Modeling of experimental treatment of acetaldehyde-laden air and phenol-containing water using corona discharge technique.
Acetaldehyde-laden air and phenol-contaminated water were experimentally treated using corona discharge reactions and gas absorption in a single water-film column. Mathematical modeling of the combined treatment was developed in this work. Efficient removal of the gaseous acetaldehyde was achieved while the corona discharge reactions produced short-lived species such as O and O- as well as ozone. Direct contact of the radicals and ions with water was known to produce aqueous OH radical, which contributes to the decomposition of organic contaminants: phenol, absorbed acetaldehyde, and intermediate byproducts in the water. The influence of initial phenol concentration ranging from 15 to 50 mg L(-1) and that of influent acetaldehyde ranging from 0 to 200 ppm were experimentally investigated and used to build the math model. The maximum energetic efficiency of TOC, phenol, and acetaldehyde were obtained at 25.6 x 10(-9) mol carbon J(-1), 25.0 x 10(-9) mol phenol J(-1), and 2.0 x 10(-9) mol acetaldehyde J(-1), respectively. The predictions for the decomposition of acetaldehyde, phenol, and their intermediates were found to be in good agreement with the experimental results.
Center of Excellence in Particle Technology, Department of Chemical Engineering, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand.,
Kajornsak
K
Faungnawakij
Noriaki
N
Sano
Tawatchai
T
Charinpanitkul
Wiwut
W
Tanthapanichakoon
D000079:Acetaldehyde / Q000737:chemistry*; D000388:Air; D007700:Kinetics; D019800:Phenol / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D014867:Water; D019800:Phenol; D000079:Acetaldehyde