Mechanisms and Models of Adsorption: TiO 2 -Supported Biochar for Removal of 3,4-Dimethylaniline

作者：Ahmed M. Abodif, Meng Li, Sanjrani Manzoor Ahmed, Abdelaal S. A. Ahmed, Norville Belvett, Zhan Zhi Wei, Ning Du · 发表于：ACS Omega · 年份：2020 · DOI：10.1021/acsomega.0c00619 · 被引用次数：52 · 研究领域：Nanomaterials for catalytic reactions、Adsorption and biosorption for pollutant removal、Covalent Organic Framework Applications

High Resolution Image Download MS PowerPoint Slide Here, 3,4-dimethylaniline (3,4-DMA) was selected as a representative organic substance of aniline compounds. A biochar-titanium dioxide (BC-TiO 2 ) composite was prepared by the sol–gel method to investigate its adsorption ability toward the 3,4-DMA compound. Simultaneously, the prepared composite’s adsorption ability and physical and physicochemical properties were also investigated. The isotherm studies confirmed that the adsorption of 3,4-DMA on both BC and BC-TiO 2 composite agrees with the Langmuir and Toth adsorption models, which means the formation of a monolayer of 3,4-DMA on the surface. The maximum adsorption capacity of 3,4-DMA was 322.58 mg g –1 and 285.71mg g –1 for BC and BC-TiO 2, respectively. Furthermore, the adsorption kinetics reveals that the adsorption process of 3,4-DMA on BC and the BC-TiO 2 composite is controlled by the pseudo-second-order kinetic model with an R 2 of 0.99.