Enhanced adsorption of per- and polyfluoroalkyl substances (PFAS) by edible, nutrient-amended montmorillonite clays.
Enhanced adsorption of per- and polyfluoroalkyl substances (PFAS) by edible, nutrient-amended montmorillonite clays.
复制标题
可食用的、营养改良的蒙脱石粘土对全氟烷基和多氟烷基物质（PFAS）的增强吸附。
DOI：
10.1016/j.watres.2020.116534
复制
发表时间：
2021-01-01
期刊：
影响因子：
12.8
通讯作者：
Phillips TD
中科院分区：
文献类型：
--
作者：
Wang M;Orr AA;Jakubowski JM;Bird KE;Casey CM;Hearon SE;Tamamis P;Phillips TD
Humans and animals are frequently exposed to PFAS (per- and polyfluoroalkyl substances) through drinking water and food; however, no therapeutic sorbent strategies have been developed to mitigate this problem. Montmorillonites amended with the common nutrients, carnitine and choline, were characterized for their ability to bind 4 representative PFAS (PFOA, PFOS, GenX, and PFBS). Adsorption/desorption isothermal analysis showed that PFOA, PFOS (and a mixture of the two) fit the Langmuir model with high binding capacity, affinity and enthalpy at conditions simulating the stomach. A low percentage of desorption occurred at conditions simulating the intestine. The results suggested that hydrophobic and electrostatic interactions, and hydrogen bonding were responsible for sequestering PFAS into clay interlayers. Molecular dynamics (MD) simulations suggested the key mode of interaction of PFAS was through fluorinated carbon chains, and confirmed that PFOA and PFOS had enhanced binding to amended clays compared to GenX and PFBS. The safety and efficacy of amended montmorillonite clays were confirmed in Hydra vulgaris, where a mixture of amended sorbents delivered the highest protection against a PFAS mixture. These important results suggest that the inclusion of edible, nutrient-amended clays with optimal affinity, capacity, and enthalpy can be used to decrease the bioavailability of PFAS from contaminated drinking water and diets.
登录
查看更多内容
影响因子：
5.6
作者：
Hedley, C. B.;Yuan, G.;Theng, B. K. G.
通讯作者：
Theng, B. K. G.
DOI：
10.1080/02652030701567467
发表时间：
2008-01-01
影响因子：
2.9
作者：
Phillips, T. D.;Afriyie-Gyawu, E.;Wang, J. -S.
通讯作者：
Wang, J. -S.
影响因子：
4.2
作者：
Jaynes, William F.;Zartman, Richard E.
通讯作者：
Zartman, Richard E.
影响因子：
11.4
作者：
Steinle-Darling, Eva;Reinhard, Martin
通讯作者：
Reinhard, Martin
影响因子：
3.5
作者：
Dash B;Phillips TD
通讯作者：
Phillips TD