The Removal of VOC from Off-gas by Biofiltration Process

Abstract

The objective of this article is to introduce a biofiltration technique, for off-gas treatment, to the reader. Biofiltration is a process which utilizes to remove odor or volatile organic compound (VOC in wasted-gas. This process is basically removal the VOCs or organic gases by oxidation of these substances from contaminated air by beds of compost or soil, where in microorganism oxidize organic compound to CO₂ and H₂O which are harmless to the environment. In addition, the operation and maintenance cost to biofiltration process is much cheaper comparing to the other existing method of air toxic treatment. Recently air emission of VOCs are subject of increasingly stringent environmental regulation, VOCs contaminated airstream must be treated to reach an acceptable level before releasing to the atmosphere. Therefore biofiltration technique is a promising option for VOC treatment in this decade.