Little attention has been paid to the in situ-generated biogenic manganese oxides (BMnOx) for practical implementation in continuous groundwater remediation systems. The enrichment effects of manganese oxidizing bacteria (MOB) in bioaugmentation columns and the in situ-generated BMnOx for continuous thallium(I) (Tl(I)) removal from groundwater were investigated. Results indicated that Pseudomonas Putida MnB1 (strain MnB1) attached on the groundwater sediments (GS) can achieve a maximum of 97.37 % Mn(II) oxidation and generate 29.6 mg/L BMnOx, which was superior than that of traditional quartz sand (QS). The in situ-generated BMnOx in MOB_GS column effectively removed 10-100 μg/L Tl(I) under the interference of high concentrations of Fe(II) and Mn(II) in groundwater. Distinctive microbial enrichment effects occurred in the bioaugmentation columns under the competition of indigenous microbes in groundwater. The release of Mn(II) from the BMnOx inhibited with the decrease in Tl(I) removal efficiency. XAFS analysis revealed Tl(I) was effectively adsorbed by BMnOx and Mn-O octahedra with Tl-O tetrahedral coordination existed in BMnOx. This study provides an in-depth understanding of the in situ-generated BMnOx for the Tl(I) removal and contributes to the application of BMnOx in groundwater remediation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jhazmat.2023.131225 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhanced retention of hydrophobic pesticides in subsurface soils using organic amendments.
J Hazard Mater
December 2024
University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental protection, Trg Dositeja Obradovića 3, 21000 Novi Sad, Republic of Serbia. Electronic address:
The rapid global population growth since the early 2000s has significantly increased the demand for agricultural products, leading to widespread pesticide use, particularly organophosphorus pesticides (OPPs). This extensive application poses severe environmental risks by contaminating air, soil, and water resources. To protect groundwater quality, it is crucial to understand the transport and fate of these pesticides in soil and sediment.
View Article and Find Full Text PDFBioremediation of rapid sand filters for removal of organic micropollutants during drinking water production.
Water Res
February 2024
KWR Water Research Institute, Groningenhaven 7, 3433 PE Nieuwegein, the Netherlands.
Rapid sand filtration (RSF) is used during drinking water production for removal of particles, possible harmful microorganisms, organic material and inorganic compounds such as iron, manganese, ammonium and methane. However, RSF can also be used for removal of certain organic micropollutants (OMPs). In this study, it was investigated if OMP removal in columns packed with sand from full scale RSFs could be stimulated by bioaugmentation (i.
View Article and Find Full Text PDFElectrochemical biostimulation of aerobic metabolic TCE degradation in a bioaugmentation approach.
Environ Sci Pollut Res Int
October 2023
TZW:DVGW Technologiezentrum Wasser, Department Water Microbiology, Karlsruher Straße 84, 76139, Karlsruhe, Germany.
Chloroethenes are globally prevalent groundwater contaminants. Since 2014, TCE has been shown to be degradable in an aerobic metabolic process where it is used as sole energy source and growth substrate by a mixed bacteria culture (SF culture). In 2019, the SF culture was shown to be successfully used in bioaugmentation approaches under field-relevant conditions.
View Article and Find Full Text PDFBioaugmentation has temporary effect on anaerobic pesticide biodegradation in simulated groundwater systems.
Biodegradation
June 2024
Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 EV, Wageningen, The Netherlands.
Groundwater is the most important source for drinking water in The Netherlands. Groundwater quality is threatened by the presence of pesticides, and biodegradation is a natural process that can contribute to pesticide removal. Groundwater conditions are oligotrophic and thus biodegradation can be limited by the presence and development of microbial communities capable of biodegrading pesticides.
View Article and Find Full Text PDFGenome-resolved analyses of oligotrophic groundwater microbial communities along phenol pollution in a continuous-flow biodegradation model system.
Front Microbiol
March 2023
Microbiology and Biotechnology Group, Environment and Biotechnology Research Division, Research Institute of Petroleum Industry, Tehran, Iran.
Article Synopsis
- * This study explored the effectiveness of Small Bioreactor Chambers and CaO nanoparticles for phenol removal in sand-packed columns, revealing that combining biostimulation and bioaugmentation eliminated phenol in just 42 days.
- * The microbial diversity was impacted by CaO, leading to shifts in the community composition, with certain groups increasing in abundance that are better at degrading phenol and other hydrocarbons after 6 months.
Want 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!