Results 171 to 180 of about 2,547 (199)

Removal of hydrogen sulfide by sulfate-resistant Acidithiobacillus thiooxidans AZ11

Journal of Bioscience and Bioengineering, 2006
Toxic H2S gas is an important industrial pollutant that is applied to biofiltration. Here, we examined the effects of factors such as inlet concentration and space velocity on the removal efficiency of a bacterial strain capable of tolerating high sulfate concentrations and low pH conditions.
Eun Young, Lee, Nae Yoon, Lee, Kyung-Suk, Cho, Hee Wook, Ryu   +3 more
openaire   +2 more sources

Purification and Properties of Thiosulfate Dehydrogenase from Acidithiobacillus thiooxidans JCM7814

Bioscience, Biotechnology, and Biochemistry, 2001
A key enzyme of the thiosulfate oxidation pathway in Acidithiobacillus thiooxidans JCM7814 was investigated. As a result of assaying the enzymatic activities of thiosulfate dehydrogenase, rhodanese, and thiosulfate reductase at 5.5 of intracellular pH, the activity of thiosulfate dehydrogenase was measured as the key enzyme.
K, Nakamura, M, Nakamura, H, Yoshikawa, Y, Amano   +3 more
openaire   +2 more sources

Biomachining rates of various metals by Acidithiobacillus thiooxidans

International Journal of Surface Science and Engineering, 2012
The evaluation of a potential of a microorganism for the biomachining technology is conducted in the current study. As the fundamental step, the specific metal removal rates (SMRR) of copper, nickel and aluminium in use of different level of cell concentration of Acidithiobacillus thiooxidans (At.
Hong Hocheng, U.U. Jadhav, J.H. Chang
openaire   +1 more source

Monitoring Acidithiobacillus Thiooxidans Biofilm Formation on Graphite Surface

ECS Meeting Abstracts, 2018
Biofilm formation has been studied to understand modifications in electrode interface to create new monitoring devices related with different fields as medical, environmental and industrial. In biomining industry, specifically in bioleaching processes, Acidithiobacillus thiooxidans is an acidophilic bacterium that enhances ...
Marcela Méndez-Tovar, J Viridiana García-Meza, I González   +2 more
openaire   +1 more source

Biofiltration of H2S-rich biogas using Acidithiobacillus thiooxidans

Clean Technologies and Environmental Policy, 2015
Biogas has limited use in energy generation mainly due to the presence of hydrogen sulfide (H2S). Currently, most of the techniques employed in the removal of H2S from biogas have a chemical base, with high material costs and generating secondary pollutants.
Bruno Carlesso Aita, Flávio Dias Mayer, Diana Tomazi Muratt, Michel Brondani, Stefen Barbosa Pujol, Laura Bedin Denardi, Ronaldo Hoffmann, Djalma Dias da Silveira   +7 more
openaire   +1 more source

Bioleaching of chromium from tannery sludge by indigenous Acidithiobacillus thiooxidans

Journal of Hazardous Materials, 2007
Chromium in tannery sludge will cause serious environmental problems and is toxic to organisms. The acidophilic sulfur-oxidizing Acidithiobacillus thiooxidans can leach heavy metals form urban and industrial wastes. This study examined the ability of an indigenous sulfur-oxidizing A. thiooxidans to leach chromium from tannery sludge. The results showed
Yuan-Shan, Wang, Zhi-Yan, Pan, Jian-Min, Lang, Jian-Miao, Xu, Yu-Guo, Zheng   +4 more
openaire   +2 more sources

Bioleaching of metals from steel slag by Acidithiobacillus thiooxidans culture supernatant

Chemosphere, 2014
The generation of 300–500 kg of slag per ton of the steel produced is a formidable amount of solid waste available for treatment. They usually contain considerable quantities of valuable metals. In this sense, they may become either important secondary resource if processed in eco-friendly manner for secured supply of contained metals or potential ...
Hong, Hocheng, Cheer, Su, Umesh U, Jadhav   +2 more
openaire   +2 more sources

Bioleaching of arsenic from highly contaminated mine tailings using Acidithiobacillus thiooxidans

Journal of Environmental Management, 2015
The behavior of arsenic (As) bioleaching from mine tailings containing high amount of As (ca. 34,000 mg/kg) was investigated using Acidithiobacillus thiooxidans to get an insight on the optimal conditions that would be applied to practical heap and/or tank bioleaching tests. Initial pH (1.8-2.2), temperature (25-40 °C), and solid concentration (0.5-4.0%
Eunseong Lee, Yosep Han, Jeonghyun Park, Jeongsik Hong, Rene A. Silva, Seungkon Kim, Hyunjung Kim   +6 more
openaire   +2 more sources

Solubilization of a K-silicate rock by Acidithiobacillus thiooxidans

Minerals Engineering, 2019
Abstract Sulfur-oxidizing bacteria are used in bioleaching processes to recover metals such as gold and copper. The mechanisms for solubilizing metals used by the bacterium Acidithiobacillus thiooxidans involve sulfur oxidation reactions, with the consequent formation of acid.
Patrícia Cardoso Matias, Edson Marcio Mattiello, Wedisson Oliveira Santos, Jorge Luis Badel, Víctor Hugo Alvarez V.   +4 more
openaire   +1 more source

Treatment for woolscouring effluent through bioacidification by acidithiobacillus thiooxidans

International Journal of Environment and Pollution, 2010
In this study, a promising process called bioacidification was used to remove organic pollutant from Woolscouring Effluent (WSE) by emulsion destabilisation. Chemostat experiments of bioacidification treatment inoculated with Acidithiobacillus thiooxidans were operated at high wastewater recycle ratios to achieve shorter Hydraulic Retention Time (HRT).
Feng He, Lixiang Zhou
openaire   +1 more source