Analysis and characterisation of biogas feedstocks

Drosg, B.; Braun, Rudolf; Bochmann, Günther; Saedi, Teodorita Al

doi:10.1533/9780857097415.1.52

Cited by 55 publications

(65 citation statements)

References 4 publications

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“…The high carbohydrate content in the PA was expected as it is partly digested animal feed. The high fat contents of the SO and SHWM bode well in terms of methane production with fats having a 85% and 75% higher methane potential than carbohydrates and proteins respectively [22,40].…”

Section: Characterisation Of Organic Waste Streamsmentioning

confidence: 99%

Biogas from cattle slaughterhouse waste: Energy recovery towards an energy self-sufficient industry in Ireland

Ware

Power

2016

Renewable Energy

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a b s t r a c tThis study was carried out to assess the energy recovery potential from organic industrial by-products of a cattle slaughtering facility. There are several processes to convert organic material to energy; the technology of interest in this study was anaerobic digestion, the biological conversion of degradable organic material into methane. The scenario was initially confined to a full scale cattle slaughtering facility processing 3.28% of heads slaughtered in Ireland. The methane potential of dissolved air flotation sludge, paunch, soft offal as well as a mixed waste stream (combination of individual waste streams) was determined through a series of biochemical methane potential assays under mesophilic conditions. The methane potential of the characterised waste streams ranged from 49.5 to 650.9 mLCH 4 gVS À1 . The potential energy recovery from the mixed waste stream resulted in the prospective subsidy of 100% of the energy demands of the slaughtering facility as well as the energy demands for the production of the biogas. When investigating the impact of energy recovery from the entire sector the potential energy recovery equated to 1.63% of the final energy demands of the Irish industrial sector. This could potentially increase the RES in Ireland from 7.8% to 8.13% contributing to both RES-E and RES-H.

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Section: Characterisation Of Organic Waste Streamsmentioning

confidence: 99%

Biogas from cattle slaughterhouse waste: Energy recovery towards an energy self-sufficient industry in Ireland

Ware

Power

2016

Renewable Energy

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“…BMP tests were conducted in triplicate according to VDI 4630 [45] with slight modifications, as proposed by Drosg et al [46]. A total of 400 g of digested sludge derived from a local wastewater treatment plant (Tulln, Austria, 36,000 population equivalents) was used as the inoculum, with a VS content ranging from 0.94 to 1.34%.…”

Section: Biochemical Methane Potential (Bmp)mentioning

confidence: 99%

Acutodesmus obliquus as a benchmark strain for evaluating methane production from microalgae: Influence of different storage and pretreatment methods on biogas yield

Gruber-Brunhumer

Jerney

Zohar³

et al. 2015

Algal Research

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“…The concentration of NH 3 is temperature and pH dependent. Inhibition starts somewhere between 1500 and 3000 mg L −1 TAN, but higher concentrations (up to 8500 mg L −1 ) can be tolerated [6] but often with a reduction in biomethane production.…”

Section: Importance Of Biofuel Production From Residuesmentioning

confidence: 99%

“…[13] 1. 6. Literature on digestion of cheese waste Waste from cheese production is also a high nitrogen content substrate, typically with a C:N ratio below 15.…”

Section: Literature On Digestion Of Abattoir Wastementioning

confidence: 99%

Evaluation of the biomethane yield from anaerobic co-digestion of nitrogenous substrates

Allen¹,

Browne²,

Murphy³

2013

Environmental Technology

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This paper examines three substrates for anaerobic co-digestion: abattoir waste; cheese waste and food waste. These substrates were assessed in detail for suitability for biomethane production. Biomethane potential (BMP) assays were carried out in mono and co-digestion for the three substrates and two mixes: T1 (40% abattoir waste; 50% cheese waste and 10% food waste on a wet weight basis) and T2 (30% abattoir waste; 40% cheese waste and 30% food waste). The C:N ratio of both mixes was below optimum. Low levels suggest that the production of free ammonia (NH3) in semi-continuous digestion was of primary concern. Both mixes were digested in a semi-continuous process for 25 weeks. The recommended operating condition for T1 was a loading rate of 3 kg VS mn(-3) day(-1) at a retention time of 23 days. The biomethane yield was 305 L CH4 kg(-1) volatile solids (VS) which was 87% of the BMP value and equivalent to 61% biodegradability. For T2 (with the higher C:N ratio) a higher loading rate of 4kg VS mn(-3) day(-1) at a lower retention time of 15 days was recommended. The biomethane yield was 439 L CH4 kg(-1) VS (99% of the BMP value and 84% biodegradibility). At these conditions, levels of total ammonical nitrogen (TAN) were 4109 and 4831 mg L(-1) for T1 and T2, respectively. These values are on the large side according to the literature. The temperature was reduced to 35 degrees C to minimize toxicity associated with TAN. Ratios of volatile acids to bicarbonate were typically in the range of 0.2-0.3 suggesting stable operation.

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Analysis and characterisation of biogas feedstocks

Cited by 55 publications

References 4 publications

Biogas from cattle slaughterhouse waste: Energy recovery towards an energy self-sufficient industry in Ireland

Biogas from cattle slaughterhouse waste: Energy recovery towards an energy self-sufficient industry in Ireland

Acutodesmus obliquus as a benchmark strain for evaluating methane production from microalgae: Influence of different storage and pretreatment methods on biogas yield

Evaluation of the biomethane yield from anaerobic co-digestion of nitrogenous substrates

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