The increased detection of pharmaceuticals in finished drinking water has become a growing cause of concern in recent years. The removal of atenolol, ranitidine, and carbamazepine by sepiolite, following functionalization of its surface by organosilane grafting, constituted the subject of this investigation. Silylated surfaces include octyl, γ-aminopropyl, 3-chloropropyl, and triphenyl moieties. The sorption of atenolol and ranitidine was higher on sepiolite functionalized with 3-chloropropyl, while carbamazepine showed a higher sorption on sepiolite with triphenyl groups. Filtration experiments of both ranitidine and carbamazepine on octyl- and triphenyl-sepiolite, respectively, showed a higher retention of ranitidine in comparison to carbamazepine, in spite of the fact that the number of sorption sites was lower due to its higher binding rate.

中文翻译：

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用于去除水处理中药物的接枝海泡石

近年来，成品饮用水中药物检测的增加已成为一个日益引起关注的问题。在通过有机硅烷接枝对其表面进行功能化后，通过海泡石去除阿替洛尔、雷尼替丁和卡马西平，构成了本研究的主题。硅烷化表面包括辛基、γ-氨基丙基、3-氯丙基和三苯基部分。阿替洛尔和雷尼替丁在用 3-氯丙基官能化的海泡石上的吸附更高，而卡马西平在带有三苯基基团的海泡石上显示出更高的吸附。雷尼替丁和卡马西平分别对辛基海泡石和三苯基海泡石的过滤实验表明，与卡马西平相比，雷尼替丁的保留率更高，尽管吸附位点的数量由于其较高的结合率而较低。