TY - JOUR
T1 - An unsteady state retention model for fluid desorption from sorbents
AU - Bazargan, Alireza
AU - Sadeghi, Hamed
AU - Garcia-Mayoral, Ricardo
AU - McKay, Gordon
N1 - Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/7/5
Y1 - 2015/7/5
N2 - New studies regarding the sorption of fluids by solids are published every day. In performance testing, after the sorbent has reached saturation, it is usually removed from the sorbate bath and allowed to drain. The loss of liquid from the sorbents with time is of prime importance in the real-world application of sorbents, such as in oil spill response. However, there is currently no equation used for modeling the unsteady state loss of the liquid from the dripping sorbent. Here, an analytical model has been provided for modeling the dynamic loss of liquid from the sorbent in dripping experiments. Data from more than 60 sorbent-sorbate systems has been used to validate the model. The proposed model shows excellent agreement with experimental results and is expressed as:. Ut=ULe-Kt+UeIn which Ut (kg/kg) is the uptake capacity of the sorbent at any time t (s) during dripping, UL (kg/kg) is the uptake capacity lost due to dripping, and Ue (kg/kg) is the equilibrium uptake capacity reached after prolonged dripping. K (1/s) is defined as the Kamaan coefficient and controls the curvature of the retention profile. Kamaan (IPA phonetics: kæma{turned script}n) is an Iranian (Farsi/Persian) word meaning "arc" or "curve" and hence the letter K has been designated.
AB - New studies regarding the sorption of fluids by solids are published every day. In performance testing, after the sorbent has reached saturation, it is usually removed from the sorbate bath and allowed to drain. The loss of liquid from the sorbents with time is of prime importance in the real-world application of sorbents, such as in oil spill response. However, there is currently no equation used for modeling the unsteady state loss of the liquid from the dripping sorbent. Here, an analytical model has been provided for modeling the dynamic loss of liquid from the sorbent in dripping experiments. Data from more than 60 sorbent-sorbate systems has been used to validate the model. The proposed model shows excellent agreement with experimental results and is expressed as:. Ut=ULe-Kt+UeIn which Ut (kg/kg) is the uptake capacity of the sorbent at any time t (s) during dripping, UL (kg/kg) is the uptake capacity lost due to dripping, and Ue (kg/kg) is the equilibrium uptake capacity reached after prolonged dripping. K (1/s) is defined as the Kamaan coefficient and controls the curvature of the retention profile. Kamaan (IPA phonetics: kæma{turned script}n) is an Iranian (Farsi/Persian) word meaning "arc" or "curve" and hence the letter K has been designated.
KW - Analytical model
KW - Dynamic oil loss
KW - Kamaan coefficient
KW - Oil spill remediation
KW - Retention curve
UR - http://www.scopus.com/inward/record.url?scp=84925372638&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2015.02.036
DO - 10.1016/j.jcis.2015.02.036
M3 - Article
AN - SCOPUS:84925372638
SN - 0021-9797
VL - 450
SP - 127
EP - 134
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -