Efficient reduction of vanadium (V) with biochar and experimental parameters optimized by response surface methodology

Hao Peng; Laixin Wang; Jing Guo; Yuting Wu; Bing Li; Yinhe Lin

doi:10.1038/s41598-024-58880-4

Efficient reduction of vanadium (V) with biochar and experimental parameters optimized by response surface methodology

Sci Rep. 2024 Apr 6;14(1):8118. doi: 10.1038/s41598-024-58880-4.

Authors

Hao Peng¹, Laixin Wang², Jing Guo³, Yuting Wu⁴, Bing Li⁴, Yinhe Lin⁴

Affiliations

¹ Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, People's Republic of China. cqupenghao@126.com.
² Intelligent Development Department, Huatian Engineering & Technology Corporation, MCC, Nanjing, Anhui, People's Republic of China.
³ College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 408100, People's Republic of China.
⁴ Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing, 408100, People's Republic of China.

PMID: 38582908
DOI: 10.1038/s41598-024-58880-4

Abstract

Water pollution deteriorates ecosystems and has a great threaten to the environment. The environmental benefits of wastewater treatment are extremely important to minimize pollutants. Here, the biochar purchased from the related industry was used to treat the wastewater which contained high concentration of vanadium (V). The concentration of vanadium was measured by the IC-OES and the results showed that 96.1% vanadium (V) was reduced at selected reaction conditions: the mass ratio of biochar to vanadium of 5.4, reaction temperature of 90 °C, reaction time at 60 min and concentration of H₂SO₄ of 10 g/L, respectively. Response surface methodology confirmed that all the experimental parameters had positive effect on the reduction of vanadium (V), which could improve the reduction efficiency of vanadium (V) as increased. The influence of each parameter on the reduction process followed the order: A (Concentration of H₂SO₄) > C (mass ratio of biochar to vanadium) > B (mass ratio of biochar to vanadium). Especially, the mass ratio of biochar to vanadium and concentration of H₂SO₄ had the greatest influence on the reduction process. This paper provides a versatile strategy for the treatment of wastewater containing vanadium (V) and shows a bright tomorrow for wastewater treatment.

Keywords: Biochar; Reduction; Response surface methodology; Thermodynamics; Vanadium.

Abstract

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