Adsorption and Biodegradation of Pentachlorophenol by Polyurethane-Immobilized Flavobacterium

Hu, Zhong Cheng.; Korus, Roger A.; Levinson, William E.; Crawford, R.L.

doi:10.1021/es00052a023

Cited by 62 publications

(26 citation statements)

References 16 publications

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“…So far, PCP adsorption has been studied mainly with adsorbents such as powdered activated carbon (Lin et Biomass Preparation al., 1991;Siahpush et al, 1992), granular activated carbon (Nelson and Yang, 1995), and polyurethane foam Mycobacterium chlorophenolicum PCP-1 (DSM 43826) (Hu et al, 1994). The main purposes of these studies (Hä ggblom et al, 1994), was grown on a modified minwere to investigate the use of adsorbents and coimmobieral salt medium (Wittmann et al, 1994) del and Pfennig (1977), and 20 g/L glucose as the sole (1989) studied the adsorption and desorption (termed carbon and energy source.…”

Section: Methodsmentioning

confidence: 99%

Adsorption and desorption of pentachlorophenol on cells ofMycobacterium chlorophenolicum PCP-1

Brandt¹,

Zeng²,

Deckwer³

1997

Biotechnol. Bioeng.

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Section: Methodsmentioning

confidence: 99%

Adsorption and desorption of pentachlorophenol on cells ofMycobacterium chlorophenolicum PCP-1

Brandt¹,

Zeng²,

Deckwer³

1997

Biotechnol. Bioeng.

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“…The evidence is based on the stoichiometric release of inorganic chloride (Tyler and Finn 1974;Edgehill and Finn 1982;Saber and Crawford 1985;Li et al 1991;Radehaus and Schmidt 1992;Resnick and Chapman 1994;Mannisto et al 1999;Hollender et al 2000;Yang et al 2005), the concomitant production of biomass linked to chlorophenol utilization (Tyler and Finn 1974;Edgehill and Finn 1982;Radehaus and Schmidt 1992;Hu et al 1994;Resnick and Chapman 1994;Rutgers et al 1997) or the conversion of [ 14 C]-labeled chlorophenols to 14 CO 2 (Chu and Kirsch 1972;Saber and Crawford 1985;Apajalahti and Salkinoja-Salonen 1986;Haggblom et al 1988b).…”

Section: Aerobic Bacterial Growth On Chlorophenols As a Sole Source Omentioning

confidence: 99%

“…strains CP-2 and CG1 PCP (Haggblom et al 1988b) Unidentified strain KC-3 PCP (Chu and Kirsch 1972) Flavobacterium sp. ATCC39723 PCP (Hu et al 1994;Orser and Lange 1994) Flavobacterium sp. PCP (Gonzalez and Hu 1991) Flavobacterium strains PCP (Saber and Crawford 1985) Arthrobacter NC PCP (Stanlake and Finn 1982) Rev Environ Sci Biotechnol (2008) 7:211-241 221 degrade lower chlorinated phenols meta-cleavage (Bae et al 1997a; Koh et al 1997).…”

Section: Aerobic Bacterial Growth On Chlorophenols As a Sole Source Omentioning

confidence: 99%

Microbial degradation of chlorinated phenols

Field

Sierra-Álvarez

2007

Rev Environ Sci Biotechnol

145

102

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Chlorophenols have been introduced into the environment through their use as biocides and as by-products of chlorine bleaching in the pulp and paper industry. Chlorophenols are subject to both anaerobic and aerobic metabolism. Under anaerobic conditions, chlorinated phenols can undergo reductive dechlorination when suitable electron-donating substrates are available. Halorespiring bacteria are known which can use both low and highly chlorinated congeners of chlorophenol as electron acceptors to support growth. Many strains of halorespiring bacteria have the capacity to eliminate ortho-chlorines; however only bacteria from the species Desulfitobacterium hafniense (formerly frappieri) can eliminate para-and meta-chlorines in addition to ortho-chlorines. Once dechlorinated, the phenolic carbon skeletons are completely converted to methane and carbon dioxide by other anaerobic microorganisms in the environment. Under aerobic conditions, both lower and higher chlorinated phenols can serve as sole electron and carbon sources supporting growth. The best studied strains utilizing pentachlorophenol belong to the genera Mycobacterium and Sphingomonas. Two main strategies are used by aerobic bacteria for the degradation of chlorophenols. Lower chlorinated phenols for the most part are initially attacked by monooxygenases yielding chlorocatechols as the first intermediates. On the other hand, polychlorinated phenols are converted to chlorohydroquinones as the initial intermediates. Fungi and some bacteria are additionally known that cometabolize chlorinated phenols.

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“…A sample of 5 ml of the supernatant was then removed for analysis by UV-vis spectrophotometry, the amount of PCP adsorbed being determined from the difference between the initial and final concentrations. Such concentrations were measured using a Jenway 6105 UV-vis spectrophotometer at a wavelength of 320 nm [10,25,26].…”

Section: Methodsmentioning

confidence: 99%