This startup uses fish poop to grow fresh leafy greens inside a Brooklyn warehouse

Could Farming Be an NYC Growth Sector? from Gunjan Banerji on Vimeo.

In a year, the company estimates the farm will produce about 50,000 pounds of tilapia and 130,000 pounds of leafy greens, such as chard, kale, mustard greens, and radish greens.

By Leanna Garfield
Tech Insider
May 18, 2016

Excerpt:

Edenworks is an urban farming startup that will soon grow different varieties of greens inside a 10,000-square-foot Brooklyn warehouse all while raising tilapia and using their waste as fertilizer.

Set to open by the end of 2016, the vertical farm, called Farmstack, will act as a man-made ecosystem and function without natural sunlight.

The fish will be raised in tanks with a special type of bacteria that can turn the fish waste into fertilizer, which will in turn be used to help grow the vegetables with LED lights in trays stacked 20 feet high. The plants will then filter the water, which the team sends back to the fish.

“It’s almost like brewing beer, but we’re fermenting poop into really rich fertilizer, like liquid manure,” Edenworks’ CEO Jason Green tells Tech Insider.

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The Guardian: Greenhouse in the sky – inside Europe’s biggest urban farm

urbgUrbanFarmers’ greenhouse is ‘an example of cities reconnecting with food’, says Jan Willem van der Schans. Photograph: space & matter

“I always refer to the debates about parks in the city in the past. I think in 100 years, urban agriculture will be as normal as the city parks we have today.”

By Senay Boztas
The Guardian
Apr 27, 2016

Excerpt:

De Schilde, a brick-and-glass flanked seven-storey building, was built as a television and telephone factory for Philips in the 1950s by the modernist architect Dirk Roosenburg. It has about 12,400 sq m of total floor space, largely abandoned but too solid and expensive to knock down. In the Netherlands, 18% of offices are empty, due to the two last economic crises and cuts in the size of government. Dr Hilde Remøy of Delft University of Technology has predicted office vacancy in the Netherlands will soon reach 25%, the highest in Europe. According to Cushman & Wakefield’s global office forecast 2015-16, the European average will be about 10%.

Modern technology has helped make urban farming a viable prospect. At UrbanFarmers, the shimmery tilapia swim in 28 tanks. Baby fish, farmed in nearby Eindhoven, come in on one side, fed by an automated system; across the room are tanks for the bigger fish, which will be killed by electrical stunning. In another vat of water, bacteria convert waste ammonia from fish excrement into nitrates to fertilise the plants on the roof above. Meanwhile, the plants – which are grown without soil – purify the fish water. This closed system, known as aquaponics, has been used for centuries.

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