Modified biopolymers in wastewater treatment: A review

Saiyad, Mamta; Shah, Nimish; Joshipura, Milind; Dwivedi, Ankur; Pillai, Shibu

doi:10.1016/j.matpr.2024.01.031

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…These complex and chemically stable macromolecules are not easily degraded in water [1]. Currently, various methods have been attempted to treat dye wastewater, including biodegradation [2], chemical precipitation [3], and physical adsorption [4] et al However, these methods often face challenges in achieving large-scale utilization in practical production due to issues such as high cost, high energy consumption, and secondary pollution [5]. In recent years, photocatalysis technology has been considered the most promising method for water pollution treatment due to its low energy consumption, simple preparation process, low cost, fast degradation rates, and the possibility of recycling [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A Novel SnO2/ZnFe2O4 Magnetic Photocatalyst with Excellent Photocatalytic Performance in Rhodamine B Removal

Hao,

Xiao,

Liu

et al. 2024

Catalysts

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In this study, we prepared the SnO2/ZnFe2O4 (SZ) composite magnetic photocatalyst via a two-step hydrothermal method. Structural and performance analyses revealed that SZ-5 with a ZnFe2O4 mass ratio of 5% (SZ-5) exhibited optimal photocatalytic activity, achieving a 72.6% degradation rate of Rhodamine B (RhB) solution within 120 min. SZ-5 consisted of irregular nano blocks of SnO2 combined with spherical nanoparticles of ZnFe2O4, with a saturated magnetization intensity of 1.27 emu/g. Moreover, the specific surface area of SnO2 loaded with ZnFe2O4 increased, resulting in a decreased forbidden bandwidth and expanded light absorption range. The construction of a Z-type heterojunction structure between SnO2 and ZnFe2O4 facilitated the migration of photogenerated charges, reduced the recombination rate of electron-hole pairs, and enhanced electrical conductivity. During the photocatalytic reaction, RhB was degraded by·OH, O2−, and h+, in which O2− played a major role.

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Section: Introductionmentioning

confidence: 99%

A Novel SnO2/ZnFe2O4 Magnetic Photocatalyst with Excellent Photocatalytic Performance in Rhodamine B Removal

Hao,

Xiao,

Liu

et al. 2024

Catalysts

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Advancements in Biopolymer‐Derived Graft Copolymers: A Comprehensive Review on Their Application in Sustainable Wastewater Treatment

Sinha

2024

Environmental Quality Mgmt

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Rising concerns over water pollution and the depletion of non‐renewable resources have propelled the exploration of eco‐friendly and sustainable wastewater treatment alternatives. Biopolymer‐derived graft copolymers emerge as a promising solution, offering biodegradability, cost‐effectiveness, versatility, and enhanced functionality. This review provides a comprehensive overview of the latest developments in utilizing these copolymers as eco‐friendly flocculants for wastewater treatment. It covers synthesis methods for functionalized biopolymer‐based flocculants, diverse flocculation mechanisms, and their efficacy in solid–liquid separation. The article explores applications for removing pollutants, emphasizing biodegradability, cost‐effectiveness, and versatility. Special attention is given to the environmental impact, critically analyzing how these copolymers contribute to sustainable water treatment practices. The review also discusses potential future prospects and advancements in addressing global water pollution challenges using biopolymer‐derived graft copolymers.

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Current Status and Applications of Gamma Radiation-induced Graft Copolymerized Chitosan

Torres

2025

COC

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Chitosan (CS) is a natural polymer obtained by removing acetyl groups from chitin through alkaline hydrolysis. It possesses biodegradable properties and exhibits immunological, antibacterial, and wound-healing activities. This polysaccharide has undergone modification through radiation-induced graft copolymerization to broaden its application scope. The potential applications of CS can be expanded by introducing side chains through grafting. This article aims to review the innovative alternatives of gamma-graft-copolymerized CS and, for the first time, comprehensively examines the current applications of CS derivatives in dye removal, metal adsorption, antibacterial interventions, biomedical practices, drug delivery systems, and tissue engineering.

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Modified biopolymers in wastewater treatment: A review

Cited by 3 publications

References 34 publications

A Novel SnO2/ZnFe2O4 Magnetic Photocatalyst with Excellent Photocatalytic Performance in Rhodamine B Removal

A Novel SnO2/ZnFe2O4 Magnetic Photocatalyst with Excellent Photocatalytic Performance in Rhodamine B Removal

Advancements in Biopolymer‐Derived Graft Copolymers: A Comprehensive Review on Their Application in Sustainable Wastewater Treatment

Current Status and Applications of Gamma Radiation-induced Graft Copolymerized Chitosan

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