标题：Absorption and decomposition of ozone in a three-phase split-rectangular airlift reactor under ultrasonic irradiation作者：Xu, Yin; Zhong, Xin; Zhang, Hui

来源出版物：WATER SCIENCE AND TECHNOLOGY 卷：73 期：8 页码：1796-1801 DOI: 10.2166/wst.2016.023 出版年：APR 2016

摘要：Ozone absorption was investigated in a three-phase split-rectangular airlift reactor under ultrasonic irradiation using gamma-Al2O3 as catalyst. The reactor consisted of a square column (50 x 50 mm) with the height of 120 mm, divided into a riser and a downcomer by a baffle, 50 mm in width, 4 mm in thickness and 50 mm in total height. An absorption kinetic model was proposed to determine the volumetric mass transfer coefficient of ozone k(L)a(A). The results showed that kLaA increased from 0.409 to 0.712 min(-1) as power density rose from 27.2 to 100.3 W L-1, comparing with 0.242 min(-1) in the absence of ultrasonic irradiation. The increase in gas flow rate and catalyst loading also favored the increase of kLaA. The degassing effect due to ultrasonic irradiation could be ignored in the ozone absorption process.

入藏号：WOS:000374979500004

文献类型：Article

语种：English

作者关键词：absorption, gamma-Al2O3, kinetics, ozone, self-decomposition, ultrasound

扩展关键词：LIQUID MASS-TRANSFER; CATALYTIC OZONATION; AQUEOUS-SOLUTION; SONOCHEMICAL REACTORS; OXALIC-ACID; WATER; TETRACYCLINE; DEGRADATION; REMOVAL; CARBON

通讯作者地址：Zhang, H, Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

电子邮件地址：eeng@whu.edu.cn

地址： [Xu, Yin; Zhong, Xin; Zhang, Hui] Wuhan Univ, Dept Environm Engn, POB C319 Luoyu Rd 129, Wuhan 430079, Peoples R China.

研究方向：Engineering; Environmental Sciences & Ecology; Water Resources

ISSN：0273-1223

eISSN: 1996-9732

影响因子（2014）：1.106