Nano/bio treatment of polychlorinated biphenyls with evaluation of comparative toxicity
Abstract
The persistence of polychlorinated biphenyl (PCB) Aroclor 1248 in soils and sediments is a major concern because of its toxicity and presence at high concentrations. In this study, we developed an integrated remediation system for PCBs using chemical catalysis and biodegradation. The dechlorination of Aroclor 1248 was achieved by treatment with bimetallic nanoparticles Pd/nFe under anoxic conditions. Among the 32 PCB congeners of Aroclor 1248 examined, our process dechlorinated 99%, 92%, 84%, and 28% of tri-, tetra-, penta-, and hexachlorinated biphenyls, respectively. The resulting biphenyl was biodegraded rapidly by Burkholderia xenovorans LB400. Benzoic acid was detected as an intermediate during the biodegradation process. The toxicity of the residual PCBs after nano-bio treatment was evaluated in terms of toxic equivalent values which decreased from 33.8 × 10-5 μg g-1 to 9.5 × 10-5 μg g-1. The residual PCBs also had low cytotoxicity toward Escherichia coli as demonstrated by lower reactive oxygen species levels, lower glutathione peroxidase activity, and a reduced number of dead bacteria.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1176997
- Report Number(s):
- BNL-107601-2015-JA
Journal ID: ISSN 0304-3894; R&D Project: 02155/02158; YN0100000
- Grant/Contract Number:
- DE-SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Hazardous Materials
- Additional Journal Information:
- Journal Volume: 287; Journal ID: ISSN 0304-3894
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Le, Thao Thanh, Francis, Arokiasamy J., Nguyen, Hoang Khanh, Jeon, Jong -Rok, and Chang, Yoon -Seok. Nano/bio treatment of polychlorinated biphenyls with evaluation of comparative toxicity. United States: N. p., 2015.
Web. doi:10.1016/j.jhazmat.2015.02.001.
Le, Thao Thanh, Francis, Arokiasamy J., Nguyen, Hoang Khanh, Jeon, Jong -Rok, & Chang, Yoon -Seok. Nano/bio treatment of polychlorinated biphenyls with evaluation of comparative toxicity. United States. https://doi.org/10.1016/j.jhazmat.2015.02.001
Le, Thao Thanh, Francis, Arokiasamy J., Nguyen, Hoang Khanh, Jeon, Jong -Rok, and Chang, Yoon -Seok. Tue .
"Nano/bio treatment of polychlorinated biphenyls with evaluation of comparative toxicity". United States. https://doi.org/10.1016/j.jhazmat.2015.02.001. https://www.osti.gov/servlets/purl/1176997.
@article{osti_1176997,
title = {Nano/bio treatment of polychlorinated biphenyls with evaluation of comparative toxicity},
author = {Le, Thao Thanh and Francis, Arokiasamy J. and Nguyen, Hoang Khanh and Jeon, Jong -Rok and Chang, Yoon -Seok},
abstractNote = {The persistence of polychlorinated biphenyl (PCB) Aroclor 1248 in soils and sediments is a major concern because of its toxicity and presence at high concentrations. In this study, we developed an integrated remediation system for PCBs using chemical catalysis and biodegradation. The dechlorination of Aroclor 1248 was achieved by treatment with bimetallic nanoparticles Pd/nFe under anoxic conditions. Among the 32 PCB congeners of Aroclor 1248 examined, our process dechlorinated 99%, 92%, 84%, and 28% of tri-, tetra-, penta-, and hexachlorinated biphenyls, respectively. The resulting biphenyl was biodegraded rapidly by Burkholderia xenovorans LB400. Benzoic acid was detected as an intermediate during the biodegradation process. The toxicity of the residual PCBs after nano-bio treatment was evaluated in terms of toxic equivalent values which decreased from 33.8 × 10-5 μg g-1 to 9.5 × 10-5 μg g-1. The residual PCBs also had low cytotoxicity toward Escherichia coli as demonstrated by lower reactive oxygen species levels, lower glutathione peroxidase activity, and a reduced number of dead bacteria.},
doi = {10.1016/j.jhazmat.2015.02.001},
journal = {Journal of Hazardous Materials},
number = ,
volume = 287,
place = {United States},
year = {Tue Feb 03 00:00:00 EST 2015},
month = {Tue Feb 03 00:00:00 EST 2015}
}
Web of Science
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Works referencing / citing this record:
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