Separation of Platinum from Platinum-scrap Leaching Model Solution(Pt, Rh, Al, Fe) Using Synthetic Extraction Resins

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Vol. 49, No. 1 O2012PG pp. 1-9

෍ন౟ౢ৤஺ࠜଲ૳෉ࢽׁਆ೥޾ಅౢࡦॷઁ 1U 3I "M 'F ଞߦऀഉࢽׁंࠤ

෉ܛ෭

Â จ଴ন

Â ହֈଵ

Â ෉ౡ

Â ଲ஼ઽ

Â ׌ஜ৤

Â ࢮ෴ָ

Separation of Platinum from Platinum-scrap Leaching Model Solution (Pt, Rh, Al, Fe) Using Synthetic Extraction Resins

Dong-Hyuk Han, In-Sung Hwang, Gwang-Il Lim, Choon Han , Jin-Young Lee, Joon-Soo Kim and Hyung-Kyu Park

Abstract : For the separation of Pt from platinum-scrap leaching model solutions(Pt, Rh, Al, Fe), extraction resins were synthesized and separation efficiencies were evaluated. During synthesis, the suspension polymerization method was adopted with D2EHPA and tri-butyl-phosphate(TBP) as extractants. Also, benzoyl peroxide as a starter was divided into 3 parts and injected for the uniform size and dispersion of resin particles. In case of synthetic resin with D2EHPA, almost all Fe and Al(99~100%) were extracted. Furthermore the synthetic resin with TBP extracted Pt selectively in Pt and Rh mixtures. Consequently, a small amount of synthetic resin(3~5wt%) was found enough for extractions of Fe and Al. In case of the synthetic resin with TBP, 5~10wt% of resin was enough for selective extraction of Pt(74%).

Key words : Platinum, D2EHPA, Tri-butyl-phosphate, Synthetic resin, Suspension Polymerization method څ أ іŚ֟ࡾ͗ࠞ߻Н(іŚ, Ϳ˘, ؎Θйɔ, ߏ)ڌؚڷͿҙࢢіŚқνεڦॠي, ߸߻܃D2EHPAٮ

tri-butyl-phosphate(TBP)εۋڌॠيইࢎܼ०Ѫقşߣॢ߸߻սݓε०ՁॠČқνমڱںथÀॠٕɰ. սݓ ०Ձ֨߸߻܃ۆČδқԓęŒێॢۓۙεχ˞ر؎Θйɔęߏۆ߸߻͟ںݒÀ֨ࢅČۙъڿÒ֨܃ۍ

benzoyl peroxide(BPO)ۆߐÀѪںѺজ֨ࡈՃѥǣɀرߐÀॠٕɰ. D2EHPAεۋڌॠي०Ձॢ߸߻սݓۆ

ąڍіŚ֟ࡾ͗ࠞ߻НǴFeٮAlں99~100% ߸߻ॠəìںঝۍॠٕɰ. ̚ॢࠞ߻НǴۛΪʽPtٮRhۆ

ąڍTBPεۋڌॠي०Ձॢ߸߻սݓÀPtχԸ࢘ۺڷͿ߸߻ॠəìںঝۍॣսەؽɰ. ˃սݓϿ˃55

ūݓə߸߻মڱۋݒÀॠǣ, ŔۋԜۆ٣ʪقԴəٖॳۋػəìڷͿঝۍʼؽڷ϶, ߸߻սݓۆߐÀ͟ق

˰δ߸߻মڱڹD2EHPA սݓۆąڍ3~5%ȬʪقԴ߯ʂ߸߻মڱ99.5~99.9%εঝۍॠٕČ, TBPսݓۆ

ąڍ5~10%ȬʪقԴ74%ۆ߯ʂ߸߻মڱںঝۍॠٕɰ.

ܳڅر іŚ, D2EHPA, TBP, ०Ձսݓ, ইࢎܼ०Ѫ

2011ț9ښ23ێۿս, 2011ț12ښ9ێ֮ԐٰΒ 2012ț2ښ22ێóۦঝ܁

1) ġڏʂॡİজॡėॡę

2) ॢĶݓݗۙڙٍĵڙġНۙڙٍĵ҆ҙ

*Corresponding Author(ॢߺ) E-mail; [email protected]

Address; Department of Chemical Engineering, Kwangwoon University, Seoul, Korea

Դ΁

іŚܔŚ՚ڹۻş, জॡфНνۺՁݗۋڍսॠي

ۻࣀۺۍ҃ԵԓغۆًٖӼ؉ɦ͆ۻۙėغۆՙۦͿ

Դܼڅॢڦ࠘ε޲ݓॠČەڷ϶ŔսڅÀݒÀॠČ

ەɰ. ŔνČČ٣قԴজॡۺՁݗۋ؋܁ॠي२ėۦ ΒфԵڮজॡęۙʴ޲दߤϔقȇνԐڌʼ϶Ǵ֩

Ձۋڅĵʼəۻş·ۆΒԓغˣėغфԜغڌڷͿġ ѩڦॠóԐڌʼČەɰ(Bernadis et al., 2005; Cui and Jhang., 2008; Shams and Goodarzi., 2006). ̚ॢۋ͢

սڅśݒق˰͆ۻݓ֟ࡾ͗, दۻۙşş, Եڮজॡद ߤϔ, ۙʴ޲दߤϔˣęÏڹԓغदşНۆьԦ͟ۋ

śݒॠČەڷ϶, ۋ˞दşНقəŚ, ڹ, іŚ, ࣻ͆˘, Ϳ˘ˣČÀۆŊŚ՚Ӽχ؉ɦ͆ĵνεҼ΅ॢɰت

ॢڮÀŚ՚˞ۋ॥ڮʼرەر2޲ۙڙۋ͆ॣսە

ٍĵȦЛ

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ɰ. ۋ˺ߌνʼݓ؍ČѣͲݓəदߤϔεۋڌॠيȭ ڹধսڱͿіŚܔŚ՚ںধսॣ˺, ՙۦۆČҙÀÀ ݓজ֬ইęߐɳԓغқآۆşցÒьق४֮şցͿԴ

টڌʾսەڷ϶, ߤϔӼ؉ɦ͆ČտʪৠڮŚ՚фі ŚܔՙۦͿটڌۋÀɠॠɰ(Kim et al., 2003; Lee et al., 2004).

şܕڌϔ߸߻قۆॢіŚۆқνقəψڹٍĵÀ

ۋΘرܐڷ϶, Ԑڌʽ߸߻܃ق˰͆ۋ٣İঞęۋ٣ ڌϔজقۆॢ߸߻܃ͿқΪʽɰ. ۋ٣İঞقۆॢ߸

߻܃ε amineΪ, ۋ٣ڌϔজق ۆॢ ߸߻܃ə etherΪ, ketoneΪٮphosphateΪۆ߸߻܃Àەɰ. ߸߻܃TBP قۆॢіŚۆڌϔ߸߻ۆĀęəڍսॠóǣࢍǮɰ (Lokhande et al., 1998; David, J, 2009; Christian et al., 2006; Schreier and Edtmaiser, 2003; Nowottny et al., 1997). Ŕ͠ǣڌϔ߸߻Ѫقۆॢқνəڌϔۙߕقۆ

ॢқνؚۆȬʪѺজٮڌϔۆ܁܃قۆॢҝठ॥ۋ

˰βČ, ۋ٣İঞѪقԴəৠчڌؚںԐڌॠş˺Лق

Ԝغۺ őϿۆ қν·܁܃ė܁ق ۋڌॠəʚ ψڹ şց ۺ, ą܃ۺ܃أۋەɰ(Kim and Lee, 1995; Lee et al., 2010). ॢठşܕۆ߸߻܃εۋڌॠي߸߻սݓε० Ձ঳қνė܁قԐڌ֨߸߻܃ۆǰڹ՜֬ęۋʴই ԜՁݗق˰δӇδқν, ČտʪԓНۆԦԓˣۆψ ڹۤ۾ںݓɦČەڷ϶, ČؚۆԜق˰δқνͿۍॢ

іŚχۆ߸߻قڌۋ॥ۋەɰ(Matsunaga et al., 2001;

Kim et al., 2006; Andreas et al., 1999).

˰͆Դٍ҆ĵقԴəڮÀŚ՚ধսۆێঞڷͿіŚ

֟ࡾ͗ࠞ߻НϿԐڌؚ(Pt, Rh, Fe, Al) ǴPtεқνॠ şڦ३1޲ۺڷͿFeٮAl ߸߻قڍսॢՁɠںÍə

߸߻܃D2EHPAεۋڌॠي߸߻սݓε०ՁॠČۙॠ

ٕɰ. ̚ॢۛΪʽRhęPtܼPtεқνॠşڦ३߸߻

܃TBPεۋڌॠي०Ձॢ߸߻սݓεۋڌॠيқν

֬ॹں ֬֨ॠٕɰ. ٚҼ֬ॹقԴ TBPə іŚܔ Ś՚

RhęPt ܼPtεԸ࢘ۺڷͿқν॥قەرڍսॢՁɠ ںٕ҃ڷǣࠞ߻НϿԐڌؚق1޲ۺڷͿԐڌ֨PtӼ

؉ɦ͆ϿԐڌؚǴFeٮAlε2040% ߸߻ॠəìں

ঝۍॣսەؽɰ. ˰͆Դ߸Àқνė܁ۋज़څॠóʼ ČşܕۆϿԐڌؚǴPtۆ՜֬ۋьԦॠдͿ, D2EHPA ε ۋڌॠي०Ձॢ߸߻սݓͿϤ۹FeٮAlںқνॠ ČRhęPtܼPtχںTBPεۋڌॠي०Ձॢ߸߻սݓ εۋڌॠي қνॠČۙ ॠٕɰ.

̚ॢTBP ߸߻սݓقۆ३߸߻ʽPtε࢐޳ॠşڦ

ॢԓՁʪমęʪČ޶ॠČۙॠٕڷ϶, սݓ०Ձ֨ই

ࢎܼ०ѪںԐڌॠČۋ˺٣ʪٮ߸߻սݓۆߐÀ͟ۋ

߸߻মڱق й࠘ə মęε Č޶ॠČۙ ॠٕɰ.

֬ॹ

֬ॹۦΒ

߸߻ սݓۆ ०Ձں ڦ३ ɳ͟ߕ styrene monomer (KANTO CHEMICAL CO., INC., 99%)ٮdivinyl benzene (TOKYO CHEMICAL CO,. LTD., 50%), ͆˥ࠥں঍Ձ ॠəܼ०ъڿÒ֨܃(BPO, ACROS ORGANICS, 99%) ε Ԑڌॠٕɰ. ؋܁܃Ϳə polyvinyl alcohol 500(DC Chemical INC)ںԐڌॠٕČşė঍Ձ܃Ϳtoluene(Duksan pure chemical CO., LTD., 99%)ę n-heptane(Duksan pure chemical CO., LTD., 99.5%)ںԐڌॠٕɰ. ߸߻

܃ədi-2-ethylhexylphosphoric acid - D2EHPA(Luoyang Zhongda Chemical Co., Ltd., 95%)ٮtri-butyl-phosphate - TBP(Kanto chemical CO., INC., 95%)εԐڌॠٕɰ.

०Ձʽ߸߻սݓə25قԴ24֨Âʴ؋æܓ֨ࢇˏ

қթॠي 75 ȝm100 ȝmͿ filteringॠي ҃ěॠٕɰ.

қν֬ॹںڦॢіŚ֟ࡾ͗ࠞ߻НϿԐڌؚ܃ܓε

ڦ३іŚܔڙՙͿH2PtCl6-5.7H2O(Kojima chemical., 99.2%)ٮRhCl3-3H2O(Kojima chemical., 99%) ؎Θй ɔęߏŚ՚ڙՙͿəAlCl3 (FLUKA, 98%)ęFeCl3

(SIGMA, 100%)εԐڌॠٕɰ. ڌؚǴڙՙۆȬʪε

қԵॠş ڦ३ inductively coupled plasma - optical emission spectrometer(DV2000, PerkinElmer Inc.)εۋ ڌॠٕČscanning electron microscope(S-4700, Hitachi Inc.)ںࣀ३߸߻սݓۆۓۙ঍ࢗٮқपεࠑ܁ॠٕ

ɰ. ̚ॢ०Ձ߸߻սݓۆқۙĵܓεࣷ؊ॠşڦॠي

fourier transform infrared spectroscopy(TravelIR II, Smiths Inc.)ε ۋڌॠٕɰ.

߸߻սݓۆ०Ձ

߸߻սݓə०Ձقইࢎܼ०Ѫںۋڌॠٕəʚۋə

ইࢎܼ०Ѫںۋڌ֨Čտʪۆȭڹܼ०ߕεصںս

ەČܓۚѓѪۋठνॠş˺ЛقėغۺڷͿʪψۋۋ ڌʼČەş˺Лۋɰ. ŔνČČқۙݓݓߕε०Ձॠ əʚڮνॠ϶࣢০ڮνԜۆpolystyrene, poly(methacrylate), poly(vinyl chloride) фpolyacrylonitrile ˣۆvinyl ܼ ०ߕۆ܃ܓقڮνॠɰ(Fatemeh Jahanzad et al., 2005).

˰͆Դ߸߻սݓε०Ձॠşڦ३ইࢎܼ०Ѫںۋڌ

ॢ०ՁѪںÒьॠيۋεࣀ३߸߻սݓε०Ձॠٕڷ

϶Ŕق˰δ०Ձę܁ںFig. 1قǣࢍǴؽɰ. 2000 ml ধқ֩ъڿşقݒΪս560 gęɳ͟ߕۍstyrene monomer 110 g, Àİ܃divinyl benzene 110 g, ߸߻܃(D2EHPA) 75 gںȏČ80ūݓÀَॠ϶lab-stirrerںۋڌॠي

300400 rpmڷͿঔ०İъॠٕɰ. ٣ʪÀ80Ϳ؋

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Heating and mixing at 80

H2O+styrene+divinyl benzene+Extractant

(D2EHPA, TBP)

Mixing n-heptane+toluene+PVA

Injection benzoyl peroxide

Stirring for 12hr

Filtering and drying

Grinding to 150 ~ 200mesh

Fig. 1. Synthesis procedure for extraction resins by the suspension polymerization method.

܁জʼؽں˺ऋڰ܃фşė঍Ձ܃Ϳtoluene 150 g ęn-heptane 50 gεߐÀॠٕɰ. ۋəऋڰ܃ٮşė঍

Ձ܃ۆ ߐÀͿ ۍॠي ߸߻ սݓ०Ձ ঳ ÒѻۺڷͿ

swelling ę܁ںԦ͜ॣսەɰ(Sulki Park et al., 2011;

Lim et al., 2011; Park et al., 2005; Park et al., 2004).

ŔνČ؋܁܃PVA 5.6 gںߐÀॢ঳ъڿÒ֨܃BPO 1.6 gںߐÀॠٕɰ. ܼ०ъڿÒ֨܃εߐÀॣ˺, ъڿ Ò֨܃ۆتں1֨ÂÂüڷͿ3ѥǣɀرߐÀॢ঳ق

12֨Â ʴ؋ ٣ʪٮ İъ՚ʪε ڮݓॠي ०Ձॠٕɰ.

०Ձʽ߸߻սݓəÀؓज़ࢢτ঳ق25قԴ24֨Â ʴ؋ٰۻæܓ֨ࡈ75100 ȝm sieveͿԸѻॠيн ҋ҃ě ॠٕɰ(Choon Han et al., 2008).

қν֬ॹ

H2PtCl6·5.7H2O, AlCl3, FeCl3εݒΪսقڌ३֨ࡈÁ ÁۆȬʪ1000 mg/lۆϿؚęRhCl3·3H2OεݒΪսق

ڌ३֨ࡈȬʪ110 mg/lۆϿؚں܃ܓॠٕɰ. қν֬ॹ ڹÁÁۆϿؚںৠԵ֨ࡈ܃ܓॢ150 mlۆϿԐڌؚ

(Pt, Al, FeۆȬʪεÁÁ100 mg/lęRhۆȬʪ11 mg/l) ڌؚںۋڌॠٕČ, D2EHPAٮTBPεۋڌॠي

०Ձॢ߸߻սݓəÁÁ5 wt%(150 ml ڌؚʂҼ7.5 gۆսݓ)εߐÀॠٕɰ. 250 ml Ҽۋ࠶ق150 mlۆڌ

ؚęսݓεߐÀॠي֨ॱॠٕڷ϶100 rpmۆ՚ʪͿ

İъॠČ֨Β޽ࠄ֨قəॢݓ۾قԴ15 mlۆ֨Βε

޽ࠄॠٕɰ. ֬ॹ١޲εܶۋČ, Č/ؚҼۆѺজε߯ՙ জॠşڦॠي150 ml ঔ०ڌؚں3Òχ˞ر߸߻֬ॹ ں֬֨ॠٕڷ϶, ъ҄֬ॹĀę١޲ѩڦə0.51%Ϳ

ǣࢍǮɰ. ֬ॹ֨25, 35, 45, 55ۆ٣ʪѻͿ֬ॹں

֬֨ॠٕڷ϶ ߪ 90қÂ қν֬ॹں ֬֨ॠٕɰ.

֨Βəқν֬ॹۻۆڌؚęқν֬ॹ֨ۚ঳ۆ10 қūݓ2қÂüڷͿ, 30қūݓ5қÂüڷͿ, 90қūݓ ə10қÂüڷͿ޽ࠄॠٕɰ. қνڌؚǴPt, Rh, Al, Fe ȬʪқԵںڦॠيICP-OESεԐڌॠٕČ, ߸߻ս ݓۆۓۙқपф঍ࢗε؎؉҃şڦ३ܳԐۻۙইйą ں ۋڌॠٕɰ. ॢठ Ͽ˜ ֬ॹڹ ʴێܓæقԴ 3ধ؂

֬֨ॠٕڷ϶ICP-OESقۆॢқԵठ޲əPt, Rh, Al, Feۆąڍ±0.5%Ϳϔڍǰؕɰ. ̚ॢ˃ܛΪۆ߸߻܃

εԐڌॠي०Ձॢ߸߻սݓۆқۙĵܓεҼİॠş

ڦॠي ۺٽԸ қġş(FT-IR)ε ۋڌॠٕɰ.

Āęфࢹ΁

߸߻܃ق˰δқν࣢ՁथÀ

߸߻܃D2EHPAٮTBPεۋڌॠي०Ձॢ߸߻սݓ ۆۓۙ঍ࢗфۓʪəࡾóɰβݓ؍əìںঝۍॣ

սەؽɰ. ˃߸߻սݓϿ˃Ïڹ०ՁѪقۆॠي०Ձ ॠٕڷ϶०ՁНݗۆܓՁ̚ॢʴێॠó॥ڷͿ׆ۓʪ

ф঍ࢗʪڮԐॠó०ՁʽìڷͿࣺɳʽɰ. ߸߻սݓ

०Ձ֨ۓʪфۓۙ঍ࢗقࡾóٖॳںǛ࠘əBPOۆ

ߐÀѪڹ˃߸߻սݓϿ˃BPO 3potڷͿ०Ձॠٕɰ (Fig. 2). ˃ ߸߻܃εۋڌॠي ߸߻սݓε ०Ձॣ ֨

ʴێॢ BPO ߐÀѪڷͿ ۓۙε 2040 ȝmͿ ܓۼॣ

սەəìںঝۍॠٕɰ. ̚ॢÁ߸߻܃Ϳ०Ձॢ߸߻

սݓۆ ߸߻Ձɠڹ ъڿÒ֨܃ BPOۆ ߐÀѪق ۆॢ

ٖॳڷͿࣺɳʼəʚێ܁͟ۆъڿÒ֨܃εॢѥقϿ

˃ߐÀ֨ъڿۋȃИӇβóݕॱʼČ3ѥۋԜǣɀ رߐÀ֨قəъڿۋȃИߎߎ০ێرǣۓۙÀڿݚ ʼر ०Ձʼə ìںঝۍॠٕɰ.

D2EHPAεԐڌॠي०Ձॢ߸߻սݓۆąڍۓۙۆ

ࡾşÀ2030 ȝmͿŒێॠó०Ձʽìںঝۍॣս

ەؽڷ϶(Fig. 2-(a)), TBPεԐڌॠي०Ձॢ߸߻սݓ ۆąڍ2040 ȝmۆۓʪεÍəìںঝۍॣսەؽ ɰ(Fig. 2-(b)). BPOۆߐÀѪق˰͆Œێॢۓʪٮĵ

঍ۆۓۙͿԦՁʼؽڷ϶߸߻মڱʪڍսॢìںঝۍ ॠٕɰ. ˃߸߻սݓۆқۙۆĵܓ܁҃əۺٽԸқġ şεۋڌॠيࠑ܁ॠٕڷ϶ŔĀęəFig. 3قǣࢍǴ ؽɰ. ˃߸߻սݓۆۺٽԸқġ֟घ࣡ͤڹ࣢܁क़ࡾ

Àێ࠘ॠəìںঝۍॣսەؽČ2900 cm^-1قԴÀİ

भνࣲ֟ͬۆ࣢ݜۺۍक़ࡾ˞ںϿ˃ঝۍॣսەؽڷ

϶, 1000 cm^-1قԴ߸߻܃ق˰δČڮۆक़ࡾεঝۍॠ

ٕɰ.

қν֬ॹڹ250 ml Ҽۋ࠶قԴbatch ѓ֩ڷͿۋΘ رܐڷ϶, İъ՚ʪə100 rpm, ֬ॹ٣ʪə25, pHə

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(a)

(b)

Fig. 2. SEM images of synthetic resins with D2EHPA and TBP ((a) resin with D2EHPA, (b) resin with TBP).

Fig. 3. FT-IR spectrums of the synthetic resins ((a) extraction resin by using D2EHPA, (b) extraction resin by using TBP).

(a)

(b)

Fig. 4. Extraction results of synthetic resins with D2EHPA and TBP (Feed : Pt 100mg/l, Rh 11 mg/l, Fe 100 mg/l, Al 100mg/l, Resin : D2EHPA synthetic resin 7.5 g, TBP synthetic resin 7.5 g, Temp: 25, Time : 90 min, Stirring rate : 100 rpm, pH: 2.22.8).

2.22.8ۋٕڷ϶, іŚ֟ࡾ͗ࠞ߻НϿԐڌؚǴڙ ՙۆ ܓՁڹ Pt(100 mg/l), Rh(11 mg/l), Fe(100 mg/l), Al(100 mg/l)Ϳۺ܁ॠي֬֨ॠٕɰ. D2EHPAۆіŚ

֟ࡾ͗ࠞ߻НϿԐڌؚǴFeٮAlۆ߸߻ՁɠںFig.

4-(a)ق ǣࢍǴؽɰ. ߸߻ ֬ॹĀę ϿԐڌؚ Ǵ Feə

D2EHPA ߸߻սݓق ۆ३ 100% ߸߻ʼؽڷ϶, Alۆ

ąڍ 99.2%À ߸߻ʽ ìں ঝۍॣ ս ەؽɰ. ۛΪʽ

RhęPtۆқνεڦॢTBP ߸߻սݓεۋڌॠيқν

֬ॹں֬֨ॢĀęPtχ72%߸߻ʼəìںঝۍॣս

ەؽɰ(Fig. 4-(b)).

٣ʪٮ߸߻սݓߐÀ͟ق˰δ߸߻Ձɠ

D2EHPAٮTBPεۋڌॠي०Ձॢ˃߸߻սݓϿ

˃٣ʪÀ٤͆Äս΀ՁɠۋॳԜʿںٕ҃ڷǣ55

قԴқνՁɠۋʌۋԜԜ֧ॠݓ؍əìںঝۍॣս

ەؽɰ. ۋə٣ʪÀ٤͆Äս΀ڙۙ˞ۆটՁۋݒÀ

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(a) 25 (b) 35

(c) 45 (d) 55

Fig. 5. Temperature effects on extractions of the synthetic resin as D2EHPA (Feed : Pt 100mg/l, Rh 11 mg/l, Fe 100 mg/l, Al 100 mg/l, Resin : D2EHPA synthesis resin 7.5 g, Time : 90 min, Stirring rate : 100 rpm, pH: 2.4~2.8).

ॠيқνՁɠۋݒÀॠݓχ55ۋԜۆČ٣قԴ٣ʪ À߸߻սݓۆটՁʪٮϿԐڌؚǴۆіŚܔڙՙۋ ٣ęŚ՚ڙՙۋ٣ۆটՁقࢀٖॳںǛ࠘ݓЇॠي

қνՁɠۋ ݒÀॠݓ ؍ə ìڷͿ ԐΒʽɰ(Richard I.M., 1996; Richard I.M., 2001). D2EHPAεۋڌॠي

०Ձॢ߸߻սݓəϿ˜٣ʪѻ֬ॹۆًٖقԴFeə

100% ߸߻ʼؽڷ϶, Alۆąڍ35قԴ99.5%ε45

قԴ99.7%ۆқνՁɠں҃ۋ϶, 55قԴ߯ʂ99.9%

ۆқνՁɠںঝۍॠٕɰ(Fig. 5).

TBPεۋڌॠي०Ձॢ߸߻սݓۆąڍۛΪʽRh ٮ Ptܼ Ptε Ը࢘ۺڷͿ ড়޳ॠə ìں ঝۍॠٕəʚ

25قԴ72%ε35قԴ72.8%ۆқνՁɠں҃ۋ϶, 45قԴ73.5%ۆқνՁɠںٕ҃ڷ϶55قԴ߯ʂ

74%ۆқνՁɠںঝۍॣսەؽɰ(Fig. 6). ˃߸߻ս ݓϿ˃55قԴ߸߻ڱۋ߯ʂÉںÀݓ϶ŔۋԜۆ

٣ʪقԴə߸߻ڱۋԜ֧ॠݓ؍Čϧ߸äǣ̆رݓə

ìںঝۍॠٕɰ. ۋìڹ٣ʪÀԜ֧ॠóʼϸ࢐޳ʼ ؽʏŚ՚ۋ٣ۋǣіŚڙՙۋ٣ۆটՁʪÀࡾóݒ Àॠيড়޳ʼؽʏFe, Al фPtۋ٣ۋ࢐޳ʼşʪ॥

ق ˰͆ ߸߻ڱۋ ̆رݓə ìڷͿ ࣺɳʽɰ(Richard I.M., 1996; Richard I.M., 2001).

̚ॢ߸߻սݓۆߐÀ͟ق˰δ߸߻মڱں؎؉҃ş

ڦॠي˃߸߻܃Ϳ०Ձॢ߸߻սݓÁÁقʂॠي߸

߻սݓ ߐÀ͟ں Ѻজ֨ࡈ қνՁɠں Č޶ॠٕɰ. Ŕ

ĀęD2EHPAεۋڌॢ߸߻սݓۆąڍ35 wt% ߐ À֨߯ʂ߸߻মڱ99.599.9%εঝۍॠٕČ, TBP εۋڌॢ߸߻սݓۆąڍ510 wt%قԴ74%ۆ߯

ʂ߸߻মڱں ঝۍॠٕɰ(Fig. 7).

TBPսݓقড়޳ʽPt ࢐޳ܓæ

іŚ֟ࡾ͗ࠞ߻НϿԐڌؚقԴPtχں߸߻ॢTBP

߸߻սݓͿҙࢢPtχں࢐޳३Ǵşڦ३ܼՁфأԓՁ

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(a) 25 (b) 35

(c) 45 (d) 55

Fig. 6. Temperature effects on extractions of the synthetic resin as TBP (Feed : Pt 100 mg/l, Rh 11 mg/l, Resin : TBP synthesis resin 7.5 g, Time : 90 min, Stirring rate : 100 rpm, pH: 2.2~2.6).

0 20 40 60 80 100

Extraction amount (mg/l)

0.5wt% 1wt% 3wt% 5wt% 10wt% 15wt%

Resin dose

Fe

0 20 40 60 80 100

0.5wt% 1wt% 3wt% 5wt% 10wt% 15wt%

Resin dose

Al

0 10 20 30 40 50 60 70 80 90 100

0.5wt% 1wt% 3wt% 5wt% 10wt%15wt%

Resin dose

Pt

(a) (b) (c)

Fig. 7. Amounts of resins for extractions of Fe, Al and Pt. (Feed : Pt 100 mg/l, Rh 11 mg/l, Fe 100 mg/l, Al 100 mg/l, Temp: 55, Time : 90 min, Stirring rate : 100 rpm, pH: 2.5(a,b), 2.3(c)).

ڌؚقԴ࢐޳֬ॹں֬֨ॠٕɰ. Pt Ś՚ۙߕۆąڍ

ݒΪսقڌ३ʼݓ؍ڷǣٍ҆ĵقԴəH2PtCl6·5.7H2O ε Ԑڌ॥ڷͿԴݒΪսǴPtCl62-

ۆ ۋ٣ԜࢗͿڌϔজ

֨ࡈ֬ॹقۋڌॠٕɰ. ࢐޳֬ॹڹTBP ߸߻սݓ10 g (߸߻սݓߐÀ͎10 wt%)ں߿ݕ֨ࢇcolumnںۋڌ ॠي֬֨ॠٕɰ. ࢐޳ڌؚڷͿH2O, 0.1M HCl, 0.5M

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)0 B

.)$* C

.)$* D

Fig. 8. Desorption of sorbents for extraction of Pt. (Feed : Adsorbed Pt on TBP resin 74 mg, Temp: 55, Time : 90 min, Stirring rate : 100 rpm, pH: 7.0(a) 4.1(b), 3.0(c)).

HClںԐڌॠٕɰ. ࢐޳֬ॹĀęH2O(pH 7)ں࢐޳ؚ

ڷͿԐڌॢĀęTBP ߸߻սݓقড়޳ʽPtε99.79%

ε࢐޳ॠəìںঝۍॠٕɰ. 0.1M HClں࢐޳ؚڷͿ

ԐڌॢĀę97.77%ۆড়޳ʽPtε࢐޳ॠٕڷ϶, 0.5M HClں࢐޳ؚڷͿԐڌॢĀę93.15%ۆড়޳ʽPtε

࢐޳ॠəìںঝۍॠٕɰ(Fig. 8). ۋ˺߸߻܃TBPق

ۋܼĀ० ʼر ەʏ Oۆ Ā०ق PtCl6

2-À ড়޳ʼäǣ

̆ر܋ǣ٩ڷͿԴড়·࢐޳ۋۋΘرݓəìڷͿࣺɳʽ ɰ. ߸߻܃TBP Ԑڌ֨ԓՁڌؚقԴড়޳ۋ۞ۋΘر ݓǣ࢐޳ۆąڍأԓՁфܼՁڌؚقԴۋΘرݓə

ìں֬ॹںࣀ३ঝۍॠٕڷ϶ড়·࢐޳ę܁ں֩(1)ق

ъڿ֩ںۋڌॠي ǣࢍǴؽɰ.

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ܼՁфأԓՁڌؚقԴ࢐޳ۋ۞ۋΘرݓəìڹ

߸߻܃ TBPۆ ąڍ ড়޳ۋ ԓՁڌؚقԴ ۋΘرݓǣ

pHÀȭ؉ݗս΀ড়޳ڱۋ̆رݓČ࢐޳ڱۋԜ֧ʼş

˺ЛڷͿࣺɳʽɰ(Richard, 2001).

Ā΁

іŚ֟ࡾ͗ࠞ߻НϿԐڌؚ(Pt, Rh, Fe, Al)ڷͿҙࢢ

Ptε қνॠş ڦॠي ˃ ܛΪۆ ߸߻܃(D2EHPAٮ

TBP)εԐڌॠي߸߻սݓε०Ձॠٕɰ. D2EHPA ߸

߻սݓεۋڌॠيϤ۹ϿԐڌؚǴFeٮAlں߸߻ॠ ČTBP ߸߻սݓεۋڌॠيPtχںԸ࢘ۺڷͿ߸߻ॢ

঳Ptε࢐޳ॠəқν֬ॹںࣀॠيɰڼۆĀęεص

ں ս ەؽɰ.

˃߸߻܃εԐڌॢ߸߻սݓϿ˃ъڿÒ֨܃(BPO) ۆߐÀѪڹ3potێ˺ڍսॢ߸߻ĀęεǣࢍǴؽɰ.

ۋəSEMںࣀॢۓۙशϸф঍ࢗқԵقۆ३ঝۍॢ

Āęܼ०ъڿÒ֨܃εॢѥقϿ˃ߐÀ֨ъڿۋȃ ИӇβóݕॱʼر०Ձۋ۞ۋΘرݓݓ؍äǣйՃ

ॢࡾşۆۓۙÀ०ՁʼČ3ѥۋԜǣɀرȏڹìڹ

ъڿۋȃИߎߎ০ݕॱʼرۓۙ˞ۋڿݚʼر०Ձۋ

۞ۋΘرݓݓ؍ş˺ЛڷͿࣺɳʽɰ. ̚ॢۓۙ঍ࢗ

ǣۓʪə߸߻܃ق˰δѺজÀ؉ɦČъڿÒ֨܃ۆ

ߐÀѪق ۆॢ ìےں ঝۍ ॣ ս ەؽɰ.

D2EHPA߸߻սݓεԐڌॠيFeٮAl ߸߻֬ॹĀ ęFeə100%, Alڹ99.2%ۆڍսॢ߸߻Ձɠںٕ҃

ɰ. ̚ॢTBP ߸߻սݓεԐڌॠيϿԐڌؚǴۛΪʽ

RhęPt ܼPtχںқνॢĀę72%ۆড়޳ڱںঝۍॠ

ٕڷ϶, TBP ߸߻սݓقড়޳ʽPtəأԓՁфܼՁڌ

ؚں࢐޳ؚڷͿԐڌॢĀę߯ʂ99.79%ۆڍսॢ࢐

޳ڱںঝۍॣսەؽɰ. ؉ڐ͠FT-IR қԵںࣀॠي,

ٍ҆ĵقԴ˃߸߻սݓۆąڍ߸߻܃ق˰δpeakę

polystyreneق ˰δ peakÀ ঝۍʼؽɰ.

̚ॢ٣ʪÀ߸߻মڱقй࠘əٖॳںԕट҃şڦॢ

қν֬ॹĀę55قԴ߸߻ڱۋ߯ʂεÍəìںঝ ۍॣսەؽڷ϶ۋ͠ॢইԜڹ55ۋԜقԴŚ՚ۋ ٣фіŚۋ٣ۆটՁʪÀࡾóݒÀ॥ق˰͆ড়޳ʼ ؽʏ Fe, Al, PtÀ ࢐޳ʼş ˺ЛڷͿ ࣺɳʽɰ.

ٍ҆ĵĀęق˰͆߸߻܃D2EHPAٮTBPεۋڌ ॠي߸߻սݓε०ՁॠČۋεɳćۺڷͿԐڌ֨і Ś֟ࡾ͗ࠞ߻НͿҙࢢіŚধսÀϔڍমڱۺڷͿۋ Θرݗ ìڷͿ ࣺɳʽɰ.

ÇԐۆŘ

ٍ҆ĵəॢĶݓݗۙڙٍĵڙՙۦڙߎşցÒьԐغ قۆ३ սॱʼؽڷ϶, ۋق ÇԐ˚ςɦɰ.

޷ČЛॶ

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Shams, K. and Goodarzi, F., 2006, “Improved and selective

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