Featured Research

from universities, journals, and other organizations

New 'Digester' Converts Garbage To Energy

Date:
October 12, 2004
Source:
University Of California Davis
Summary:
UC Davis bioenvironmental engineer Ruihong Zhang sees a vast untapped resource in lawn clippings, household table scraps and other biodegradable materials: enough energy to keep the lights burning in thousands of California homes, high-quality soil amendments for the landscape industry, even fiberboard for construction purposes.

More than 14 million tons of high-moisture, organic waste are generated in California each year. Some of it is composted, but too much finds its way into landfills. UC Davis bioenvironmental engineer Ruihong Zhang sees a vast untapped resource in those lawn clippings, household table scraps and other biodegradable materials: enough energy to keep the lights burning in thousands of California homes, high-quality soil amendments for the landscape industry, even fiberboard for construction purposes.

One promising key to unlocking this potential is currently under study at UC Davis. Zhang is building a prototypical anaerobic digester, part of a $4 million project funded by the California Energy Commission and industry partners. The concept is elegantly simple -- garbage in, good stuff out, including "biogas" to burn for electricity-producing turbines.

Previous biological conversion systems have failed because they required that the waste be ground up, which canceled the energy-production benefits. Zhang's anaerobic digester should be better because, she said, it is designed to process waste materials in their "natural" form, easing material handling and converting the material into biogas at a faster rate.

The prototype digester at UC Davis should be fired up this fall. It will consume about three tons of organic waste per day, delivered from collection facilities in Dixon and San Francisco. It will generate about 600 kilowatt-hours of electricity per day, enough to meet the needs of 15 typical California homes. The energy will go to the campus power supply.


Story Source:

The above story is based on materials provided by University Of California Davis. Note: Materials may be edited for content and length.


Cite This Page:

University Of California Davis. "New 'Digester' Converts Garbage To Energy." ScienceDaily. ScienceDaily, 12 October 2004. <www.sciencedaily.com/releases/2004/10/041012093158.htm>.
University Of California Davis. (2004, October 12). New 'Digester' Converts Garbage To Energy. ScienceDaily. Retrieved September 21, 2014 from www.sciencedaily.com/releases/2004/10/041012093158.htm
University Of California Davis. "New 'Digester' Converts Garbage To Energy." ScienceDaily. www.sciencedaily.com/releases/2004/10/041012093158.htm (accessed September 21, 2014).

Share This



More Matter & Energy News

Sunday, September 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

What This MIT Sensor Could Mean For The Future Of Robotics

What This MIT Sensor Could Mean For The Future Of Robotics

Newsy (Sep. 20, 2014) MIT researchers developed a light-based sensor that gives robots 100 times the sensitivity of a human finger, allowing for "unprecedented dexterity." Video provided by Newsy
Powered by NewsLook.com
MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins