Electrocoagulation of silica nanoparticles in wafer polishing wastewater by a multichannel flow reactor: A kinetic study

Tunghai University Institutional Repository > 工學院 > 環境科學與工程學系所 > 期刊論文 > Item 310901/22485

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://140.128.103.80:8080/handle/310901/22485

题名:	Electrocoagulation of silica nanoparticles in wafer polishing wastewater by a multichannel flow reactor: A kinetic study
作者:	Den, W., Huang, C.
贡献者:	Department of Environmental Science and Engineering, Tunghai University
关键词:	Channel flow;Coagulation;Colloids;Kinetics;Laminar flow;Silica;Wastewater management;Water treatment
日期:	2006
上传时间:	2013-05-21T09:07:54Z (UTC)
摘要:	A simplistic and systematic procedure has been developed for the design and upscaling of a multichannel, continuous-flow electrocoagulation reactor of monopolar configuration for the removal of submicron particles from wastewater. Using wastewater generated from the chemical-mechanical planarization process as the target wastewater, a series of laboratory-scale studies were conducted to determine the required operating conditions for the efficient removal of the ultrafine silica particles. These operating criteria included charge loading (?8 F/m3), current density (ge;5.7 A/m2), hydraulic retention time (ge;60 min), as well as the initial pH (7-10). Furthermore, a steady-state transport equation with second-order reaction kinetics was employed to describe the rate of coagulation as the rate-limiting factor. The actual kinetic constant determined from the laboratory-scale experiments was approximately 1.2 × 10-21 m3/s, which was three orders of magnitude smaller than that calculated based on Brownian coagulation. The model was subsequently validated with a series of experiments using a pilot-scale electrocoagulation reactor geometrically similar to the laboratory-scale reactor with nearly 20 times volumetric scaleup. ? 2006 American Society of Civil Engineers.
關聯:	Journal of Environmental Engineering 132 (12) , pp. 1651-1658
显示于类别:	[環境科學與工程學系所] 期刊論文

文件中的档案:

档案	大小	格式	浏览次数
index.html	0Kb	HTML	204	检视/开启

在THUIR中所有的数据项都受到原著作权保护.

数据加载中.....