Optimization of biogas production by co-digesting whey with diluted poultry manure

Gelegenis, John; Georgakakis, Dimitris; Angelidaki, Irini; Mavris, Vassilis

doi:10.1016/j.renene.2006.11.015

Cited by 200 publications

(105 citation statements)

References 16 publications

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“…Hence, the implications of combining or co-digesting animal wastes for biogas production need to be properly assessed for successful implementation of such anaerobic process. Co-digestion was used by researchers such as (Callaghan et al 1999;Gelegenis et al 2007;Chellapandi et al 2008) to improve biogas yield by controlling the carbon to nitrogen ratio.…”

mentioning

confidence: 99%

Ambient temperature kinetic assessment of biogas production from co-digestion of horse and cow dung

Yusuf¹,

Debora²,

Ogheneruona³

2011

Res. Agric. Eng.

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Yusuf M.O.L., Debora A., Ogheneruona D.E., 2011. Ambient temperature kinetic assessment of biogas production from co-digestion of horse and cow dung. Res. Agr. Eng., 57: 97-104.Biogas production from 5 batch digesters containing varying ratio of mix of horse and cow dung was studied for a period of 30 days at ambient temperature. It was observed that biogas production was optimized when horse and cow dung were mixed in a ratio of 3:1. The modified Gompertz equation was used to adequately describe the cumulative biogas production from these digesters. In addition, a modified first order model was developed to assess the kinetics of the biodegradation process. It was observed that the rates of substrate biodegradability and of removal of the biodegradable fractions of the substrate could be obtained by plotting 1/t (ln(dyt/dt)) against the inverse of time of digestion. This modified first order model also showed that the digester containing horse dung and cow dung in the ratio of 3:1 had the highest short term anaerobic biodegradability index (STABI) of 3.96 at room temperature.

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confidence: 99%

Ambient temperature kinetic assessment of biogas production from co-digestion of horse and cow dung

Yusuf¹,

Debora²,

Ogheneruona³

2011

Res. Agric. Eng.

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“…Cheese whey (CW), one of the major by-products of the dairy industry, contains a significant amount of carbohydrates (4-5%), mainly lactose, proteins not exceeding 1%, fats at about 0.4-0.5%, lactic acid less than 1% and salts that may range from 1% up to 3% [1]. It is highly biodegradable with a very high organic content (up to 70 g COD/L) and low alkalinity (50 meq/L) [2].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Biogas Production by Using a Two-Stage Process for the Anaerobic Digestion of Cheese Whey

et al. 2017

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Cheese making companies have a specific product that is seasonally produced and, like most other agro-industries, generate wastewaters characterized by a high organic loading. Cheese whey is the most important waste stream produced having a high organic content (up to 70 g COD/L), which is highly biodegradable, and low alkalinity (50 meq/L). Cheese production industries worldwide generate more than 145 million tones of liquid whey per year. Because of these characteristics, cheese whey may cause serious environmental problems on the local municipal sewage treatment systems or water receptors if disposed untreated. Anaerobic digestion is a particularly attractive treatment solution for high strength wastewaters due to the operational economy and generation of biogas and therefore is considered as a promising solution for energy production from cheese whey, in this case. In this work, a comparative study between single and two-stage anaerobic treatment of cheese whey was conducted in order to enhance biogas production. Our experiments were carried out using one reactor for the single-stage process (operated at a HRT of 20 d), and two reactors connected in series, from which the first one was used for acidogenesis (operated at a HRT of 3 d) and the other for methanogenesis (operated at a HRT of 20 d). The single-stage process presented many operational problems, as a result of little or no buffering capacity of whey, which caused the pH of the anaerobic digester to drop drastically and the process being inhibited. This kind of inhibition proved to be irreversible and the digester was not able to recover even though it was operated batchwise and the value of the pH was restored to 7.0. On the contrary, the two-stage process exhibited a stable biogas production rate of 1.57 L/L reactor /d with the composition of methane in the biogas reaching 54.3%. The dissolved COD and total carbon concentration removal was 70.5% and 77.2% respectively.

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“…Organic waste such as dead plant and animal material, animal feces, and kitchen waste can be converted into a gaseous fuel called biogas (Gelegenis, et al, 2007). Biogas originates from biogenic material and is a type of bio fuel.…”

Section: Introductionmentioning

confidence: 99%

Biogas as Resources of Energy

Seid

Sahu

2014

ILNS

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The objective of the study described the importance of biogas and its importance. The biogas generally obtained from the waste. The so-called wastes that we discard and suffer with the consequences of improper management are of course partly huge energy and fertilizer sources that can support energy demands of cities greatly. Urban waste disposal is a serious challenge in all cities in the developing world, and its accumulation is an additional health hazard. Reliable and generally accepted disposal of the comparatively large amounts of digestate produced is necessary if biogas production is to be implemented. In this regard's discussion has been about the biogas production reaction involves, design and applications

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Optimization of biogas production by co-digesting whey with diluted poultry manure

Cited by 200 publications

References 16 publications

Ambient temperature kinetic assessment of biogas production from co-digestion of horse and cow dung

Ambient temperature kinetic assessment of biogas production from co-digestion of horse and cow dung

Enhancement of Biogas Production by Using a Two-Stage Process for the Anaerobic Digestion of Cheese Whey

Biogas as Resources of Energy

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