Congratulations to graduate student Zan Jinyu for his paper published in the journal ME: Improving the bioleaching efficiency of vanadium ore from stone coal by adding biochar and plasma treatment

Author:Zan Jinyu, Master's degree student

Instructor:Prof. Yingbo Dong

Correspondence unit:School of Energy and Environmental Engineering, University of Science and Technology Beijing

DOI:10.1016/j.mineng.2023.108059

✦Results Profile✦

Recently, Zan Jinyu, a graduate student in the group, published an article entitled "Enhanced bioleaching efficiency of vanadium from stone coal vanadium ore by adding biochar and plasma treatment". In this study, different enhanced bioleaching methods were used to investigate the effect and mechanism of single and combined enhanced treatment with the addition of biochar, plasma pretreatment and the addition of sodium dodecyl sulfate ( SDS ) on the leaching of vanadium from Bacillus gummi ( B. mucilaginosus ).

✦ Abstract✦

To address the general problem of low efficiency of vanadium bioleaching from rock coal, different enhanced bioleaching methods were used in this study. In the single enhanced treatment with the addition of biochar, plasma pretreatment and the addition of sodium dodecyl sulfate ( SDS ), the addition of 0.1 g biochar had a significant impact on the efficiency of Bacillus coli ( B. mucilaginosus ) had the best vanadium leaching effect, with a 9.8 % increase in vanadium leaching rate compared to the blank group, while a combination of plasma treatment of rock coal for 6 min and the addition of 0.1 g / L biochar to the bioleaching system further improved the vanadium leaching rate. At 20 d of bioleaching, the vanadium leaching rate increased by 21.7 % compared to the blank group. it was found that biochar could promote bacterial attachment and increase bacterial biomass through microbial immobilization. Fourier transform infrared spectroscopy ( FTIR ) results showed that plasma pretreatment could introduce oxygen-containing functional groups such as hydroxyl and carboxyl groups to modify the surface of stone coal, which reduced the contact angle of stone coal by 22.1 ° and improved its surface hydrophilicity and reaction.

✦ Author✦

Zan Jinyu is a graduate student of Environmental Engineering, Class of 2021, University of Science and Technology Beijing, with research interests in leaching heavy metals from tailings using microbial technology and its mechanism, participating in the project of investigating the environmental condition of groundwater in Dongying Chemical Park. This research was funded by the National Natural Science Foundation of China ( 51874018 ) and the Open Fund Project of State Key Laboratory of Mineral Processing ( BGRIMM - KJSKL - 2022 - 07 ), with special thanks! Once again, we congratulate Zan Jinyu, a master's student, and wish the graduate students in the group to innovate on their own, to make further efforts, to achieve fruitful results, and to run to a bright future together!

Source: Environmental Biotechnology and Environmental Materials Development Team Public