同济大学学报（自然科学版）2009，Vol.37Issue(10)：1360-1365,6.DOI:10.3969/j.issn.0253-374x.2009.10.016
疏水沸石负载纳米TiO_2光催化去除水中土霉素
Removal of Oxytetracycline in Water by UV/ Hydrophobic Zeolite Loaded with TiO_2
摘要
Abstract
The composite photocatalysts were made by solid dispersion method with hydrophobic Zeolite and nanometer titanium dioxide. The removal of oxytetracycline (OTC) in water by UV/ Hydrophobic Zeolite loaded with different ratio of TiOz was investigated respectively under the irradiation of 32 W low-pressure mercury lamps. The effects of composite photocatalyst quantity, initial OTC concentration and pH were studied. Results show that UV/composite photocatalyst with 40% TiO_2 and 60% hydrophobic Zeolite is the best way to remove OTC in water compared to the others. 99% of OTC (50 mg·L~(-1)) in ultrapure water mixed with 500 mg·L~(-1) composite photocatalyst degrades within 150 min under UV irradiation. And after 6 hours,86% TOC of the OTC solution is removed. It is found that the degradation rate is quicker when the OTC initial concentration is lower and initial pH is higher.关键词
水环境/土霉素/光催化氧化/纳米二氧化钛/疏水沸石Key words
water environment/ oxytetracycline/ photocatalysis/ nanometer titanium dioxide/ hydrophobic zeolite分类
资源环境引用本文复制引用
赵纯,邓慧萍..疏水沸石负载纳米TiO_2光催化去除水中土霉素[J].同济大学学报（自然科学版）,2009,37(10):1360-1365,6.基金项目
建设部水体污染控制与治理科技重大专项资助项目(2008ZX07425-007) （2008ZX07425-007）
