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- W2076457549 abstract "Two commercial carbons, coconut shell- and wood-based were chosen to evaluate the mechanisms of carbamazepine (CBZ) and sulfamethoxazole (SMX) adsorption from a low (ppm level) concentration of these pharmaceuticals. The initial sample and those after adsorption were extensively characterized using potentiometric titration, thermal analysis combined with mass spectroscopy, FTIR, and XPS. It was found that not only porosity but also surface chemistry plays an important role in the adsorption process. The results show that extensive surface reactions take place during adsorption and adsorbates undergo significant transformations in the pore system. The ability of carbon surfaces to form superoxide ions results in the oxidation of CBZ and SMX, and their partial decomposition. Surface chemistry also promotes dimerization of the latter species. Moreover, functional groups of CBZ and SMX, mainly amines, react with oxygen groups of the carbon surface. Thus not only microporous carbons with sizes of pores similar to those of adsorbate molecules, but the carbons with large pores, rich in oxygen groups, can efficiently remove these pharmaceuticals following the reactive adsorption mechanism." @default.
- W2076457549 created "2016-06-24" @default.
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- W2076457549 date "2014-12-01" @default.
- W2076457549 modified "2023-10-18" @default.
- W2076457549 title "The effects of activated carbon surface features on the reactive adsorption of carbamazepine and sulfamethoxazole" @default.
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- W2076457549 doi "https://doi.org/10.1016/j.carbon.2014.08.081" @default.
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