| Title: | Bio-oxidation of airborne volatile organic compounds in an activated sludge aeration tank |
| Address: | "Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, Republic of China. ms.chou@msa.hinet.net" |
| DOI: | 10.1080/10473289.2005.10464645 |
| ISSN/ISBN: | 1096-2247 (Print) 1096-2247 (Linking) |
| Abstract: | "An activated sludge aeration tank (40 x 40 x 300 cm, width x length x height) with a set of 2-mm orifice air spargers was used to treat gas-borne volatile organic compounds (VOCs; toluene, p-xylene, and dichloromethane) in air streams. The effects of liquid depth (Z), aeration intensity (G/A), the overall mass-transfer rate of oxygen in clean water (KLaO2), the Henry's law constant of the tested VOC (H), and the influent gaseous VOC concentration (C0) on the efficiency of removal of VOCs were examined and compared with a literature-cited model. Results show that the measured VOC removal efficiencies and those predicted by the model were comparable at a G/A of 3.75-11.25 m3/m2 hr and C0 of approximately 1000-6000 mg/m3. Experimental data also indicated that the designed gas treatment reactor with KLaO2 = 5-15 hr(-l) could achieve > 85% removal of VOCs with H = 0.24-0.25 at an aerated liquid depth of 1 m and > 95% removal of dichloromethane with H = 0.13 at a 1-m liquid depth" |
| Keywords: | Air Pollution/*prevention & control Bioreactors Methylene Chloride/chemistry/*isolation & purification Oxidation-Reduction Toluene/chemistry/*isolation & purification Volatilization Xylenes/chemistry/*isolation & purification; |
| Notes: | "MedlineChou, Ming-Shean Chang, Hsiao-Yu eng 2005/07/05 J Air Waste Manag Assoc. 2005 May; 55(5):604-11. doi: 10.1080/10473289.2005.10464645" |
