How about turning the smelly, pest-infested, unattended kitchen waste into fuel for cooking? A look at one model by Nandhini Sundar

Be it a household or a food court, kitchen waste and its accompanying disposal is a major problem to contend with. The waste is often left in the open, unattended, inviting unwelcome guests. A scientific mode of its disposal is a factor much sought after, with composting being one of the avenues.

But how about turning this smelly, pest-infested waste into kitchen fuel, besides addressing concerns of global warming? For, every tonne of methane gas emitted by untreated kitchen waste is equal to 21 tonnes of carbon emissions.

Instead of releasing this into the atmosphere and accelerating global warming, the methane gas can be used for cooking, similar to LPG. While this certainly involves a scientific process, in one stroke it eliminates the foul-smelling heavy wet waste disposal while offering a ready-to-use kitchen fuel in the backyard.

For small-scale operations

Currently options do prevail for converting kitchen waste into cooking gas but unfortunately the high-performance technology options available address large quantities of waste rather than small scale. The ‘Eco Digester’ designed and developed by Eco Positive Solutions, a FutureIP Group Company, fills precisely this gap, catering to small apartments, restaurants, schools and corporate canteens where generation of waste is not massive.

Interestingly, the scale of operations addressed by the Eco Digester is such that, if implemented across the board in all small apartments, hotels, restaurants, corporate canteens and other places where the wet waste generated is significant yet not large enough to accommodate the present high-performance technology options available, it has the potential to drastically transform the mode of wet waste disposal in the city. The aesthetically designed next-generation bioreactor occupies minimal space for its installation, with the slurry totally concealed from view. The reactor is also designed to address the drawbacks of existing technology such as the prevalence of gap between the bioreactor and gas holder through which methane gas escapes.

NANDHINI SUNDAR

The crowning element of the EcoDigester technology is the use of wind power to run the EcoStirrer for kitchen waste conversion


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  • If implemented across the board in all small apartments, hotels, restaurants or corporate canteens where wet waste generated is significant yet not large enough to accommodate the present high performance technology options available, it has the potential to drastically transform the mode of wet waste disposal in the city.



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  • The electricity used is minimal while the wind turbine supplies the major portion of the mechanical power requirement, with solar power absorbed merely by virtue of its design rather than through external solar cells.



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  • The EcoDigester, which is totally sealed and potable, and is not based on the prevalent floating drum mechanism, incidentally has the gas holder separated from the bioreactor, enabling the two to be placed in separate places in case of space constraint.