Adsorption of organic micro pollutants with high silica zeolite in secondary wastewater effluent

Competition between OMP and NOM

Master thesis (2019)

Authors

P.T. Li Civil Engineering & Geosciences

Contributors

L.C. Rietveld Sanitary Engineering - CEG (mentor)
Sebastiaan Heijman Sanitary Engineering - CEG (graduation committee member)
F.E. Zietzschmann Sanitary Engineering - CEG (graduation committee member)
T.A. Bogaard Water Resources - CEG (graduation committee member)
Faculty
Civil Engineering & Geosciences, Civil Engineering & Geosciences
Copyright: © 2019 Pui Li
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Published Date

27-11-2019

Language

English

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Faculty

Civil Engineering & Geosciences

Abstract

This work investigated which NOM fraction from secondary wastewater effluent were causing competition with metoprolol and clarithromycin for adsorption site on high silica zeolites (HSZ). This thesis works with five commercially available HSZ frameworks (FAU, MOR, BEA, MFI and FER). Adsorption batch test were performed with demi water, wastewater and nano filtrated wastewater with molecular weight cutoff around 400 Da. The competition between two organic micro pollutant (OMP) metoprolol and clarithromycin in demi water were not obvious for FAU type high silica zeolite. Metoprolol is adsorbed much better than clarithromycin regardless of the water type or high silica zeolite framework. Adsorption of clarithromycin was the best with MOR and BEA in demi water, but the removal deteriorated severely in secondary wastewater effluent. Clarithromycin adsorption on BEA and MOR in micro filtrated wastewater and nano filtrated wastewater seems to be comparably impaired. Metoprolol on the other hand showed counter intuitive results. It adsorbs worse in nano filtrated wastewater compared to micro filtrated wastewater for MOR and BEA.