A procedure for production of adapted bacteria to degrade chlorinated aromatics

Seignez, C.; Vuillemin, Aurèle; Adler, N.; Péringer, Paul

doi:10.1016/s0304-3894(01)00235-7

Cited by 21 publications

(23 citation statements)

References 12 publications

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“…To the best of our present knowledge, only a few studies have dealt with the biodegradation of mono-or dichlorobenzenes (CB or DCB) in bioreactors. However, as reported by Seignez et al, 16 biofiltration and biotrickling filters can represent competitive technologies for the aerobic elimination of chlorinated aromatics when they are adequately inoculated. Indeed, the first, Oh and Bartha 17 reported the removal of 1,2-DCB in an aerobic trickling biofilter, inoculated with strains isolated from industrial sludge.…”

Section: Introductionmentioning

confidence: 90%

“…From a general viewpoint, the fact that there are fewer studies focusing on the removal of chlorinated VOC in biological filters can be explained by: (1) chlorinated VOC are more recalcitrant compounds than other VOC, and the range of suitable concentrations is limited, due to their toxicity; 16,22 and (2) investment and operating costs for biological reactors treating chlorinated VOC are higher (∼ $14/1000 m 3 of air) than those required for nonchlorinated VOC (∼ $8/1000 m 3 of air). This difference is related to their biodegradability levels and to the necessary additional process maintenance, such as pH adjustment.…”

Section: Introductionmentioning

confidence: 99%

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Elimination of chlorobenzene vapors from air in a compost‐based biofilter

Delhoménie

Heitz

2003

J of Chemical Tech & Biotech

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Elimination of chlorobenzene vapors from air in a compost‐based biofilter

Delhoménie

Heitz

2003

J of Chemical Tech & Biotech

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“…During the degradation of VOC by biofiltration, microorganisms were identified such as Pseudomonas sp. for the degradation of benzene (Sene et al 2002), chlorobenzene (Seignez et al 2001), and toluene (Park et al 2002), Hyphomicrobium sp. for the degradation of dichloromethane (Diks et al 1994), C. sphaerospermum for the degradation of styrene (Qi et al 2002), and Acinetobacter sp.…”

Section: Predominant Microorganisms Involved In the Degradation Of Fomentioning

confidence: 99%

Formaldehyde Removal from Airstreams Using a Biofilter with a Mixture of Compost and Woodchips Medium

Rezaei

Fazlzadeh

Hajizadeh

2014

Water Air Soil Pollut

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The performance of a laboratory-scale biofilter packed with a mixture of compost and woodchip on formaldehyde removal from polluted air streams was investigated. The reactor was inoculated with aerobic sludge as a source of bacteria, obtained from a municipal wastewater treatment plant. A nutrient solution was daily added to the reactor media. An airflow containing different concentrations of formaldehyde (from 20±2 to 276± 5 mg m −3 ) was introduced into the reactor. In inlet formaldehyde concentration, an average removal efficiency and elimination capacity of 91 % and 0.36 g m −3 h −1 were attained, respectively, at180 s empty bed residence time (EBRT). After acclimatization of the system for increased formaldehyde concentrations of up to 276±5 mg m −3 and for EBRT of 180 s, those values were stabilized at around 72 % and 3.98g −3 h −1 , respectively. The experimental results showed that the system was effective for a high loading rate of formaldehyde with an acceptable EBRT. Compared to the application of compost alone as a media, a mixture of compost and woodchip (50/50v/v%) enhanced the performance of the biofilter. The most predominant microorganism involved in the biodegradation of formaldehyde was a species of citrobacter called Citrobacter freundii, an aerobic gram-negative bacillus. Pressure drop of the reactor over the entire operations was about 1 mm H2O m −1 .

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“…Different techniques have been developed in order to solve this environmental problem, i.e. incineration, pyrolysis and chemical [3] and biochemical degradation. [4] However, some of them lead to other halogenated pollutants.…”

Section: Introductionmentioning

confidence: 99%

Hydrodebromination of bromoarenes using Grignard reagents catalyzed by metal ions

Miao

Sun

2008

Applied Organom Chemis

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The metal salts, FeCl · 2 4H 2 O, FeCl 3 , NiCl 2 , CoCl 2 , CuBr and some iron complexes were found to be efficient catalysts for hydrodebromination of bromoarenes under mild reaction conditions with two equivalents of Grignard reagents. Among them, the iron systems showed the best behavior regarding economic and environmental considerations. All the alkyl Grignard reagents (except CH 3 MgCl) and p-tolylMgBr were promising reductive reagents with the formation of their homo-coupling products.

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A procedure for production of adapted bacteria to degrade chlorinated aromatics

Cited by 21 publications

References 12 publications

Elimination of chlorobenzene vapors from air in a compost‐based biofilter

Elimination of chlorobenzene vapors from air in a compost‐based biofilter

Formaldehyde Removal from Airstreams Using a Biofilter with a Mixture of Compost and Woodchips Medium

Hydrodebromination of bromoarenes using Grignard reagents catalyzed by metal ions

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