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Article: VOC and HAP removal from dryer exhaust gas by absorption into ionic liquids.(volatile organic compounds)(hazardous air pollutants)
- Article from:
- Forest Products Journal
- Article date:
- May 1, 2007
- Author:
CopyrightCOPYRIGHT 2007 Forest Products Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
Currently, thermal oxidizers are commonly used to reduce emissions from dryers and presses at forest products facilities. These consume large quantities of natural gas and are expensive to operate. As an alternative, we developed and tested a lab-scale absorption system using a room temperature ionic liquid, tetradecy(trihexyl)phosphonium dicyanamide, as the absorbant. Tests were conducted on simulated exhaust containing only methanol and [alpha]-pinene, kiln dryer exhaust, and veneer dryer exhaust. Methanol, [alpha]-pinene, and formaldehyde were successfully removed from the exhaust. The total hydrocarbon reduction was 73 to 78 percent.
During ...
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