journal6 ›› 2014, Vol. 35 ›› Issue (4): 69-73.DOI: 10.3969/j.issn.1007-2985.2014.04.016

• 生物与化学 • 上一篇    下一篇

阳极液提取Mn2+和NH3-N的影响因素及其分析

费讲驰,范丹,滕瑶,何则强,熊利芝   

  1. (吉首大学生物资源与环境科学学院,湖南 吉首 416000)
  • 出版日期:2014-07-25 发布日期:2014-07-21
  • 通讯作者: 熊利芝(1974-),女,湖南益阳人,吉首大学生物资源与环境科学学院副教授,博士,主要从事功能材料研究.
  • 作者简介:费讲驰(1990-),男,江西上饶人,吉首大学生物资源与环境科学学院生态学专业硕士生,主要从事污染生态学研究
  • 基金资助:

    国家自然科学基金资助项目(51142001,51262008,51202087,51364009);湖南省自然科学基金重点资助项目(12JJ2005);湖南省教育厅重点资助项目(12A109);湖南省科技计划重点资助项目(2012GK2017);湖南省高校创新平台资助项目(13K094);湖南省大学生研究性学习和创新性实验计划项目(JSU-CX-2011-41)

Extraction of Mn2+ and NH3-N from Eletrolytic Manganese Slag Using Anolyte as Extractant and Its Kinetic Study

 FEI  Jiang-Chi, FAN  Dan, TENG  Yao, HE  Ze-Qiang, XIONG  Li-Zhi   

  1. (College of Biology and Environmental Science,Jishou University,Jishou 416000,Hunan China)
  • Online:2014-07-25 Published:2014-07-21

摘要:以阳极液作为提取剂,从电解锰渣中提取Mn2+和NH3-N,考察了液固比、反应温度和反应时间等3个因素对Mn2+和NH3-N提取效果的影响.实验结果表明,阳极液对Mn2+的提取效果明显优于对NH3-N的提取效果.Mn2+的最佳提取条件是液固比( mL/g) 为10∶1,在50 ℃下反应30 min,提取率达72.1%;NH3-N的最佳提取条件是液固比为10∶1,在50 ℃下反应40 min,提取率达45.6%.动力学研究表明,阳极液对电解锰渣中Mn2+的提取反应符合拟一级动力学方程,而对NH3-N的提取反应符合拟二级动力学方程.

关键词: 电解锰渣, 锰离子, 氨氮, 阳极液, 动力学

Abstract: Extraction of Mn2+ and NH3-N from electrolytic manganese slag with anolyte as extractant was studied.The influence of liquid-solid ratio,extraction time,temperature on the extraction efficiency of Mn2+ and NH3-N was investigated.Results indicated that the extraction efficiency of Mn2+ with anolyte was better than that of NH3-N.The optimum extraction efficiency of Mn2+ was 72.1% which was obtained when the liquid-solid ratio (mL/g) was 10∶1 at 50 ℃ for 30 min.The optimum extraction efficiency of NH3-N 45.6% which was obtained when the liquid-solid ratio was 10∶1 at 50 ℃ for 40 min.Kinetic study suggests that the extraction of Mn2+ from electrolytic manganese slag with anolyte as extractant accords with pseudo first-order kinetics equation,while that of NH3-N agrees well with pseudo second-order kinetics equation.

Key words: eletrolytic manganese slag, Mn2+, NH3-N, anolyte, kinetic

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