VOC removal and deodorization of effluent gases from an industrial plant by photo-oxidation, chemical oxidation, and ozonization.
The efficiency of photo-oxidation, chemical oxidation by sodium hypochlorite, and ozonization for the industrial-scale removal of volatile organic compounds (VOCs) and odors from gaseous emissions was studied by applying these treatments (in an experimental system) to substances passing through an emission stack of a factory producing maize derivatives. Absorption and ozonization were the most efficient treatment, removing 75% and 98% of VOCs, respectively, while photo-oxidation only removed about 59%. The emitted chemical compounds and odors were identified and quantified by gas chromatography-mass spectrometry (in full-scan mode). In addition to presenting the results, their implications for selecting optimal processes for treating volatile emissions are discussed.
Domeño
Celia
C
Department of Analytical Chemistry, I3A, CPS-University of Zaragoza, Maria de Luna st. 3, Torres Quevedo Building, Zaragoza, Spain.
Rodríguez-Lafuente
Angel
A
Martos
J M
JM
Bilbao
Rafael
R
Nerín
Cristina
C
D000042:Absorption; D002138:Calibration; D052918:Environmental Restoration and Remediation / Q000295:instrumentation / Q000379:methods*; D005740:Gases / Q000032:analysis* / Q000737:chemistry; D007220:Industrial Waste / Q000032:analysis*; D008027:Light; D009812:Odorants / Q000032:analysis*; D010084:Oxidation-Reduction / Q000528:radiation effects; D010126:Ozone / Q000737:chemistry*; D012015:Reference Standards; D012972:Sodium Hydroxide / Q000737:chemistry; D012973:Sodium Hypochlorite / Q000737:chemistry; D055549:Volatile Organic Compounds / Q000302:isolation & purification*; D014867:Water
D005740:Gases; D007220:Industrial Waste; D055549:Volatile Organic Compounds; D014867:Water; D012972:Sodium Hydroxide; D010126:Ozone; D012973:Sodium Hypochlorite