Anaerobic co-digestion of desugared molasses with cow manure; focusing on sodium and potassium inhibition

Fang, Cheng; Boe, Kanokwan; Angelidaki, Irini

doi:10.1016/j.biortech.2010.09.077

Cited by 122 publications

(50 citation statements)

References 19 publications

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“…Researches have been done to try to enhance methane gas production during co-digestion of food waste by combining it with other organic matter (Fang et al 2011;Jiang et al 2013;Kabouris et al 2009;Kabouris 2008;L. Martín-Gonzáleza 2010;Long et al 2012).…”

Section: Stability Of the Anaerobic Digestionmentioning

confidence: 99%

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Demitry¹,

Zhong²,

Hansen³

et al. 2015

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Anaerobic Digestion Model Number1 (ADM1) was modified in order to predict accurately the impact of co-digesting bakery waste (BW) with municipal sludge (MS). BW is an industrial waste (300,000 gallons per day in USA) that contains a high concentration of organic matter (carbohydrates, low lipids and non-detected proteins). BW is an easily biodegradable substrate for creating a favorable microorganism growth environment, which enhances the biogas production needed for wastewater facilities. The modified ADM1 successfully predicted changes in pH, volatile fatty acids (VFA), propionic acid and methane gas production. The ADM1 outputs were compared to experimental batch reactor results of actual BW addition percentages in order to validate the model. Stability of the digestion process was achieved until the ratio range of 37-40% BW: 60-63% MS, and the digestion processes were inhibited at higher ratios of BW. This research provides an alternative to BW management through utilizing the BW to enhance methane production.

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Section: Stability Of the Anaerobic Digestionmentioning

confidence: 99%

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Demitry¹,

Zhong²,

Hansen³

et al. 2015

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“…According to literature reports, the AD process is most typically applied to food waste from restaurants [6][7], either individually or after mixing it with other substrates. Moreover, experiments are carried out with food waste arising in the food processing industry such as sugar beet pulp [8], molasses [9], cheese whey [10], fat [11], coffee waste [12], fruit and vegetable waste [13], and dumpling waste [14]. Those with the use of waste arising in confectionery production are carried only very rarely, even though the material -which is usually highly concentrated and rich in carbohydrates -is a promising substrate for the production of biogas, including methane.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Co-Digestion of Waste Wafers from Confectionery Production with Sewage Sludge

Pilarska

2018

Pol. J. Environ. Stud.

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Food waste (FW) is generated in high volumes and is a serious threat to the environment if utilized improperly or left without control. Conventional methods of FW disposal include combustion, landfi lling, aerobic composting, partial recycling, and other ones. Anaerobic digestion (AD) is the most environmentally friendly of all the methods as it is benefi cial to the populace, and food waste is a suitable material for biogas production.Confectionery waste has rarely been utilized by anaerobic digestion (AD) so far. In this paper, the use of waste wafers (WF) in co-digestion with sewage sludge (SS) is proposed for the fi rst time. Annual volumes of production of WW and SS are expressed in hundreds and thousands of tons, respectively. The materials are generated in high amounts and on an ongoing basis, which is a very important factor regarding potential biogas plant investment projects. The objective of this paper was to analyze the AD process of the test substrates in terms of process stability and biogas capacity. The studies have shown that both the waste wafers as the individual material and with sewage sludge (as the co-substrate) are suitable feedstocks for biogas production. The experiments were carried out for the individual material and for a system with a cosubstrate in the form of raw sewage sludge (SS). In both cases, a digested sewage sludge was used as the inoculum. The studies were performed in a laboratory scale using anaerobic batch reactors under controlled (mesophilic) temperature and pH conditions. The highest yields of biogas and methane were obtained for waste wafers (980. ), than for the wafers (WF). The differences in biogas production for the samples were primarily connected with the substrates' composition, including with the content of readily degradable organic compounds and C/N ratio. The combination of waste wafers with raw sewage sludge has appeared to be benefi cial, as evidenced by the results of microbiological and biochemical analyses. The sample WF_SS was

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“…These wastes showed better process stability when co-digested with manure than when treated alone (Fang et al, 2011a;2011b). However, the application of co-digestion is sometimes associated with process imbalance from potential inhibiting compounds in the co-substrate such as ammonia from protein or long chain fatty acids from lipid wastes.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Modeling for Improving Synergy and Robustness of a Manure Co-Digestion Process

Lima

Rodrigues

Boe

et al. 2016

Braz. J. Chem. Eng.

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-Biogas production is becoming increasingly important in the environmental area because, besides treating wastewaters, it also generates energy. Co-digestion has become more and more powerful since it is possible, with the use of abundant and cheap substrates, to dilute the inhibitory effects of various other substrates, making the process of anaerobic digestion more efficient and stable. Biogas process modelling describes the kinetics and stoichiometry of different steps in the anaerobic digestion process. This mathematical modelling provides an understanding of the processes and interactions occurring inside the biogas system. The present work investigated the interactions between different simple co-substrates (carbohydrate, lipid and protein) and real co-substrates (corn silage, fodder beet, grass and wheat straw) under co-digestion with manure, in order to verify synergetic effects. Subsequently, some experiments were reproduced, in order to evaluate the synergy obtained in the previous simulation and validate the model.

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Anaerobic co-digestion of desugared molasses with cow manure; focusing on sodium and potassium inhibition

Cited by 122 publications

References 19 publications

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Modifying the ADM1 Model to Predict the Operation of an Anaerobic Digester Co-digesting Municipal Sludge with Bakery Waste

Anaerobic Co-Digestion of Waste Wafers from Confectionery Production with Sewage Sludge

Anaerobic Modeling for Improving Synergy and Robustness of a Manure Co-Digestion Process

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