Featured Research

from universities, journals, and other organizations

New Technology Cuts Industrial Odors, Pollutants

Date:
August 27, 2009
Source:
North Carolina State University
Summary:
Scientists have devised a new technology that could be the key to eliminating foul odors and air pollutants emitted by industrial chicken rendering facilities and -- ultimately -- large-scale swine feedlots.

A North Carolina State University researcher has devised a new technology that really does not stink. In fact, it could be the key to eliminating foul odors and air pollutants emitted by industrial chicken rendering facilities and – ultimately – large-scale swine feedlots.

Dr. Praveen Kolar, assistant professor of biological and agricultural engineering at NC State, has developed an inexpensive treatment process that significantly mitigates odors from poultry rendering operations. Rendering facilities take animal byproducts (e.g., skin, bones, feathers) and process them into useful products such as fertilizer. However, the rendering process produces extremely foul odors.

These emissions are not currently regulated by the government, but the smell can be extremely disruptive to a facility's community. The industry currently uses chemical "scrubbers" to remove odor-causing agents, but this technique is not very effective, Kolar says. Furthermore, some of the odor-causing compounds are aldehydes, which can combine with other atmospheric compounds to form ozone – triggering asthma attacks and causing other adverse respiratory health effects.

Kolar, working with his co-author Dr. James Kastner at the University of Georgia, has designed an effective filtration system that takes advantage of catalytic oxidation to remove these odor-causing pollutants. Specifically, the researchers use ozone and specially-designed catalysts to break down the odor-causing compounds. This process takes place at room temperature, so there are no energy costs, and results in only two byproducts: carbon dioxide and pure water.

The researchers developed the catalysts by coating structures made of activated carbon with a nanoscale film made of cobalt or nickel oxides, Kolar says. "We used activated carbon because its porous structure gives it an extremely large surface area," Kolar explains, "meaning that there is more area that can be exposed to the odorous agents." The cobalt and nickel oxide nanofilms make excellent catalysts, Kolar explains, "because they increase the rate of the chemical reaction between the odor-causing compounds and the ozone, making the process more efficient. They are also metals that are both readily available and relatively inexpensive."

Kolar says his next goal is to apply this research to industrial hog farms. "This technology could be applied to swine operations to address odors and ammonia emissions," Kolar says. "My next step is to try to pursue this research on a large scale."


Story Source:

The above story is based on materials provided by North Carolina State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Room-Temperature Oxidation of Propanal Using Catalysts Synthesized By Electrochemical Deposition. Transactions of the American Society of Agricultural and Biological Engineers, August 2009

Cite This Page:

North Carolina State University. "New Technology Cuts Industrial Odors, Pollutants." ScienceDaily. ScienceDaily, 27 August 2009. <www.sciencedaily.com/releases/2009/08/090826110110.htm>.
North Carolina State University. (2009, August 27). New Technology Cuts Industrial Odors, Pollutants. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2009/08/090826110110.htm
North Carolina State University. "New Technology Cuts Industrial Odors, Pollutants." ScienceDaily. www.sciencedaily.com/releases/2009/08/090826110110.htm (accessed July 23, 2014).

Share This




More Earth & Climate News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Observation Boat to Protect Cetaceans During Ship Transfer

Observation Boat to Protect Cetaceans During Ship Transfer

AFP (July 22, 2014) As part of the 14-ship convoy that will accompany the Costa Concordia from the port of Giglio to the port of Genoa, there will be a boat carrying experts to look out for dolphins and whales from crossing the path of the Concordia. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
New Orleans Plans to Recycle Cigarette Butts

New Orleans Plans to Recycle Cigarette Butts

AP (July 21, 2014) New Orleans is the first U.S. city to participate in a large-scale recycling effort for cigarette butts. The city is rolling out dozens of containers for smokers to use when they discard their butts. (July 21) Video provided by AP
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
Spectacular Lightning Storm Hits London

Spectacular Lightning Storm Hits London

AFP (July 19, 2014) A spectaCular lightning storm struck the UK overnight Friday. Images of lightning strikes over the Shard and Tower Bridge in central London. Duration: 00:23 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