TY - JOUR
T1 - Removal of chromium (VI) by commercial anion exchange membrane BII from an aqueous solution
T2 - Adsorption kinetic, equilibrium and thermodynamic studies
AU - Arif, Sadaf
AU - Zafar, Shagufta
AU - Khan, Muhammad Imran
AU - Manzoor, Suryyia
AU - Shanableh, Abdallah
AU - Garcia, Javier Fernandez
AU - Hayat, Muhammad
N1 - Funding Information:
The authors are highly thankful to Government Sadiq College Women University (GSCWU), Bahawalpur, Pakistan for financial support.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/6
Y1 - 2023/6
N2 - This work reports chromium (Cr(VI)) adsorption from an aqueous solution onto anion exchange membrane (AEM) BII. The Cr(VI) percentage adsorption was increased from 71 to 82 %, 70 to 92 % and 72 to 86 % with BII membrane dosage, contact time, and temperature respectively while decrease 93 to 84 % with Cr(VI) initial concentration. Kinetic illustration showed that Cr(VI) adsorption obeyed pseud-second-order model. Isotherm illustration denoted that Cr(VI) adsorption onto BII membrane fitted to Langmuir isotherm because correlation coefficient (R2 = 0.992) was close to unity. Moreover, determined mean adsorption energy (E = 2.78 KJ/mol) value represented that Cr(VI) adsorption onto BII membranes was physical adsorption process. Measured value of enthalpy (ΔH° = 13.59 KJ/mol) suggested that it was endothermic process. In addition, the determined of Gibb's free energy (ΔG°) value for Cr (VI) adsorption revealed that it was spontaneous and feasible process.
AB - This work reports chromium (Cr(VI)) adsorption from an aqueous solution onto anion exchange membrane (AEM) BII. The Cr(VI) percentage adsorption was increased from 71 to 82 %, 70 to 92 % and 72 to 86 % with BII membrane dosage, contact time, and temperature respectively while decrease 93 to 84 % with Cr(VI) initial concentration. Kinetic illustration showed that Cr(VI) adsorption obeyed pseud-second-order model. Isotherm illustration denoted that Cr(VI) adsorption onto BII membrane fitted to Langmuir isotherm because correlation coefficient (R2 = 0.992) was close to unity. Moreover, determined mean adsorption energy (E = 2.78 KJ/mol) value represented that Cr(VI) adsorption onto BII membranes was physical adsorption process. Measured value of enthalpy (ΔH° = 13.59 KJ/mol) suggested that it was endothermic process. In addition, the determined of Gibb's free energy (ΔG°) value for Cr (VI) adsorption revealed that it was spontaneous and feasible process.
KW - Adsorption
KW - Anion exchange membrane BII
KW - Chromium
KW - Endothermic process
KW - Pseud-second-order model
UR - http://www.scopus.com/inward/record.url?scp=85152115619&partnerID=8YFLogxK
U2 - 10.1016/j.inoche.2023.110696
DO - 10.1016/j.inoche.2023.110696
M3 - Article
AN - SCOPUS:85152115619
SN - 1387-7003
VL - 152
JO - Inorganic Chemistry Communications
JF - Inorganic Chemistry Communications
M1 - 110696
ER -