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Efficient elimination of chlorpyrifos via tailored macroporous membrane based on Al-MOF
Sustainable Materials and Technologies ( IF 8.6 ) Pub Date : 2021-07-26 , DOI: 10.1016/j.susmat.2021.e00326
Reda M. Abdelhameed 1 , Abdallah A. Shaltout 2 , Mohamed H.H. Mahmoud 3 , Hossam E. Emam 4
Affiliation  

Chlorpyrifos as one of organophosphorus pesticides, is easily absorbed by human skin and dangerously causing inhibition of acetylcholinesterase that is essentially required for transporting nerve impulse. Therefore, the current approach focused on the adsorptive removal of Chlorpyrifos using superior adsorptive membrane composed of Al-metal organic framework@cellulose acetate (MIL-53-NH2@CA). The membrane was uniquely synthesized in two sequential steps; firstly, preparation of porous CA membrane and consequently, incorporation of MIL-53-NH2 within the synthesized porous CA membrane. Procedure was performed to impregnate various ratios of MIL-53-NH2 (20–60%) within the porous CA membrane. Micro-particles MIL-53-NH2 was successively immobilized within the membrane, while, the pore diameter was ranged in 124.5–485.6 nm. Adsorptive removal of chlorpyrifos through the prepared membrane was corresponded to Langmuir isotherm and pseudo-second ordered reaction. The maximum adsorptive capacity was observably increased from 160.36 mg/g for CA to 207.62–356.34 mg/g for MIL-53-NH2@CA. Impregnation of 60% MIL-53-NH2 resulted in fastening of the adsorptive removal rate of chlorpyrifos by factor of 2.2. The employed membrane exhibited very good recoverability and the adsorptive compatibility was diminished by 27.9% after five reuses. The prepared MIL-53-NH2@CA membrane can be promisingly applicable in the superior removal of pesticides and in various environmental applications.



中文翻译:

基于 Al-MOF 的定制大孔膜有效去除毒死蜱

毒死蜱作为一种有机磷杀虫剂,很容易被人体皮肤吸收并危险地抑制乙酰胆碱酯酶,而乙酰胆碱酯酶是传输神经冲动所必需的。因此,目前的方法侧重于使用由铝金属有机骨架@醋酸纤维素(MIL-53-NH 2 @CA)组成的优质吸附膜吸附去除毒死蜱。该膜是在两个连续步骤中独特合成的;首先,制备多孔 CA 膜,然后将 MIL-53-NH 2掺入合成的多孔 CA 膜中。执行程序以在多孔 CA 膜内浸渍各种比例的 MIL-53-NH 2 (20–60%)。微粒 MIL-53-NH 2依次固定在膜内,孔径在 124.5-485.6 nm 之间。通过制备的膜吸附去除毒死蜱对应于 Langmuir 等温线和伪二级有序反应。最大吸附容量从 CA 的 160.36 mg/g 明显增加到 MIL-53-NH 2 @CA 的207.62–356.34 mg/g 。60% MIL-53-NH 2 的浸渍导致毒死蜱的吸附去除率增加了 2.2 倍。所使用的膜表现出非常好的恢复性,并且在五次重复使用后吸附相容性降低了 27.9%。制备的 MIL-53-NH 2 @CA 膜有望用于杀虫剂的高效去除和各种环境应用。

更新日期:2021-08-01
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