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Photolysis of gaseous butyl acetate using built-in microwave discharge electrodeless lamps.

Journal of hazardous materials (2010-12-15)
YongJun Zhao, Qi Chen, Huiqi Hou, Jian He
ABSTRACT

This paper examined the photolysis of gaseous butyl acetate by built-in microwave discharge electrodeless lamps. Bromine and iodine lamps were used to investigate the effects of microwave input power, inlet concentration, gas residence time, and different filling materials on butyl acetate decomposition and energy yield. Water vapor and ammonia were utilized as additional chemicals to determine if they can improve removal efficiency. Built-in structure and external structure were also compared. When the gas flow velocity is 0.025 m/s, and the inlet concentration is 1.5 mg/m(3), the removal efficiency of butyl acetate can reach over 78%, which is the highest in this study. Additional water vapor and ammonia can hardly improve the degradation. To some extent, built-in MDELs are better than external MDELs. The results will help promote the study of microwave discharge electrodeless lamps and their effect on the degradation of gaseous pollutants. Maybe, as the research goes on, it could realize the span from laboratory scale to practical application, and will become an advanced technology for the gaseous pollutants control.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Butyl acetate, anhydrous, ≥99%
Sigma-Aldrich
Butyl acetate, ACS reagent, ≥99.5%
Sigma-Aldrich
Butyl acetate, suitable for HPLC, 99.7%
Supelco
Butyl acetate, analytical standard
Sigma-Aldrich
Butyl acetate, natural, ≥98%, FG
Sigma-Aldrich
Butyl acetate, ≥99%, FCC, FG
Sigma-Aldrich
Butyl acetate, ReagentPlus®, 99.5%
Supelco
Butyl acetate, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Butyl acetate, puriss. p.a., ACS reagent