Molybdate to prevent the formation of sulfide during the process of biogas production
Tenti, P.; Roman, S.; Storelli, N.
Show abstract
The process of anaerobic digestion producing biogas is an eco-friendly energy source that promotes recycling from waste biomass such as food chain residues, wet waste, wastewater. In this study, we focused on the problem of the sulfide (H2S) produced by the sulfate-reducing bacteria (SRB) in the presence of sulfate residues. This byproduct is dangerous for human health and an issue due to the highly corrosive effect on metallic components. To this purpose, the Molybdate, a sulfate analog, known in the literature to inhibit SRBs by blocking the first enzyme of the metabolic pathway of anaerobic respiration, was applied. The experiments carried out showed that a concentration of 0.3 mM of molybdate was enough to inhibit the SRB in a complex environment of the anaerobically digested sludge (ADS) took from a real biogas producing bioreactor. During the study, we observed the importance of the sulfate concentration sulfate in the system. Indeed, the production of sulfide was stopped only under the threshold ratio value of 1:10 (molybdate: sulfate). In the short term, the addition of molybdate did not alter the production and quality (% of methane) of the biogas, nor the anaerobic microbial community, including SRB population itself.
Matching journals
The top 9 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Operational and biochemical aspects of co-digestion (co-AD) from sugarcane vinasse, filter cake and deacetylation liquor 98%
- The feedstock microbiome selectively steers process stability during the anaerobic digestion of waste activated sludge 97%
- Co-utilization of microalgae and heterotrophic microorganisms improves wastewater treatment efficiency 96%
Similar papers in this journal
Similar papers in this journal
- Denitrification kinetics indicates nitrous oxide uptake is unaffected by electron competition in Accumulibacter 97%
- Temporal Dynamics of Microbial Communities in Anaerobic Digestion: Influence of Temperature and Feedstock Composition on Reactor Performance and Stability. 97%
- A novel method to isolate free-floating extracellular DNA from wastewater for quantitation and metagenomic profiling of mobile genetic elements and antibiotic resistance genes 97%
Similar papers in this journal
- Enhanced Resistance and Resilience of Anaerobic Digestion Microbiome after Single and Dual Short-Term Disturbances 96%
- Sustained organic loading disturbance favors nitrite accumulation in bioreactors with variable resistance, recovery and resilience of nitrification and nitrifiers 96%
- Microbiome dysbiosis regulates the level of energy production under anaerobic condition 96%
Similar papers in this journal
- Isolation, identification and selection of bacteria with the proof-of-concept for bioaugmentation of whitewater from woodfree paper mills 95%
- SARS-CoV-2 virus in Raw Wastewater from Student Residence Halls with concomitant 16S rRNA Bacterial Community Structure changes 95%
- Development of Moore Swab and Ultrafiltration Concentration and Detection Methods for Salmonella Typhi and Salmonella Paratyphi A in Wastewater and Application in Kolkata, India and Dhaka, Bangladesh 95%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.