Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC 29634, United States.
Department of Public Works Engineering, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt.
Sci Total Environ. 2020 Jan 1;698:134197. doi: 10.1016/j.scitotenv.2019.134197. Epub 2019 Sep 2.
Recently, a series of new photocatalysts have been developed for to combat diverse bio-recalcitrant contaminants and the inactivation of bacteria. Modeling photocatalytic processes is important to assess these materials, and to understand and optimize their performance. In this study, the recent literature is critically reviewed and analyzed to identify and compare methods of modeling photocatalytic performance. The Langmuir-Hinshelwood model (L-H) has been used in many studies to rationalize the degradation kinetics of single contaminants because it is the simplest model including both the adsorption equilibrium and degradation rates. Other studies report the development of more sophisticated variants of the L-H model that include the rates of catalyst excitation, recombination of electron-hole pairs, production of reactive oxygen species (ROS), and formation of by-products. Modified Chick-Watson (CW) and Hom models have been used by many researchers to include lag phases of bacteria in the description of disinfection kinetics. Artificial neural networks (ANNs) have been used to analyze the effects of operational conditions on photocatalyst performance. Moreover, response surface methodology (RSM) has been employed for experimental design, and optimization of operational conditions. We have reviewed and analyzed all available articles that model photocatalytic activity towards water pollution, summarized and put them in context, and recommended future research directions.
最近，已经开发出一系列新的光催化剂，以对抗各种生物难降解污染物和细菌的失活。对光催化过程进行建模对于评估这些材料以及理解和优化它们的性能非常重要。在这项研究中，对最近的文献进行了批判性回顾和分析，以确定和比较光催化性能建模的方法。朗缪尔-欣谢尔伍德模型（L-H）已在许多研究中用于合理化单一污染物的降解动力学，因为它是最简单的模型，包括吸附平衡和降解速率。其他研究报告了 L-H 模型的更复杂变体的发展，其中包括催化剂激发、电子空穴对复合、活性氧物种（ROS）生成和副产物形成的速率。许多研究人员使用修正的 Chick-Watson（CW）和 Hom 模型来描述消毒动力学中的细菌滞后阶段。人工神经网络（ANNs）已被用于分析操作条件对光催化剂性能的影响。此外，响应面法（RSM）已被用于实验设计和操作条件的优化。我们回顾和分析了所有可用于模拟水污染的光催化活性的文章，对它们进行了总结和阐述，并为未来的研究方向提出了建议。
