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首页> 外文期刊>Environmental Engineering Science >Removal of Carbamazepine from Water by a Novel TiO2–Coconut Shell Powder/UV Process: Composite Preparation and Photocatalytic Activity
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Removal of Carbamazepine from Water by a Novel TiO2–Coconut Shell Powder/UV Process: Composite Preparation and Photocatalytic Activity

机译：新型TiO2-椰子壳粉/紫外光工艺从水中去除卡马西平：复合材料的制备和光催化活性

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摘要

A novel TiO2–coconut shell powder (TCNSP) composite, prepared by the controlled sol-gel method with ansubsequent heat treatment, was investigated as an innovative photocatalytic absorbent for the removal ofncarbamazepine (CBZ). CBZ is used worldwide as an antiepileptic drug, which has recently been recognized asnan important organic pollutant increasingly found in wastewaters from urban areas and other aquatic environments.nThe granulation process was performed by using a semiautomated mass production line to producensufficient quantities of TCNSP composites, possessing sufficient crush strength for commercialization. Physicalnproperties of the TCNSP composite such as crystallinity, morphology, crush strength, and the Brunauer-Emmett-nTeller (BET)–specific surface area were controlled by the mass ratio of titanium dioxide sol and coconut shellnpowder (CNSP). Calcination at 700u0002C produced anatase phase TiO2 in the TCNSP composites with a BET highnsurface area of 454m2/g. Anatase crystallite size of the TCNSP composite increased from 2.37 to 15.11nm withnincreasing calcination temperature from 500u0002C to 800u0002C. Calcinated TCNSP composites had higher CBZ removalnefficiency (98%) than pure TiO2 (23%) and CNSP (34%) within a 40-min reaction time. Optimization of thisninnovative adsorption/photocatalytic process was obtained by a response surface methodology and a centralncomposite design model, which indicated that this novel and sustainable technology was successful in removingnCBZ from a solution.
机译：通过控制溶胶-凝胶法和随后的热处理制备了一种新型的TiO2-椰子壳粉（TCNSP）复合材料，作为一种创新的光催化吸收剂，用于去除ncarbamazepine（CBZ）。 CBZ在世界范围内用作抗癫痫药，最近被公认为是在城市地区和其他水生环境废水中越来越多地发现的重要的有机污染物。n制粒过程是使用半自动化的大规模生产线来生产足够数量的TCNSP复合材料，具有足够的抗压强度，可用于商业化。 TCNSP复合材料的物理性质，例如结晶度，形态，压碎强度和Brunauer-Emmett-nTeller（BET）比表面积，是由二氧化钛溶胶和椰子壳粉（CNSP）的质量比控制的。在700u0002C下煅烧在TCNSP复合材料中产生的锐钛矿相TiO2的BET高表面积为454m2 / g。随着煅烧温度从500u0002C增加到800u0002C，TCNSP复合材料的锐钛矿微晶尺寸从2.37nm增加到15.11nm。在40分钟的反应时间内，煅烧的TCNSP复合材料具有比纯TiO2（23％）和CNSP（34％）更高的CBZ去除效率（98％）。通过响应面方法和中心复合设计模型对这种创新的吸附/光催化工艺进行了优化，这表明这种新颖且可持续的技术成功地从溶液中去除了nCBZ。

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