新生MnO_2对直接染料废水的脱色作用  

Decolorization of Direct Dyestuff Wastewater by Fresh MnO_2

作　　者：蒋兰宏[1] 马子川[1] 董丽丽[1] 

机构地区：[1]河北师范大学化学学院,石家庄050091

出　　处：《城市环境与城市生态》2002年第2期10-12,共3页Urban Environment & Urban Ecology

基　　金：河北省科技攻关计划项目 (995 470 12D) ;河北省教育厅科研基金 (990 2 3 8)

摘　　要：以化学法合成的新生MnO2 作吸附剂 ,对直接桃红 12B(Directred 12B)、直接大红 4B(Directreb 4B)、直接耐晒蓝B2 RL(DirectFastblueB2 RL)染料废水进行脱色研究 ,探讨了影响吸附的因素。结果表明 :新生Mn0 2 对三种染料的吸附符合Langmuir吸附等温式 ,吸附速率大 ,在适宜条件下对直接桃红、直接大红、直接耐晒蓝的脱色率分别为 95 .5 %、96 .2 %和 98.9%In this paper, the decolorization efficiency of aqueous solutions of Direct Red 12B, Direct Red 4B and Direct Fast blue B 2R L with the fresh MnO 2 as an adsorbent synthesized by chemical process was studied. Influencing factors of adsorption were investigated in detail. The experimental results showed that the adsorption of dyes on the fresh MnO 2 was conformed to the Langmuir isotherm equation with high adsorption rate. The efficiencies of decolorization were up to 95.5%(Direct Red 12B),96.2%(Direct Red 4B) and 98.9%(Direct Fast blue B 2R L) respectively.

关 键 词：染料废水 新生MNO2 直接桃红 直接大红 直接耐晒蓝 吸附作用 脱色 废水处理 

分 类 号：X788[环境科学与工程—环境工程]