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Stable and recyclable straw cellulose-based anion exchanger for sustainable textile dyeing wastewater treatment

  • 0State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China.
International Journal of Biological Macromolecules +

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July 6, 2025

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July 6, 2025

View abstract on PubMed

Summary

This summary is machine-generated.

This study developed a straw cellulose-based anion exchanger (SCAE) from agricultural waste for effective water treatment. The novel material shows high adsorption capacity and recyclability for removing dyes from industrial wastewater.

Area Of Science

  • Materials Science
  • Environmental Science
  • Chemical Engineering

Background

  • Biomass-derived materials offer sustainable solutions for water treatment.
  • Raw crop straw has limitations like low adsorption capacity and organic leaching.
  • Developing efficient and recyclable adsorbents from agricultural waste is crucial for wastewater remediation.

Purpose Of The Study

  • To fabricate a straw cellulose-based anion exchanger (SCAE) with enhanced adsorption performance and recyclability.
  • To address the limitations of raw agricultural waste for water treatment applications.
  • To provide a sustainable and cost-effective solution for industrial dyeing wastewater.

Main Methods

  • Alkaline pretreatment and monochlorotriazine-mediated etherification of crop straw cellulose.
  • Modification with a di-tertiary amine-based cationic agent to increase functional group density.
  • Characterization of adsorption capacity, mass retention, and desorption efficiency.

Main Results

  • Optimized SCAE achieved a static adsorption capacity of 265 mg·g⁻¹ for simulated dye effluents.
  • SCAE demonstrated over 95.4% mass retention after 15 acid-base washing cycles.
  • 97.7% chroma reduction in actual printing and dyeing wastewater and 95.6% performance retention after five cycles in dynamic column tests.

Conclusions

  • The developed SCAE effectively removes dyes from industrial wastewater with high capacity and recyclability.
  • This approach valorizes agricultural waste into high-performance water treatment materials.
  • SCAE offers a closed-loop solution for sustainable industrial dyeing wastewater management.

Keywords:

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