SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 62 ›› Issue (10): 150-158.DOI: 10.1016/j.cjche.2023.04.010

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Vanadium(V) reduction by using a by-product of the yellow phosphorus industry

Baibin Yang1, Shihong Chen1, Haowen Ren1, Yang Qiu1, Chong Chen1, Yong Guo1, Chunhui Luo1, Qiang Zhao1, Wei Yang2   

  1. 1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China
  • Received:2022-12-21 Revised:2023-04-05 Online:2023-12-23 Published:2023-10-28
  • Contact: Qiang Zhao,E-mail:scuzq@scu.edu.cn;Wei Yang,E-mail:wei_yang@scu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation for Young Scientists of China (22108185, 51906168, 52276208).

Vanadium(V) reduction by using a by-product of the yellow phosphorus industry

Baibin Yang1, Shihong Chen1, Haowen Ren1, Yang Qiu1, Chong Chen1, Yong Guo1, Chunhui Luo1, Qiang Zhao1, Wei Yang2   

  1. 1. School of Chemical Engineering, Sichuan University, Chengdu 610065, China;
    2. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China
  • 通讯作者: Qiang Zhao,E-mail:scuzq@scu.edu.cn;Wei Yang,E-mail:wei_yang@scu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation for Young Scientists of China (22108185, 51906168, 52276208).

Abstract: Release of vanadium(V) from industry has threatened the environment and human health. In this paper, a removal method of vanadium(V) is proposed using a by-product of the yellow phosphorus industry (phosphorus-iron) as a reducing agent. The thermodynamics analysis shows that the Gibbs free energy is always negative from 0 to 100 ℃, indicating a spontaneous process. Effect of the phosphorus-iron slag/sulfuric acid dosage and temperature on the removal efficiency is comprehensively studied, and the kinetics parameters are calculated based on a quasi-first order reaction kinetics model. Results indicate that vanadium(V) can be entirely reduced by using phosphorus-iron slag, the frequency factor and apparent activation energy are 3.23×109 min-1 and 64.50 kJ·mol-1 for vanadium(V) reduction. Based on above results, a lab-scale reactor is constructed and achieves a removal efficiency of ~100% and a treatment capacity of 200 ml vanadium(V) solution (2 g·L–1) within 3 h. This work demonstrates the feasibility of vanadium(V) reduction using phosphorus-iron slag as a reducing agent in applications.

Key words: Vanadium, Phosphorus-iron slag, Thermodynamics, Kinetics, Reduction

摘要: Release of vanadium(V) from industry has threatened the environment and human health. In this paper, a removal method of vanadium(V) is proposed using a by-product of the yellow phosphorus industry (phosphorus-iron) as a reducing agent. The thermodynamics analysis shows that the Gibbs free energy is always negative from 0 to 100 ℃, indicating a spontaneous process. Effect of the phosphorus-iron slag/sulfuric acid dosage and temperature on the removal efficiency is comprehensively studied, and the kinetics parameters are calculated based on a quasi-first order reaction kinetics model. Results indicate that vanadium(V) can be entirely reduced by using phosphorus-iron slag, the frequency factor and apparent activation energy are 3.23×109 min-1 and 64.50 kJ·mol-1 for vanadium(V) reduction. Based on above results, a lab-scale reactor is constructed and achieves a removal efficiency of ~100% and a treatment capacity of 200 ml vanadium(V) solution (2 g·L–1) within 3 h. This work demonstrates the feasibility of vanadium(V) reduction using phosphorus-iron slag as a reducing agent in applications.

关键词: Vanadium, Phosphorus-iron slag, Thermodynamics, Kinetics, Reduction