), Dhaula Kuan, New Delhi, 110021, India; Department of Chemistry, Manipur University, Canchipur, Imphal, 795003, Manipur, India.
Department of Chemistry, Acharya Narendra Dev College (University of Delhi), Govindpuri, Kalkaji, New Delhi, 110019, India.
Carbohydr Polym. 2021 Jun 1;261:117851. doi: 10.1016/j.carbpol.2021.117851. Epub 2021 Feb 23.
Researchers nowadays are relentlessly on a race exploring sustainable materials and techniques for the sequestration of toxic dyes and metal ions from water bodies. Biopolymers such as guar gum, owing to its high abundance, low cost and non-toxicity, are potential candidates in this field. Plenty of hydroxyl groups in the polymer backbone enable guar gum to be functionalised or grafted in a versatile manner proving itself as an excellent starting substance for fabricating upgraded materials meant for diverse applications. This review offers a comprehensive coverage of the role of guar gum-based nanocomposites in removal of dyes and heavy metal ions from waste water through adsorption and photo-catalytic degradation. Isotherm and kinetics models, fabrication routes, characterisation techniques, swelling properties and reusability as well as adsorption and degradation mechanisms are outlined. A detailed analysis with convincing results suggests a good future perspective of implementation of these materials in real-time wastewater treatment technology.
如今，研究人员一直在不懈地竞相探索用于从水体中螯合有毒染料和金属离子的可持续材料和技术。诸如瓜尔胶之类的生物聚合物，因其丰富性、低成本和无毒性，成为该领域的潜在候选材料。聚合物主链中大量的羟基使瓜尔胶能够以多种方式进行功能化或接枝，这证明它是制造适用于各种应用的升级材料的优良起始物质。本综述全面涵盖了瓜尔胶基纳米复合材料在通过吸附和光催化降解从废水中去除染料和重金属离子方面的作用。概述了等温线和动力学模型、制备路线、表征技术、溶胀性能和可重复使用性以及吸附和降解机制。一项详细且结果令人信服的分析表明，这些材料在实时废水处理技术中的应用前景良好。
