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<p>As emphasized in the UN Sustainable Development Goal 6, ensuring the availability and sustainable management of water is critical and has been a key focus in the national goals of many countries. Nevertheless, access to safe and clean water remains a significant obstacle, especially with the growth of human population and industrialization. Textile dyeing is recognized as the second-largest contributor to water pollution, with a record of 280,000 tonnes of dyes discharged into aquatic environments annually. In this review article, we revisit the pressing issues surrounding dye-polluted water, its associated toxicity, and regulatory guidelines set for the maximum amount of dyes that can be discharged in effluents. We highlight global news reports on local water pollution caused by dye contamination across different countries and emphasize the preference for adsorption as an immediate and practical solution to such real-world challenges. In addition, we explore the increasing use of chitosan-based adsorbents over the past three decades as a practical solution for dye removal from polluted water. Reported studies indicate that the adsorption capacities of chitosan-based adsorbents may range from ~ 10 to 7000&#xa0;mg g⁻¹, depending on adsorbent modification, dye characteristics, and operating conditions. In terms of publication trends, a total of 31,246 scholarly works and 5 patents were recorded in the ScienceDirect and Lens.org databases, respectively, under the keywords “dye AND adsorption AND chitosan”. It is envisaged that this review will serve as a state-of-the-art reference guide for future research, development, and innovation in water reclamation using chitosan as a green adsorbent.</p>

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Mitigating Dyeing Industry Water Pollution Through Advances in Chitosan-Based Adsorbents

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Swee Pin Yeap,
  • Yvonne Ang,
  • Shuen Lam,
  • Swee Sen Teo,
  • Lai Huat Lim,
  • Li Sze Lai,
  • Hui Suan Ng,
  • Zeinab Abbas Jawad,
  • Kah Hon Leong,
  • Zaher Mundher Yaseen

摘要

As emphasized in the UN Sustainable Development Goal 6, ensuring the availability and sustainable management of water is critical and has been a key focus in the national goals of many countries. Nevertheless, access to safe and clean water remains a significant obstacle, especially with the growth of human population and industrialization. Textile dyeing is recognized as the second-largest contributor to water pollution, with a record of 280,000 tonnes of dyes discharged into aquatic environments annually. In this review article, we revisit the pressing issues surrounding dye-polluted water, its associated toxicity, and regulatory guidelines set for the maximum amount of dyes that can be discharged in effluents. We highlight global news reports on local water pollution caused by dye contamination across different countries and emphasize the preference for adsorption as an immediate and practical solution to such real-world challenges. In addition, we explore the increasing use of chitosan-based adsorbents over the past three decades as a practical solution for dye removal from polluted water. Reported studies indicate that the adsorption capacities of chitosan-based adsorbents may range from ~ 10 to 7000 mg g⁻¹, depending on adsorbent modification, dye characteristics, and operating conditions. In terms of publication trends, a total of 31,246 scholarly works and 5 patents were recorded in the ScienceDirect and Lens.org databases, respectively, under the keywords “dye AND adsorption AND chitosan”. It is envisaged that this review will serve as a state-of-the-art reference guide for future research, development, and innovation in water reclamation using chitosan as a green adsorbent.