首页 | 官方网站   微博 | 高级检索  
     

天然矿物锰矿砂对苯酚的界面吸附与降解研究
引用本文:郑红,汤鸿霄.天然矿物锰矿砂对苯酚的界面吸附与降解研究[J].环境科学学报,1999,19(6):619-624.
作者姓名:郑红  汤鸿霄
作者单位:中科院生态环境研究中心环境水化学国家重点实验室,北京,100085
摘    要:研究了天然矿物锰矿砂对苯酚的界面吸附与降解,结果表明锰矿砂对苯酚具有较强的吸附作用,较高温度,低pH值,固相与苯酚的较高质量比值有利于苯酚的吸附。吸附过程遵循二级反应动力学,吸附等温线为Langmuir型。应用简化的表面络合反应模式,求得了不同条件下的条件稳定常数及吸附苯酚的表面总吸附位。

关 键 词:天然矿物  锰矿砂  苯酚  吸附  降解
收稿时间:1997/11/3 0:00:00
修稿时间:1998/4/22 0:00:00

Adsorption and degradation of phenol on natural manganeseore surfaces
ZHENG Hong and TANG Hongxiao.Adsorption and degradation of phenol on natural manganeseore surfaces[J].Acta Scientiae Circumstantiae,1999,19(6):619-624.
Authors:ZHENG Hong and TANG Hongxiao
Affiliation:Research Centerfor Eco EnvironmentalSciences, Chinese AcademyofSciences, Beijing 100085 and Research Centerfor Eco EnvironmentalSciences, Chinese AcademyofSciences, Beijing 100085
Abstract:Inthispaper,theadsorptionand degradationofphenolon naturalmanganeseore werestudied. Theresultsindicatethat manganeseoreparticlesareexcellentadsorbentsforphenol.Highertemperature, low pHand higher massratio ofsolid/phenolarefavorabletoadsorptionofphenolon manganeseoresur faces.Second order kinetics were observed during adsorption process.The adsorption isotherms are linearised accordingto Langmuir model.Conditionaladsorption constantsandtotal manganese oresurface siteconcentration ofsurfacecomplexesofphenol with manganeseoreparticles werecalculatedbyasimpli fiedsurfacecomplexation model.Removalpercentage ofphenolon manganeseoresurfaces underthe best condition wasover80% ,in whichsunlightphotolysispercentage wasabout6% .p benzoquinone was main oxidized product underacidicpHconditions.Lightisfavorabletotheredox reaction oninterface.Possible degradation mechanisms were discussed.
Keywords:natural minerals  manganese ore  phenol  adsorption  degradation  
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《环境科学学报》浏览原始摘要信息
点击此处可从《环境科学学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号