环境工程学报2024，Vol.18Issue(1)：110-120,11.DOI:10.12030/j.cjee.202308121
Fe-PG紫外光辅助活化H2O2流化床高效降解水杨酸
Highly efficient degradation of salicylic acid by the Fe-PG UV-assisted activation of H2O2 fluidized bed
摘要
Abstract
Aiming at the difficulty of catalyst recovery in conventional photocatalytic technology and serious residual H2O2 pollution in ultraviolet/hydrogen peroxide(UV/H2O2)technology,iron-loaded porous foamed glass(Fe-PG)was prepared by an impregnation method,and it was used in the ultraviolet light-assisted activation of H2O2 fluidized bed to degrade salicylic acid(SA).The results show that under the same experimental conditions,the SA degradation rate,mineralization rate and H2O2 utilization rate by Fe-PG UV-assisted activation of H2O2(UV/H2O2/Fe-PG)fluidized bed process were significantly better than UV/H2O2.Taking operating costs into consideration,the optimal hydraulic residence time(HRT)was 40 min,the optimal H2O2 dosage was 3 mmol·L-1,and the optimal Fe-PG expansion rate was 30％.UV/H2O2/Fe-PG fluidized bed process had a strong tolerance to the initial concentration,pH and salt ions of SA solution.After 30 days of continuous operation,the degradation rate of SA remained above 98％,and the mineralization rate was still as high as 78.1％.The main active substances for the degradation of SA by the UV/H2O2/Fe-PG fluidized bed process were·OH,O2·-and h+,and the degradation process conformed to the first-order kinetics.The research results provide a technical support for the engineering application of photocatalytic-assisted activation of H2O2 fluidized bed technology.关键词
Fe-PG/光催化流化床/水杨酸/活性物质Key words
Fe-PG/photocatalytic fluidized bed/salicylic acid/active species分类
资源环境引用本文复制引用
刘营营,张玉生,王全勇,谢海涛,张文郁..Fe-PG紫外光辅助活化H2O2流化床高效降解水杨酸[J].环境工程学报,2024,18(1):110-120,11.基金项目
山东省企业技术创新项目(202250101281) （202250101281）
