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פותח על ידי קלירמאש פתרונות בע"מ -
Bioavailability of phenanthrene sorbed to mineral-associated humic acid
Year:
1999
Source of publication :
Water Research
Authors :
לאור, יעל
;
.
Volume :
33
Co-Authors:
Laor, Y., Department of Environmental Science, Cook College, Rutgers University, New Brunswick, NJ 08903-0231, United States, Fac. Civ. Eng., Environ. Water R., Technion, Haifa 32000, Israel
Strom, P.F., NJ Agric. Exp. Station, Cook College, Rutgers University, New Brunswick, NJ 08903-0231, United States
Farmer, W.J., Dept. of Soils and Environ. Sci., University of California, Riverside, CA 92521, United States
Facilitators :
From page:
1719
To page:
1729
(
Total pages:
11
)
Abstract:
Phenanthrene, a 3-ring aromatic hydrocarbon, was used as a model substrate to analyze the effect of sorption on the bioavailability of polycyclic aromatic hydrocarbons (PAHs). This study focused on sorption to mineral-associated humic acid (HA). Batch sorption analyses of phenanthrene to mineral-HA complexes were performed as integral part of the bioavailability experiments to account for the sorbed fraction under the various experimental conditions. A mixed culture that was enriched from a coal tar contaminated soil dominated by Pseudomonas sp. served as an inoculum. Phenanthrene mineralization was substantially enhanced upon sorption to mineral-HA complexes and the degree of enhancement was positively correlated with the fraction of sorbed phenanthrene. This stimulation is thought to be related to sorption of both the microorganisms and phenanthrene to the colloidal surfaces. This study suggests that when sorbed contaminants are still bioavailable, the presence of surfaces may stimulate mineralization.Phenanthrene, a 3-ring aromatic hydrocarbon, was used as a model substrate to analyze the effect of sorption on the bioavailability of polycyclic aromatic hydrocarbons (PAHs). This study focused on sorption to mineral-associated humic acid (HA). Batch sorption analyses of phenanthrene to mineral-HA complexes were performed as integral part of the bioavailability experiments to account for the sorbed fraction under the various experimental conditions. A mixed culture that was enriched from a coal tar contaminated soil dominated by Pseudomonas sp. served as an inoculum. Phenanthrene mineralization was substantially enhanced upon sorption to mineral-HA complexes and the degree of enhancement was positively correlated with the fraction of sorbed phenanthrene. This stimulation is thought to be related to sorption of both the microorganisms and phenanthrene to the colloidal surfaces. This study suggests that when sorbed contaminants are still bioavailable, the presence of surfaces may stimulate mineralization.
Note:
Related Files :
bacteria
bioavailability
Coal tar
environmental monitoring
Organic acids
soil pollution
Soils
Sorption
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/S0043-1354(98)00378-9
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20294
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:35
Scientific Publication
Bioavailability of phenanthrene sorbed to mineral-associated humic acid
33
Laor, Y., Department of Environmental Science, Cook College, Rutgers University, New Brunswick, NJ 08903-0231, United States, Fac. Civ. Eng., Environ. Water R., Technion, Haifa 32000, Israel
Strom, P.F., NJ Agric. Exp. Station, Cook College, Rutgers University, New Brunswick, NJ 08903-0231, United States
Farmer, W.J., Dept. of Soils and Environ. Sci., University of California, Riverside, CA 92521, United States
Bioavailability of phenanthrene sorbed to mineral-associated humic acid
Phenanthrene, a 3-ring aromatic hydrocarbon, was used as a model substrate to analyze the effect of sorption on the bioavailability of polycyclic aromatic hydrocarbons (PAHs). This study focused on sorption to mineral-associated humic acid (HA). Batch sorption analyses of phenanthrene to mineral-HA complexes were performed as integral part of the bioavailability experiments to account for the sorbed fraction under the various experimental conditions. A mixed culture that was enriched from a coal tar contaminated soil dominated by Pseudomonas sp. served as an inoculum. Phenanthrene mineralization was substantially enhanced upon sorption to mineral-HA complexes and the degree of enhancement was positively correlated with the fraction of sorbed phenanthrene. This stimulation is thought to be related to sorption of both the microorganisms and phenanthrene to the colloidal surfaces. This study suggests that when sorbed contaminants are still bioavailable, the presence of surfaces may stimulate mineralization.Phenanthrene, a 3-ring aromatic hydrocarbon, was used as a model substrate to analyze the effect of sorption on the bioavailability of polycyclic aromatic hydrocarbons (PAHs). This study focused on sorption to mineral-associated humic acid (HA). Batch sorption analyses of phenanthrene to mineral-HA complexes were performed as integral part of the bioavailability experiments to account for the sorbed fraction under the various experimental conditions. A mixed culture that was enriched from a coal tar contaminated soil dominated by Pseudomonas sp. served as an inoculum. Phenanthrene mineralization was substantially enhanced upon sorption to mineral-HA complexes and the degree of enhancement was positively correlated with the fraction of sorbed phenanthrene. This stimulation is thought to be related to sorption of both the microorganisms and phenanthrene to the colloidal surfaces. This study suggests that when sorbed contaminants are still bioavailable, the presence of surfaces may stimulate mineralization.
Scientific Publication
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