Anaerobic Co-digestion of Waste Activated Sludge with Municipal Solid Waste: Methane Production, Heavy Metal Decrease, Microbial Community, and Energy Production
This study investigates the potential of anaerobic digestion (AD) as an alternative method to improve the treatment performance of wastewater treatment plants (WWTPs) in the presence of inhibitors. This work will focus on studying the effect of the presence of certain heavy metals on the structure o...
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| creator | Ennouri, Hajer Manai, Imène Ennouri, Habiba Zahedi Diaz, Soraya Fernández Güelfo, Luis Alberto Solera, Rosario Hamdi, Moktar Bouallagui, Hassib |
| description | This study investigates the potential of anaerobic digestion (AD) as an alternative method to improve the treatment performance of wastewater treatment plants (WWTPs) in the presence of inhibitors. This work will focus on studying the effect of the presence of certain heavy metals on the structure of microbial community and biogas production pathways during anaerobic digestion between different substrates. Waste activated sludge (WAS) from both urban and industrial WWTPs was mixed with municipal solid waste (MSW) to investigate the effect on heavy metal concentrations, microbial population balance, biogas production, and energetic benefits following the stabilization of the process. The results showed that better performance was achieved with anaerobic co-digestion (AcoD) experiments. The highest biogas rates of 0.81 L/d and 0.7 L/d were obtained with AcoD of industrial sludge (IS) and urban sludge (US) with MSW, respectively. Microbial analysis using fluorescence in situ hybridization (FISH) was conducted to quantify the major Bacteria and Archaea groups. The Archaea content reached 72% and 68% for AcoD mixtures of IS/MSW and US/MSW, respectively. Therefore, the best performance was obtained with the IS/MSW mixture, which produced a net energy production of 33.4 kJ/d. Heavy metals appeared to have a stimulating effect on AcoD between WAS and MSW by enhancing microbial activity due to a larger contact area and, thus, a higher adsorption rate. |
| doi_str_mv | 10.1007/s11270-023-06471-w |
| format | Article |
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This work will focus on studying the effect of the presence of certain heavy metals on the structure of microbial community and biogas production pathways during anaerobic digestion between different substrates. Waste activated sludge (WAS) from both urban and industrial WWTPs was mixed with municipal solid waste (MSW) to investigate the effect on heavy metal concentrations, microbial population balance, biogas production, and energetic benefits following the stabilization of the process. The results showed that better performance was achieved with anaerobic co-digestion (AcoD) experiments. The highest biogas rates of 0.81 L/d and 0.7 L/d were obtained with AcoD of industrial sludge (IS) and urban sludge (US) with MSW, respectively. Microbial analysis using fluorescence in situ hybridization (FISH) was conducted to quantify the major Bacteria and Archaea groups. The Archaea content reached 72% and 68% for AcoD mixtures of IS/MSW and US/MSW, respectively. 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Heavy metals appeared to have a stimulating effect on AcoD between WAS and MSW by enhancing microbial activity due to a larger contact area and, thus, a higher adsorption rate.</description><subject>Activated sludge</subject><subject>adsorption</subject><subject>air</subject><subject>Anaerobic digestion</subject><subject>Anaerobic microorganisms</subject><subject>Anaerobic processes</subject><subject>Anaerobic treatment</subject><subject>Archaea</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Biogas</subject><subject>Biological activity</subject><subject>Climate Change/Climate Change Impacts</subject><subject>Digestion</subject><subject>Earth and Environmental Science</subject><subject>energy</subject><subject>Energy management systems</subject><subject>Environment</subject><subject>Environmental monitoring</subject><subject>fish</subject><subject>Fluorescence</subject><subject>Fluorescence in situ hybridization</subject><subject>gas 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| identifier | ISSN: 0049-6979 |
| ispartof | Water, air, and soil pollution, 2023-07, Vol.234 (7), p.440-440, Article 440 |
| issn | 0049-6979 1573-2932 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_3153181829 |
| source | Springer Nature - Complete Springer Journals |
| subjects | Activated sludge adsorption air Anaerobic digestion Anaerobic microorganisms Anaerobic processes Anaerobic treatment Archaea Atmospheric Protection/Air Quality Control/Air Pollution Biogas Biological activity Climate Change/Climate Change Impacts Digestion Earth and Environmental Science energy Energy management systems Environment Environmental monitoring fish Fluorescence Fluorescence in situ hybridization gas production (biological) Heavy metals Hybridization Hydrogeology Industrial wastes Metal concentrations Methane methane production Microbial activity microbial communities Microbiomes Microorganisms Mixtures Municipal solid waste Municipal waste management Production management Purification Sewage Sludge Sludge digestion soil Soil Science & Conservation Solid waste management Solid wastes Substrates Wastes Wastewater treatment Wastewater treatment plants water Water Quality/Water Pollution Yard waste |
| title | Anaerobic Co-digestion of Waste Activated Sludge with Municipal Solid Waste: Methane Production, Heavy Metal Decrease, Microbial Community, and Energy Production |
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