Adsorption of Phenanthrene in Soil to Biochar Modified by β-Cyclodextrin  

作　　者：Wanke Chen Qing Guo Xiaoyan Wang Xiao Wang Jing Yuan Qianfeng Zhang Wanke Chen;Qing Guo;Xiaoyan Wang;Xiao Wang;Jing Yuan;Qianfeng Zhang(Insitute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Maanshan, China;Department of Civil Engineering, Tongling University, Tongling, China;Department of Civil Engineering, Manitoba University, Winnipeg, Canada)

机构地区：[1]Insitute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Maanshan, China [2]Department of Civil Engineering, Tongling University, Tongling, China [3]Department of Civil Engineering, Manitoba University, Winnipeg, Canada

出　　处：《Journal of Materials Science and Chemical Engineering》2024年第9期44-54,共11页材料科学与化学工程（英文）

摘　　要：In this study, the adsorption effect of β-cyclodextrin modified biochar (BC) on phenanthrene (PHE) in contaminated soil was investigated, aiming to provide an efficient and environmentally friendly remediation strategy for Polycyclic Aromatic Hydrocarbons (PAHs) contaminated soil. Through kinetic and isotherm analysis, β-CDBC-CA showed excellent phenanthrene adsorption performance, and the adsorption effect increased with the increase of time and was affected by temperature. The results show that β-CDBC-CA can not only effectively adsorb phenanthrene in soil, but also serve as a surfactant to help desorption phenanthrene adsorbed by soil organic matter and improve the efficiency of microbial degradation. The experimental data showed that the Elovich model could describe the adsorption behavior of β-CDBC-CA on phenanthrene well, while Langmuir and Freundlich models performed better in fitting parameters, revealing the adsorption mechanism of phenanthrene in contaminated soil by β-cyclodextrin-modified biochar. In addition, temperature has a significant effect on the adsorption capacity of β-CDBC-CA, and its application in soil remediation can be optimized by adjusting temperature. This study not only provides new materials and technical means for soil remediation but also provides important data support for an in-depth understanding of the environmental behavior of PAHs. By citing relevant research results, this study further improves the control and understanding of environmental risks of PAHs, which is of great significance for the protection of ecological environment and human health.In this study, the adsorption effect of β-cyclodextrin modified biochar (BC) on phenanthrene (PHE) in contaminated soil was investigated, aiming to provide an efficient and environmentally friendly remediation strategy for Polycyclic Aromatic Hydrocarbons (PAHs) contaminated soil. Through kinetic and isotherm analysis, β-CDBC-CA showed excellent phenanthrene adsorption performance, and the adsorption effect increased with the increase of time and was affected by temperature. The results show that β-CDBC-CA can not only effectively adsorb phenanthrene in soil, but also serve as a surfactant to help desorption phenanthrene adsorbed by soil organic matter and improve the efficiency of microbial degradation. The experimental data showed that the Elovich model could describe the adsorption behavior of β-CDBC-CA on phenanthrene well, while Langmuir and Freundlich models performed better in fitting parameters, revealing the adsorption mechanism of phenanthrene in contaminated soil by β-cyclodextrin-modified biochar. In addition, temperature has a significant effect on the adsorption capacity of β-CDBC-CA, and its application in soil remediation can be optimized by adjusting temperature. This study not only provides new materials and technical means for soil remediation but also provides important data support for an in-depth understanding of the environmental behavior of PAHs. By citing relevant research results, this study further improves the control and understanding of environmental risks of PAHs, which is of great significance for the protection of ecological environment and human health.

关 键 词：PAHS BIOCHAR Β-CYCLODEXTRIN MODIFICATION ADSORPTION Soil Remediation 

分 类 号：O64[理学—物理化学]