Topic
Biogas
About: Biogas is a research topic. Over the lifetime, 28571 publications have been published within this topic receiving 498545 citations.
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TL;DR: Fluorescence intensities from EEM-PARAFAC and main bands of FTIR spectra correlated significantly with other chemical parameters, e.g. biogas production and dissolved organic carbon content, supply novel realization for degradation degree and order of individual DOMs during anaerobic digestion for dewatered sewage sludge.
160 citations
TL;DR: Results showed that the unmixed and mixed digesters performed quite similarly when fed with 5% manure slurry, but the effect of mixing and the mode of mixing became prominent in the case of the digesters fed with thicker manureslurry (10%).
160 citations
TL;DR: In this article, the performance of a sequential hydrogen and methane fermentation in two stage process and one stage process were tested in batch reactor at varying ratios of feedstock to microbial inoculum (F/M) under mesophilic incubation.
159 citations
TL;DR: In this paper, the experimental and theoretical studies conducted on the possible effects of oxygen in biogas generating anaerobic digesters are discussed together with other relevant aspects, and it is shown that the partial aeration assisted AD can serve as a beneficial treatment strategy for simultaneous waste treatment and energy generation, for a multitude of organic waste categories.
Abstract: This article reviews the experimental and theoretical studies conducted on the possible effects of oxygen in biogas generating anaerobic digesters. The interactions of oxygen with various biochemical processes associated with anaerobic digestion are discussed together with other relevant aspects. The conventional perception of oxygen being merely toxic in anaerobic digestion (AD) is refuted. Digesters can withstand significant levels of oxygenation without drastic negative impacts. Limited quantities of oxygen can even lead to improved AD reactor performance under certain operating conditions. Co-existence of anaerobic and aerobic cultures in a single bioreactor environment has been demonstrated. It is shown that the partial aeration assisted AD can serve as a beneficial treatment strategy for simultaneous waste treatment and energy generation, for a multitude of organic waste categories.
159 citations
01 Jan 2005
TL;DR: The paper presents the results of two full-scale applications of the anaerobic co-digestion process of waste activated sludge together with the organic fraction of municipal solid wastes at Viareggio and Treviso wastewater treatment plants, which determined a 50% increase in biogas production.
Abstract: The paper presents the results of two full-scale applications of the anaerobic co-digestion process of waste activated sludge together with the organic fraction of municipal solid wastes. The experiences were carried out at Viareggio and Treviso wastewater treatment plants (Italy). In the first plant, 3 tons per day of source sorted OFMSW were co-digested with waste activated sludge, increasing the organic loading rate from 1.0 to 1.2 kgTVS/m 3 d. This determined a 50% increase in biogas production. At Treviso WWTP, which has been working for 2 years, some 10 tons per day of separately collected OFMSW are treated using a low-energy consumption sorting line, which allows the removal of 99% and 90% of metals and plastics respectively. In these conditions, the biogas yield increased from 3,500 up to 17,500 m 3 /month. Industrial costs were evaluated less than 50 € per ton of organic waste, while the payback time was calculated as two years.
159 citations