Temperature conversion (mesophilic to thermophilic) of municipal sludge digestion

Rubia, M.A. de la; Romero, L.I.; Sales, D.; Pérez, Montserrat

doi:10.1002/aic.10546

Cited by 47 publications

(40 citation statements)

References 12 publications

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“…Biogas yields of TLPTD and SLTTD were 1.57 times and 1.06 times higher than that of MLPMD at 60 days dry digestion, respectively; which showed that thermophilic condition had superior performance with higher biogas production rate. Similar result was reported in digestion of municipal sludge [8] and in co-fermentation of cattle excreta and olive mill wastes in pilot anaerobic digesters [9]. From Fig.…”

Section: Biogas Yield Of Smooth Cordgrass From Dry Digestion By Lbrsupporting

confidence: 85%

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Effect of mesophilic and thermophilic conditions on changes of physicochemical characteristics of smooth cordgrass via dry digestion process

Liang

Zhang

Luo

et al. 2011

Chemical Engineering Journal

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Section: Biogas Yield Of Smooth Cordgrass From Dry Digestion By Lbrsupporting

confidence: 85%

“…Anaerobic digestion could be carried out at mesophilic condition (30-35 • C) and thermophilic condition (55-60 • C). Thermophilic digestion generally showed the superior performance with regard to higher gas production and better control of bacterial and viral pathogens [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of mesophilic and thermophilic conditions on changes of physicochemical characteristics of smooth cordgrass via dry digestion process

Liang

Zhang

Luo

et al. 2011

Chemical Engineering Journal

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“…Elefkiniotis and Oldham (1994) reported an increase in VFA production when the HRT was increased from 6-12 h which then decreased with further increase in the HRT to 15 h. Maharaj and Elefsiniotis (2001) noted highest VFA concentration at an HRT of 30 h as appose to 48 and 60 h while an aerobically treating wastewaters. De la Rubia et al (2002) found that the VFA production increased from 5532-6432 mg L −1 as the HRT decreased from 75-20 days.…”

Section: ------------------------------------------------------------mentioning

confidence: 99%

“…Generally, the shorter the HRT the lower the TVS reduction. De la Rubia et al (2002) reported an increase in the TVS reduction (from 53-73%) as the HRT increased from 27-75 d. Ribas and Barana (2003) reported an increase in the TVS from 1.6-4.3% in a wastewater treatment system as the HRT was decreased from 16.6-9.7 d. Umana et al (2008) reported an increase in the TVS reduction (from 26.3-78.8%) during the treatment of dairy manure as the HRT was increased from 1-5.5 d. Rico et al (2011b) noted that the concentration of TVS increased from 23.7-27.8 g L −1 during anaerobic treatment of dairy manure as the HRT decreased from 20-10 d. The reduction in the TVS obtained in this study (25.2-39.7%) were within the range reported in the literature. The diurnal cycling temperature also affected the TVS reductions, the higher the temperature the higher the TVS reduction.…”

Section: ------------------------------------------------------------mentioning

confidence: 99%

Effect of Diurnally Cyclic Temperature on the Performance of a Continuous Mix Anaerobic Digester

Ghaly¹,

Hattab²

2011

American Journal of Biochemistry and Biotechnology

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Problem statement: Concentrated livestock production is a major contributor to environmental problems through the production of large quantity of husks on relatively small land area. Anaerobic digestion represents a valuable means of cover by these husks into methane while reducing manure pollution problems. Methodology: An experimental apparatus, including data acquisition and control system, was developed and used to investigate the effects of two diurnally cyclic temperature ranges (20-40 and 15-25°C) and four levels of hydraulic retention times (25, 20, 15 and 10 d) on the performance of anaerobic reactors operated on screened dairy manure. Results: The reactor temperature exhibited a lag relative to the chamber temperature. For the 20-40°C temperature cycles, the average lag at the maximum chamber temperature was 3.75 h while the lag at the minimum chamber temperature was 4.37 h. For the 15-25°C temperature cycle, the average lag at maximum chamber temperatures was 3.61 while the lag of the minimum chamber temperature was 4.34 h. The effluent solids content, total Kjeldahl nitrogen and ammonium nitrogen concentrations were not adversely affected by the reactor diurnally cyclic temperature. The observed values of these parameters compared fairly well with the values obtained by other researchers. The effluent total solids, volatile suspended solids, TKN, NH 4 -N and methane content of the biogas diurnally cyclic patterns were out of phase with the diurnally cyclic pattern of the reactor temperature by about 12 h under most of the investigated operating conditions. The pH and the carbon dioxide content of the biogas all exhibited a diurnally cyclic pattern which was in phase with the reactor diurnally cyclic temperature. The reductions in total solids, total suspended solids, fixed suspended solids, total Kjeldahl nitrogen, ammonium nitrogen and methane yield were all significantly affected by the diurnal temperature range and hydraulic retention time. Conclusion: The measured reactor pH followed a diurnally cyclic pattern which was in phase with the reactor temperature. At the operating temperature cycle of 20-40°C, the reactor pH ranged from 6.80-7.54 while VFA concentration ranged from 44.7-154.8 mg L .

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“…According to De La Rubia et al (2005), the thermophilic microorganisms are more sensitive than mesophilic microorganisms for environmental changes. In terms of solid waste digestion, the yield and rate of biogas production depends mainly on operation temperature; but other factors such as setting the reactor and the chemical composition of the waste also influence it (Bouallagui et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature on the anaerobic stabilization of organic solid residues

Menezes¹,

Leite²,

Barros³

et al. 2015

Afr. J. Biotechnol.

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This study was aimed at determining the effect of temperature on the stabilization of organic solid waste conjugated with sewage sludge in anaerobic batch reactors (ABR), and to estimate the efficiency of the process in producing biogas and methane. The substrate contained 36.2 g L -1 of total solids comprising residues from fruits and vegetables enriched with anaerobic sludge from sanitary sewage (4:1, w/w). The reactors were of 1.15 L capacity and were operated at 25.5, 40 and 50°C (ABR1, ABR2 and ABR3, respectively) for 160 days. The efficiencies of transformation of total volatile solids in ABR1, ABR2 and ABR3 were, respectively, 43.2, 34.2 and 32%, and the transformation of chemical oxygen demand showed a similar tendency with efficiencies of 39.5, 33.6 and 16.6%, respectively. The mean volumes of biogas accumulated by ABR1, ABR2 and ABR3 were 28.85, 21.24 and 20.54 L, respectively, while the respective mean volumes of methane were 9.04, 7.11 and 1.11 L. The results demonstrate that the activity of methane-producing microorganisms was inhibited at higher process temperatures. It is concluded that anaerobic digestion at ambient temperature represents an economical and environmentally viable strategy for the disposal of municipal solid wastes.

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Temperature conversion (mesophilic to thermophilic) of municipal sludge digestion

Cited by 47 publications

References 12 publications

Effect of mesophilic and thermophilic conditions on changes of physicochemical characteristics of smooth cordgrass via dry digestion process

Effect of mesophilic and thermophilic conditions on changes of physicochemical characteristics of smooth cordgrass via dry digestion process

Effect of Diurnally Cyclic Temperature on the Performance of a Continuous Mix Anaerobic Digester

Influence of temperature on the anaerobic stabilization of organic solid residues

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