TY - JOUR
T1 - A model for irreversible adsorption hysteresis
AU - Vaccari, David A.
AU - Kaouris, Maria
PY - 1988/12/1
Y1 - 1988/12/1
N2 - A model is proposed which is capable of describing non-linear irreversible adsorption hysteresis with a single set of coefficients. The model is predicated on the assumption that two types of adsorption sites are present on the sorbent. At the first type of sites, solutes are irreversibly adsorbed in an amount related to the highest concentration at which the sorbent was exposed. Adsorption at the other sites is completely reversible and non-hysteretic. The total adsorption is the sum of the two. However, when the equilibrium concentration is decreased, only the reversible component desorbs. Experimental protocol and mathematical techniques are presented for calibrating and verifying the model. The model is capable of predicting continuous flow column behavior based upon batch isotherm data.
AB - A model is proposed which is capable of describing non-linear irreversible adsorption hysteresis with a single set of coefficients. The model is predicated on the assumption that two types of adsorption sites are present on the sorbent. At the first type of sites, solutes are irreversibly adsorbed in an amount related to the highest concentration at which the sorbent was exposed. Adsorption at the other sites is completely reversible and non-hysteretic. The total adsorption is the sum of the two. However, when the equilibrium concentration is decreased, only the reversible component desorbs. Experimental protocol and mathematical techniques are presented for calibrating and verifying the model. The model is capable of predicting continuous flow column behavior based upon batch isotherm data.
KW - Adsorption
KW - Batch
KW - Column
KW - Desorption. Hysteresis
KW - Irreversible
KW - Model
UR - http://www.scopus.com/inward/record.url?scp=0024163774&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024163774&partnerID=8YFLogxK
U2 - 10.1080/10934528809375453
DO - 10.1080/10934528809375453
M3 - Article
AN - SCOPUS:0024163774
SN - 0360-1226
VL - 23
SP - 797
EP - 822
JO - Journal of Environmental Science and Health. Part A: Environmental Science and Engineering
JF - Journal of Environmental Science and Health. Part A: Environmental Science and Engineering
IS - 8
ER -