I D
× COMMENTARYCOVER STORYIN THE NEWSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGENGINEERING PRACTICEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUS
Focus on Valves
    A new motorized control valve for the semiconductor…
NEW PRODUCTS + Show More

Comment PDF Processing & Handling

A new support for biofilters

By Chemical Engineering |

Researchers from the Environmental Biotechnology Cooperative Research Center (Sydney and Perth, Australia; www.ebcrc.com.au) have developed a new way to harness bacteria to biodegrade odor-causing substances. Traditional biofilters typically employ compost supported on wood chips to trap the odor-producing substances, and rely on micro-organisms in the compost to break down those substances. The center’s executive director, David Garman, says that “while bacteria can deal with a wide range of odors, their unreliability, poor viability and poor performance in normal biofilter systems mean that often operators prefer to use simpler chemical systems. Some of these systems are effective at masking the odors but do not remove or break them down.” The center’s new technology replaces the compost and wood chips by a non-biodegradable matrix that also acts as an adsorbent. A naturally occurring zeolite is used for that purpose. The electrically charged surface of the zeolite and the internally porous crystalline structure of regularly spaced cavities provide large surface area and molecular sieve properties. According to the researchers, those properties make zeolite a filter bed material capable of adsorbing odors,…
Related Content
Bio-based adipic acid
Adipic acid is a dicarboxylic acid that is widely applied to the production of nylon, polyurethanes, plasticizers and other polymers.…
More than beer is brewing
This year, the recipient of the Othmer Gold Medal is Kiran Mazumdar-Shaw, chairman and managing director of Biocon Ltd. (Bangalore,…
The Biogas Boom
It probably isn’t going to solve all the world’s energy needs, but producing biogas from waste can help slash the…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Metering gas in biogas plants
Wet process analyzer for FPD and solar cell manufacturing for semi-conductors
Fluidized bed drying and cooling for temperature-sensitive polymers and plastics
CoriolisMaster: The SmartSensor solution
The Big 6 flowmeter technologies: Where to use them and why

View More