Effect of temperature on the anaerobic digestion of palm oil mill effluent

Choorit, Wanna; Wisarnwan, Pornpan

doi:10.2225/vol10-issue3-fulltext-7

Cited by 107 publications

(76 citation statements)

References 16 publications

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“…In their investigations, biomethane potential (BMP) is now widely used to compare substrates for different sources and conditions for biogas production [7][8][9][10][11]. One of the problems of the wastewater from palm oil industry is its low pH value (pH ~ 4.7) and nutrient imbalance such as too high C/N ratio or incomplete range of mineral source [12]. Adding chemical to improve initial pH of the wastewater is normally not cost effective.…”

Section: Introductionmentioning

confidence: 99%

Effect of dilution and ash supplement on the bio-methane potential of palm oil mill effluent (POME)

Jijai¹,

Muleng²,

Siripatana³

2017

AIP Conference Proceedings

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Section: Introductionmentioning

confidence: 99%

Effect of dilution and ash supplement on the bio-methane potential of palm oil mill effluent (POME)

Jijai¹,

Muleng²,

Siripatana³

2017

AIP Conference Proceedings

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“…Maharaj and Elefsiniotis (2001) noted increased VFA concentrations as the temperature was increased from 8-25°C, which then decreased upon further increase in temperature (from 25-35°C). Choorit and Wisarnwan (2007) Organic wastes are first converted to long chain fatty acids in the acidogenic stage of anaerobic digestion processes. Volatile acids are further converted to acetic acid which together with hydrogen and formate serve as substrates for methane bacteria.…”

Section: Volatile Fatty Acidsmentioning

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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“…Many studies have been developed using crops as the only substrate providing nutrients for microbial respiration (Abdoun and Weiland 2009;Jarvis et al 1997;Weiland 2010). Several studies have shown that combinations of feed stocks, manure, organic wastes from agriculture-related industries and food waste could also produce good biogas yields (Aubart and Bully 1984; Bouallagui et al 2004;Choorit and Wisarnwan 2007;Jimenez et al 1989;Thangamani et al 2010). Both Kumar et al (2008) and Thanganami et al (2010) reported that anaerobic digestion is a feasible treatment of tannery waste to reduce biomass and produce biogas.…”

Section: Introductionmentioning

confidence: 99%

The effect of electron acceptors on biogas production from tannery sludge of a Mexican wastewater plant

Ruiz-Aguilar

Lovanh

Camarena-Aguilar

et al. 2015

Int. J. Environ. Sci. Technol.

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Effluents from the leather processing generally are discharged into rivers or are used to irrigate farmland. The biogas production from the digestion of sludge produced could be used as alternative sources for energy and power generation. A study was carried out to examine the effects of various electron acceptor amendments on biogas production from Mexican tannery sludge. Two bench scale experiments were performed: The first experiment used different electron acceptors (nitrate, iron and sulfate) and three different levels for each variable (4.5, 9.0 and 13.5 mg/mL); in the second only urea was used as a nitrogen source with three carbon/nitrogen ratios (6.0, 8.0 and 11). It was found that the reactors with nitrate as electron acceptor (4.5 mg/mL) generated the most biogas (200 mL of biogas accumulated in 25 days). Similarly, the reactors with the lower ratio of carbon/nitrogen (6.0) produced larger biogas production (131.50 ± 19.1 mL of biogas) in a shorter period of time (9 days). The results also showed that the addition of glucose did not significantly influence the production of biogas.

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Effect of temperature on the anaerobic digestion of palm oil mill effluent

Cited by 107 publications

References 16 publications

Effect of dilution and ash supplement on the bio-methane potential of palm oil mill effluent (POME)

Effect of dilution and ash supplement on the bio-methane potential of palm oil mill effluent (POME)

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

The effect of electron acceptors on biogas production from tannery sludge of a Mexican wastewater plant

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