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Efficient Degradation of Rhodamine B Dye through Hand Warmer Heterogeneous Activation of Persulfate

Author

Listed:
  • Tiantian Ye

    (South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China)

  • Lihong Liu

    (South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China)

  • Yilin Wang

    (South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China)

  • Jianqiang Zhang

    (South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China)

  • Zhenxing Wang

    (South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China)

  • Cong Li

    (South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, China)

  • Haoyu Luo

    (Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China)

Abstract

In this study, an innovative method for RhB (Rhodamine B) degradation in a persulfate (PS) and hand warmer heterogeneous activation system was investigated. The hand warmer showed better catalytic performance and excellent reusability in terms of PS activation. The reaction rate constants of RhB removal in the hand warmer/PS process (0.354 min −1 ) were much faster than those in other PS- and Fe-related processes (0.010–0.233 min −1 ) at pH 7. The iron in the hand warmer is the main active ingredient to catalyze PS, and activated carbon, salt, and H + /OH − accelerate the activated reaction due to the formation of micro-batteries in the solution. Moreover, the catalyst of the hand warmer showed excellent stability and reusability with a low level of iron leaching. This new, effective, inexpensive, repeatable, and environmentally friendly catalyst combined with PS has promising prospects for the removal of dyes from industrial wastewater.

Suggested Citation

  • Tiantian Ye & Lihong Liu & Yilin Wang & Jianqiang Zhang & Zhenxing Wang & Cong Li & Haoyu Luo, 2023. "Efficient Degradation of Rhodamine B Dye through Hand Warmer Heterogeneous Activation of Persulfate," Sustainability, MDPI, vol. 15(17), pages 1-17, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:13034-:d:1228318
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