Recent advances in the removal of dyes from wastewater using low-cost adsorbents

Muhammad Bilal, Ihsanullah Ihsanullah*, Mansoor Ul Hassan Shah*, Ambavaram Vijaya Bhaskar Reddy, Tejraj M. Aminabhavi*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

65 Scopus citations

Abstract

The presence of hazardous dyes in wastewater cause disastrous effects on living organisms and the environment. The conventional technologies for the remediation of dyes from water have several bottlenecks such as high cost and complex operation. This review aims to present a comprehensive outlook of various bio-sorbents that are identified and successfully employed for the removal of dyes from aqueous environments. The effect of physicochemical characteristics of adsorbents such as surface functional groups, pore size distribution and surface areas are critically evaluated. The adsorption potential at different experimental conditions of diverse bio-sorbents has been also explored and the influence of certain key parameters like solution pH, temperature, concentration of dyes, dosage of bio-sorbent and agitation speed is carefully evaluated. The mechanism of dyes adsorption, regeneration potential of the employed bio-sorbents and their comparison with other commercial adsorbents are discussed. The cost comparison of different adsorbents and key technological challenges are highlighted followed by the recommendations for future research.

Original languageEnglish
Article number115981
JournalJournal of Environmental Management
Volume321
DOIs
StatePublished - 1 Nov 2022

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Adsorption
  • Bio-sorbents
  • Dyes removal
  • Environmental remediation
  • Sustainable materials
  • Water treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

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