314 8*%9 JournalofXi anuniversityoftechnology(2019)vol.35no.3 DOI: /j.cnki.issn ,-./01 / ,,, ( 8*%9 :; 8 71

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1 314 8*%9 JournalofXi anuniversityoftechnology(2019)vol.35no.3 DOI: /j.cnki.issn ,-./01 / ,,, ( 8*%9 :; %<=>?@A, ) :!"#$%&!' (Ultrasound/SpongeIron/Potassium Persul fate,us/si/ps) ()*+,-,./ ' 0#$%1, ()*(Sulfadiazine, SD) ph :, ()* 15mg/L,; 2 25, 56 W, ph=9.0±0.1,' 0#$%1 0.4g/L 00.6g/L, ()* 30min+ <=93.3% US/SI/PS ()*+'>?@ABCDE US/SI/ PS ()* FGH( )0IHFGH(HO )+J@KL #$%+M NO8-9:, L, ()*30min+ PQRS93 %TU,XRD VW:#$% 9XY + Fe 2+! B > UQR #$%+&! :;#$%;' ; ()*!"#$:X703 %&' :A % $: (2019) 犛狌犾犳犪犱犻犪狕犻狀犲犱犲犵狉犪犱犪狋犻狅狀犻狀狌犾狋狉犪狊狅狀犻犮犲狀犺犪狀犮犲犱狊狆狅狀犵犲犻狉狅狀 / 狆狅狋犪狊犻狌犿狆犲狉狊狌犾犳犪狋犲狊狔狊狋犲犿 LIWenying, WEIHong,ZHANGJiatong,YANG Xiaoyu (StateKeyLaboratoryofEco HydraulicsinNorthwestAridRegionofChina,Xi anuniversityoftechnology, Xi an710048,china) 犃犫狊狋狉犪犮狋 :Thedegradationofsulfadiazine(SD)intheultrasound/spongeiron/potassiumpersul fate(us/si/ps)system wasstudied.theinfluencingfactorssuchasaddingamountofpotassium persulfateandspongeiron,sulfadiazineconcentration,initialphvalueandtemperaturewerein vestigated.resultsshowedthatthesulfadiazinedegradationrateachieved93.3 %in30minun dertheexperimentalconditionsof15mg/lsulfadiazine,25,ultrasonicpower56 W,initialpH valueof9.0±0.1,potassiumpersulfateandspongeironaddingamountof0.4g/land0.6g/l, respectively.sulfadiazinedegradationintheus/si/pssystemfolowedpseudo firstorderkinet ics,withtheoxidationofsulfateandhydroxylradicalscontributedtosddegradation.therepli cationexperimentindicatedthatsulfadiazinedegradationratein30minstilremained93 % even ifspongeiron wasusedthreetimes.xrdanalysisshowedthattheferrousoxideproducedon spongeironsurfacemaintainedthecatalyticactivityofspongeirontoacertainextent. 犓犲狔狑狅狉犱狊 :ultrasound;spongeiron;potassiumpersulfate;sulfadiazine 45BC D(Sulfonamides)E 4 5 FG B H I J K L,M N O ; C H 45BHI N PQ RS C TUVW>, XY 9 N Z[ \] ^_`a bc V ( I G,45BC D X [1 4] J P(ng/L~μg/L), E N U V >, = OB J8 [2,4], 45BC D J = J ]? [1] R / + )* 23 I W N (HO ) / 4 : : ( ); (2017JM5082); (2013slkj 07) :!"#,$,%&',, ()* + E mail: @qq.com

2 !"#,V:,-./01 / [5] 5BC D J O 3 Fenton / [6] [7] UV/H 2O 2 γ /H 2O 2 V HO, Y(30~40μs), J ph, N / J + U,-] MV / [8] \, D J (U [9 11] E Fe 2+ / ph IJ23 Y,? JU " 9 % J, PQ, NJ01 (SI) ( /, (PS)( /,, -,0 1 / 4567(SD)J23S, (45 BC DJ)* G 1 ()* 1.1 +, 01 (! b " #, $ 9 N 95 %); ( % &,' 9 / );4567( () ( 0) "#,& 9N99 %), * :C 10H 10N 4O 2S, F +,1 -.(/T&,01 ( 0) "#); ( %&,U 2 34 "#);56 (' 78/ "#,& 9N99%);9 / : ( %&,' ';/ "#) 5minW, 0.22μm!, Aglient1200 %4567J,23 (: 23 =( 犆 0- 犆 )/ 犆 % (1) : 犆 0 ] 犆 ( 0 ] 狋 J (mg/l) J HPLC % /TG( EclipsePlusC 18 (4.6mm 150mm, 5μm); (-.:,&=25 75(V V);c 10.0μL; 0.30mL/min; K Y269nm;G 30,, J 狋 R = 8.408min J 3 TUVWG ( 5 min W ), 0.22μm! _ / K J, J 3 (: 3 =( 犆 PS- 犆 )/ 犆 PS 100% (2) : 犆 PS] 犆 ( ] 狋 J (mg/l) *J % */T % > AS19 G(4mm 250 mm, ),AG19 G(4 mm 50mm, );S L,50 ma;,ecg Ⅲ KOH;,1.0 ml/min;c,25 μl;g,30 ;, * J 狋 R=13.867min 2 /0(1,1 4567J F Fig.1 Chemicalstructureofsulfadiazine 1.2 +,-. SCIENTZ ⅡD, - (< = I "#),> 8.0 A,DC 1006 BCDEC Aglient1200 /T,> G1311A F,G 30,G1314C XL H Y IJ KL MNO 8ICS 1100 */T,> :;,- 56W 25 ph=9.0 ±0.1 PS]01 c (0.4g/L ]0.6 g/l, mg/l, 4567J23 <+,2 P Q (RFC 30),ERSdionex AERS500 4mm R *S L 1.3 +,)* J,-23 TUVW G X N 200 ml Y, Q 250 mlz [, 1.0mol/LNaOH \ H 2SO 4 ]B ph ^, G 01 ],_,- ` T9abc )*,@ (1.5cm,2 4567J23 Fig.2 Sulfadiazinedegradation underdiferentreactionsystem

3 316 8*%9 (2019) 35 3,2,,-(US) US/SI SD J S, 4567J,- J ( (3)),B [12] US/PS SD J23 (7.08%,, -C / \ SO [13] 4-,,- V DJ SI/PS S R SD J23, % 01 3\ J Fe 2+ / PS\ ( (4)),-cG. SI/PS J / S,SD J % E (, -. / \ Fe 2+, / \ 9 [14] ( (5)~ (7)) S 2O 8 +,- 2SO 4 - (3) Fe 2+ +S 2O 8 +SO 4 +Fe 3+ (4) H 2O HO +H (5) HO +S 2O 8 S 2O 8- +HO - (6) HO +S 2O 8 HSO /2O 2 (7) 4567J23 < TG ;, JTG ; Tab.1 Pseudo firstorderreactionkineticsofsulfadiazine indiferentreactionsystems 犓 /(10-3 min -1 ) 2 犚 US/ SI/PS SI /PS US/PS US/SI PS US c (0.4g/L 0.5g/L 0.6g/L 0.7g/L,SD J2 3 ( 74.85% 79.9% 93.88% ]93.76% E ( 0 1 J c, \ Fe 2+,Fe 2+ / PS \ ( (4)),SD J23 01 c 0.8g/L,23 2P % E ( Fe 2+ ] ( (8)),,SD J23 [15] Fe 2+ + Fe 3+ +SO 4 (8) 2.3 PS <8=> 2.1 B,0 1 c 0.6 g/l,ps 0.2~0.6g/L SD J23 +,4,4,PSc 0.2~0.4g/L,SD J 2 3 PS c J R PS c 0.2g/L 0.4g/L,SD J % 93.88% PSc 0.5g/L,SD J 2 3, 2P PSE J,PS c 9,,-]01 J / \,SD J2 3 PS c, \ J (9)~(10) [16],SD S 2O 8 (9) +S 2O 8 SO 4 +S 2O 8- (10) 2.2 <8=> 2.1 B,0 1 c SD 23J +,3,4 c J Fig.4 Efectofpotassiumpersulfatedosageon theremovalrateofsulfadiazine 2.4?@ 狆犎 8=>,3 01 c J Fig.3 Efectofspongeironaddingamounton sulfadiazinedegradation,3,01 c 0.4~0.7g/L,SD J23 c J R; B, 1.0 mol/l H 2SO 4 \ NaOH ]B ph ( ]11.0( ±0.1),SD J23 <+,5, 5,pH ( ] 11.0,SD J 2 3 ( 98.17% 97.01% 95.85% 93.88%]70.08%,SD J 2 3 ph

4 !"#,V:,-./01 / P, N Jc, H + HO - W, Fe(OH) 2 I J \ [17], Fe 2+ / PS;,Fe 2+ Fe 3+ 9 /I 01, / _ 1.0 mol/l NaOH > SD X, ph ( 9.0±0.1,SD J %,US/SI/PS S / SD 2 3,?@ ph 9.0 J (: 犈犪 ln 犽 =ln 犃 - 犚犜 (11),US/SI/PS 2 3 SD J / C 犈犪 =20.577kJ/mol 2.6 DE 犛犗 4 B 犘犛 8":,7~8( 30min, SO 4 ] PS 3 J,5 ph J Fig.5 EfectofinitialpHonsulfadiazinedegradation 2.5 ABC 犛犇 9:8=> 2.1B, ph=9.0±0.1, 01 c 0.6g/L,PSc 0.4g/L, SD 23 < J +, 6 ( ]45, 30min,SD J23 ( 66% 93% 88% ] 85% 15 ~25,23 J R ;, 25, 23 2P,PSEG ]J /, Fe 2+ J /, R C D J \ [18],7 * Fig.7 Sulfateionconcentrationindiferentsystems,8 J 3 Fig.8 Decompositionrateofpotassiumpersulfate,7,US/SI/PS,SO 4 ] PS 3 RN US/PS ] SI/PS US SI PS / J US/PS SO 4 R 2 P, E (, - / \ J ( (12)) * *( (10)); c, J, * 2P, J Fig.6 Efectoftemperatureonsulfadiazine degradation / G J Arrhenius" [19], HO +S 2O 8 HSO /2O 2 (12) 2.7 # F& [14,20 21], ] HO J ( ~ L mol -1 s -1 ] ~ L mol -1 s -1,

5 318 8*%9 (2019) ;56 ] HO J ( ~ L mol -1 s -1 ] ~ L mol -1 s -1, 1000 ; ] HO J ( L mol -1 s -1 ] L mol -1 s -1 ] J [22], 56 HO?@ 5 6 ] SD 2 3 <JS, +,9,10 =?@ Fig.10 Reuseexperiments :Fe 0 (0.6g/L,PS (0.4g/L, ph=9.0,25,9 S 4567 J Fig.9 Freeradicalefectofinhibitorsonthe removalrateofsulfadiazine,9, 56 ] SD 23 G < J S c 5 6,30 min,sd J %2P % 68 % 56, JS, US/SI/PS23 SD J E, N! I (SI), " PS SIJ ># $,23S 2 [23] % US/SI/PS,SD 30min &23 6.4%(,9), N ]56 (S J 68% ] 79.68%, US/SI/ PS23 SD JS '., / SD SIJ 2.8 8GHIJ,10, / = 3,SD 23 93% E (01,\ J Fe 2+ /I 01 (, G <. SD J S J 0 1 c X ) (XRD)*+, +,11, J01, J 0 1 2θ ( ) -. J/0 1), J 01 \ J Fe 2+,Fe 3+ J /I 3 /,11 01 J X, Fig.11 XraydiagramsforHouhai ferricironwithdiferenttimes 1)US/SI/PSC S /234567, < TG ;;ph,ps RIc, V D4567J23 G 2)US/SI/PS J /S N SI J / 01 Y, =,2P J KL%&: [1]234,56,7 8,V.9 8:45BC D J 1 ; [J]. /,2017,36 (12): WANGJiawei,WEIHong,YANG Xiaoyu,etal.Oc currenceandecologicalriskofsulfonamideantibioticsin thesurfacewaterofthe WeiheXi'ansection[J].Envi ronmentalchemistry,2017,36(12): [2] BARAN W, ADAMEK E,ZIEMIANSKA,etal.

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