TY - JOUR
T1 - Equilibrium studies of the adsorption of aromatic disulfonates by Mg–Al oxide
AU - Kameda, Tomohito
AU - Umetsu, Mami
AU - Kumagai, Shogo
AU - Yoshioka, Toshiaki
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2018/3
Y1 - 2018/3
N2 - The removal of m-benzenedisulfonate (BDS2−) and 2,6-naphthalenedisulfonate (NDS2−) anions by Mg–Al oxide was investigated. Langmuir model best describes the adsorption of both aromatic disulfonate anions, with the maximum amount of uptake higher for BDS2−. Mg–Al oxide reacts easier with the aromatic disulfonate anion with higher charge density, a trend that is the opposite of that observed in aromatic sulfonate anions. After increasing the charge from −1 to −2, the removal of aromatic disulfonates by Mg–Al oxide is controlled by electrostatic interactions, instead of hydrophobic interactions that are dominant for aromatic sulfonate anions.
AB - The removal of m-benzenedisulfonate (BDS2−) and 2,6-naphthalenedisulfonate (NDS2−) anions by Mg–Al oxide was investigated. Langmuir model best describes the adsorption of both aromatic disulfonate anions, with the maximum amount of uptake higher for BDS2−. Mg–Al oxide reacts easier with the aromatic disulfonate anion with higher charge density, a trend that is the opposite of that observed in aromatic sulfonate anions. After increasing the charge from −1 to −2, the removal of aromatic disulfonates by Mg–Al oxide is controlled by electrostatic interactions, instead of hydrophobic interactions that are dominant for aromatic sulfonate anions.
KW - A: Inorganic compounds
KW - B: Chemical synthesis
UR - http://www.scopus.com/inward/record.url?scp=85035790905&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85035790905&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2017.11.024
DO - 10.1016/j.jpcs.2017.11.024
M3 - Article
AN - SCOPUS:85035790905
VL - 114
SP - 129
EP - 132
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
ER -