Guar gum based nanocomposites: Role in water purification through efficient removal of dyes and metal ions

Laishram Saya; Vipin Malik; Aarushi Singh; Snigdha Singh; Geetu Gambhir; W Rameshwor Singh; Ramesh Chandra; Sunita Hooda

doi:10.1016/j.carbpol.2021.117851

Guar gum based nanocomposites: Role in water purification through efficient removal of dyes and metal ions

Carbohydr Polym. 2021 Jun 1:261:117851. doi: 10.1016/j.carbpol.2021.117851. Epub 2021 Feb 23.

Authors

Laishram Saya¹, Vipin Malik², Aarushi Singh³, Snigdha Singh³, Geetu Gambhir², W Rameshwor Singh⁴, Ramesh Chandra⁵, Sunita Hooda⁶

Affiliations

¹ 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.
² Department of Chemistry, Acharya Narendra Dev College (University of Delhi), Govindpuri, Kalkaji, New Delhi, 110019, India.
³ Drug Discovery and Development Laboratory, Department of Chemistry (University of Delhi), Delhi, 110007, India; Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
⁴ Department of Chemistry, Manipur University, Canchipur, Imphal, 795003, Manipur, India.
⁵ Drug Discovery and Development Laboratory, Department of Chemistry (University of Delhi), Delhi, 110007, India.
⁶ Department of Chemistry, Acharya Narendra Dev College (University of Delhi), Govindpuri, Kalkaji, New Delhi, 110019, India. Electronic address: sunitahooda@andc.du.ac.in.

PMID: 33766347
DOI: 10.1016/j.carbpol.2021.117851

Abstract

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.

Keywords: Adsorption; Degradation; Guar gum; Isotherm; Kinetics; Swelling.

Publication types

Review