Connect with us

Hi, what are you looking for?

CleanTechnica

Uncategorized

The Missing Link: Chains Are a Smart Move for Tyrolean Food Waste Recycler

New food waste shredder uses chains to boost efficiency.If the experience of one Tyrolean farm in the village of Schlitters, Austria is any indication, food waste recycling is in for a big step up.  The farm just added a biogas plant to its operations, using a new design that can boost methane yields from biogas by 30%.  The secret?  That’s where the missing link comes in.

Food Waste Recycling Starts with a Good Shredding

The farm takes in agricultural waste from around the area, restaurant waste from the tourist industry, and packaged foods that have passed their expiration date.  To handle the mixed food waste, it installed recycling machinery produced by the German company MeWa Recycling, called the Querstromzerspaner, or QZ for short.  Conventional shredding blades are not ideal for mixed food waste, because it contains packaging materials, misplaced cutlery and other non-organic items.  The QZ uses chains to mash the waste instead of slicing it.

Chains Beat Blades for Biogas, Too

The mashing action of the chains has a second benefit, even more important than the first.  Mashed food has a much greater surface area than sliced food, so it provides a more efficient environment for bacteria in biogas production.  According to the manufacturer, the methane gas yield was 30% higher in a conventional blade shredder after it was retrofitted with chains.

Beyond Food Waste Recycling

Composting and biogas production relieve landfills and incinerators from a shocking amount of usable waste.  It’s important to keep in mind, though, that food waste recycling is only the front end of a bigger problem: the scale of overproduction that permits some countries to throw out a significant proportion of their food supply, and the consequent effect on water supply.

Image: Clearly Ambiguous at flickr.

 

Advertisement
 
Appreciate CleanTechnica’s originality? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
 
Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.

Written By

Tina specializes in military and corporate sustainability, advanced technology, emerging materials, biofuels, and water and wastewater issues. Views expressed are her own. Follow her on Twitter @TinaMCasey and Google+.

Comments

You May Also Like

Climate Change

As the world works to lower greenhouse gas emissions to avoid the worst impacts of climate change, there is one super pollutant that is...

Climate Change

Climate change solutions for consumers typically are held to be home solar power systems, energy storage systems, electric vehicles or hybrid gas-electric vehicles, energy-efficient...

Agriculture

Not only will good food management bring benefits to your wallet and your health; it is also a weapon in the fight to slow...

Green Economy

Benjamin Schulz: Zack, you’ve been investing in cleantech a long time, and if you look back, what change have you seen between then and...

Copyright © 2021 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.