J4

• • 上一篇    下一篇

自然水体生物膜吸附Mn2+过程中吸附液pH值的变化

董德明, 张菁菁, 李 鱼, 花修艺, 杨 帆, 刘 淼, 张君枝   

  1. 吉林大学环境与资源学院, 长春 130023
  • 收稿日期:2002-08-11 修回日期:1900-01-01 出版日期:2003-04-26 发布日期:2003-04-26
  • 通讯作者: 董德明

Changes of Solution pH During Mn2+ Adsorption to the Natural Surface Coatings

WTDONG De-ming, ZHANG Jing-jing, LI Yu, HUA Xiu-yi, YANG Fan, LIU Miao, ZHANG Ju n-zhi   

  1. College of Environment and Resources, Jilin University, Changchun 130023, China
  • Received:2002-08-11 Revised:1900-01-01 Online:2003-04-26 Published:2003-04-26
  • Contact: WTDONG De-ming

摘要: 利用自然水体培养的生物膜进行了微量矿物盐溶液、 ddH2O体系的Mn2+的吸附实验, 并用无Mn2+的微量矿物盐溶液、 ddH2O作对比, 研究自然水体生物膜吸附Mn2+过程中吸附液pH值的变化. 结果表明, 在吸附过程中, 4种吸附液的pH值都是先升后降至稳定, 微量矿物盐体系的p H值高于相应的ddH2O体系的pH值, 无Mn2+吸附液的pH 值高于有Mn2+的吸附液的pH值, 且可用氧化物表面吸附的配合模式描述自然水体生物膜吸附Mn2+过 程中吸附液pH值的变化.

关键词: 自然水体, 生物膜, Mn2+, pH值, 吸附机制

Abstract: Adsorption of Mn2+ to natural surface coat ings developed in the South Lake was carried out for the purpose of investigatin g pH changes of different systematic solutions, which were prepared by minimal m ineral salts (MMS) and distilled-deionized water (dd water) with Mn2+ present and absent, respectively. The results show that the pH values of the four solutions employed increased remarkably during the initial adsorption perio d first, subsequently decreased to a stationary value gradually. In addition, the pH values of MMS solutions were higher than those of dd water solutions without MMS accordingly, and solutions without Mn2+ higher than those of solutions with Mn2+ presen t. The variety of pH in the study could be described by an oxide surface adsorp tion conjugate model.

Key words: natural water, surface coating, Mn2+, pH, adsorption mechanism

中图分类号: 

  • X132