Biofiltration of n-hexane in the presence of benzene vapors

被引:47
作者
Hassan, Ashraf Aly [1 ]
Sorial, George A. [1 ]
机构
[1] Univ Cincinnati, Dept Civil & Environm Engn, Cincinnati, OH 45221 USA
基金
美国国家科学基金会;
关键词
trickle bed air biofilter; volatile organic compound; n-hexane; benzene; mixture hydrophobic compound; bacteria; fungi; BED AIR BIOFILTER; SIMULTANEOUS BIODEGRADATION; P-XYLENE; PERFORMANCE; REMOVAL; TOLUENE; BIOREACTOR; MIXTURES;
D O I
10.1002/jctb.2330
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
BACKGROUND: Degrading hydrophobic volatile organic compounds in biofilters is very challenging. Previous research in our laboratories examined the degradation of hydrophobic contaminants by several methods including changing the empty bed resident time, utilization of surfactants and change of the microorganism consortium. As n-hexane is considered relatively soluble in benzene and alongside benzene is more soluble in water, it was anticipated that a mixture of both volatile organic compounds fed to a trickle bed air biofilters (TBABs) would lead to an improved performance of n-hexane degradation. RESULTS: The ratio of benzene:n-hexane studied was 2 : 1 by volume, corresponding to a concentration ratio of 3 : 1, respectively. The TBAB was operated at pH 4 to provide favorable conditions for fungi growth. The effects of changing loading rates ranging from 20 to 80 g m(-3) h(-1) on the biofilter performance, acclimation period, and removal profile along biofilter depth, nitrogen consumption and CO2 production were studied under continuous loading operation conditions and compared to previous data of TBABs degrading single feed of benzene and n-hexane separately. CONCLUSIONS: Results have shown that the degradation of n-hexane is significantly impacted by the presence of benzene; however, the degradation of benzene was not impacted to the same extent as n-hexane. (C) 2010 Society of Chemical Industry
引用
收藏
页码:371 / 377
页数:7
相关论文
共 50 条
  • [21] Selective Separation of Benzene/n-Hexane with Ester-Functionalized Ionic Liquids
    Ren, Zhongqi
    Wang, Mengyao
    Li, Yong
    Zhou, Zhiyong
    Zhang, Fan
    Liu, Wei
    [J]. ENERGY & FUELS, 2017, 31 (06) : 6598 - 6606
  • [22] Method for the simultaneous quantification of n-hexane metabolites: Application to n-hexane metabolism determination
    Soriano, T
    Menendez, M
    Sanz, P
    Repetto, M
    [J]. HUMAN & EXPERIMENTAL TOXICOLOGY, 1996, 15 (06): : 497 - 503
  • [23] Absorption and recovery of n-hexane in aqueous solutions of fluorocarbon surfactants
    Xiao, Xiao
    Yan, Bo
    Fu, Jiamo
    Xiao, Xianming
    [J]. JOURNAL OF ENVIRONMENTAL SCIENCES, 2015, 37 : 163 - 171
  • [24] Biofiltration performance and characteristics of high-temperature gaseous benzene, hexane and toluene
    Hu, Qing-yuan
    Wang, Can
    Huang, Kai-xin
    [J]. CHEMICAL ENGINEERING JOURNAL, 2015, 279 : 689 - 695
  • [25] Isomerization of n-Hexane in the Presence of Titanium Dioxide-Supported Catalysts
    Guseinova, E. A.
    Salaev, M. R.
    Alieva, N. T.
    Adzhamov, K. Yu.
    [J]. CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS, 2018, 54 (02) : 132 - 139
  • [26] Treatment of dynamic mixture of hexane and benzene vapors in a Trickle Bed Air Biofilter integrated with cyclic adsorption/desorption beds
    Hassan, Ashraf Aly
    Sorial, George A.
    [J]. CHEMOSPHERE, 2011, 82 (04) : 521 - 528
  • [27] Occupational ototoxicity of n-hexane
    Vyskocil, A.
    Leroux, T.
    Truchon, G.
    Gendron, M.
    El Majidi, N.
    Viau, C.
    [J]. HUMAN & EXPERIMENTAL TOXICOLOGY, 2008, 27 (06) : 471 - 476
  • [28] Thermodynamics of (anisole plus benzene, or toluene, or n-hexane, or cyclohexane, or 1-butanol, or 1-pentanol) at T=298.15 K
    Orge, B
    Marino, G
    Iglesias, M
    Tojo, J
    Piñeiro, MM
    [J]. JOURNAL OF CHEMICAL THERMODYNAMICS, 2000, 32 (05) : 617 - 629
  • [29] Coadsorption of n-Hexane and Benzene Vapors onto the Chromium Terephthalate-Based Porous Material MIL-101(Cr) An Experimental and Computational Study
    Trens, Philippe
    Belarbi, Hichem
    Shepherd, Celine
    Gonzalez, Philippe
    Ramsahye, Naseem A.
    Lee, U-Hwang
    Seo, You-Kyong
    Chang, Jong-San
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (49) : 25824 - 25831
  • [30] Catalytic activity of Pt catalysts promoted by MnOx for n-hexane oxidation
    Anic, Mirjana
    Radic, Nenad
    Grbic, Bosko
    Dondur, Vera
    Damjanovic, Ljiljana
    Stoychev, Dimitar
    Stefanov, Plamen
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 107 (3-4) : 327 - 332