Bioremediation of PCDD/Fs-contaminated municipal solid waste incinerator fly ash by a potent microbial biocatalyst

Nam, In-Hyun; Kim, Young Mo; Murugesan, Kumarasamy; Jeon, Jong Rok; Chang, Yoon Young; Chang, Yoon Seok

doi:10.1016/j.jhazmat.2007.12.086

Cited by 44 publications

(13 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6014; German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany) employed in the study was routinely grown in the dark (160 rpm, 28°C) in 20 mL MSM supplemented with 1 mM dibenzofuran as the sole source of carbon and energy, as described previously (Hong et al 2002;Nam et al 2006Nam et al , 2008. To evaluate the ability of strain RW1 to utilize carbazole, we examined growth of this strain in the presence of carbazole including not inoculated controls.…”

Section: Bacterial Strain and Growth Culture Conditionsmentioning

confidence: 99%

A Catabolic Activity of Sphingomonas wittichii RW1 in the Biotransformation of Carbazole

Nam

Kim

Murugesan

et al. 2011

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

The well-known bacterium Sphingomonas wittichii RW1 catabolically degrades dibenzo-p-dioxin and dibenzofuran, as well as their chlorinated derivatives. The catabolic degradation of dioxin is initiated by a ring-hydroxylating dioxygenase. The biotransformation of carbazole by S. wittichii RW1 was determined in the present study. Dioxin dioxygenase from the dibenzofuran induced RW1 strain was thought to be unable to attack carbazole, which includes a heterocyclic aromatic dibenzopyrrole system. However, our results showed that carbazole was transformed to anthranilic acid and catechol. The color of the culture suspension changed upon addition of carbazole due to formation of a nitrogen-containing metabolite. Relevant metabolic intermediates were identified by gas chromatographic mass spectrometry and electrospray ionization time-of-flight mass spectrometry with comparison to the corresponding authentic compounds. The dioxygenase of the dibenzofuran induced RW1 attacked at the angular position adjacent to the nitrogen atom to give a dihydroxylated metabolic intermediate. Contrary to predictions made in previous reports, S. wittichii RW1 displayed positive catabolic activity toward carbazole.

show abstract

Section: Bacterial Strain and Growth Culture Conditionsmentioning

confidence: 99%

A Catabolic Activity of Sphingomonas wittichii RW1 in the Biotransformation of Carbazole

Nam

Kim

Murugesan

et al. 2011

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

show abstract

“…CH2, Fusarium sp. VSO7 [85], and Pleurotus pulmonarius [86]. Biodegradation of 2, (19), and 2,4,8-trichlorodibenzofuran (2,4,8-TCDF) (20) was conducted with two fungi (PL1 and 267) already screened from nature [87].…”

Section: Aromatic Hydrocarbonsmentioning

confidence: 99%

Pollutants Biodegradation by Fungi

Pinedo-Rivilla

Aleu²,

Collado

2009

COC

126

View full text Add to dashboard Cite

Abstract:One of the major problems facing the industrialized world today is the contamination of soils, ground water, sediments, surfacewater and air with hazardous and toxic chemicals. The application of microorganisms which degrade or transform hazardous organic contaminants to less toxic compounds has become increasingly popular in recent years. This review, with approximately 300 references covering the period [2005][2006][2007][2008], describes the use of fungi as a method of bioremediation to clean up environmental pollutants.

show abstract

“…They concluded that Sphingomonas wittichii RW1 could decompose PCDD, PCDF, and their metabolites, in MSWI FA and they might serve as a potential candidate for the industrial elimination of PCDDs/PCDFs in FA. In a more recent work, Nam et al (2008) treated MSWI FA with a biocatalyst for 21 days using a solid-state fermentation system. They obtained a reduction of 69 % of total toxic PCDD/PCDF present in MSWI FA.…”

Section: Biological Removalmentioning

confidence: 99%

“…Therefore, most of the FA produced was disposed off as landfill in earlier times, but this practice has become increasingly more under examination with time for environmental concerns, because of Nam et al (2008) environmental costs that are incurred so that a company's activities do not damage the environment or that any such damage is put right. Figure 3.16 shows the main fields of FA employ in the EU nowadays (ECOBA 2008).…”

Section: Fly Ash Recyclingmentioning

confidence: 99%