The influence of ultrasonication on hydrolysis, acidogenesis, and methanogenesis in anaerobic decomposition of sludge was investigated. The sonicated sludge exhibited prehydrolysis and preacidogenesis effects in the anaerobic decomposition process. First-order hydrolysis rates increased from 0.0384 day(-1) in the control digester to 0.0672 day(-1) in the digester fed, with sludge sonicated at 0.52 W/mL. The sonication appeared to be ineffective in relation to acidogenesis reaction rates, but it provided a better buffering capacity to diminish the adverse effect of acidification. Digesters fed with sonicated sludge demonstrated enhanced methanogenesis over the control unit. Determination by coenzyme F420 verified that sonication is able to promote the growth of methanogenic biomass and facilitate a positive methanogenic microbial development in suppressing the initial methanogenesis limitation. The results suggest that ultrasonication could enhance anaerobic decomposition of sludge, resulting in an accelerated bioconversion, improved organics degradation, improved biogas production, and increased methane content.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2175/106143006x123049 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Strong legacies of emerging trends in winter precipitation on the carbon-climate feedback from Arctic tundra.
Sci Total Environ
January 2025
Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA.
Changes in winter precipitation accompanying emerging climate trends lead to a major carbon-climate feedback from Arctic tundra. However, the mechanisms driving the direction, magnitude, and form (CO and CH) of C fluxes and derived climate forcing (i.e.
View Article and Find Full Text PDFKey bacteria decomposing animal and plant detritus in deep sea revealed via long-term incubation in different oceanic areas.
ISME Commun
January 2024
Key Laboratory of Marine Genetic Resources, Ministry of Natural Resources of PR China, 178 Daxue Road, Siming District, Xiamen City, Fujian Province 361005, PR China.
Transport of organic matter (OM) occurs widely in the form of animal and plant detritus in global oceans, playing a crucial role in global carbon cycling. While wood- and whale-falls have been extensively studied, the process of OM remineralization by microorganisms remains poorly understood particularly in pelagic regions on a global scale. Here, enrichment experiments with animal tissue or plant detritus were carried out in three deep seas for 4-12 months using the deep-sea incubators.
View Article and Find Full Text PDFStatistical Methods in the Analysis of the Effect of Carbonisate on the Hardness of Epoxy-Resin-Based Composites.
Materials (Basel)
December 2024
Faculty of Marine Engineering, Gdynia Maritime University, Morska St. 81-87, 81-225 Gdynia, Poland.
This research concerns the manufacture and characterisation of epoxy composites with the addition of carbonisate, obtained by the pyrolysis of MDF (medium-density fibreboard) furniture board waste. The laminated composites were made by hand lamination, with the carbonisate used as a filler to improve the mechanical properties of the composite. The carbonisate was obtained by the thermal decomposition of MDF waste in an anaerobic environment by pyrolysis, which is an efficient method of waste management and material recycling.
View Article and Find Full Text PDFPotential substrates for biogas production through anaerobic digestion-an alternative energy source.
Heliyon
December 2024
University of Dar Es Salaam, Mkwawa University College of Education, Department of Chemistry, P.O. Box 2513, Iringa, Tanzania.
Energy is a crucial part of a comprehensive desire to reach any country's long-term economic and social development. Fossil fuels have for a long time been used as the major global cause of energy. However, dependence on fossil fuels contributes to environmental damage.
View Article and Find Full Text PDFSteam explosion pretreatment of separated dairy cattle manure: Mass balances and effect on biomethane potential.
Waste Manag
December 2024
Bern University of Applied Sciences, School of Agricultural, Forest and Food Sciences, Länggasse 85 3052, Zollikofen, Switzerland. Electronic address:
Manure is a renewable feedstock, whose theoretical potential for biogas production is scarcely deployed due to modest methane yields that prevent economic feasible operation of anaerobic digestion plants. Steam explosion pretreatment has the potential to improve the digestibility of manure, however it is energy intensive, and the optimal conditions depend on the feedstock. In this work, the solid and the liquid fraction of separated dairy cattle manure were pretreated between 130 and 210 °C for 5 to 40 min by steam explosion to individually determine the optimal conditions for each fraction.
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!