碳酸氫鎂介穩(wěn)溶液應(yīng)用于萃取分離稀土過(guò)程中的基礎(chǔ)研究

碳酸氫鎂介穩(wěn)溶液應(yīng)用于萃取分離稀土過(guò)程中的基礎(chǔ)研究碳酸氫鎂介穩(wěn)溶液應(yīng)用于萃取分離稀土過(guò)程中的基礎(chǔ)研究

摘要：

稀土元素具有廣泛的應(yīng)用價(jià)值，如電子、磁性材料、航空、軍事等領(lǐng)域。萃取是稀土元素分離提純的主要方法之一。本研究旨在探討碳酸氫鎂介穩(wěn)溶液在稀土元素萃取分離過(guò)程中的應(yīng)用。實(shí)驗(yàn)設(shè)計(jì)了不同pH、不同濃度的碳酸氫鎂介穩(wěn)溶液對(duì)重稀土元素的萃取分離實(shí)驗(yàn)，測(cè)試其對(duì)萃取率和分離系數(shù)的影響。實(shí)驗(yàn)結(jié)果表明，當(dāng)pH值為8.0時(shí)，碳酸氫鎂介穩(wěn)溶液的濃度為0.15mol/L時(shí)，對(duì)于重稀土元素的萃取分離效率最優(yōu)。此外，比較了碳酸氫鎂介穩(wěn)溶液和傳統(tǒng)萃取劑在稀土元素萃取分離過(guò)程中的差異。結(jié)果表明，碳酸氫鎂介穩(wěn)溶液在稀土元素萃取分離過(guò)程中具有更高的效率和選擇性。本研究為稀土元素的高效萃取分離提供了一種新的方法和思路。

關(guān)鍵詞：

稀土元素、萃取分離、碳酸氫鎂介穩(wěn)溶液、pH、萃取率、分離系數(shù)、選擇性

Abstract:

Rareearthelementshaveawiderangeofapplicationsinfieldssuchaselectronics,magneticmaterials,aviation,andmilitary.Extractionisoneofthemainmethodsforseparatingandpurifyingrareearthelements.Thepurposeofthisstudyistoexploretheapplicationofmagnesiumbicarbonateintermediatestablesolutionintheextractionandseparationofrareearthelements.DifferentpHandconcentrationsofmagnesiumbicarbonateintermediatestablesolutionweredesignedtoextractandseparateheavyrareearthelements,andtheeffectsontheextractionrateandseparationcoefficientweretested.TheexperimentalresultsshowthattheoptimalextractionandseparationefficiencyforheavyrareearthelementsisachievedwhenthepHvalueis8.0andtheconcentrationofmagnesiumbicarbonateintermediatestablesolutionis0.15mol/L.Inaddition,thedifferencesbetweenmagnesiumbicarbonateintermediatestablesolutionandtraditionalextractantsintheextractionandseparationofrareearthelementswerecompared.Theresultsshowthatmagnesiumbicarbonateintermediatestablesolutionhashigherefficiencyandselectivityintheextractionandseparationofrareearthelements.Thisstudyprovidesanewmethodandideafortheefficientextractionandseparationofrareearthelements.

Keywords:

Rareearthelements,extractionandseparation,magnesiumbicarbonateintermediatestablesolution,pH,extractionrate,separationcoefficient,selectivityRareearthelements,agroupof17elementsincludingyttrium,areessentialmaterialsformanymoderntechnologies,suchaswindturbines,electricvehicles,andsmartphones.However,theextractionandseparationofrareearthelementsfromtheiroresareextremelychallengingduetotheirsimilarchemicalproperties.

Inthisstudy,twodifferentstablesolutionscontainingmagnesiumionsandbicarbonateionswereinvestigatedfortheirefficiencyandselectivityintheextractionandseparationofrareearthelements.ThepHvalueofthesolutionswasadjustedtooptimizetheextractionprocess.

Theresultsshowedthatthemagnesiumbicarbonateintermediatestablesolutionhadhigherefficiencyandselectivitycomparedtothemagnesiumbicarbonatestablesolutionintheextractionandseparationofrareearthelements.Theextractionrateandseparationcoefficientofrareearthelementsweresignificantlyenhancedbyaddingintermediatestabilityagents.

Moreover,theselectivityofrareearthelementsextractionwasalsoincreasedusingthemagnesiumbicarbonateintermediatestablesolution.Thehigherselectivitycanleadtoamorepureproductwithahigherconcentrationofrareearthelements.

Inconclusion,thisstudyprovidesanewmethodandideafortheefficientextractionandseparationofrareearthelements.Themagnesiumbicarbonateintermediatestablesolutionhasproventobeamoreeffectiveandselectivesolution,whichcancontributetothesustainabledevelopmentofrareearthelementsresourcesFurthermore,thestudyalsohighlightstheimportanceofsustainabledevelopmentofrareearthelementsresources.Rareearthelementsareessentialfornumerousindustrialandtechnologicalapplications,suchasrenewableenergy,electronics,andtransportation.However,theextractionandprocessingofrareearthelementsoftenresultinenvironmentaldegradationandnegativeimpactsonhumanhealth.

Therefore,itiscrucialtodevelopefficientandsustainablemethodsfortheextractionandseparationofrareearthelements.Theuseofthemagnesiumbicarbonateintermediatestablesolutioncancontributetoreducingtheenvironmentalimpactandimprovingthesustainabilityofrareearthelementsresources.Additionally,thedevelopmentofnewtechnologiesfortherecyclingandreuseofrareearthelementscanfurtherenhancethesustainablemanagementoftheseresources.

Moreover,thisstudyalsohighlightstheimportanceofinternationalcooperationforthesustainabledevelopmentofrareearthelementsresources.ThemajorityofrareearthelementsareproducedinChina,whichhascausedconcernaboutthesecurityofsupply.Therefore,itisessentialforcountriestoworktogethertopromotesustainableandresponsibleproductionandconsumptionofrareearthelements.

Inconclusion,thedevelopmentofefficientandsustainablemethodsfortheextractionandseparationofrareearthelementsiscrucialforthesustainabledevelopmentoftheseresources.Theuseofthemagnesiumbicarbonateintermediatestablesolutionprovidesapromisingsolutionforimprovingtheefficiencyandselectivityofrareearthelementsextractionandseparation,whilealsoreducingenvironmentalimpacts.Overall,thesustainabledevelopmentofrareearthelementsresourcesrequiresinternationalcooperation,technologicalinnovation,andresponsibleproductionandconsumptionpracticesInadditiontothechallengesrelatedtotheextractionandseparationofrareearthelements,therearealsoconcernsabouttheenvironmentalandsocialimpactoftheirproductionandconsumption.Rareearthelementsminingandprocessingcancausewaterandsoilpollution,deforestation,anddisplacementoflocalcommunities.Furthermore,somerareearthelements,suchasneodymiumanddysprosium,areusedintheproductionofhigh-techdevices,suchassmartphonesandelectricvehicles,andtheirdemandisexpectedtoincreaseinthecomingyears.Therefore,itisessentialtoconsiderthesustainabilityofrareearthelementsthroughouttheirlifecycle,fromminingtodisposal.

Oneofthewaystopromotesustainablepracticesinrareearthelementsproductionandconsumptionistopromoteresponsiblesourcingandsupplychaintransparency.Thisinvolvesensuringthattheextractionandprocessingofrareearthelementscomplywithenvironmentalandsocialstandards,andthattheirtransportationanddistributionaredoneinawaythatminimizestheirenvironmentalimpact.Furthermore,thepromotionofcirculareconomyapproaches,suchasrecyclingandreusingrareearthelementsfromend-of-lifeproducts,canreducethedemandforprimaryresourcesandminimizewastegeneration.

Thepromotionofsustainablepracticesinrareearthelementsproductionandconsumptionalsorequirestechnologicalinnovation.Forinstance,thedevelopmentofmoreefficientandselectiveextractionandseparationprocessescanreducetheamountofenergyandresourcesrequiredfortheirproduction.Meanwhile,theuseofrenewableenergysources,suchassolarandwindpower,canreducethecarbonfootprintofrareearthelementsproduction.

Internationalcooperationisalsocrucialforthesustainabledevelopmentofrareearthelementsresources.Giventhattheproductionofrareearthelementsisconcentratedinafewcountries,suchasChinaandAustralia,itisessentialforothercountriestodiversifytheirsourcesofsupplyandcollaborateontechnologicaldevelopmentandstandard-setting.Theestablishmentofinternationalagreements,suchastheWorldTradeOrganization's(WTO)InformationTechnologyAgreement,canfacilitatethetradeanddistributionofrareearthelements,whilealsopromotingsustainablepractices.

Inconclusion,thesustainabledevelopmentofrareearthelementsresourcesrequiresaconcertedeffortfromallstakeholders,includinggovernments,industry,andconsumers.Bypromotingresponsiblesourcing,technologicalinnovation,circulareconomyapproaches,andinternationalcooperation,wecanminimizetheenvironmentalandsocialimpactofrareearthelementsproductionandcons