Review for VOC and odor emissions from the painting industry and their control

Abstract

During painting, volatile organic compounds (VOCs) associated with the paint solvents are emitted into the atmosphere. Most VOC emissions come from spraying operations via the use of solvent-based paints. The VOCs consist of aromatic and aliphatic hydrocarbons, ketones, esters, alcohols, and glycol ethers. Some hydrophilic VOCs are captured and retained in the water, and most of the VOCs are captured by a control system. In this paper, the processes involved in painting and in VOC control are reviewed. The topics include: the overview of VOC emissions in the painting industry, the nature of VOCs, VOC-control processes (adsorption, condensation, oxidation technology, absorption technology), and assessment of control technologies and recommendations for control technology suitable to the technical and economic conditions of Vietnam.