ARTI developed in 2003 a new Biogas technology which uses high calorie feedstock, consisting of starchy or sugary material. This high calorie content in the material allows to produce 250 kg of methane per tonne of feedstock (on dry weight basis) in a process time of one day.
Which means that a household needing methane to cook 3 meals a day will need to feed its domestic plant with 2 kg of material per day. The material used can be so varied as: waste grain, seed of any plant species, oilcake of non edible oilseeds, non edible or non marketable fruits ( wild species of ficus, overripe mangos and bananas...) food rests, oil rests, even the flour swept from the floor of a flour mill can be used as feedstock for the biogas plant.
Because of the small quantities and the speed of the process, size, maintenance and price are drastically reduced:
-The gas holder of the plant has a capacity of 750 to 1000 litres which is enough to cook two meals for a family of 5.
-the user feeds daily the digester with one kilo mashed feedstock mixed with some water in the morning and one kg in the evening,
-the total daily effluent produced by this system is 10 litres, that can be watered to the garden plants or recycled in the digester.
-the new biogas plant ranges between Rs. 5000 and Rs. 6000 (112 to 135$, 2007) corresponding to the price of two in another fitting plastic water tanks, a concrete base and the necessary frame and plumbing ware.
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