TY - JOUR
T1 - Triclosan adsorption from model system by mineral sorbent diatomite
AU - Sharipova, Altynay A.
AU - Aidarova, Saule B.
AU - Bekturganova, Neila Ye
AU - Tleuova, Aiym
AU - Kerimkulova, Moldir
AU - Yessimova, Orynkul
AU - Kairaliyeva, Talmira
AU - Lygina, Olena
AU - Lyubchik, Svitlana
AU - Miller, Reinhard
N1 - sem pdf conforme despacho.
PY - 2017/11/5
Y1 - 2017/11/5
N2 - Adsorption of model systems of triclosan by mineral sorbent diatomite is studied. The triclosan equilibrium concentration was measured spectrophotometrically, the morphology of the diatomite characterized using scanning electron microscopy and the amount of the adsorbed triclosan on the diatomite quantified by a mass balance. Adsorption isotherms were analyzed according to the linear/nonlinear form of Langmuir, Freundlich, Sips and Toth isotherm models isotherms, using AMPL software. It is shown that nonlinear Langmuir and Sips isotherm model provided suitable fitting results and no pronounced difference in adsorption efficiency between isotherms measured after 1, 2 and 3 days adsorption was observed. Determined maximum adsorption capacity of diatomite towards triclosan qs is 140 mg/g. Averaged calculated values of ΔG are −9.9 and −9.6 kJ/mol for Langmuir and Sips models respectively. The negative sign of such values indicates spontaneous, physical in nature adsorption.
AB - Adsorption of model systems of triclosan by mineral sorbent diatomite is studied. The triclosan equilibrium concentration was measured spectrophotometrically, the morphology of the diatomite characterized using scanning electron microscopy and the amount of the adsorbed triclosan on the diatomite quantified by a mass balance. Adsorption isotherms were analyzed according to the linear/nonlinear form of Langmuir, Freundlich, Sips and Toth isotherm models isotherms, using AMPL software. It is shown that nonlinear Langmuir and Sips isotherm model provided suitable fitting results and no pronounced difference in adsorption efficiency between isotherms measured after 1, 2 and 3 days adsorption was observed. Determined maximum adsorption capacity of diatomite towards triclosan qs is 140 mg/g. Averaged calculated values of ΔG are −9.9 and −9.6 kJ/mol for Langmuir and Sips models respectively. The negative sign of such values indicates spontaneous, physical in nature adsorption.
KW - Adsorption
KW - Adsorption isotherms
KW - Diatomite
KW - Sorbents
KW - Triclosan
UR - http://www.scopus.com/inward/record.url?scp=85020719646&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2017.06.012
DO - 10.1016/j.colsurfa.2017.06.012
M3 - Article
AN - SCOPUS:85020719646
SN - 0927-7757
VL - 532
SP - 97
EP - 101
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
ER -