Featured Research

from universities, journals, and other organizations

Engineers Develop Odour Eaters For Pulp Mills

Date:
January 23, 2002
Source:
University Of Toronto
Summary:
Drive by a pulp and paper mill and one of the first things you'll almost certainly notice is the unmistakable smell. But give a University of Toronto engineering professor his way and you'll find the only thing assaulting your nose is … nothing.

Drive by a pulp and paper mill and one of the first things you'll almost certainly notice is the unmistakable smell. But give a University of Toronto engineering professor his way and you'll find the only thing assaulting your nose is … nothing.

Professor Grant Allen, director of U of T's Pulp and Paper Centre in the chemical engineering department, is researching biofiltration techniques that use bacteria to "eat" air pollutant byproducts from the pulp process and thereby filter out the smell. "All industrial processes have air emissions and, in the case of pulp and paper mills, the smell can be quite overwhelming. This biofilter operates like a mini ecosystem. It's a microbial community that degrades the pollutant and breaks down the compounds which cause the odour."

The filter - composed of a variety of materials such as wood chips or plastic spheres - is placed at the exit gas stream at the end of the manufacturing process before the sulphur compounds are released into the air. The sulphur compounds are food sources for the bacteria and, as the bacteria eat them, they also eat the smell.

In a paper published in Environmental Science and Technology last fall, Allen and his co-researchers explain how they managed to create a biofilter that operates in temperatures as high as 70 C. Most biofilters currently in use operate at 35 C or lower, making them prohibitively expensive to install for pulp and paper mills whose gas streams range from 50 to 70 C. With a biofilter that treats the gas stream and its pollutants at higher temperatures, the process is far easier and more cost-effective.

The application of this technology goes beyond pulp and paper, Allen says. It can be used in any industry that produces biodegradable air pollutants and is low cost, low maintenance and environmentally friendly.


Story Source:

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


Cite This Page:

University Of Toronto. "Engineers Develop Odour Eaters For Pulp Mills." ScienceDaily. ScienceDaily, 23 January 2002. <www.sciencedaily.com/releases/2002/01/020123080138.htm>.
University Of Toronto. (2002, January 23). Engineers Develop Odour Eaters For Pulp Mills. ScienceDaily. Retrieved August 29, 2014 from www.sciencedaily.com/releases/2002/01/020123080138.htm
University Of Toronto. "Engineers Develop Odour Eaters For Pulp Mills." ScienceDaily. www.sciencedaily.com/releases/2002/01/020123080138.htm (accessed August 29, 2014).

Share This




More Plants & Animals News

Friday, August 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Raw: Australian Sheep Gets Long Overdue Haircut

Raw: Australian Sheep Gets Long Overdue Haircut

AP (Aug. 28, 2014) Hoping to break the record for world's wooliest, Shaun the sheep came up 10 pounds shy with his fleece weighing over 50 pounds after being shorn for the first time in years. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Minds Blown: Scientists Develop Fish That Walk On Land

Minds Blown: Scientists Develop Fish That Walk On Land

Newsy (Aug. 28, 2014) Canadian scientists looking into the very first land animals took a fish out of water and forced it to walk. Video provided by Newsy
Powered by NewsLook.com
Huge Ancient Wine Cellar Found In Israel

Huge Ancient Wine Cellar Found In Israel

Newsy (Aug. 28, 2014) An international team uncovered a large ancient wine celler that likely belonged to a Cannonite ruler. Video provided by Newsy
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