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Removal of monoethylene glycol from wastewater by using Zr-metal organic frameworks

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Open access
Authors
Zaboon, S.
Abid, H.
Yao, Z.
Gubner, Rolf
Wang, Shaobin
Barifcani, Ahmed
Date
2018
Type
Journal Article

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Zaboon, S. and Abid, H. and Yao, Z. and Gubner, R. and Wang, S. and Barifcani, A. 2018. Removal of monoethylene glycol from wastewater by using Zr-metal organic frameworks. Journal of Colloid and Interface Science. 523: pp. 75-85.
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Journal of Colloid and Interface Science
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School of Chemical and Petroleum Engineering
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Abstract

Mono-ethylene glycol (MEG), used in the oil and gas industries as a gas hydrate inhibitor, is a hazardous chemical present in wastewater from those processes. Metal-organic frameworks (MOFs) (modified UiO-66 * and UiO-66-2OH) were used for the effective removal of MEG waste from effluents of distillation columns (MEG recovery units). Batch contact adsorption method was used to study the adsorption behavior toward these types of MOFs. Adsorption experiments showed that these MOFs had very high affinity toward MEG. Significant adsorption capacity was demonstrated on UiO-66-2OH and modified UiO-66 at 1000 mg·g -1 and 800 mg·g -1 respectively. The adsorption kinetics were fitted to a pseudo first-order model. UiO-66-2OH showed a higher adsorption capacity due to the presence of hydroxyl groups in its structure. A Langmuir model gave the best fitting for isotherm of experimental data at pH = 7.