The most popular transport mechanisms in the FO process is solution?diffusion model, while some studies revealed rejection efficiencies by FO depended primarily on molecular size and charge. To date, few paper predicted the transport or rejection of the trace organic compounds in FO. The objectives of this work were (1) to investigate the rejection of the pharmaceuticals (2) to predict the pharmaceutical rejection by FO with solution-diffusion model (3) to explore the potential application the convection-diffusion-affinity model in FO.  A summarized comparison of the experimentally obtained and the predicted rejection ratios for all the pharmaceuticals by solution?diffusion model were shown in figure1 for two membranes. In general, the predicted rejection ratios and the experimentally data were well matched. The predicted rejection ratio involved the solute-membrane affinity of two representative compounds were also shown in figure2. The predicted rejection CZ (neutral) for both membranes were greatly improved, while the predicted data for CM (negatively charged) were not greatly affected by the solute-membrane affinity. 

Pharmaceuticals retention mechanisms by forward osmosis

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.