AI Article Synopsis
Article Abstract
The copper industry utilizes significant amounts of sulfuric acid in its processes, generating sulfate as waste. While sulfate-reducing bacteria can remove sulfate, it produces hydrogen sulfide (HS) as a byproduct. This study examined the capability of a consortium consisting of Sulfobacillus thermosulfidooxidans and Sulfobacillus acidophilus to partially oxidize HS to S° at a temperature of 45 °C. A fixed-bed bioreactor, with glass rings as support material and sodium thiosulfate as a model electron donor, was inoculated with the consortium. Formation of biofilms was crucial to maintain the bioreactor's steady state, despite high flow rates. Afterward, the electron donor was changed to HS. When the bioreactor was operated continuously and with high aeration, HS was fully oxidized to SO. However, under conditions of low aeration and at a concentration of 0.26 g/L of HS, the consortium was able to oxidize HS to S° with a 13% yield. S° was discovered attached to the glass rings and jarosite. The results indicate that the consortium could oxidize HS to S° with a 13% yield under low aeration and at a concentration of 0.26 g/L of HS. The findings highlight the capability of a Sulfobacillus consortium to convert HS into S°, providing a potential solution for addressing environmental and safety issues associated with sulfate waste generated by the mining industry.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s10532-023-10049-y | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Adjacent-ligand Tuning of Atomically Precise Cu-Pd Sites Enables Efficient Methanol Electrooxidation with a CO-free Pathway.
Angew Chem Int Ed Engl
December 2024
Capital Normal University, Department of Chemistry, No. 105 Xisan Huan Bei Road, Haidian Dist. Beijing, CHINA.
Whether the catalyst can realize the non-CO pathway is the key to greatly improve the catalytic activity and stability of methanol oxidation reaction (MOR). It is feasible to optimize the reaction path selectivity by modifying organic ligands and constructing single-atom systems. At the same time, heterogeneous metal nanosheets with atomic thickness have been shown to significantly enhance the catalytic activity of materials due to their ultra-high exposure of active sites and synergistic effects.
View Article and Find Full Text PDFMg²⁺ and magnesium ammonium phosphate (MAP)-induced anammox granulation for comparable nitrogen removal: Implementation pathways and microbial mechanisms.
Water Res
December 2024
CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China. Electronic address:
Article Synopsis
- The anammox process is an efficient method for removing nitrogen from wastewater, but its application is limited due to slow bacteria growth and sludge flotation.
- This study explored two methods—Mg adsorption and magnesium ammonium phosphate (MAP) precipitation—to enhance anammox bacteria granulation, with Mg boosting specific anammox activity significantly more than MAP.
- While both methods showed similar nitrogen removal efficiency, MAP helped reduce sludge flotation, making it an effective option for practical applications despite some drawbacks in bacteria performance.
Advances in simulating dilute alloy nanoparticles for catalysis.
Nanoscale
December 2024
Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, USA.
Dilute alloy (DA) catalysts, including single-atom alloys (SAAs), which are comprised of trace amounts of an active promoter metal dispersed on the surface of a selective host metal, offer exceptional activity and selectivity while utilizing precious metals more efficiently. Although most SAA and DA applications have focused on partial hydrogenation and oxidation reactions, their use has steadily expanded into more complex thermo-, photo-, and electro-catalytic processes. This progress has been largely driven by mechanistic insights derived from computational chemistry and is expected to accelerate with the advancement of artificial intelligence.
View Article and Find Full Text PDFInterspecific competition and adaptation of anammox bacteria at different salinities: Experimental validation of the Monod growth model with salinity inhibition.
Water Res
November 2024
Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Sapporo, Hokkaido, 060-8628, Japan.
Ecological niche segregation of anaerobic ammonium oxidizing (anammox) bacteria under saline environments remains unresolved despite its ecological and practical importance. In this study, niche segregation by salinity for Ca. Brocadia sinica, Ca.
View Article and Find Full Text PDFDiversity and dynamic response of anaerobic ammonia oxidation granular sludge.
J Environ Sci (China)
June 2025
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
Red anaerobic ammonia oxidation (Anammox) granular sludge (AnGS) has been reported in successfully operating Anammox systems, and its color is associated with sludge activity. However, in long-term operating systems, AnGS exhibits different sensory colors, physical structures, community structures, and denitrification performance, but the relationship between them has not yet been elucidated. The AnGS of the Anammox system, which has been in operation for more than a decade, can be divided into two main categories: red and white.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!