PMID- 22516522
OWN - NLM
STAT- MEDLINE
DCOM- 20120802
LR  - 20131121
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 219-220
DP  - 2012 Jun 15
TI  - Effect of methanol on the biofiltration of n-hexane.
PG  - 176-82
LID - 10.1016/j.jhazmat.2012.03.075 [doi]
AB  - This study investigated the removal of recalcitrant compounds in the presence of 
      a hydrophilic compound. n-Hexane is used as a model compound to represent 
      hydrophobic compounds. Methanol has been introduced in mixture with n-hexane in 
      order to increase the bioavailability of n-hexane in trickle-bed-air-biofilters 
      (TBABs). The mixing ratios investigated were: 70% methanol:30% n-hexane, and 80% 
      methanol:20% n-hexane by volume. n-Hexane loading rates (LRs) ranged from 0.9 to 
      13.2 g m(-3) h(-1). Methanol LRs varied from 4.6 to 64.5 g m(-3) h(-1) and from 
      2.3 to 45.2 g m(-3) h(-1) depending upon the mixing ratio used. Biofilter 
      performance, effect of mixing ratios of methanol to n-hexane, removal profile 
      along biofilter depth, COD/nitrogen consumption and CO(2) production were studied 
      under continuous loading operation conditions. Results have shown that the 
      degradation of n-hexane is significantly enhanced by the presence of methanol for 
      n-hexane LRs less than 13.2 g m(-3) h(-1). For n-hexane LR greater than 13.2 g 
      m(-3) h(-1), even though methanol had impacted n-hexane biodegradation, its 
      removal efficiency was higher than our previous study for biodegradation of 
      n-hexane alone, in presence of surfactant, or in presence of benzene. On the 
      other hand, the degradation of methanol was not impacted by the presence of 
      n-hexane.
CI  - Copyright (c) 2012 Elsevier B.V. All rights reserved.
FAU - Zehraoui, Abderrahman
AU  - Zehraoui A
AD  - School of Energy, Environmental, Biological and Medical Engineering, College of 
      Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 
      45221-0012, USA. zehraoan@mail.uc.edu
FAU - Hassan, Ashraf Aly
AU  - Hassan AA
FAU - Sorial, George A
AU  - Sorial GA
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20120404
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Hexanes)
RN  - 0 (Volatile Organic Compounds)
RN  - 2DDG612ED8 (n-hexane)
RN  - N762921K75 (Nitrogen)
RN  - Y4S76JWI15 (Methanol)
SB  - IM
MH  - Biodegradation, Environmental
MH  - Chromatography, Gas
MH  - Filtration/*methods
MH  - Hexanes/*isolation & purification
MH  - Methanol/*chemistry
MH  - Nitrogen/chemistry
MH  - Volatile Organic Compounds/isolation & purification
EDAT- 2012/04/21 06:00
MHDA- 2012/08/03 06:00
CRDT- 2012/04/21 06:00
PHST- 2012/01/18 00:00 [received]
PHST- 2012/03/26 00:00 [revised]
PHST- 2012/03/28 00:00 [accepted]
PHST- 2012/04/21 06:00 [entrez]
PHST- 2012/04/21 06:00 [pubmed]
PHST- 2012/08/03 06:00 [medline]
AID - S0304-3894(12)00369-X [pii]
AID - 10.1016/j.jhazmat.2012.03.075 [doi]
PST - ppublish
SO  - J Hazard Mater. 2012 Jun 15;219-220:176-82. doi: 10.1016/j.jhazmat.2012.03.075. 
      Epub 2012 Apr 4.