Your browser doesn't support javascript.
loading
A novelty strategy for AMD prevention by biogas slurry: Acetate acid inhibition effect on chalcopyrite biooxidation and leachate.
Li, Xin; Yuan, Shi-Jie; Ren, Fei-Fan; Dong, Bin; Xu, Zu-Xin.
Afiliación
  • Li X; School of Environmental Science and Engineering. Tongji University, Shanghai, 200092, PR China.
  • Yuan SJ; School of Environmental Science and Engineering. Tongji University, Shanghai, 200092, PR China.
  • Ren FF; Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, 200092, PR China.
  • Dong B; School of Environmental Science and Engineering. Tongji University, Shanghai, 200092, PR China; YANGTZE Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing, 100038, PR China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin Univ
  • Xu ZX; School of Environmental Science and Engineering. Tongji University, Shanghai, 200092, PR China.
Environ Res ; 261: 119687, 2024 Nov 15.
Article en En | MEDLINE | ID: mdl-39068972
ABSTRACT
With the widespread application of anaerobic digestion technology, biogas slurry become the main source of organic amendments in practice. Comprehensive studies into the inhibitory effects of low molecular weight (LMW) organic acids, essential components in biogas slurry, on the sulfide minerals biooxidation and its bioleaching (AMD) have been lacking. In this study, acetic acid (AA) served as a representative of LMW organic acids in biogas slurry to investigate its impact on the inhibition of chalcopyrite biooxidation by Acidithiobacillus ferrooxidans (A. ferrooxidans). It was shown that AA could slow down the chalcopyrite biooxidation and inhibit the jarosite formation on the mineral surface. Compared with the control group (0 ppm AA), the sulfate increment in the leachate of the 50 ppm, 100 ppm, and 200 ppm AA-treated groups decreased by 36.4%, 66.8%, and 69.0%, respectively. AA treatment (≥50 ppm) could reduce the oxidation of ferrous ions in the leachate by one order of magnitude. At the same time, the bacterial concentration of the leachate in the 50 ppm, 100 ppm, and 200 ppm AA-treated groups decreased by 70%, 93%, and 94%, respectively. These findings provide a scientific basis for new strategies to utilize biogas slurry for mine remediation and contribute to an enhanced comprehension of organic amendments to prevent AMD in situ in mining soil remediation.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxidación-Reducción / Biocombustibles Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxidación-Reducción / Biocombustibles Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos