Effect of temperature on methane production from field-scale anaerobic digesters treating dairy manure

Arikan, Osman A.; Mulbry, Walter; Lansing, Stephanie

doi:10.1016/j.wasman.2015.06.005

Cited by 54 publications

(33 citation statements)

References 23 publications

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“…A large quantity of fibers was detected in the solid fraction, which is more difficult to degrade and be converted to methane (Arikan et al, 2015 andMoset et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

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Dairy manure wastewater in serial UASB reactors for energy recovery and potential effluent reuse

Montoya

Mazareli

Silva

et al. 2017

Braz. J. Chem. Eng.

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-This manuscript addresses the use of dairy manure wastewater (DMW) as a substrate for methane production in a high rate system -two serial UASB reactors -and the characterization of the effluent in the different phases of the treatment. Two experimental conditions were applied. In the first, the organic load rate (OLR) was 6.2 gCOD total L -1 d -1 and the hydraulic retention time (HRT) was 12 days, whereas in experiment 2 they were 14.2 gCOD total L -1 d -1 and 7.5 days, respectively. The reactors showed a high capacity of removal of COD and solids, i.e., above 71%, which led to bioenergy productivities of 0.55 and 0.73 L CH 4 L -1 d -1 in experiments 1 and 2, respectively. The methane yield in UASB1 was 0.19 and 0.08 L CH 4 g COD rem 1 , respectively, in experiments 1 and 2. The methane yield in UASB1 was greater than UASB2, with approximately 70% of methane content in the biogas in this reactor.The effluent characterization showed micro and macronutrients -some in high concentrations, as nitrogen, phosphorous, K, and Fe between 12.1 and 521.4 mg L -1 , and others in low concentrations, as Ca, Mg, Zn and Mn between 0.6 and 13 mg L -1 . Na was not removed from the UASB systems and its concentration in the effluent was raised to 23.5% in comparison with the substrate.

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“…A large quantity of fibers was detected in the solid fraction, which is more difficult to degrade and be converted to methane (Arikan et al, 2015 andMoset et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Arikan et al (2015) obtained methane production values of 5.0 m 3 week -1 , 0.37 m 3 kg -1 SV methane yield and a 44% reduction in volatile solids (VS). The authors operated a field-scale anaerobic digester at 35°C fed with scraped cow manure of 1.4 kg VS m 3 d -1 OLR.…”

Section: Introductionmentioning

confidence: 99%

Dairy manure wastewater in serial UASB reactors for energy recovery and potential effluent reuse

Montoya

Mazareli

Silva

et al. 2017

Braz. J. Chem. Eng.

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“…There was no significant difference between reactors R1 and R2. This can be explained if one takes into account the fact that, although the room temperature operating condition was below the optimum value in the mesophilic range, 35-37 ºC (Rich, 1963;Chayovan, 1988;Arikan et al, 2015), it was not excessively low.…”

Section: Experimental Seriesmentioning

confidence: 99%

Anaerobic Digestion of Wastewater With High Sulfate Concentration Using Micro-Aeration and Natural Zeolites

Montalvo

Prades

González

et al. 2016

Braz. J. Chem. Eng.

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-The behavior of anaerobic digestion in batch and UASB reactors using a microaerobic process and natural zeolites was studied. Laboratory assays were carried out across 4 sets of variables: different COD/SO 4 2-ratios, different airflow levels, with and without natural zeolites and room and mesophilic controlled temperatures. The microaerobic process demonstrated hydrogen sulfide removal levels exceeding 90% in most cases, while maintaining the flammable condition of the generated biogas. The level of COD removal exceeded 75% in UASB reactors despite their operation under very low hydraulic retention times (2.8-4.8 hours). The effectiveness of natural zeolites in accelerating UASB reactor startup was demonstrated.Results showing the positive influence of zeolites on the granulation process in UASB reactors were also achieved.

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“…Emission of CH 4 from stored manure, such as liquid dairy manure, is the result of complex microbial processes; the factors that control the magnitude of these emissions are not fully understood. Length of storage (Zeeman, ), crust characteristics (Hansen, Nielsen, Schramm, Nielsen, & Revsbech, ; Sommer, Petersen, & Søgaard, ), temperature (Arikan, Mulbry, & Lansing, ), substrate availability (Sommer, Petersen, & Moller, ), and the level of inoculum (Ngwabie et al., ; Wood et al., ) have been identified as factors that affect CH 4 emissions.…”

Section: Introductionmentioning

confidence: 99%

Does overwintering change the inoculum effect on methane emissions from stored liquid manure?

et al. 2020

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Greenhouse gas (GHG) emissions, especially methane (CH4), from manure storage facilities can be substantial. Methane production requires adapted microbial communities (“inoculum”) to be present in the manure. Complete removal of liquid dairy manure (thus removing all inoculum) from storage tanks in the spring has been shown to significantly reduce CH4 emissions over the following warm season. This study examined whether the same mitigation effect would occur after fall removal of liquid dairy manure. Emissions of CH4, nitrous oxide (N2O), ammonia (NH3), and CO2 were measured from six 11.88‐m3 tanks equipped with flow‐through chambers. There were three inoculated controls (20% inoculum) and three uninoculated treatments, where inoculum was completely removed in the fall/winter (0% inoculum). Direct N2O and NH3 (indirect N2O) were minor contributors to the total GHG budget, contributing <2% on a CO2 equivalent (CO2e) basis. Removal of inoculum led to a 34% decrease in total emissions on a CO2e basis and to a 29% decrease in the CH4 conversion factor compared with the inoculated control (0.37 vs. 0.52; p = .01). Overall, removing inoculum in the fall reduced CH4 emissions from manure storage tanks; however, fall inoculum removal was less effective than in a previous study where inoculum was removed in the spring. The timing of inoculum removal may affect the efficiency of this CH4 mitigation strategy. However, this method may be impractical for larger manure storage tanks. Further study is required to overcome challenges of time‐sensitive, complete inoculum removal from farm‐scale storage tanks.

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Effect of temperature on methane production from field-scale anaerobic digesters treating dairy manure

Cited by 54 publications

References 23 publications

Dairy manure wastewater in serial UASB reactors for energy recovery and potential effluent reuse

Dairy manure wastewater in serial UASB reactors for energy recovery and potential effluent reuse

Anaerobic Digestion of Wastewater With High Sulfate Concentration Using Micro-Aeration and Natural Zeolites

Does overwintering change the inoculum effect on methane emissions from stored liquid manure?

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