Biowaste-derived hybrid adsorbent for efficient Cr (VI) removal

IF 4.9 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-02-12 DOI:10.1007/s10570-025-06426-w

Saksham, Balbir Singh Kaith, Rakesh Kumar, Rohit Mehra, Manpreet Singh Bhatti

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Abstract

Sustainable solutions for efficient chromium (Cr) removal, particularly at low concentrations, remain a critical challenge. Present work outlines the development of a semi-interpenetrating polymer network (semi-IPN) for the effective removal of hexavalent chromium (Cr (VI)) ions from aqueous solutions. The semi-IPN was synthesized using a 1:1 (w/w) hybrid backbone of nanocellulose and pectin, with itaconic acid grafted onto it through a crosslinker-initiator system comprising N, N’-methylene bisacrylamide (MBA) and ammonium persulfate (APS) under microwave irradiation. Synthesis parameters were optimized using response surface methodology (RSM), resulting in a maximum grafting yield of 172.9%. The semi-IPN achieved an impressive Cr (VI) removal efficiency of 92.2% under optimal conditions: 0.2 g of adsorbent per 25 mL solution, pH 6.0, 120 min contact time, and an initial Cr (VI) concentration of 5 mg/L. Kinetic and isotherm studies indicated that the adsorption process conformed to a pseudo-second-order model and was best described by the Freundlich isotherm. The semi-IPN also showed strong recyclability, retaining 81.4% of its adsorption capacity after five cycles of reuse. These results highlight the potential of the semi-IPN as an effective, ecofriendly and reusable adsorbent for Cr (VI) ion removal.

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.