A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Arsenic Removal From Acid Mine Drainage Using Acid‐Tolerant Bacteria
Acid mine drainage (AMD) has a low pH and contains harmful metals, making it a severe problem in the mining industry. Neutralization treatment using slaked lime is widely applied to remove potentially toxic metals and adjust the pH. However, this generates neutralized sludge containing large amounts of harmful metals. Therefore, in this study, we propose a bacterial bioprocess for removing metals before neutralization. Acid‐ and metal‐tolerant bacteria were isolated from neutral soils and utilized as As removers from AMD. The Paenathrobacter sp. strain H1 removed As (43.6%) and Fe (10.6%) from AMD in a single‐batch test (pH 1.95; initial concentrations were 6.13 and 283 mg L−1, respectively). Repeated batch tests using fresh cells enhanced the As removal ratio, achieving successful removal of As (95.3%) and Fe (75.5%). Although further research is required, this study has substantial implications for the development of a sustainable AMD treatment to suppress harmful waste generation.
Arsenic Removal From Acid Mine Drainage Using Acid‐Tolerant Bacteria
Acid mine drainage (AMD) has a low pH and contains harmful metals, making it a severe problem in the mining industry. Neutralization treatment using slaked lime is widely applied to remove potentially toxic metals and adjust the pH. However, this generates neutralized sludge containing large amounts of harmful metals. Therefore, in this study, we propose a bacterial bioprocess for removing metals before neutralization. Acid‐ and metal‐tolerant bacteria were isolated from neutral soils and utilized as As removers from AMD. The Paenathrobacter sp. strain H1 removed As (43.6%) and Fe (10.6%) from AMD in a single‐batch test (pH 1.95; initial concentrations were 6.13 and 283 mg L−1, respectively). Repeated batch tests using fresh cells enhanced the As removal ratio, achieving successful removal of As (95.3%) and Fe (75.5%). Although further research is required, this study has substantial implications for the development of a sustainable AMD treatment to suppress harmful waste generation.
Arsenic Removal From Acid Mine Drainage Using Acid‐Tolerant Bacteria
Iwama, Sohei (author) / Takano, Chikara (author) / Nakashima, Kazunori (author) / Aoyagi, Hideki (author) / Kawasaki, Satoru (author)
2025-01-01
7 pages
Article (Journal)
Electronic Resource
English
Potential Use of Precipitates from Acid Mine Drainage (AMD) as Arsenic Adsorbents
| DOAJ | 2023
Removal of Heavy Metals from Acid Mine Drainage using AFMR Process
| British Library Online Contents | 2000
Fundamental Study on the Removal of Mn^2^+ in Acid Mine Drainage using Sulfate Reducing Bacteria
| British Library Online Contents | 2004