נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Hydration-assisted sorption of a probe organic compound at different peat hydration levels: The link solvation model
Year:
2007
Authors :
בוריסובר, מיכאל
;
.
גרבר, אלן
;
.
צ'חנסקי, לודמילה
;
.
Volume :
41
Co-Authors:
Graber, E.R., Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Bet Dagan, 50250, Israel
Tsechansky, L., Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Bet Dagan, 50250, Israel
Borisover, M., Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Bet Dagan, 50250, Israel
Facilitators :
From page:
547
To page:
554
(
Total pages:
8
)
Abstract:
Sorption isotherms of phenol on Pahokee Peat as model natural organic matter (NOM) have been measured at different partial NOM hydrations (water activities). Sorption at a given phenol solution concentration is substantially smaller in the lower water activity systems than in higher water activity systems, reaching a sorption maximum at an intermediate water activity. Such cooperative phenol uptake at interim water activities as a result of NOM hydration (hydration-assisted sorption) is predicted by the link solvation model (LSM), whereby water enhances the disruption of the noncovalently cross-linked NOM structure, creating new sorption sites. The LSM is herein extended to account for the observed direct relationship between isotherm linearity and water activity. The extended LSM provides an excellent description of phenol sorption isotherm data at nine different NOM hydration levels with a single set of three unique parameters. The successful fit of the LSM supports the conceptual model of creation of new sorption sites for sorbate molecules in the hydrated organic matter sorbent, accompanied by competition for those new sites by water molecules at high water activities. © 2007 American Chemical Society.
Note:
Related Files :
Adsorption
covalent bond
Models, Chemical
Molecular structure
phenols
soil
water
עוד תגיות
תוכן קשור
More details
DOI :
10.1021/es061274a
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31697
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:04
You may also be interested in
Scientific Publication
Hydration-assisted sorption of a probe organic compound at different peat hydration levels: The link solvation model
41
Graber, E.R., Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Bet Dagan, 50250, Israel
Tsechansky, L., Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Bet Dagan, 50250, Israel
Borisover, M., Institute of Soil, Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Bet Dagan, 50250, Israel
Hydration-assisted sorption of a probe organic compound at different peat hydration levels: The link solvation model
Sorption isotherms of phenol on Pahokee Peat as model natural organic matter (NOM) have been measured at different partial NOM hydrations (water activities). Sorption at a given phenol solution concentration is substantially smaller in the lower water activity systems than in higher water activity systems, reaching a sorption maximum at an intermediate water activity. Such cooperative phenol uptake at interim water activities as a result of NOM hydration (hydration-assisted sorption) is predicted by the link solvation model (LSM), whereby water enhances the disruption of the noncovalently cross-linked NOM structure, creating new sorption sites. The LSM is herein extended to account for the observed direct relationship between isotherm linearity and water activity. The extended LSM provides an excellent description of phenol sorption isotherm data at nine different NOM hydration levels with a single set of three unique parameters. The successful fit of the LSM supports the conceptual model of creation of new sorption sites for sorbate molecules in the hydrated organic matter sorbent, accompanied by competition for those new sites by water molecules at high water activities. © 2007 American Chemical Society.
Scientific Publication
You may also be interested in