Chitosan-based adsorbents for remediation of toxic dyes from wastewater: A review on adsorption mechanism, reusability, machine learning based modeling and future perspectives.

Journal: International journal of biological macromolecules
Published Date: Apr 23, 2025

Abstract

The disposal of recalcitrant dyes in aquatic environments from various industrial sectors is a threat to both the plant and animal kingdom. The presence of dyes in various water bodies undermines the availability of uncontaminated drinking water and may result in serious health-related issues and diseases. Therefore, it is of utmost importance to get rid of these harmful dyes from the aquatic environment. Hence various treatment techniques came to the fore, but they have their corresponding advantages and disadvantages. Several researchers have reported the adsorption of dyes with carbon-based composites, polymeric materials, and metal-based nanoparticles. However, the one with biocompatible materials or biopolymers deserves special attention as they are benign from an environmental viewpoint. We have chosen chitosan as our material of interest and elaborated on the positive aspects of chitosan as an excellent candidate for dye adsorption. Although a plethora of review articles has been disseminated in the past to underscore the utilization of chitosan-based adsorbents in the extraction of dyes, this manuscript endeavors to furnish a thorough examination of the complete adsorption process, encompassing its parameters and kinetics, thus facilitating a reader lacking foundational knowledge in this field to attain a more comprehensible understanding of the subject matter. This review also integrates a comprehensive overview of optimization methodologies for dye adsorption and examines relevant patents-an area that, to the best of our knowledge, has not been thoroughly addressed in previous review articles. Conclusively, it can be stated that chitosan can efficiently adsorb dye from wastewater showing good performance even after five cycles of adsorption/desorption. Moreover, several software programs can be used for optimizing maximum dye adsorption capacity of chitosan which shows well alignment with experimental results, thus making it suitable for real-life applications.

Authors

  • Jyotishka Nath
    Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
  • Mitali Dewan
    Department of Chemistry, Shahid Matangini Hazra Government General Degree College for Women, Chakshrikrishnapur, Kulberia, P.O: Kulberia, Dist: Purba Medinipur, 721649, West Bengal, India.
  • Adrija Ghosh
    Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
  • Suprakas Sinha Ray
    Department of Chemical Sciences, University of Johannesburg, Doornfontein, Johannesburg 2028, South Africa; DST-CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa.
  • Jonathan Tersur Orasugh
    Department of Chemical Sciences, University of Johannesburg, Doornfontein, Johannesburg 2028, South Africa. Electronic address: calunivjto@gmail.com.
  • Basudev Lahiri
    Indian Institute of Technology Kharagpur, Department of Electronics & Electrical Communication Engineering at Indian Institute of Technology, Kharagpur, India.
  • Dipankar Chattopadhyay
    Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India. Electronic address: dcpst@caluniv.ac.in.
  • Arpita Adhikari
    Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India. Electronic address: arpita.adhikarichem2023@gmail.com.

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