无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2012, Vol. 44 ›› Issue (6): 43-.

• 论文 • 上一篇    下一篇

泡沫分离法回收水溶液中微量钼(Ⅵ)的研究

张翰林,张永强,王 静,时美玲,赵孝先   

  1. 燕山大学环境与化学工程学院,河北秦皇岛066004
  • 发布日期:2012-06-20

Study on recovering trace Mo(Ⅵ) from aqueous solution by foam fractionation method

ZHANG  Han-Lin, ZHANG  Yong-Qiang, WANG  Jing, SHI  Mei-Ling, ZHAO  Xiao-Xian   

  1. School of Environmental and Chemical Engineering, Yanshan University,Qinhuangdao 066004,China
  • Published:2012-06-20

摘要: 以十六烷基三甲基氯化铵(CTAC)为表面活性剂,采用自制的泡沫分离塔回收水溶液中的微量钼(Ⅵ),考察了溶液pH、空气流量、表面活性剂质量浓度等对钼(Ⅵ)回收率和富集率的影响,并对该过程进行动力学分析。实验结果表明:随溶液pH增加,钼(Ⅵ)的富集率和回收率均先增加后减少;随CTAC浓度增加,钼(Ⅵ)的回收率增加而富集率减少;随空气流量增加,钼(Ⅵ)的富集率减少而回收率先增加后减少。在溶液pH为9、气体流量为 200 mL/min、表面活性剂质量浓度为0.30 g/L条件下,钼(Ⅵ)的回收率达到90%,富集倍数达到10倍。动力学分析表明,泡沫分离钼(Ⅵ)的过程是零级动力学过程,拟合方程为ρ=-0.288 8t+4.290 4,R2=0.993 8。

关键词: 泡沫分离, CTAC,

Abstract: Trace Mo(Ⅵ) in aqueous solution was recovered by home-made foam fractionation tower with CTAC as the surfactant.Influences of pH of solution,air flow,and mass concentration of CTAC etc. on recovery rate and enrichment rate of Mo(Ⅵ) were investigated and the kinetics analysis was also made.Experimental results showed that both the recovery and enrichment rates increased at first and then decreased with the increasing of pH;the recovery rate increased but enrichment rate decreased with the increasing of CTAC concentration;the enrichment rate decreased,and the recovery rate increased at first and then decreased with the increasing of air flow.Recovery rate and enrichment rate of Mo(Ⅵ) were up to 90% and 10 times,respectively,under the conditions of pH=9,air flow of 200 mL/min,and CTAC mass concentration of 0.30 g/L.The kinetics analysis indicated that the fractionation process was zero order process and the fitted equation was ρ=-0.288 8t+ 4.290 4,R2=0.993 8.

Key words:  , foam fractionation;CTAC;molybdenum

中图分类号: