高级搜索

腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响

,  ,  ,  , 

downloadPDF

上一篇

下一篇

陈锴, 李义连, 杨国栋, 邓天天, 梁艳燕. 腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响[J]. 环境化学, 2010, 29(2): 231-236.
引用本文: 陈锴, 李义连, 杨国栋, 邓天天, 梁艳燕. 腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响[J]. 环境化学, 2010, 29(2): 231-236.
shu
CHEN Kai, LI Yi-lian, YANG Guo-dong, DENG Tian-tian, LIANG Yan-yan(Graduate. INFlUENCE OF HUMIC ACID ON THE ADSORPTION OF ARSENIC BY SAND COVERED IRON[J]. Environmental Chemistry, 2010, 29(2): 231-236.
Citation: CHEN Kai, LI Yi-lian, YANG Guo-dong, DENG Tian-tian, LIANG Yan-yan(Graduate. INFlUENCE OF HUMIC ACID ON THE ADSORPTION OF ARSENIC BY SAND COVERED IRON[J]. Environmental Chemistry, 2010, 29(2): 231-236.
shu

腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响

  • 1.

    中国地质大学(武汉)研究生院, 武汉, 430074;

  • 2.

    中国地质大学(武汉)环境学院, 武汉, 430074

  • 基金项目:

    国家科技部“863”计划(2007AA06Z333)

INFlUENCE OF HUMIC ACID ON THE ADSORPTION OF ARSENIC BY SAND COVERED IRON

  • 1.

    Graduate School, China University of Geosciences, Wuhan, 430074, China;

  • 2.

    School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China

  • Fund Project:

  • 摘要: 对腐殖酸(HA)进行了成分分析及红外表征,并从HA浓度、pH值、As(Ⅴ)初始浓度等方面,研究了HA对As(Ⅴ)在覆铁砂介质中吸附行为的影响.结果表明,随着HA浓度的升高,总砷去除率逐渐降低.当HA浓度增加到25mg·l-1时,与不存在HA条件下相比,总砷去除率降低了12%左右.溶液pH值影响As(Ⅴ)的去除,pH值从6升高到8时,总砷去除率从52.1%降到了39%.其中的作用机理主要是HA与As(Ⅴ)在覆铁砂表面形成竞争吸附,HA争夺了As(Ⅴ)的吸附点位.此外,HA与Fe(Ⅲ)的络合作用也是导致覆铁砂对砷的去除率降低的一个重要原因.
    Abstract: This work investigated the influence of HAon the adsorption of As(Ⅴ)on sand covered iron through the elemental analysis,FTIRand measurement of HAconcentration,pHand initial As(Ⅴ)concentration.The results indicate that the total arsenic removal rate gradually decreases with the increase of HAconcentration.Compared to the situation without HA,when the concentration of HAincreased to 25mg·l-1 the rate of arsenic removal reduced by 12%.pHalso affected the removal of arsenic.When pHincreased from 6 to 8,the removal rate of arsenic decreased from 52.1% to 39%.The mechanisms of reaction mainly include:(1)HAis preferably to being adsorbed on the surface of sand covered iron compared with As(Ⅴ);(2)HAcomplexation with Fe(Ⅲ)is also an important reason leading to the decrease of arsenic removal rate.
  • 加载中
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  971
  • HTML全文浏览数:  971
  • PDF下载数:  661
  • 施引文献:  0
出版历程
  • 收稿日期:  2009-06-09
陈锴, 李义连, 杨国栋, 邓天天, 梁艳燕. 腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响[J]. 环境化学, 2010, 29(2): 231-236.
引用本文: 陈锴, 李义连, 杨国栋, 邓天天, 梁艳燕. 腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响[J]. 环境化学, 2010, 29(2): 231-236.
shu
CHEN Kai, LI Yi-lian, YANG Guo-dong, DENG Tian-tian, LIANG Yan-yan(Graduate. INFlUENCE OF HUMIC ACID ON THE ADSORPTION OF ARSENIC BY SAND COVERED IRON[J]. Environmental Chemistry, 2010, 29(2): 231-236.
Citation: CHEN Kai, LI Yi-lian, YANG Guo-dong, DENG Tian-tian, LIANG Yan-yan(Graduate. INFlUENCE OF HUMIC ACID ON THE ADSORPTION OF ARSENIC BY SAND COVERED IRON[J]. Environmental Chemistry, 2010, 29(2): 231-236.
shu

腐殖酸对As(Ⅴ)在覆铁砂介质中吸附行为的影响

  • 1.  中国地质大学(武汉)研究生院, 武汉, 430074;
  • 2.  中国地质大学(武汉)环境学院, 武汉, 430074
  • 收稿日期:  2009-06-09
基金项目:

国家科技部“863”计划(2007AA06Z333)

摘要: 对腐殖酸(HA)进行了成分分析及红外表征,并从HA浓度、pH值、As(Ⅴ)初始浓度等方面,研究了HA对As(Ⅴ)在覆铁砂介质中吸附行为的影响.结果表明,随着HA浓度的升高,总砷去除率逐渐降低.当HA浓度增加到25mg·l-1时,与不存在HA条件下相比,总砷去除率降低了12%左右.溶液pH值影响As(Ⅴ)的去除,pH值从6升高到8时,总砷去除率从52.1%降到了39%.其中的作用机理主要是HA与As(Ⅴ)在覆铁砂表面形成竞争吸附,HA争夺了As(Ⅴ)的吸附点位.此外,HA与Fe(Ⅲ)的络合作用也是导致覆铁砂对砷的去除率降低的一个重要原因.

English Abstract

    全文HTML

参考文献 (0)

返回顶部

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心