Cellulose‐Based Materials for Water Purification

Abstract

Cellulose is a linear syndiotactic homopolymer, made up of glucose units designated as D‐anhydroglucopyranose units (AGU). The glucose units are connected with each other by b‐(l‐4)‐glycosidic linkage to form a dimeric structure known as cellobiose. These units are assembled into microfibils in a heirarchial manner with excellent strength and stiffness. The properties of cellulose can be further enhanced by either surface functionalization or by converting it to nano form. Nanocellulosic materials are non‐toxic, biodegradable, biocompatible and exhibit enhanced surface properties so widely used for purification of water through adsorption process. This review outlined the most recent updates of uses of cellulose and cellulose derived nano material, composite and nanocomposite as a new class of adsorbents for water remediation.

Changes in strontium levels in bark and over the past 40 years in the wood of trees exposed to high levels of air pollution

“…The ionic power of the solution rises with the concentration of KCl, and Sr (II) adsorption in carboxymethylcellulose declines. This indicates that ions' adsorption is also affected by ionic force from the medium (Jain et al 2022).…”

Unveiling the revolutionary role of nanoparticles in the oil and gas field: Unleashing new avenues for enhanced efficiency and productivity

“…Literatures report that adding succinic acid groups to cellulose nanocrystals (CNCs) dramatically improved their ability to bind Pb 2+ and Cd 2+ out of aqueous solutions [ [63] , [64] , [65] , [66] , [67] , [68] ]. Additionally, heavy metal ions, organic solvents, and crude oil can all be removed using cellulose-based nanocomposites as adsorbents [ 69 , 70 ]. It has been reported that silane-treated, cross-linked polyvinyl alcohol (PVA) and cellulose nanofibril (CNF) hybrid organic aerogels exhibit excellent absorption for heavy metal ions (such as Pb 2+ and Hg 2+ ) and crude oil [ 71 ].…”

Advances in Sorptive Removal of Hexavalent Chromium (Cr(VI)) in Aqueous Solutions Using Polymeric Materials

“…Cellulose-based adsorbents have been widely used in water treatment, and their modification methods, properties, and application have been reviewed in literature [ 23 , 57 , 58 , 59 ]. However, the sorptive removal of Cr(VI) by cellulose-based adsorbents has not been systematically reviewed.…”