Hamburg (DAPD-nrd). The idea to horse manure to study as a potential energy source, Oldenburg Saskia died in a barn conversation. "We've talked about my research and a riding colleague asked me about the potential use of horse manure," recalls the 28-year-old. Actually graduated as an engineer for energy and environmental engineering at the Technical University Hamburg-Harburg (TUHH) about the utilization of organic waste in biogas plants. After a first analysis of potential stable judgment of PhD student: Horse manure can also be used for power and heat generation.
In Germany there are, according to the Federal Environment Ministry, about 900,000 horses which annually produce up to 14.5 million metric crap. Only a small proportion of this is used as a fertilizer in agriculture. Difficulty is feeding into biogas plants, as opposed to manure from pigs and cattle, but not. "As the horse manure we call the entire contents of a box, so uneaten food, straw, sand, manure and urine," said Oldenburg.
Just long straw and sand can damage the system technology. In order to make use of horse manure, the 28-year-old working on a separation module that could be preceded by the existing facilities. "Due to a water circulation and a sand trap we separate the manure of the confounders. The filtered straw is also crushed and fed into the biogas plant," says the engineer. A process which would include filtering also other animal manure, even a use for zoos were possible.
10,000 euros to the construction of the prototype cost. Instead of having to write a third-party application to Oldenburg chose an unusual path of science funding - for the so-called crowdfunding. Translated, the financing by the mass. Supporters can donate on the website for the horse manure www.sciencestarter.de project, the sum is arbitrary. "I think that our plan is meaningful and tangible enough to convince people to make donations," says Oldenburg. On this support, the researcher is also dependent. Crowdfunding works namely after the "all-or-nothing" principle.
Join the 10,000 euros to run their campaign on 20 February not together, there is not a cent for the prototype. On a failure to Oldenburg makes little thought: "I have no plan B concocted from the development could eventually horse owners and operators of biogas plants alike.." A larger horse farm currently pays for up to 1,000 euros per month for the disposal of manure.
Disposal concepts are scarce, and the usability in agriculture is very limited. Also exclusively on horse manure biogas plants specialized, there are currently only two in Germany.
Use in accordance with the federal Ministry of the Environment is currently nearly 6,000 biogas plants would be a clear discharge. Plant operators simultaneously a new substrate would be available that is produced reliably and inexpensively. But the environment could benefit: A quick disposal of greenhouse gases are reduced. Moreover, could the growing of controversial energy crops such as maize are reduced to 25 percent.
Currently, these make up the largest share next to manure used in biogas plants of raw materials. Unlike waste consumes their acreage, which could otherwise be used for food production.
"2.5 tons of horse manure has about according to our calculations, the energy potential of a ton of corn. Conceivability For better I always say, a handful of horse manure is enough for a phone charge," explains the researcher. Exactly the way, gets everybody that has donated 25 Euros for the charity. "For this price, it is a tour of our laboratory, and even if you bring 100 grams of horse manure, which we load on his cell phone," she says.
For 500 euros there was even a horse apple acrylic. Should be sufficient to attract financing, the scientists already in the summer of 2013, presenting a finished prototype.
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