CNTs/MOF-808 painted plates for extended treatment of pharmaceutical and agrochemical wastewaters in a novel photocatalytic reactor
CNTs/MOF-808 painted plates for extended treatment of pharmaceutical and agrochemical wastewaters in a novel photocatalytic reactor
复制标题
DOI：
10.1016/j.cej.2020.127152
复制
发表时间：
2021-02-15
影响因子：
15.1
通讯作者：
Alalm, Mohamed Gar
中科院分区：
文献类型：
--
作者：
Samy, Mahmoud;Ibrahim, Mona G.;Alalm, Mohamed Gar
网络技术在大量的学术研究和实际应用之间存在着巨大的差距。通过将研究转向反应器设计、固定的光催化剂、真实的废物和成本估算，可使光催化剂的可行性蓬勃发展。本文制备了金属有机骨架808（MOF-808）和碳纳米管（CNTs）的新型纳米复合材料，并将其应用于光催化降解卡马西平（CBZ）和二嗪磷（diazinon）。采用具有CNT/MOF-808涂漆板的光催化反应器以可重复使用的形式使用催化剂。进行各种分析以研究CNT/MOF-808复合材料的形态和组成。采用响应面法对工艺参数进行优化。经涂覆的板在连续循环中的重复使用表明CNT/M0 F-808的适当稳定性。以二嗪农为例，5个循环的降解率分别为99.7%、96.3%、94.8%、93.5%和92.1%。降解机理和氧化途径已被深入研究。此外，该反应器用于处理真实的农药和制药废液，显示出总有机碳（TOC）分别减少了93%和76%。成本估算研究表明，大型光催化系统的成本为2.523美元/立方米，包括摊销和运营成本。
The photocatalysis technology suffers a yawning gap between the extravagant academic studies and substantive implementation. The viability of photocatalysis may thrive by steering the research towards the reactor design, fixed photocatalysts, real wastes, and cost estimation. Herein, we prepared novel nanocomposites of metal organic framework-808 (MOF-808) and carbon nanotubes (CNTs) with different ratios to employ them in the photocatalytic degradation of carbamazepine (CBZ) and diazinon. A photocatalytic reactor with CNTs/MOF-808 painted plates was employed to use the catalyst in a reusable form. Various analyses were conducted to study the morphology and composition of CNTs/MOF-808 composites. The response surface methodology (RSM) was used for the optimizing the operational parameters. The reuse of the coated plates in continuous cycles indicated the proper stability of CNTs/MOF-808. For instance, the degradation of diazinon was 99.7%, 96.3%, 94.8%, 93.5% and 92.1% for five cycles. The degradation mechanism and the oxidation pathways have been intensively investigated. Furthermore, the reactor was employed for the treatment of real agrochemical and pharmaceutical liquid wastes showing a reduction in the total organic carbon (TOC) by 93% and 76%, respectively. A cost estimation study implies that a large-scale photocatalytic system costs 2.523 $/m3 including the amortization and operating costs.