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ring methane that would otherwise be released through unmanaged decomposition it can also improve sanitation and agricultural production through the use of digestate as a fertilizer 106 in high income countries there is more reliance on dedicated energy crops like corn and soy some comparative studies show that waste based systems can be more appropriate in resource constrained environments where land water and finances are limited 107 limitations and challenges edit despite many potential benefits small biogas systems still face several barriers before widespread adoption can happen high installation costs can be problematic especially in low income households and increasingly difficult without government support programs and grants 104 seasonal variability in feedstock availability and water scarcity can also reduce gas production at times and is largely affected by climate related factors another issue occurs when digesters are not maintained because of a lack of technical support making repairs difficult 104 research initiatives in sub saharan africa and south asia have shown that technical feasibility alone cannot guarantee sustained use these systems also need to be socially accepted and supported through training programs institutional support and policy frameworks regions that implement community engagement alongside technical deployment often see higher adoption and long term operation rates 106 emerging alternative energy feedstocks edit outside some of the more traditionally waste based inputs like manure and food residues researchers have also investigated biomass crops for anaerobic digestion with lots of promises some perennial grasses including switchgrass panicum virgatum miscanthus miscanthus giganteus and napier grass cenchrus purpureus have experienced lots of recent attention due to their high biomass yields in comparison to typical biofuel crops as well as the ability to grow on marginal land with relatively low speaking input requirements 108 india edit biogas in india 109 has been traditionally based on dairy manure as feed stock and these gobar gas plants have been in operation for a long period of time especially in rural india in india early development of biogas technology during the mid 20th century included experimental and demonstration work by engineers and researchers promoting gobar gas systems for rural energy use among these was dr ram bux singh who established an early successful biogas plant in 1957 in sitapur uttar pradesh and later contributed to applied research and dissemination of biogas systems through work associated with the gobar gas research station at ajitmal his technical work formed part of india s early efforts to promote decentralized renewable energy solutions based on agricultural waste in the last 2 3 decades research organisations with a focus on rural energy security have enhanced the design of the systems resulting in newer efficient low cost designs such as the deenabandhu model the deenabandhu model is a new biogas production model popular in india deenabandhu means friend of the helpless the unit usually has a capacity of 2 to 3 cubic metres it is constructed using bricks or by a ferrocement mixture in india the brick model costs slightly more than the ferrocement model however india s ministry of new and renewable energy offers some subsidy per model constructed biogas which is mainly methane natural gas can also be used for generating protein rich cattle poultry and fish feed in villages economically by cultivating methylococcus capsulatus bacteria culture with tiny land and water foot print 110 111 112 the carbon dioxide gas produced as by product from these plants can be put to use in cheaper production of algae oil or spirulina from algaculture particularly in tropical countries like india which can displace the prime position of crude oil in near future 113 114 union government of india is implementing many schemes to utilise productively the agro waste or biomass in rural areas to uplift rural economy and job potential 115 116 with these plants the non edible biomass or waste of edible biomass is converted in to high value products without any water pollution or green house gas ghg emissions 117 lpg liquefied petroleum gas is a key source of cooking fuel in urban india and its prices have been increasing along with the global fuel prices also the heavy subsidies provided by the successive governments in promoting lpg as a domestic cooking fuel has become a financial burden renewing the focus on biogas as a cooking fuel alternative in urban establishments this has led to the development of prefabricated digester for modular deployments as compared to rcc and cement structures which take a longer duration to construct renewed focus on process technology like the biourja process model 118 has enhanced the stature of medium and large scale anaerobic digester in india as a potential alternative to lpg as primary cooking fuel in india nepal pakistan and bangladesh biogas produced from the anaerobic digestion of manure in small scale digestion facilities is called gobar gas it is estimated that such facilities exist in over 2 million households in india 50 000 in bangladesh and thousands in pakistan particularly north punjab due to the thriving population of livestock the digester is an airtight circular pit made of concrete with a pipe connection the manure is directed to the pit usually straight from the cattle shed the pit is filled with a required quantity of wastewater the gas pipe is connected to the kitchen fireplace through control valves the combustion of this biogas has very little odour or smoke owing to simplicity in implementation and use of cheap raw materials in villages it is one of the most environmentally sound energy sources for rural needs one type of these system is the sintex digester some designs use vermiculture to further enhance the slurry produced by the biogas plant for use as compost 119 in pakistan the rural support programmes network is running the pakistan domestic biogas programme 120 which has installed 5 360 biogas plants 121 and has trained in excess of 200 masons on the technology and aims to develop the biogas sector in pakistan in nepal the government provides subsidies to build biogas plant at home china edit as of at least 2023 china is both the world s largest producer and largest consumer of household biogas 122 172 the chinese have experimented with the applications of biogas since 1958 around 1970 china had installed 6 000 000 digesters in an effort to make agriculture more efficient during the last few years technology has met high growth rates this seems to be the earliest developments in generating biogas from agricultural waste 123 the rural biogas construction in china has shown an increased development trend the exponential growth of energy supply caused by rapid economic development and severe haze condition in china have led biogas to become the better eco friendly energy for the rural areas in qing county hebei province the technology of using crop straw as a main material to generate biogas is currently developing 124 china had 26 5 million biogas plants with an output of 10 5 billion cubic meter biogas until 2007 the annual biogas output has increased to 248 billion cubic meter in 2010 125 the chinese government had supported and funded rural biogas projects 126 as of 2023 more than 30 million rural chinese households use biogas digesters 122 172 during the winter the biogas production in northern regions of china is lower this is caused by the lack of heat control technology for digesters thus the co digestion of different feedstock failed to complete in the cold environment 127 zambia edit lusaka the capital city of zambia has two million inhabitants with over half of the population residing in peri urban areas the majority of this population use pit latrines as toilets generating approximately 22 680 tons of fecal sludge per annum this sludge is inadequately managed over 60 of the generated faecal sludge remains within the residential environment thereby compromising both the environment and public health 128 in the face of research work and implementation of biogas having started as early as in the 1980s zambia is lagging behind in the adoption and use of biogas in the sub saharan africa animal manure and crop residues are required for the provision of energy for cooking and lighting inadequate funding absence of policy regulatory framework and strategies on biogas unfavorable investor monetary policy inadequate expertise lack of awareness of the benefits of biogas technology among leaders financial institutions and locals resistance to change due cultural and traditions of the locals high installation and maintenance costs of biogas digesters inadequate research and development improper management and lack of monitoring of installed digesters complexity of the carbon market lack of incentives and social equity are among the challenges that have impeded the acquiring and sustainable implementation of domestic biogas production in zambia 129 associations edit world biogas association https www worldbiogasassociation org anaerobic digestion and bioresources association united kingdom https adbioresources org american biogas council https americanbiogascouncil org canadian biogas association https www biogasassociation ca european biogas association 130 german biogas association 131 indian biogas association 132 society and culture edit in the 1985 australian film mad max beyond thunderdome the post apocalyptic settlement barter town is powered by a central biogas system based upon a piggery as well as providing electricity methane is used to power barter s vehicles cow town clarification needed written in the early 1940s discusses the travails of a city vastly built on cow manure and the hardships brought upon by the resulting methane biogas carter mccormick an engineer from a town outside the city is sent in to figure out a way to utilize this gas to help power rather than suffocate the city citation needed contemporary biogas production provides new opportunities for skilled employment drawing on the development of new technologies 133 see also edit renewable energy portal energy portal anaerobic digestion oxygen free break down of material biochemical oxygen demand oxygen needed to remove organics from water biodegradability decomposition by living organisms pages displaying short descriptions of redirect targets bioenergy renewable energy made from biomass biofuel fuel derived from biological sources biohydrogen hydrogen that is produced biologically hydrogen economy using hydrogen to decarbonize more sectors landfill gas monitoring methanation conversion of carbon monoxide and carbon dioxide co x to methane ch 4 msw lfg municipal solid waste and landfill gas natural gas gaseous fossil fuel renewable energy energy collected from renewable resources renewable natural gas methane enriched biogas relative cost of electricity generated by different sources comparison of costs of different electricity generation sources pages displaying short descriptions of redirect targets thermal hydrolysis waste management activities and actions required to manage waste from its source to its final disposal european biomass association european bioenergy organisation pages displaying short descriptions of redirect targets references edit webdesign insyde how does biogas work www simgas com archived from the original on 10 may 2018 retrieved 16 may 2018 biogas engines clarke energy com retrieved 21 november 2011 are biofuels carbon neutral feedstocks applications 29 july 2025 retrieved 20 october 2025 1 2 government of canada canada energy regulator 24 november 2023 cer market snapshot two decades of growth in renewable natural gas in canada www cer rec gc ca retrieved 20 october 2025 liebetrau j ammenberg j gustafsson m pelkmans l murphy j d 2022 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