Applications of TiO2-CeO2/bamboo-biochar particle electrodes to enhanced treatment of phenol wastewater in a three-dimensional electrochemical reactors

被引:0
作者
Zhang, T. [1 ]
Liu, Y. [2 ]
Li, S. [2 ]
Wang, W. [1 ]
Qin, Y. [3 ]
Zhen, S. [1 ]
Zhou, Y. [1 ]
机构
[1] Yancheng Inst Technol, Coll Civil Engn, Yancheng 224051, Peoples R China
[2] Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Peoples R China
[3] Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing Key Lab Source Control Technol Water Pollu, Beijing 100083, Peoples R China
关键词
Biochar; Electrolysis; Particle electrodes; Phenol; Three-dimensional electrode reactors; SELECTIVE CATALYTIC-REDUCTION; ELECTROCATALYTIC REMOVAL; NANOCOMPOSITE; OXIDATION;
D O I
10.1007/s13762-024-05930-z
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Phenolic compounds in wastewater are highly biotoxic and harmful to the environment and human health. Due to the shortcomings of traditional treatment methods, the three-dimensional electrochemical reactors (3DERs) have been widely studied in phenol wastewater treatment due to their high efficiency, simple operation and low chemical addition. Particle electrodes are crucial, and TiO2-modified particle electrodes have been shown to contribute to the oxidation of pollutants. The TiO2-CeO2 modified bamboo biochar particle electrodes (BCPEs) were newly prepared by sol-gel and calcination two-step method, and their surface microscopic morphologies, crystal structures, physical and chemical properties were determined by characterization. Electrochemical experiments showed that the mass transfer rate (nu = 15.47 x 10(-3)) and the electrochemically active surface area (ECSA) of TiO2-CeO2 modified BCPEs were larger than that of TiO2/BC and BCPEs. Optimal electrolysis conditions were obtained by the corresponding surface model: the Ti/Ce molar ratio of 10, current density (j) of 32 mA/cm(2), the initial phenol concentration of 100 mg L-1, and the phenol removal reached 83.02%. After 120 min electrolysis of phenol wastewater with an initial concentration of 100 mg L-1 at j = 30 mA/cm(2) in the 3DERs, the phenol removal reached 81.69%. The experimental results showed that the TO2-CeO2 modified BCPEs realized the efficient treatment of phenol wastewater in the 3DERs. This study provides theoretical and technical support for the application of three-dimensional electrodes to the advanced treatment of phenol wastewater.
引用
收藏
页码:4293 / 4306
页数:14
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