Decomposition of Volatile Organic Compounds by a Packed-Bed Reactor and a Pulsed-Corona Plasma Reactor

Author(s):  
T. Yamamoto ◽  
P. A. Lawless ◽  
M. K. Owen ◽  
D. S. Ensor ◽  
C. Boss
2016 ◽  
Vol 15 (2) ◽  
pp. 269-278 ◽  
Author(s):  
Mohd Ariffin Abu Hassan ◽  
Abdullahi Mohammed Evuti ◽  
Zainura Zainon Noor ◽  
Raja Kamarulzaman Raja Ibrahim

Environments ◽  
2018 ◽  
Vol 5 (11) ◽  
pp. 115
Author(s):  
Yonhara García-Martínez ◽  
Judith Chirinos ◽  
Christophe Bengoa ◽  
Frank Stüber ◽  
Josep Font ◽  
...  

The present work explores the biodegradation of some emerging pollutants (EPs) in an anaerobic slowly-agitated up-flow packed-bed reactor (USPBR) filled with biological activated carbon (BAC). Chlorobenzene (CB) and 2,4-dichlorophenoxyacetic acid (2,4-D) were selected as volatile organic compounds (VOC) and major constituents of many pesticides. Experiments carried out in continuous operation showed that bioconversion up to 90% was achieved for CB and 2,4-D, at space times below 0.6 h and 1.2 h, respectively, at ambient temperature. Overall, removal rates of 0.89 g L−1 d−1 and 0.46 g L−1 d−1 were obtained for CB and 2,4-D, respectively. These results revealed that the degradation of CB and 2,4-D in this anaerobic configuration of bioreactor is an efficient and fast process. The Michaelis–Menten model properly describes the degradation process for CB. Above initial concentrations of 100 mg L−1, 2,4-D presented a considerable inhibitory effect over the biofilm. For this reason, a substrate inhibition factor was included in the Michaelis–Menten equation; the expanded model presented a good fitting to the experimental data, regardless of the inlet concentration. Therefore, USPBR-BAC combination showed to be a highly efficient system for the biodegradation of such compounds.


Author(s):  
G. Prieto ◽  
O. Prieto ◽  
C. R. Gay ◽  
K. Mizuno ◽  
I. Tamori ◽  
...  

AbstractIn search of a technology capable of controlling atmospheric pollutants, like volatile organic compounds (VOCs) in low concentrations, this paper is concerned with the empirical modeling of a ferroelectric plasma packed-bed reactor at ambient temperature and pressure. The empirical model gives information about the decomposition efficiency of the process as a function of the reactor operating variables. The volatile organic compound selected is Carbon Tetrachloride balanced with air in the concentration-range of 150 to 600 ppm and flow-range of 175 to 325 ml/min. Regarding the decomposition efficiency as the objective function, this modeling provides valuable information about the optimal operating conditions.


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