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Adsorptive removal of bisphenol A, chloroxylenol, and carbamazepine from water using a novel β-cyclodextrin polymer
Ecotoxicology and Environmental Safety ( IF 6.2 ) Pub Date : 2018-12-07 , DOI: 10.1016/j.ecoenv.2018.11.117
Yanbo Zhou , Guang Cheng , Ke Chen , Jian Lu , Juying Lei , Shengyan Pu

The emerging organic micro-pollutants, such as bisphenol A (BPA), chloroxylenol (PCMX) and carbamazepine (CBZ), have raised concerns owing to their adverse impact on human health and ecological security. In this study, a novel cyclodextrin polymer (β-CDP) has been successfully prepared by nucleophilic substitution of β-cyclodextrin with tetrafluoroterephthalonitrile (TFP). The removal of three emerging organic micro-pollutants (BPA, CBZ and PCMX) by β-CDP under a single or mixture adsorption system was examined, and the adsorption behavior was investigated by adsorption kinetics and isotherm study. The maximum adsorption capacity of β-CDP for BPA, PCMX and CBZ according to Langmuir isotherm in single system was 164.4, 144.1 and 136.4 mg/g, respectively. Compared with single system, the competitive adsorption of each pollutant on β-CDP in mixture system was only slightly inhibited. Changing the pH, raising the presence of fulvic acid (FA) or ionic strength had no significant influence on the adsorption of BPA, PCMX and CBZ onto β-CDP. The removal of these three organic micro-pollutants was related to the value of logKow of the contaminants. These results demonstrated remarkable advantages of β-CDP material relevant to organic micro-pollutants removal in wastewater treatment.



中文翻译:

使用新型β-环糊精聚合物吸附去除水中的双酚A,氯羟亚麻酚和卡马西平

新兴的有机微污染物,例如双酚A(BPA),氯氧酚(PCMX)和卡马西平(CBZ),由于它们对人体健康和生态安全产生不利影响,引起了人们的关注。在这项研究中,通过用四氟对苯二甲腈(TFP)亲核取代β-环糊精,已经成功制备了新型环糊精聚合物(β-CDP)。研究了在单一或混合吸附系统下用β-CDP去除三种新兴的有机微污染物(BPA,CBZ和PCMX),并通过吸附动力学和等温线研究了吸附行为。根据Langmuir等温线,β-CDP对BPA,PCMX和CBZ的最大吸附容量分别为164.4、144.1和136.4 mg / g。与单系统相比,混合系统中每种污染物在β-CDP上的竞争性吸附仅受到轻微抑制。改变pH值,增加黄腐酸(FA)的存在或提高离子强度对BPA,PCMX和CBZ在β-CDP上的吸附没有显着影响。这三种有机微污染物的去除与logK的值有关OW的污染物。这些结果证明了β-CDP材料与废水处理中的有机微污染物去除相关的显着优势。

更新日期:2018-12-07
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