超声波耦合光催化再生酚饱和活性炭研究
Ultrasonic-coupled photocatalytic regeneration of phenol-saturated activated carbons
许浩 1李金成 1闫博引 1郭雅婧 1郑泽坤 1陈国壮 1宋双 1夏文香1
作者信息
- 1. 青岛理工大学 环境与市政工程学院,青岛 266525
- 折叠
摘要
将超声波与光催化技术耦合(US/UV),对吸附苯酚饱和的活性炭进行再生,对比了光催化、超声波及超声波耦合光催化3种工艺条件下的再生效果,研究了TiO2投加浓度、超声波功率和再生液初始pH值对活性炭再生的影响,并分析了不同工艺再生前后活性炭结构的变化.实验结果表明,US/UV耦合工艺的再生效果优于单独的光催化再生和超声波再生工艺.当TiO2浓度为100 mg/L,超声波功率为100 W,pH为7～9时,US/UV耦合工艺的再生率达到74.51%;并且对活性炭的孔隙结构破坏较小,微孔恢复程度较高,具有再生速率快、再生液苯酚残留浓度低、再生效果稳定的特点.
Abstract
The ultrasound and photocatalytic technology are coupled(US/UV)to regenerate the activated carbon saturated with adsorbed phenol.The regeneration effects under the three process conditions of photocatalysis,ultrasound and ultrasound coupling photocatalysis are compared.The effects of TiO2 addition concentration,ultrasonic power and initial pH of regeneration solution on the regeneration of activated carbon were investigated,and the changes in the structure of activated carbon before and after regeneration by different proces-ses were analyzed.The experimental results show that the regeneration effect of the US/UV coupling process is better than that of the photocatalytic regeneration and ultrasonic regener-ation alone.When the TiO2 concentration was 100 mg/L,the ultrasonic power was 100 W,and the pH was 7-9,the regeneration efficiency of the US/UV coupling process reached 74.51%;the destruction of the pore structure of the activated carbon was small,and the de-gree of recovery of the micropores was high.The US/UV coupling process was characterized by fast regeneration rate,low concentration of the regeneration solution phenol residue,and stable regeneration effect.
关键词
光催化/超声波/US/UV/活性炭再生Key words
photocatalysis/ultrasound/US/UV/activated carbon regeneration引用本文复制引用
基金项目
山东省自然科学基金资助项目(2020ME256)
山东省自然科学基金资助项目(2019MEE097)
出版年
2024
NETL
NSTL
万方数据