Biosorption Capacity for Cadmium of Brown Seaweed

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1、WaterAirSoilPollut(2011)221:137–144DOI10.1007/s11270-011-0776-yBiosorptionCapacityforCadmiumofBrownSeaweedSargassumsinicolaandSargassumlapazeanumintheGulfofCaliforniaMónicaPatrón-Prado&MargaritaCasas-Valdez&ElisaServiere-Zaragoza&TaniaZenteno-Savín&DanielB.Lluch-Cota&LíaMénd

2、ez-RodríguezReceived:13September2010/Accepted:16February2011/Publishedonline:4March2011#SpringerScience+BusinessMediaB.V.2011AbstractBrownalgaeSargassumsinicolaandsorbentbecauseofitshighqmaxandlargebiomassSargassumlapazeanumweretestedascadmiumontheeasterncoastoftheBajaCalifo

3、rniaPeninsula.biosorbentsincoastalenvironmentsclosetonaturalSargassumbiomasswasestimatedat180,000t,withandenrichedareasofphosphoriteore.DifferencesinS.sinicolacontributingtoover70%.theconcentrationofcadmiuminthesebrownalgaewerefound,reflectingthebioavailabilityoftheKeywordsA

4、lginate.Biosorption.Cadmium.Gulfofmetalioninseawateratseveralsites.IntheCalifornia.Sargassumlaboratory,maximumbiosorptioncapacity(qmax)ofcadmiumbythesenonlivingalgaewasdeterminedaccordingtotheLangmuiradsorptionisothermas1Introduction−162.42±0.44mggwiththeaffinityconstant(b)o

5、f0.09and71.20±0.80withbof0.03forS.sinicolaCadmiumintheenvironmenthasbeingincreasingandS.lapazeanum,respectively.Alginateyieldwasbecauseofitsuseinindustrialandagricultural19.16±1.52%and12.7±1.31%,respectively.Al-activities(Ruleetal.2006).HighsolubilityinwaterthoughS.sinicolah

6、adfarlowerbiosorptioncapacityenhanceswidedistributioninaquaticsystemsthanS.lapazeanum,theaffinityforcadmiumforS.(Lockwood1976).Oneofthemostimportantsinicolamakesthisalgamoresuitableasabio-sourcesofcadmiuminaquaticecosystemsismineraldeposits,includingphosphorite,inwhichthisel

7、ementisacommonimpurity(MannandRitchie1995).Oneof::thelargestphosphoritedepositsintheworldislocatedM.Patrón-PradoE.Serviere-ZaragozaT.Zenteno-Savín:D.B.Lluch-Cota:intheBajaCaliforniaPeninsulaofMexico(RileyL.Méndez-Rodríguez(*)1989).AphosphoritemineislocatedclosetotheCentrodeI

8、nvestigacionesBiológicasdelNoroestecoast,about50kmnorthwestofthecityofLaPaz