Anaerobic digestion in global bio-energy production: Potential and research challenges

Appels, Lise; Lauwers, Joost; Degrève, Jan; Helsen, Lieve; Lievens, Bart; Willems, Kris; Impe, Jan Van; Dewil, Raf

doi:10.1016/j.rser.2011.07.121

Cited by 764 publications

(381 citation statements)

References 44 publications

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“…Methane yield is affected by the composition and biodegradability of lignocelluose due to the recalcitrant nature of lignin (Frigon and Guiot, 2010;Chandra et al, 2012). These issues are the subject of ongoing technical research (Brown and Li, 2013;Chandra et al, 2012;Muhammad Nasir et al, 2012;Appels et al, 2011;Wu et al, 2010;Schievano et al, 2009;Xu and Li, 2012;Brown et al, 2012;Liew et al, 2012;Cui et al, 2011;Li et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Modelling the socio-economic impacts of modern bioenergy in rural communities in Ghana

Kemausuor

Bolwig

Miller

2016

Sustainable Energy Technologies and Assessments

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This study analyses ex-ante socio-economic impacts of biogas systems using a remote rural community in Ghana as a case study. An analysis was performed for a 300 m 3 bio-digester that relies on crop residue and animal manure as feedstock to produce methane gas for cooking using selected bioenergy economic and social indicators. With a 10 percent discount rate, a 30 year bio-digester lifetime and methane tariff starting at US$ 0.7/m 3 , the project will have a Net Present Value of approximately US$ 22,000, 16 year payback and an Internal Rate of Return of 11%. The project will create 4 full time unskilled labour positions during the investment year and 3 positions during operation years. Using methane from the bio-digester for cooking will displace approximately 170 tonnes of firewood per year and save the women in the community a total of 3,400 hours per year not fetching firewood. However, only 5% of households are willing to pay the base tariff of US$ 30 /m 3 with up to 60% willing to pay less than half the monthly tariff. To make tariffs affordable to rural households, there is the need for subsidy schemes from government or relevant agencies.

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Section: Introductionmentioning

confidence: 99%

Modelling the socio-economic impacts of modern bioenergy in rural communities in Ghana

Kemausuor

Bolwig

Miller

2016

Sustainable Energy Technologies and Assessments

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“…Fruit and vegetable wastes (FVW) are characterised by a high percentage of moisture (>80%), high organic content (volatile solids >95% of total solids) and are readily biodegraded, and are therefore suited to energy recovery through anaerobic digestion [1,2]. Gunaseelan [3] reviewed the data on anaerobic digestion of different types of fruit and vegetable waste, and concluded that the specific methane yield of FVW is very high compared to other municipal solid wastes.…”

Section: Introductionmentioning

confidence: 99%

Strategies for stable anaerobic digestion of vegetable waste

2012

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International trade and the market demand for pre-prepared agricultural produce is not only increasing the total quantity of waste agricultural biomass but also centralising its availability, making it potentially useful for energy production. The current work considers the suitability of vegetable trimmings and rejects from high-value produce air-freighted between Africa and Europe as a feedstock for anaerobic digestion. The physical and chemical characteristics of a typical mixed vegetable waste of this type were determined and the theoretical energy yield predicted and compared to experimentally-determined calorific values, and to the energy recovered through a batch biochemical methane potential test. A semi-continuous digestion trial was then carried out with daily feed additions at different organic loading rates (OLR). At an OLR of 2 g VS L -1 day -1 the substrate gave a methane yield of 0.345 L g -1 VS added with VS destruction 81.3%, and showed that 76.2% of the measured calorific value of the waste could be reclaimed as methane. This was in good agreement with the estimated energy recovery of 68.6% based on reaction stoichiometry, and was 99% of the biochemical methane potential (BMP). Higher loading rates reduced the specific methane yield and energy conversion efficiency, and led to a drop in digester pH which could not be effectively controlled by alkali additions. To maintain digester stability it was necessary to supplement with additional trace elements including tungsten, which allowed loading rates up to 4 g VS L -1 day -1 to be achieved. Stability was also improved by addition of yeast extract (YE), but the higher gas yield obtained was as a result of the contribution made by the YE and no synergy was shown. Co-digestion using card packaging and cattle slurry as co-substrates also proved to be an effective means of restoring and maintaining stable operating conditions.

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“…Cellulose, hemicellulose, and lignin are the three main components that are important sources for producing useful products, such as sugars from the fermentation process, chemicals and liquid fuels [5]. Lignocellulose can be obtained from wood, straw, rice husk, grasses, agricultural/forest wastes, industrial waste (wood, paper) and other fibrous materials [6].…”

Section: Characteristics Of Rice Huskmentioning

confidence: 99%

Biogas Production from Rice Husk Waste by using Solid State Anaerobic Digestion (SSAD) Method

Matin¹,

Hadiyanto²

2018

E3S Web Conf.

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Abstract. An effort to obtain alternative energy is still interesting subject to be studied, especially production of biogas from agriculture waste. This paper was an overview of the latest development of biogas researches from rice husk waste by Solid State Anaerobic Digestion (SSAD). The main obstacle of biogas production from rice husk waste was the lignin content which is very difficult degraded by microbes. Various pretreatments have been conducted, either physically, chemically as well as biologically. The SSAD method was an attractive option because of the low water content of rice husk waste. The biogas yield by SSAD method gave more attractive result compared to Liquid Anaerobic Digestion (LAD) method. Various studies were still conducted in batch mode laboratory scale and also has not found optimum operating conditions. Research on a larger scale such as bench and pilot scale with continuous systems will be an increase trend in the future research.

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Anaerobic digestion in global bio-energy production: Potential and research challenges

Cited by 764 publications

References 44 publications

Modelling the socio-economic impacts of modern bioenergy in rural communities in Ghana

Modelling the socio-economic impacts of modern bioenergy in rural communities in Ghana

Strategies for stable anaerobic digestion of vegetable waste

Biogas Production from Rice Husk Waste by using Solid State Anaerobic Digestion (SSAD) Method

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