TY - JOUR
T1 - A comparative study for destruction of n-hexane in Trickle Bed Air Biofilters
AU - Aly Hassan, Ashraf
AU - Sorial, George A.
N1 - Funding Information:
The authors would like to thank the financial support from National Science Foundation under award # CBET 0852803. The finding and conclusions expressed in this publication are solely those of the authors and do not necessary reflect the views of the Foundation.
PY - 2010/8
Y1 - 2010/8
N2 - Trickle Bed Air Biofilter (TBAB) could be an attractive treatment option for removal of hydrophobic Volatile Organic Compounds (VOCs) from air streams. In this study, three independent parallel laboratory-scale TBABs were run simultaneously to degrade n-hexane, a hydrophobic VOC known to be difficult to degrade. The loading rate of n-hexane varied from 13.4 and 47.7g/(m3h) (1.14-4.04kg COD/(m3day)).The experimental plan was designed to operate one TBAB at pH 7, another at pH 7 utilizing surfactant for enhancing the solubility of n-hexane, and finally a third one operating at pH 4 to promote fungi growth. Elimination capacities up to 38.7g/(m3h) (3.28kg COD/(m3day)) were observed with a removal efficiency of 90% for the TBAB operating at pH 4. The operating conditions for the TBABs include 120s of Empty Bed Residence Time (EBRT), 1.4L/min air flow rate and fixed temperature of 20°C. Biomass control within the TBAB was investigated through two strategies, namely, stagnation (off flow for 2 days/week) and flow switching.
AB - Trickle Bed Air Biofilter (TBAB) could be an attractive treatment option for removal of hydrophobic Volatile Organic Compounds (VOCs) from air streams. In this study, three independent parallel laboratory-scale TBABs were run simultaneously to degrade n-hexane, a hydrophobic VOC known to be difficult to degrade. The loading rate of n-hexane varied from 13.4 and 47.7g/(m3h) (1.14-4.04kg COD/(m3day)).The experimental plan was designed to operate one TBAB at pH 7, another at pH 7 utilizing surfactant for enhancing the solubility of n-hexane, and finally a third one operating at pH 4 to promote fungi growth. Elimination capacities up to 38.7g/(m3h) (3.28kg COD/(m3day)) were observed with a removal efficiency of 90% for the TBAB operating at pH 4. The operating conditions for the TBABs include 120s of Empty Bed Residence Time (EBRT), 1.4L/min air flow rate and fixed temperature of 20°C. Biomass control within the TBAB was investigated through two strategies, namely, stagnation (off flow for 2 days/week) and flow switching.
KW - Bacteria
KW - Biofiltration
KW - Fungi
KW - Hydrophobic compound
KW - N-Hexane
KW - Trickle Bed Air Biofilter
KW - Volatile Organic Compound
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U2 - 10.1016/j.cej.2010.05.034
DO - 10.1016/j.cej.2010.05.034
M3 - Article
AN - SCOPUS:77954543276
SN - 1385-8947
VL - 162
SP - 227
EP - 233
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 1
ER -