活性染料的溶剂浮选动力学研究及其直接有机相光度法测定
Kinetic Study on the Solvent Floatation of Reactive Dyestuff and Its Direct Photometric Determination in the Organic Phase
摘 要
以活性艳红X-3B作为研究实样,对活性染料的溶剂浮选动力学进行了初步研究.试验表明:在较低的流速下,速率常数的增加与气体流速成正比,溶剂浮选过程中-ln(At/A0)与时间的关系符合一级动力学方程.所选3种活性染料同时进行气浮溶剂浮选,其萃取率均大于96%;与常用的溶剂萃取法相比较,溶剂浮选法具有富集倍数大,回收率高,溶剂用量少等优点.将浮选后有机相直接用于光度法分析.将此方法应用于测定某印染厂废水中活性艳红X-3B的含量,测得其浮选率为98.1%,回收率为93.6%.
动力学研究
光度法
活性染料
Solvent floatation
Kinetic study
Photometry
Reactive dyestuff
Abstract
It was found by the kinetic study of solvent floatation of reactive dyestuff (taking the reactive scarlet red X-3B as an object in the study),that under a relatively low flow-rate,the increase of speed constant was directly proportional to the flow-rate of the floatation gas (i.e.nitrogen),and in the course of solvent floatation,the relationship between -ln(At/A0) and t was in conformity to the 1st order kinetic equation.Rate of extraction of 3 different reactive dyestuffs separated by the solvent floatation was determined in mixtures,the values obtained were all over 96%.The solvent floatation was proved to have large multiple factor of enrichment,high recovery and less consumption of solvents,as compared with the conventional solvent extraction.The reactive dyestuff floated in the organic phase was determined directly in it by photometry.A sample of waste water from a dyeing mill was analyzed by the proposed method for the content of scarlet red X-3B,giving values of floatation rate and recovery of 98.1% and 93.6% respectively.
中图分类号 O657.31
所属栏目 工作简报
基金项目 湖北省教育厅重点项目资助(D200617005)
收稿日期 2007/12/25
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备注李海燕(1963-),女,河北人,教授,主要从事水处理及水质分析工作.
引用该论文: LI Hai-yan. Kinetic Study on the Solvent Floatation of Reactive Dyestuff and Its Direct Photometric Determination in the Organic Phase[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2009, 45(2): 166～168
李海燕. 活性染料的溶剂浮选动力学研究及其直接有机相光度法测定[J]. 理化检验－化学分册, 2009, 45(2): 166～168
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【3】李松田,邢朝晖,闫永胜.气浮溶剂浮选光度法测定食品中痕量SO3-2的研究[J].理化检验-化学分册,2005,41(2):77-80．
【4】董慧茹,王士辉.溶剂浮选分离富集麻黄草中有效成分[J].分析化学,2004,32(4):503-506．
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【7】李海燕,阮新潮,曾庆福.气浮缔合物溶剂浮选光度法测定印染废水中染料含量[J].工业水处理,2006,26(12):67-69．
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