Volume 41, Issue 2 pp. 413-420
Research Article

Selectivity of Nanoporous MnO2 and TiO2 Membranes for Residual Contaminants in Treated Wastewater

Adewale Giwa

Adewale Giwa

Khalifa University of Science and Technology, Department of Chemical Engineering, P.O. Box 54224, Abu Dhabi, United Arab Emirates

These authors contributed equally.

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Sung M. Jung

Sung M. Jung

Massachusetts Institute of Technology (MIT), Department of Electrical Engineering and Computer Science, 50 Vassar St., 02139 Cambridge, MA, USA

Korea Institute of Toxicology, Future Environmental Research Center, 17 Jegok-gil, 52834 Jinju, Korea

These authors contributed equally.

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Menatalla Ahmed

Menatalla Ahmed

Khalifa University of Science and Technology, Department of Chemical Engineering, P.O. Box 54224, Abu Dhabi, United Arab Emirates

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Wenjing Fang

Wenjing Fang

Massachusetts Institute of Technology (MIT), Department of Electrical Engineering and Computer Science, 50 Vassar St., 02139 Cambridge, MA, USA

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Jing Kong

Corresponding Author

Jing Kong

Massachusetts Institute of Technology (MIT), Department of Electrical Engineering and Computer Science, 50 Vassar St., 02139 Cambridge, MA, USA

Correspondence: Jing Kong ([email protected]), Massachusetts Institute of Technology (MIT), Department of Electrical Engineering and Computer Science, 50 Vassar St., 02139 Cambridge, MA, USA; Shadi W. Hasan ([email protected]) Khalifa University of Science and Technology, Department of Chemical Engineering, P.O. Box 54224, Abu Dhabi, United Arab Emirates.Search for more papers by this author
Shadi W. Hasan

Corresponding Author

Shadi W. Hasan

Khalifa University of Science and Technology, Department of Chemical Engineering, P.O. Box 54224, Abu Dhabi, United Arab Emirates

Correspondence: Jing Kong ([email protected]), Massachusetts Institute of Technology (MIT), Department of Electrical Engineering and Computer Science, 50 Vassar St., 02139 Cambridge, MA, USA; Shadi W. Hasan ([email protected]) Khalifa University of Science and Technology, Department of Chemical Engineering, P.O. Box 54224, Abu Dhabi, United Arab Emirates.Search for more papers by this author
First published: 12 January 2018
Citations: 9

Abstract

Treated effluent from an electrically enhanced membrane bioreactor (eMBR) was filtered through MnO2 or TiO2 nanoporous membranes for the removal of residual heavy metals, bacteria, and biological oxygen demand (BOD). The fresh and spent membranes were characterized via energy-dispersive X-ray spectroscopy (EDAX), zeta potential analysis, and thermogravimetric analysis (TGA). Water analysis was performed by means of UV/Vis spectrophotometry. For most contaminants, eMBR-TiO2 showed highest removal efficiency compared to MnO2 because of the combined adhesion and photocatalytic effects of TiO2. Meanwhile, eMBR-MnO2 provided higher removal efficiency for Fe.

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