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. 2018 Apr 12;9:1426. doi: 10.1038/s41467-018-03612-2

Fig. 3.

Fig. 3

Assessment of the effect of the feed solution concentration. a Solvent flux and reverse solute flux as a function of tetracycline concentration. b Tetracycline rejections under different tetracycline concentrations. The draw solution is 2 M LiCl in ethanol and the operation mode is the FO mode. The error bar represented the standard deviation from at least three independent OSFO tests with different membrane coupons, and the interfacial polymerization was conducted separately for each membrane coupon. Our results indicate that the OSFO process is able to concentrate a pharmaceutical product up to 10000 ppm without sacrificing the rejection