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New Technology In Japan Uses Cow Manure To Produce Renewable Hydrogen, Creating A Sustainable Alternative For The Energy Sector And Reducing Pollutant Emissions
A city in northern Japan has found an innovative way to turn cow manure into hydrogen fuel. Located in Hokkaido, the region is an important hub of the dairy industry and is now betting on waste conversion to generate sustainable energy.
Hokkaido represents about 20% of Japan’s territory and is responsible for approximately 50% of the country’s milk production. However, the disposal of cow manure has always been an environmental challenge. Now, this waste can become a valuable resource for clean energy production.
Hydrogen is a promising fuel because, when used, it does not release carbon. This makes it an interesting alternative to fossil fuels. If its production can be scaled up, it could power any combustion engine vehicle.
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Renewable energy sources are gaining global prominence by driving the energy transition and reducing environmental impacts in the face of advancing climate change.
However, the most common way to obtain hydrogen currently involves the use of methane, a fossil fuel.
Cow Manure: Sustainable Alternative
The traditional method of producing hydrogen uses underground methane reserves, which still relies on fossil fuels. Another method is to split water into hydrogen and oxygen using electricity, but this process requires abundant energy and is only sustainable when using renewable sources.
The solution developed in Japan seeks a different approach. The Shikaoi Hydrogen Farm, located in Hokkaido, uses cow manure as feedstock. The production of bovine waste in the region is high, with over 20 million tons generated annually.
This abundant resource can be harnessed to provide hydrogen fuel in a more sustainable manner.
In addition to the energy benefit, this approach reduces environmental impacts. Cow manure can release large amounts of methane if not properly treated. Additionally, improper disposal can compromise water quality, contaminating rivers and groundwater.
Maiko Abe from Air Water, one of the companies involved in the project, highlights the importance of the initiative. “This project to produce hydrogen from cow manure originated in Japan and is unique to this place,” she told the BBC. According to Abe, Shikaoi accounts for 30% of the bovine waste in Hokkaido, making the region ideal for the development of this technology.
“Shikaoi is responsible for 30% of the cow dung and urine in Hokkaido, so it has great potential for renewable energy“, added Maiko Abe.
How The Process Works
The system adopted by the hydrogen farm begins with the storage of cow manure and urine in a large anaerobic digester. In this environment, bacteria are introduced to decompose the organic waste, generating biogas and liquid fertilizer.
The resulting biogas is then purified for methane extraction. This gas undergoes an additional refining process for conversion into hydrogen. The facility can produce about 70 cubic meters of hydrogen daily.
The farm has its own refueling station, where it is possible to fuel up to 28 hydrogen fuel cell vehicles per day.
The main focus of the initiative is to supply agricultural vehicles, such as tractors and forklifts. However, excess hydrogen can be stored and transported to other units.
Expansion Of The Model
The success of the project in Shikaoi could inspire other similar initiatives. In Japan, there are efforts to expand this technology to other regions. In Fukuoka, for example, there is a project that transforms human sewage into hydrogen to fuel municipal vehicles.
Despite challenges such as high production costs and difficulties in hydrogen storage, this model presents a promising alternative. Converting waste into clean fuel could represent a significant advancement in reducing dependence on fossil fuels and mitigating environmental impacts.
With information from Interesting Engineering.
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