Chitosan-based adsorbents have attracted increasing attention in water and wastewater treatment in recent years due to its abundance and low price, as well as rich amino and hydroxyl groups. Howeve...

Removal of various pollutants from water and wastewater by modified chitosan adsorbents

A review on heterogeneous photocatalysis for environmental remediation: From semiconductors to modification strategies

Removal of phosphate and nitrate ions from aqueous solution using La3+ incorporated chitosan biopolymeric matrix membrane.

Engineering and modeling perspectives on photocatalytic reactors for water treatment.

Geraniol grafted chitosan oligosaccharide as a potential antibacterial agent.

Immobilized TiO2/chitosan beads for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid

Nitrate decontamination through functionalized chitosan in brackish water.

Biopolymer-supported TiO2 as a sustainable photocatalyst for wastewater treatment: a review

Effective pesticide remediation technology demands amendments in the advanced oxidation process for its continuous treatment and catalyst recovery. The evidence of 2,4-dichlorophenoxyacetic acid (2,4-D), an herbicide in water bodies, poses a major environmental threat to both humans and aquatic organisms. In the present study, a recirculation type photocatalytic reactor was developed to treat 2,4-dichlorophenoxyacetic acid using chitosan-TiO2 beads prepared via impregnation method under UV light. At optimized conditions, chitosan-TiO2 beads showed a maximum photocatalytic degradation of 86% than commercial TiO2 (65%) and followed pseudo first-order reaction. The 2,4-D degradation follows pseudo first-order kinetics under UV irradiation with a rate constant of 0.12 h−1, and the intermediates were identified using LCMS analysis. The total operational cost of the chitosan-TiO2 catalyst was found to be profitable (Rs. 1323 for 2 L) than that of TiO2 (Rs. 1679) at optimized conditions. The beads were reusable up to 4 consecutive cycles without loss in efficiency. This study briefs photocatalytic removal of 2,4-dichlorophenoxyacetic acid in a recirculation-type reactor for its reliability, low cost, efficiency, reusability, and commercialization.

Photocatalytic degradation of 2,4-dicholorophenoxyacetic acid by TiO2 modified catalyst: kinetics and operating cost analysis

Chitosan-based beads as sustainable adsorbents for wastewater remediation: a review

Sowmya Appunni

Papers

Immobilized TiO2/chitosan beads for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid

Nitrate decontamination through functionalized chitosan in brackish water.

Biopolymer-supported TiO2 as a sustainable photocatalyst for wastewater treatment: a review

Photocatalytic degradation of 2,4-dicholorophenoxyacetic acid by TiO2 modified catalyst: kinetics and operating cost analysis

Chitosan-based beads as sustainable adsorbents for wastewater remediation: a review