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1、AdvancesinEnvironmentalProtection环境保护前沿,2014,4,166-172PublishedOnlineAugust2014inHans.http://www.hanspub.org/journal/aephttp://dx.doi.org/10.12677/aep.2014.44023TheCharacteristicsofPhosphateAdsorptiononSurfaceSedimentsinEstuaryShuhuiLiu1,JianZhang2,XilaiZheng3,4,JianLi11QingdaoEntry-ExitInsp
2、ectionandQuarantineBureau,Qingdao2QingdaoPONYTest,Qingdao3KeyLaboratoryofMarineEnvironmentalScienceandEcology,MinistryofEducation,OceanUniversityofChina,Qingdao4CollegeofEnvironmentalScienceandEngineering,OceanUniversityofChina,QingdaoEmail:zjkadan@163.comthstthReceived:Jun.20,2014;revised:J
3、ul.21,2014;accepted:Jul.28,2014Copyright©2014byauthorsandHansPublishersInc.ThisworkislicensedundertheCreativeCommonsAttributionInternationalLicense(CCBY).http://creativecommons.org/licenses/by/4.0/AbstractTheadsorptionkineticsandthermodynamicsofphosphateonto3typicalsurfacesedimentsfromtheest
4、uaryofLiCunRiverandtheinfluencingoftemperatureandsalinityonkineticswereinves-tigated.Theadsorptionkineticsprocesscanbedividedinto3phase:fastadsorptionstage(0-1h),slowadsorptionstage(1-12h)andbalancestage(>12h).Increasedsalinitycaninhibitphos-phateadsorptionandincreasedtemperaturepromotesthea
5、dsorption.Thereactionrateofthesystemspeededupandthebalancetimeadvancedwhenthetemperatureimproved.Adsorption3−isothermalcurveofPO-PcorrespondswithLangmuirisothermaladsorptionequation.The4criticalconcentrationsofadsorption-desorptionofthethreesedimentssampleswere:0.034mg∙L−1,0.289mg∙L−1and0.06
6、7mg∙L−1.KeywordsEstuary,Sediments,Phosphate,Adsorption河口感潮区表层沉积物3−-P的吸附特征PO4123,41刘书慧,张健,郑西来,李健1青岛出入境检验检疫局,青岛1663−河口感潮区表层沉积物PO-P的吸附特征42青岛谱尼测试有限公司,青岛3中国海洋大学,海洋环境与生态教育部重点实验室,青岛4中国海洋大学,环境科学与工程学院,青岛Email:zjkadan@163.com收稿日期:2014年6月20日;修回日期:2014年7月21日;录用日期:2014年7月28日摘要3−本文研究了胶州湾李村河河口感潮区3个典型采样点表层沉
7、积物对PO-P吸附动力学和热力学行为,并43−3−探讨了盐度、温度对PO-P吸附动力学过程的影响。PO-P吸附动力学过程可分为3个阶段:0~1h快443−速吸附阶段,1~12h缓慢吸附阶段,12h之后平衡阶段;盐度升高对PO-P吸附则呈现抑制作用;温43−3−度升高有利于PO-P的吸附作用,温度升高加快了吸附速率,使固液体系更快的达到平衡。PO-P吸443−附等温曲线符合Langmuir等温吸附方程,三个取样点的PO-P的吸附–解吸临界浓度分别为:0.0344mg∙L−1、0.289mg∙L