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Removal of chromium (VI) by commercial anion exchange membrane BII from an aqueous solution: Adsorption kinetic, equilibrium and thermodynamic studies
被引:21
作者:
Arif, Sadaf
[1
]
Zafar, Shagufta
[1
]
Khan, Muhammad Imran
[2
]
Manzoor, Suryyia
[3
]
Shanableh, Abdallah
[2
]
Garcia, Javier Fernandez
[4
,5
]
Hayat, Muhammad
[3
]
机构:
[1] Govt Sadiq Coll Women Univ, Dept Chem, Bahawalpur 63000, Pakistan
[2] Univ Sharjah, Res Inst Sci & Engn RISE, Sharjah 27272, U Arab Emirates
[3] Bahauddin Zakariya Univ, Inst Chem Sci, Multan 60800, Pakistan
[4] UCL, Dept Chem Engn, Torrington Pl, London WC1E 7JE, England
[5] Univ Ramon Llull, IQS Sch Engn, Via Augusta 390, Barcelona 08017, Spain
关键词:
Chromium;
Anion exchange membrane BII;
Endothermic process;
Adsorption;
Pseud-second-order model;
CONGO RED-DYE;
ACTIVATED CARBON;
METHYL-ORANGE;
RICE HUSK;
ADSORBENT;
LEAVES;
IONS;
BPPO;
WASTEWATERS;
SORBENT;
D O I:
10.1016/j.inoche.2023.110696
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
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 (Delta H degrees = 13.59 KJ/mol) suggested that it was endothermic process. In addition, the determined of Gibb's free energy (Delta G degrees) value for Cr (VI) adsorption revealed that it was spontaneous and feasible process.
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页数:9
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