Effect of nonionic surfactants on biodegradation of phenanthrene by a marine bacteria of Neptunomonas naphthovorans

Jing Liang Li, Bing-Hung Chen

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Biodegradation of three nonionic surfactants, Tergitol 15-S-X (X = 7, 9 and 12), and their effects on the biodegradation of phenanthrene by marine bacteria, Neptunomonas naphthovorans, were studied. The experimental outcomes could be fit well with the first-order biodegradation kinetics model. It was observed that the biodegradability of these surfactants decreased with an increase in the chain length of the hydrophilic moiety of the surfactant. When surfactant concentrations initially present were less than 250 mg carbon/L, biodegradability of Tergitol 15-S-X surfactants is around 0.3. Reduced biodegradability of Tergitol 15-S-7 and Tergitol 15-S-9 was observed when their concentrations initially present were increased to 322 and 371 mg carbon/L, respectively. In general, biodegradation of phenanthrene was enhanced with increasing solubilization of phenanthrene by these surfactants. However, with the same initial concentration of phenanthrene, biodegradability of phenanthrene was found to decrease with an increase in surfactant concentration. For these three surfactants, more than 80% of the phenanthrene was degraded when surfactant concentrations initially present were 200 mg/L. However, less than 30% of phenanthrene could be degraded, if initial surfactant concentrations were increased to 1000 mg/L. Interestingly, the concurrent biodegradation of the surfactants reduced their effective concentrations for micelle formation and, hence, contribute to the higher bioavailability of phenanthrene by gradually releasing phenanthrene molecules into the aqueous phase.

Original languageEnglish
Pages (from-to)66-73
Number of pages8
JournalJournal of Hazardous Materials
Volume162
Issue number1
DOIs
Publication statusPublished - 2009 Feb 15

Fingerprint

Nonionic surfactants
phenanthrene
Biodegradation
Surface-Active Agents
surfactant
biodegradation
Bacteria
Surface active agents
bacterium
Poloxalene
Biodegradability
Carbon
effect
ethyl-2-methylthio-4-methyl-5-pyrimidine carboxylate
Micelles
carbon
Chain length
solubilization
Biological Availability
bioavailability

All Science Journal Classification (ASJC) codes

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

@article{54aad12982d542519e953086cbe3b4ee,
title = "Effect of nonionic surfactants on biodegradation of phenanthrene by a marine bacteria of Neptunomonas naphthovorans",
abstract = "Biodegradation of three nonionic surfactants, Tergitol 15-S-X (X = 7, 9 and 12), and their effects on the biodegradation of phenanthrene by marine bacteria, Neptunomonas naphthovorans, were studied. The experimental outcomes could be fit well with the first-order biodegradation kinetics model. It was observed that the biodegradability of these surfactants decreased with an increase in the chain length of the hydrophilic moiety of the surfactant. When surfactant concentrations initially present were less than 250 mg carbon/L, biodegradability of Tergitol 15-S-X surfactants is around 0.3. Reduced biodegradability of Tergitol 15-S-7 and Tergitol 15-S-9 was observed when their concentrations initially present were increased to 322 and 371 mg carbon/L, respectively. In general, biodegradation of phenanthrene was enhanced with increasing solubilization of phenanthrene by these surfactants. However, with the same initial concentration of phenanthrene, biodegradability of phenanthrene was found to decrease with an increase in surfactant concentration. For these three surfactants, more than 80{\%} of the phenanthrene was degraded when surfactant concentrations initially present were 200 mg/L. However, less than 30{\%} of phenanthrene could be degraded, if initial surfactant concentrations were increased to 1000 mg/L. Interestingly, the concurrent biodegradation of the surfactants reduced their effective concentrations for micelle formation and, hence, contribute to the higher bioavailability of phenanthrene by gradually releasing phenanthrene molecules into the aqueous phase.",
author = "Li, {Jing Liang} and Bing-Hung Chen",
year = "2009",
month = "2",
day = "15",
doi = "10.1016/j.jhazmat.2008.05.019",
language = "English",
volume = "162",
pages = "66--73",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",
number = "1",

}

Effect of nonionic surfactants on biodegradation of phenanthrene by a marine bacteria of Neptunomonas naphthovorans. / Li, Jing Liang; Chen, Bing-Hung.

In: Journal of Hazardous Materials, Vol. 162, No. 1, 15.02.2009, p. 66-73.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of nonionic surfactants on biodegradation of phenanthrene by a marine bacteria of Neptunomonas naphthovorans

AU - Li, Jing Liang

AU - Chen, Bing-Hung

PY - 2009/2/15

Y1 - 2009/2/15

N2 - Biodegradation of three nonionic surfactants, Tergitol 15-S-X (X = 7, 9 and 12), and their effects on the biodegradation of phenanthrene by marine bacteria, Neptunomonas naphthovorans, were studied. The experimental outcomes could be fit well with the first-order biodegradation kinetics model. It was observed that the biodegradability of these surfactants decreased with an increase in the chain length of the hydrophilic moiety of the surfactant. When surfactant concentrations initially present were less than 250 mg carbon/L, biodegradability of Tergitol 15-S-X surfactants is around 0.3. Reduced biodegradability of Tergitol 15-S-7 and Tergitol 15-S-9 was observed when their concentrations initially present were increased to 322 and 371 mg carbon/L, respectively. In general, biodegradation of phenanthrene was enhanced with increasing solubilization of phenanthrene by these surfactants. However, with the same initial concentration of phenanthrene, biodegradability of phenanthrene was found to decrease with an increase in surfactant concentration. For these three surfactants, more than 80% of the phenanthrene was degraded when surfactant concentrations initially present were 200 mg/L. However, less than 30% of phenanthrene could be degraded, if initial surfactant concentrations were increased to 1000 mg/L. Interestingly, the concurrent biodegradation of the surfactants reduced their effective concentrations for micelle formation and, hence, contribute to the higher bioavailability of phenanthrene by gradually releasing phenanthrene molecules into the aqueous phase.

AB - Biodegradation of three nonionic surfactants, Tergitol 15-S-X (X = 7, 9 and 12), and their effects on the biodegradation of phenanthrene by marine bacteria, Neptunomonas naphthovorans, were studied. The experimental outcomes could be fit well with the first-order biodegradation kinetics model. It was observed that the biodegradability of these surfactants decreased with an increase in the chain length of the hydrophilic moiety of the surfactant. When surfactant concentrations initially present were less than 250 mg carbon/L, biodegradability of Tergitol 15-S-X surfactants is around 0.3. Reduced biodegradability of Tergitol 15-S-7 and Tergitol 15-S-9 was observed when their concentrations initially present were increased to 322 and 371 mg carbon/L, respectively. In general, biodegradation of phenanthrene was enhanced with increasing solubilization of phenanthrene by these surfactants. However, with the same initial concentration of phenanthrene, biodegradability of phenanthrene was found to decrease with an increase in surfactant concentration. For these three surfactants, more than 80% of the phenanthrene was degraded when surfactant concentrations initially present were 200 mg/L. However, less than 30% of phenanthrene could be degraded, if initial surfactant concentrations were increased to 1000 mg/L. Interestingly, the concurrent biodegradation of the surfactants reduced their effective concentrations for micelle formation and, hence, contribute to the higher bioavailability of phenanthrene by gradually releasing phenanthrene molecules into the aqueous phase.

UR - http://www.scopus.com/inward/record.url?scp=57349126160&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57349126160&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2008.05.019

DO - 10.1016/j.jhazmat.2008.05.019

M3 - Article

VL - 162

SP - 66

EP - 73

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

IS - 1

ER -