By the methods of light microscopy and immunocytochemistry studies of interaction between S. typhimurium and corpuscular biliary components was investigated in experimental model "bile-bacteria" It was shown that the results of this interaction was bacterial-biliary sludge formation. Bacterial extracellular mucopolysaccharides matrix and flagella's play crucial role in mechanism of sludge formation.
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Microbes Environ
January 2024
Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST).
Myxobacteria, belonging to the phylum Myxococcota, are ubiquitous in soil, marine, and other environments. A recent metagenomic sequencing ana-lysis showed that Myxococcota are predominant in activated sludge systems; however, their metabolic traits remain unclear. In the present study, we exami-ned the potential biological functions of 46 metagenomic bins of Myxococcota reconstructed from activated sludge samples from four municipal sewage treatment plants.
View Article and Find Full Text PDFChemosphere
January 2025
Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions, Guangxi Normal University, 15 Yucai Road, Guilin, 541004, PR China; Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, 15 Yucai Road, Guilin, 541004, PR China. Electronic address:
Garlic and chili are widely used as food flavoring agents in food cooking, therefore might be accumulated in large amounts in food waste (FW). The effects of garlic and chili on the dissolution, hydrolysis, acidification and methanation in an anaerobic co-digestion system were investigated during the combined co-digestion of FW and excess sludge (ES). Additionally, the transformation of phosphorus form and microbial metabolism changes during the process were analyzed.
View Article and Find Full Text PDFJ Environ Manage
December 2024
Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy.
This study evaluates the combined use of H₂O₂ and thermally activated S₂O₈⁻ (T-PDS) for the degradation of phenolic compounds (PhOH) in wastewater, aiming to limit or eliminate sludge production. Phenolic compounds are common in industrial effluents, and their effective removal is crucial for reducing environmental impact. The study employs Response Surface Methodology (RSM) and Principal Component Analysis (PCA) to optimise critical variables such as temperature, pH, and oxidant concentrations.
View Article and Find Full Text PDFPLoS One
December 2024
School of Design, Informatics and Business, Abertay University, Dundee, United Kingdom.
The reuse of electro-coagulated sludge as an adsorbent for Cr(VI) ion reduction was investigated in this study. Electro-coagulated sludge was obtained during the removal of citric acid wastewater by the electrocoagulation process. The following parameters were optimized for Cr(VI) reduction: pH (5-7), initial Cr(VI) concentration (10-50 mg/L), contact time (10-45 min), and adsorbent dosage (0.
View Article and Find Full Text PDFSci Rep
December 2024
Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.
Biochemical methane potential tests using water hyacinth (WH), pretreated water hyacinth (PWH), and Hydrilla verticillata (HV) as substrates using sewage media were explored. This study replaced the freshwater required to prepare the slurry for AD of organic solid waste with domestic sewage. Cow dung was used as the inoculum.
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