Biodegradation Kinetics and Effects of Operating Parameters on the Performance of a Methyl Tert-Butyl Ether Degrading Biofilter

Chiu, Yi-Cheng; Lin, Chi‐Wen; Kao, Tsang-Chih; Tang, Xiaoyan

doi:10.1007/s11270-006-9181-3

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…S-3b). Indeed, an increase in EBRT, giving rise to a longer contact time between the contaminated air and the biofilm on the packing material, is known to give a higher value for r m 16,27,28 . If these r m values are compared with previous studies, see Table 4, it appears that the macadamia nutshells as packing material perform similarly to the best carriers used in comparable studies.…”

Section: Biodegradation Kineticsmentioning

confidence: 99%

“…To illustrate the effect of temperature variation in the mesophilic range on the reactor performance, the biofilter was also operated at temperatures ranging from 292 to 313 K. To measure the biofilter activity over the reactor depth, the biofilter was designed with several axial sampling ports, so an axial concentration profile through the reactor could be recorded. An important trend in biofiltration is to determine the biokinetic parameters using existing models, as these parameters may differ considerably from those found in the literature depending on the experimental conditions under which the parameters were obtained.…”

Section: Introductionmentioning

confidence: 99%

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Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Volckaert

Álvarez‐Hornos

Heynderickx

et al. 2012

J of Chemical Tech & Biotech

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BACKGROUND Biofilters are suitable to treat industrial emissions polluted with volatile organic compounds (VOCs), responsible for photochemical smog and depletion of the ozone layer. This study analyzes the performance of a biofilter with Macadamia ternifolia nutshells as a carrier material treating air streams contaminated with ethylbenzene under mesophilic conditions with continuous feeding. RESULTS The biofilter was operated continuously for 5 months applying several inlet loads (IL), empty bed residence times (EBRT) and temperatures. At a temperature of 303 ± 1 K removal efficiencies (RE) higher than 90% were obtained for ILs lower than 85.6 g m−3 h−1 and 70.6 g m−3 h−1 at an EBRT of 150 and 90 s. The yield coefficient resulted in 0.73 g of dry biomass formed per g of ethylbenzene degraded. Michaelis–Mentens half saturation parameter Km and maximum volumetric elimination rate rm were calculated for EBRT of 90 s, Km = 0.28 ± 0.09 g m−3 and rm = 89 ± 11 g m−3 h−1, and 150 s, Km = 0.72 ± 0.18 g m−3 and rm = 117 ± 15 g m−3 h−1. CONCLUSIONS The experimental data shows that a biofilter with Macadamia ternifolia nutshells (waste material in Thailand) as a carrier material is a good option for air treatment in tropical areas with typical temperatures varying from 292 to 313 K, using ethylbenzene as a test substrate. Copyright © 2012 Society of Chemical Industry

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Section: Biodegradation Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Volckaert

Álvarez‐Hornos

Heynderickx

et al. 2012

J of Chemical Tech & Biotech

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“…The prevalent use of methyl tert-butyl ether (MTBE) in reformulated fuel to further reduce emissions of carbon monoxide and other smog-related air pollutants has led to its introduction into groundwater from spills and leaky underground storage tanks (Baehr et al 1999;Klinger et al 2002;Chiu et al 2006;Dong et al 2007;Zhong et al 2007 ). In the USA, Landmeyer et al (2001) tested all of the wells adjacent to an MTBE storage tank and found MTBE to be present at the milligram per liter level, with even concentrations >10 mg/L MTBE being found.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of Methyl Tert-butyl Ether in a Bioreactor using Immobilized Methylibium petroleiphilum PM1 Cells

Cheng

Chen

et al. 2010

Water Air Soil Pollut

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Methylibium petroleiphilum PM1, which is capable of degrading of methyl tert-butyl ether (MTBE), was immobilized in calcium alginate gel beads. Various applications were explored to increase the mechanical strength of these gel beads. The introduction of 0.3 mol/L calcium chloride into the crosslinking solution, 0.002 mol/L calcium chloride into the growth medium, and 0.2% polyethyleneimine (PEI) as chemical crosslinking agent increased the stability of the Ca-alginate gel beads under the operation conditions of the bioreactor. The degradation rates of MTBE by the immobilized cells in the bioreactor system operated in batch and continuous mode , respectively, were compared. A MTBE biodegradation rate of 5.79 mg/L·h was reached for over 400 h (50 batches), and the immobilized cells in the bioreactor removed >96% MTBE during 50 days of operation. Molecular analysis of the PM1 cells revealed that microbial growth occurred predominantly as microcolonies in the outer area of the beads during the first 20 days of operation. The results of this study show that a continuous-mode, fixed-bed bioreactor reactor coupled with PM1-immobilized cells is a promising technology for remediating MTBE-contaminated groundwater.

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Biotreatment of phenol-contaminated wastewater in a spiral packed-bed bioreactor

Lin

Yen

Tsai

2008

Bioprocess Biosyst Eng

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A spiral packed-bed bioreactor inoculated with microorganisms obtained from activated sludge was used to conduct a feasibility study for phenol removal. The reactor was operated continuously at various phenol loadings ranging from 53 to 201.4 g m(-3) h(-1), and at different hydraulic retention times (HRT) in the range of 20-180 min to estimate the performance of the device. The results indicated that phenol removal efficiency ranging from 82.9 to 100% can be reached when the reactor is operated at an HRT of 1 h and a phenol loading of less than 111.9 g m(-3) h(-1). At an influent phenol concentration of 201.4 g m(-3), the removal efficiency increased from 18.6 to 76.9% with an increase in the HRT (20-120 min). For treatment of phenol in the reactor, the maximum biodegradation rate (V (m)) was 1.82 mg l(-1) min(-1); the half-saturation constant (K (s)), 34.95 mg l(-1).

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Biodegradation Kinetics and Effects of Operating Parameters on the Performance of a Methyl Tert-Butyl Ether Degrading Biofilter

Cited by 6 publications

References 14 publications

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Ethylbenzene removal under mesophilic conditions in a biofilter with Macadamia ternifolia nutshells as a carrier material

Biodegradation of Methyl Tert-butyl Ether in a Bioreactor using Immobilized Methylibium petroleiphilum PM1 Cells

Biotreatment of phenol-contaminated wastewater in a spiral packed-bed bioreactor

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