Aqueous-adsorption-and-removal-of-organic-contaminants-by-carbon-nanotubes

ReviewAqueousadsorptionandremovaloforganiccontaminantsbycarbonnanotubesJin-GangYua,d,e,⁎,Xiu-HuiZhaoa,e,HuaYanga,e,Xiao-HongChenb,QiaoqinYangc,Lin-YanYua,e,Jian-HuiJiangd,Xiao-QingChena,e,⁎aCollegeofChemistryandChemicalEngineering,CentralSouthUniversity,Changsha,Hunan410083,ChinabCollaborativeInnovationCenterofResource-conserving&Environment-friendlySocietyandEcologicalCivilization,Changsha,Hunan410083,ChinacDepartmentofMechanicalEngineering,UniversityofSaskatchewan,Saskatoon,SKS7N5A9,CanadadCollegeofChemistryandChemicalEngineering,HunanUniversity,Changsha,Hunan410082,ChinaeKeyLaboratoryofResourcesChemistryofNonferrousMetals,MinistryofEducation,CentralSouthUniversity,Changsha,Hunan410083,ChinaHIGHLIGHTS•WesummarizethemostrecentresearchprogressofCNTsforremovaloforganics.•AdsorptionmechanismsbetweenCNTsandorganicswereelucidatedindetail.•ThedevelopingtrendsandprospectsofCNTsforremovaloforganicswerediscussed.abstractarticleinfoArticlehistory:Received16September2013Receivedinrevisedform26February2014Accepted27February2014Availableonline18March2014Keywords:AdsorptionApplicationCarbonnanotubesOrganicpollutantsRemovalOrganiccontaminantshavebecomeoneofthemostseriousenvironmentalproblems,andtheremovaloforganiccontaminants(e.g.,dyes,pesticides,andpharmaceuticals/drugs)andcommonindustrialorganicwastes(e.g.,phenolsandaromaticamines)fromaqueoussolutionsisofspecialconcernbecausetheyarerecalcitrantandpersistentintheenvironment.Inrecentyears,carbonnanotubes(CNTs)havebeengraduallyappliedtotheremovaloforganiccontaminantsfromwastewaterthroughadsorptionprocesses.Thispaperreviewsrecentprogress(145studiespublishedfrom2010to2013)intheapplicationofCNTsandtheircompositesfortheremovaloftoxicorganicpollutantsfromcontaminatedwater.Thepaperdiscussesremovalefficienciesandadsorptionmechanismsaswellasthermodynamicsandreactionkinetics.CNTsarepredictedtohaveconsider-ableprospectsforwiderapplicationtowastewatertreatmentinthefuture.©2014ElsevierB.V.Allrightsreserved.Contents1.Introduction..2422.Applica