Towards sustainable farming: Feasibility study into energy recovery from bio-wastes on a small-scale dairy farm

Purdy Purdy, Pankaj Pathare, Yaodong Wang, Anthony Roskilly, Ye Huang

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Anaerobic digestion (AD) of farm biomass is growing importance as it offers environmental benefits and the biogas produced from AD which can be used as fuel for co-generation of heat and electricity. The study aimed to explore the viability of energy recovery from bio-wastes on a small-scale dairy farm to produce biogas using AD and the gas used as biofuel to fuel a combined heat and power (CHP) which generated electrical power and heat for the farm. The AD and the CHP system was designed and simulated using ECLIPSE software. Various ages of cow manure were sampled, analysed and used as an AD feedstock and it was found that as cow manure aged the amount biogas produced from anaerobic digestion was decreased; a reduction in biogas production of 5.76% was found over two months, and in the subsequent two months the reduction rate was found to accelerate, leading to a 16.92% reduction after four months. That means cow manure should be used as an AD feedstock as soon as possible, as carbon lost in the form of methane (CH4) occurs naturally in the atmosphere, accelerating over time. Early insertion of fresh manure into an anaerobic digester can significantly increase biogas production and subsequently reduce emissions of CH4, which has a global warming potential (GWP) of twenty-five times that of carbon dioxide (CO2). The simulation results indicated that enough energy can be recovered from the quantity of cow manure available on the farm to provide the electrical and heating energy demands of the farmyard and the attached dwellings, thus creating a sustainable farming system. In combination with the environmental benefits, it was determined that a substantial annual revenue could be generated from utility bill savings and current favourable incentive rates available to promote renewable energy technologies in farming industry in the UK.
Original languageEnglish
Pages (from-to)899-904
JournalJournal of Cleaner Production
Publication statusAccepted/In press - 4 Nov 2017

Bibliographical note

Reference text: Aguirre-Villegas, H.A., Larson, R.A., 2017. Evaluating greenhouse gas emissions from dairy manure management practices using survey data and lifecycle tools. Journal of Cleaner Production 143, 169-179.
Amon, T., Amon, B., Kryvoruchko, V., Zollitsch, W., Mayer, K., Gruber, L., 2007. Biogas production from maize and dairy cattle manure—Influence of biomass composition on the methane yield. Agriculture, Ecosystems & Environment 118, 173-182.
Carpenter, S.R., Caraco, N.F., Correll, D.L., Howarth, R.W., Sharpley, A.N., Smith, V.H., 1998. Nonpoint pollution of surface waters with phosphorus and nitrogen. Ecological applications 8, 559-568.
DECC, 2009. The UK renewable energy strategy.
DEFRA, 2010. Accelerating the uptake of anaerobic digestion in England: an implementation plan., London.
DEFRA, 2011. Anaerobic Digestion Strategy and Action Plan: A Commitment to Increasing Energy from Waste through Anaerobic Digestion.
El-Mashad, H.M., Zhang, R., 2010. Biogas production from co-digestion of dairy manure and food waste. Bioresource Technology 101, 4021-4028.
Government, U., 2006. Climate Change and Sustainable Energy Act., London: The Stationery Office Limited.
Maeda, K., Hanajima, D., Morioka, R., Toyoda, S., Yoshida, N., Osada, T., 2013. Mitigation of greenhouse gas emission from the cattle manure composting process by use of a bulking agent. Soil Science and Plant Nutrition 59, 96-106.
Møller, H.B., Nielsen, A.M., Nakakubo, R., Olsen, H.J., 2007. Process performance of biogas digesters incorporating pre-separated manure. Livestock Science 112, 217-223.
Pergola, M., Piccolo, A., Palese, A.M., Ingrao, C., Di Meo, V., Celano, G., 2017. A combined assessment of the energy, economic and environmental issues associated with on-farm manure composting processes: Two case studies in South of Italy. Journal of Cleaner Production.
Peters, J., Combs, S.M., Hoskins, B., Jarman, J., Kovar, J., Watson, M., Wolf, A., Wolf, N., 2003. Recommended methods of manure analysis. University of Wisconsin Cooperative Extension Publishing: Madison, WI.
Qiao, W., Yan, X., Ye, J., Sun, Y., Wang, W., Zhang, Z., 2011. Evaluation of biogas production from different biomass wastes with/without hydrothermal pretreatment. Renewable Energy 36, 3313-3318.
Ryden, J.C., Whitehead, D.C., Lockyer, D.R., Thompson, R.B., Skinner, J.H., Garwood, E.A., 1987. Ammonia emission from grassland and livestock production systems in the UK. Environmental Pollution 48, 173-184.
Salam, B., Biswas, S., Rabbi, M.S., 2015. Biogas from Mesophilic Anaerobic Digestion of Cow Dung Using Silica Gel as Catalyst. Procedia Engineering 105, 652-657.
Ulster, T.U.o., 1992. ECLIPSE Process Simulator, Energy Research Centre, Jordanstown, Northern Ireland.
Williams, B.C., McMullan, J.T., 1996. Techno-economic analysis of fuel conversion and power generation systems—the development of a portable chemical process simulator with capital cost and economic performance analysis capabilities. International Journal of Energy Research 20, 125-142.
UK Government, 2008 Climate Change Act, 2008
National Statistics, Final UK greenhouse gas emissions national statistics: 1990-2015, 2017


  • Farm bio-wastes
  • combined heat and power
  • biogas
  • anaerobic digestion


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