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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Monitoring of effluent DOM biodegradation using fluorescence, UV and DOC measurements
Year:
2006
Source of publication :
Chemosphere
Authors :
בוריסובר, מיכאל
;
.
לאור, יעל
;
.
סעדי, אברהים
;
.
Volume :
63
Co-Authors:


Armon, R., Technion-Israel Institute of Technology, Faculty of Civil and Environmental Engineering, Haifa, 32000, Israel
 

Facilitators :
From page:
530
To page:
539
(
Total pages:
10
)
Abstract:
The potential of effluent DOM to undergo microbial degradation was assessed in batch experiments. Effluent samples from Haifa wastewater treatment plant and Qishon reservoir (Greater Haifa wastewater reclamation complex, Israel) were incubated either with effluent or soil microorganisms for a period of 2-4 months and were characterized by dissolved organic carbon contents (DOC), UV254 absorbance and by fluorescence excitation-emission matrices. Three main fluorescence peaks were identified that can be attributed to humic/fulvic components and "protein-like" structures. During biodegradation, specific fluorescences (F/DOC) of the three peaks were increased at various extents, suggesting selective degradation of non-fluorescing constituents. In some cases increase in the effluent fluorescence (F) was observed thus proposing (i) the formation of new fluorescing material associated with DOM biodegradation and/or (ii) degradation of certain organic components capable of quenching DOM fluorescence. Based on the ratio between fluorescence intensity and UV254, different biodegradation dynamics for fluorescent DOM constituents as compared with other UV-absorbing molecules was delineated. Overall, about 50% of the total DOM was found to be readily degradable such that residual resistant DOC levels were between 8 and 10 mg l-1. Enhanced levels of residual DOM in effluent-irrigated soils may contribute to the DOM pool capable of carrying pollutants to groundwater. © 2005 Elsevier Ltd. All rights reserved.
Note:
Related Files :
Agriculture
Biodegradation
groundwater
Israel
proteins
ultraviolet radiation
wastewater treatment
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.chemosphere.2005.07.075
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27061
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:27
You may also be interested in
Scientific Publication
Monitoring of effluent DOM biodegradation using fluorescence, UV and DOC measurements
63


Armon, R., Technion-Israel Institute of Technology, Faculty of Civil and Environmental Engineering, Haifa, 32000, Israel
 

Monitoring of effluent DOM biodegradation using fluorescence, UV and DOC measurements
The potential of effluent DOM to undergo microbial degradation was assessed in batch experiments. Effluent samples from Haifa wastewater treatment plant and Qishon reservoir (Greater Haifa wastewater reclamation complex, Israel) were incubated either with effluent or soil microorganisms for a period of 2-4 months and were characterized by dissolved organic carbon contents (DOC), UV254 absorbance and by fluorescence excitation-emission matrices. Three main fluorescence peaks were identified that can be attributed to humic/fulvic components and "protein-like" structures. During biodegradation, specific fluorescences (F/DOC) of the three peaks were increased at various extents, suggesting selective degradation of non-fluorescing constituents. In some cases increase in the effluent fluorescence (F) was observed thus proposing (i) the formation of new fluorescing material associated with DOM biodegradation and/or (ii) degradation of certain organic components capable of quenching DOM fluorescence. Based on the ratio between fluorescence intensity and UV254, different biodegradation dynamics for fluorescent DOM constituents as compared with other UV-absorbing molecules was delineated. Overall, about 50% of the total DOM was found to be readily degradable such that residual resistant DOC levels were between 8 and 10 mg l-1. Enhanced levels of residual DOM in effluent-irrigated soils may contribute to the DOM pool capable of carrying pollutants to groundwater. © 2005 Elsevier Ltd. All rights reserved.
Scientific Publication
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