环境工程学报2025，Vol.19Issue(4)：876-888,13.DOI:10.12030/j.cjee.202411094
空气微纳米气泡促进Y沸石分子筛吸附四环素
Enhancement of tetracycline adsorption on Y zeolite by air micro-nanobubbles
摘要
Abstract
Air micro-nanobubble(ANB)technology was used to enhance the adsorption of tetracycline(TC)on Y zeolite(YZ)in water.The effects of ANB generation temperature,solution pH,and ionic strength on performance of ANB in promoting TC adsorption was investigated.Results showed that a low ANB generation temperature(10 ℃)and neutral solution(pH=7)were optimal for ANB-enhanced TC adsorption on YZ.The maximum adsorption capacity of YZ to TC reached 34 mg·g-1,with a 33％enhancement due to ANB.Between pH 3 and 10,the ANB-enhanced effect increased with pH at first and then declined,peaking at pH=7.ANB mitigated the competitive adsorption effects of cations(Na+,K+,and Ca2+),increasing the adsorption capacity of YZ in the ANB system to 19 mg·g-1,compared to 13 mg·g-1 in the control.In contrast,the anions(NO3-and SO42-)had no significant impacts on YZ adsorption toward TC.Tests in real water matrices,such as potable water and secondary tank effluent,demonstrated a significant adsorption enhancement in ANB system,ranging from 8％to 30％.Various characterization techniques,including Nanosight,XPS,FTIR,and UV-Vis,along with adsorption modeling,were employed to explore the underlying mechanisms.Adsorption in the ANB system followed pseudo-second-order kinetics and the Freundlich model,suggesting a multi-layered,heterogeneous process involving both physical and chemical interactions.The intra-particle diffusion model pointed out that the adsorption process was controlled by liquid film diffusion and intraparticle diffusion.ANB significantly improved the adsorption by increasing active adsorption sites and promoting the migration of TC molecules,the main mechanisms of which are pore and surface adsorption effects,complexation,hydrogen bonding,and electrostatic interactions.This study aims to provide a green,efficient,and environmentally safe approach for tackling antibiotic pollution in water.关键词
微纳米气泡/Y沸石分子筛/吸附/四环素Key words
micro-nanobubble/Y zeolite/adsorption/tetracycline分类
资源环境引用本文复制引用
岑汶禧,王帮国,黄雨薇,叶圣滢,MUHAMMAD Yar,徐睿,唐颖,王丽静..空气微纳米气泡促进Y沸石分子筛吸附四环素[J].环境工程学报,2025,19(4):876-888,13.基金项目
中央高校基本科研业务费专项资金(E3E40504X2) （E3E40504X2）
