δMnO_2吸附氧化模拟罗丹明B染料废水的机理  

Adsorption and Oxidation Mechanisms of Rhodamine B Removal by 8 Manganese Dioxide

作　　者：蔡冬鸣[1] 李圭白[1] 任南琪[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《哈尔滨理工大学学报》2007年第2期83-86,共4页Journal of Harbin University of Science and Technology

基　　金：黑龙江省政府博士后资助基金

摘　　要：δMnO_2可有效地去除水中的阳离子染料罗丹明B;pH=7时,200mg/L染料溶液的处理剂投量为3000mg/L,振荡30min后,染料去除率为96．6%,TOC去除率为62%．通过测定液相TOC去除率、固相TOC含量、不同pH值和处理剂负荷下的紫外——可见吸收曲线、染料和反应产物的FT-IR谱图以及吸附剂的X射线光电子能谱,初步研究了去除机理．结果表明,去除过程为吸附——氧化综合过程．δ- MnO2 can remove Rhodamine B, a cationic dyestuff, effectively. The removal of Rhodamine B and TOC was 96.6% and 62% under the condition pH = 7, dye concentration = 200mg/L, the dose of δMnO2 = 3 000mg/L and contact time = 30min. TOC removal in the solution, solid TOC content, UV - vis spectrum under dif- ferent pH value and solid loads, Rhodamine B and resultant FT - IR spectrum and X - ray photoelectronic spectroscopy for δ - MnO2 after adsorption were characterized. Preliminary research on the removal mechanism was investigated. It is shown that the dye removal is an integrated process of adsorption and oxidation.

关 键 词：二氧化锰 阳离子染料 罗丹明B 吸附 氧化 印染废水 

分 类 号：X13[环境科学与工程—环境科学]