Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 534671
Title Anoxic conditions are beneficial for abiotic diclofenac removal from water with manganese oxide (MnO2)
Author(s) Liu, Wenbo; Sutton, Nora B.; Rijnaarts, Huub H.M.; Langenhoff, Alette A.M.
Source Environmental Science and Pollution Research 25 (2018)10. - ISSN 0944-1344 - p. 10141 - 10147.
DOI https://doi.org/10.1007/s11356-018-1569-2
Department(s) Sub-department of Environmental Technology
WIMEK
Wageningen Institute for Environment and Climate Research
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Abiotic pharmaceutical removal - Anoxic conditions - Manganese oxide - MnO morphologies - MnO reactivity mechanism - pH effects
Abstract This is the first study examining pharmaceutical removal under anoxic conditions with MnO2. This study compares the abiotic removal of seven pharmaceuticals with reactive MnO2 particles in the presence of oxygen (oxic conditions) and in the absence of oxygen (anoxic conditions). Due to the novelty of pharmaceutical removal under anoxic conditions, the influence of phosphate buffer, pH, and MnO2 morphologies is also examined. Results show that over 90% of diclofenac is removed under anoxic conditions. Additionally, we found that (1) anoxic conditions are beneficial for diclofenac removal with MnO2, (2) phosphate buffer affects the pharmaceutical removal efficiencies, (3) higher pharmaceutical removal is obtained at acidic pH compared to that at neutral or alkaline conditions, and (4) amorphous MnO2 removes pharmaceuticals better than crystalline MnO2. The pharmaceutical molecular structure and properties, MnO2 properties especially reactive sites of the MnO2 surface, are important for degradation kinetics. This study provides a fundamental basis towards understanding pharmaceutical degradation with MnO2 under anoxic conditions, and development of a cost-effective, sustainable technology for removal of pharmaceuticals from water.
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