Publication Date:
2018-01-13
Description:
Treated effluent from an electrically-enhanced membrane bioreactor (eMBR) was filtered through MnO 2 or TiO 2 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 obtained via UV/Vis spectrophotometry. For most contaminants, eMBR-TiO 2 showed highest removal efficiency than MnO 2 because of the combined adhesion and photocatalytic effects of TiO 2 , i.e. 100% bacteria, 97.8% BOD, and 96.9% Zn removal by eMBR-TiO 2 as compared to 97.5% bacteria, 97.6% BOD, and 80% Zn removal by eMBR-MnO 2 . Meanwhile, eMBR-MnO 2 showed higher removal efficiency for Fe, i.e. 97.9% as compared to 81.1% by eMBR-TiO 2 .
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
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Process Engineering, Biotechnology, Nutrition Technology
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