ÐÏࡱá>þÿ ikþÿÿÿhÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿì¥Á9 øR¿*4bjbjýÏýÏ2JŸ¥Ÿ¥ÿÿÿÿÿÿl0$«.`pÐÐÐÐÐÐÐÊÌÌÌÌÌÌ$Ù ù ðuÐÐÐÐÐðÐÐÐeÐÐÐÐÐÐÊÐÐÊÐvÐFFÐT ðòö7VoÇÐFF„{0«FÐFÐÙResearches on the treatment of wastewater containing nitrobenzene by ultrasonic and activated carbon Li Zhanchen, Wang Hongxia, Gao Yuanyuan, Feng Yongqiang (College of Chemistry and Environmental Science , Hebei University , Baoding 071002,China) Wastewater containing nitrobenzene is difficult to directly degrade by microbiology method, which result that it's not allowable to discharge the wastewater into the environment according the standards. In this paper the method of ultrasonic cooperating with activated carbon pretreated on nitrobenzene. The best conditions of this way were the amount of power was 400W, the irradiation time was 3s and intermission 1.5s of ultrasonic and the total time was 35min, the mass of activated carbon was according to 0.833g activated carbon per mg nitrobenzene in the water, the initial concentration of nitrobenzene was 80mg/L and the primary pH was 7. After this process , the removal rate of nitrobenzene could be up to 97.4%, the removal rate of CODCr could be up to 98%, CODcr could cut down to 1021 mg/L, and the wastewater could go on to be treat by biochemistry method. Keywords ultrasonic; activated carbon; nitrobenzene; CODCr …�ðXâl:_S;m'`­pÕlYt]xúW^4l Ng`Sã� ÿ‹s�[— ÿØš›Z›Z ÿ\8l:_ ÿ³lS'Yf[ Sf[N¯sƒXÑyf[f[b–,³lS ÝOš[ 071002 ÿ Xd�‰ ]xúW^4l ÿ¾–åN«ˆuirM–㉠ÿôv¥cq_ÍT0R]xúW^4lYt„v¾�h’c>e.,g‡eÇ‘(u…�ðX��\:_S;m'`­pÕl„˜Yt]xúW^4l, ReQ;m'`­pTÏ~…�ðX��\Yt.Ù�Íy¹eÕl„vgsOagöN/f,(WŸR‡s:N400W,…�ðX��\öeô•3s,ô•Gköeô•:N1.5sagöN N,…�ðXöe•35min, c0.833g;m'`­pYt1g]xúWï‚ ReQ;m'`­p,Ÿ^4l-N]xúWï‚RËYSm¦^:N80mg/L,pH:N7 öe,]xúWï‚M–㉇sïS¾�97.4%,CODCr»Sd–‡sgØš¾�0R98%,CODCrM–ã‰:N1021mg/L. sQ.•Í‹ …�ðXâl ;m'`­p ]xúWï‚ CODCr     ]xúWï‚(Nitrobenzene , NB)/f”^(u^Ûl„vSå]úW@xŸS™e,;N�‰(uŽNÓg™e,;Soƒ,œQoƒÊS¸poƒI{LˆN,Ù�›NLˆN„vu§NŸ^4l-N+T g'YÏ‘]xúWï‚0ï‚ú€I{ g:galÓgir.]xúWï‚/fØšÒk'`ir(�,vQÒk'`N,‚:NvQƒ[STir„v20-30 P,NwQ g1_ô��zØS'`.•g¥cæ‰,ù[ºNSOÊS¨R iirqS³[�g'Y.ŽýV¯sÝO@\ò]\vQReQOHQ§c6R„valÓgir TUS-N[1].àVdk,+T]xúWï‚STir„vŸ^4l„vM–㉹eÕlŒT€b/gò]_w�ýV…QY„v�g›RsQèl.,gþ‹˜˜;N�‰xvzÙ�Ù�Íyir(�„vYt¹eÕl,åNg¾�0Rtó`„vYtHeœg,O]xúW^4l¾�0RýV¶[’c>ehÆQ,ÏQ{�ù[¯sƒX„vqS³[.     îvMR,ýV…Q»lt]xúW^4l;N�‰Ç‘(uirtÕl,Sf[Õl,uirÕlI{¹eÕl[2].+TØšSm¦^]xúWï‚„vå]NŸ^4l,N,‚býNƒ�:N YBg.+TÐvÏ‘ƒ�ØšNwQ gˆ_:_„vx‘±x'`,¾–åNôv¥cÇ‘(uuirÕlYt.;m'`­p8TD–ù[]xúWï‚ gˆ_}Y„vYtHeœg.…�ðXM–ã‰4lSO-N„vSf[alÓgir,$\vQ/f¾–M–㉠g:galÓgir,/fÑ�t^egÑSU\„vNy˜°e‹W4lYt€b/g.…�ðXâl”^(uŽN4lalÓg§c6R,$\vQ(WŸ^4l-N gÒk g:galÓgir„v»lt¹eb—,ò]ÖS—_†NNš[Û�U\[3-5].'YÏ‘„v‡e.s¥bS�ŒTOYž[ŒšÓ~œghˆfÿ…�ðXâl NÅNïSåN9e„UÍS”^agöN, Rë_ÍS”^�¦^ŒTÐcØšÍS”^§N‡s,Ø�ý€ON›N¾–åNÛ�Lˆ„vSf[ÍS”^—_åNž[°s.ƒ[Æ–Øš§~'lS0qçp0…�4NLu'lSI{YÍy4lYt€b/g„vyr¹pŽNN«Ž, RKNÍd\O€{US,ù[¾‹Y„v�‰Blƒ�NO,8^8^”^(uŽN¯sƒXÝO¤b†˜ßW,yr+R/f(WYtŸ^4l-NÒk'`Øš,¾–M–㉄v g:galÓgir, Rë_ g:galÓgir„vM–ã‰�¦^,ž[°så]NŸ^4lalÓgir„vàe³['`,�MQŒN!kalÓg„vq_ÍT NwQ gÍ‘�‰aIN. 1 ž[Œšè�R 1.1ž[ŒšêNhVÊSÕ‹BR (1)êNhVÿ°e�‚JY98-3D…�ðXâlÆ~Þ€‰|Žx:g0ØSE^Fg¢c4Yôv„_20mm(å]\O‘˜‡s20-25KHz,“�úQŸR‡s20-900WÞ�í~ïSŒ) (2)!jßbŸ^4lM‘6RÊSR�g¹eÕl     !jßbŸ^4lM‘6RÿÖSÆ[¦^:N1.205g/mL„vR�g¯~]xúWï‚0.083mL¶nŽN40mLàe4lYN‡‘-N,PeQ1000mL¹[Ï‘öt-N,zÊ‘ó�;R¦^.]xúWï‚Sm¦^:N100mg/L.     ]xúWï‚ÀhKm¹eÕlÿÐvx‘-1-„YNŒNú€RIQIQ¦^Õl [6]     COD„vKmš[¹eÕlÿÍ‘ì”x‘¾”Õl[7] (3)Ÿ^4l„vchÿvQTch:N]xúWï‚Sm¦^:N100mg/L, CODCr:N62000mg/L, pHf„v8TD–ý€›R.8TD–\O(u;N�‰ÑSu(WÆ~T[„vhˆb— N.‰|+g;m'`­p8TD–4l-N¶n(�RP[/fN*N YBg„vÇ� z,/fàQÍy›Rü~T\O(u„vÓ~œg,Sìb»yP[8T_›R0ƒ·_NS›R0Sf[BgŒT›R[8].9hnc8TD–„vÌS�‡sibcetº‹¤‹:N,8TD–/fN*N1uÅ��ibceŒTbaibce$N6–µktº‹¤‹:N,8TD–/fN*N1uÅ��ibceŒTbaibce$N6–µk„gb„vÌS�Ç� z,Å��ibce„vpe\öe…QsSŒ[b,ÑS%c†N60%^ÿ80%;m'`­p„v8TD–¹[Ï‘.Å��ibce/f¶n(�RP[(W³x’|…Q¿l„_TGWSR^„v;–›R\„v'YT[™–-Nibce„vÇ� z.S_RP[ÎN'YT[Û�NekÛ�eQN'YT[øv�„v®_T[-Nibceöe,1uŽN×S0Rír„zT[„_@b§Nu„vˆ_'Y;–›R,ÎN €�g:Nba.;m'`­pù[ N T„vir(�RP[wQ g �éb8TD–'`.     …�ðXâlù[Ÿ^4l-N„v g:gir„vM–ã‰egê�…�ðXzzS\O(u§Nu„v@\è�Øš)n0Øš‹SSb_Ó~T›R:_„vSf[.•ÿ¦~377-418KJ/mol ÿ.zzS\O(u§Nu„v@\è�Øš)n0Øš‹SN¹eb—ïSåNù[4l-NalÓgirôv¥c§Nuípã‰\O(u,æSN¹eb—(WØš)n0Øš‹S¯sƒX N§Nu'lS5uMOˆ_Øš„vŸúWê�1uúW,Ù�›Nê�1uúWwQ gˆ_:_„v'lS'`,Sf['`(�;mül,ïS(WzzSlálhTôVLub—T(WlálLub—:SÍ‘°eÄ~T,_NïSNlál-N%cÑS'`¶n(�ÍS”^,uó�(W¶n²m-NNïS¶n'`¶n(�ÍS”^,b_bgÈ~§Nir,ÎN €O8^ĉagöN N¾–Yt„valÓgir—_0RM–ã‰pN°s]xúWï‚M–㉄v.Šqœ[ h,^SNS~g[9]I{xvz†N…�ðXâl\O(u N„v]xúWï‚M–ã‰Ç� z,¨c­e]xúWï‚(W…�ðXâl„v\O(u NX[(W'lS-Ø�ŸSÍS”^0ípã‰0ê�1uúW\O(uI{OS T\O(u. 2.2 …�ðX��\US(uN;m'`­pÞ�(u„vÔkƒ�     ÖS120ml]xúWï‚Sm¦^:N100mg/L„vŸ^4l7h:4l7hI,ôv¥cÛ�Lˆ…�ðX��\Yt,(W‘˜‡s:N20~25kHz,ŸR‡s400W,��\öeô•2s,ô•Gköeô•:N1.5sagöN N,…�ðXöe•30min[9]ÿ4l7hII,ôv¥c ReQ3g;m'`­p,dÌb5min,Ç�änÿ4l7hIII,HQ…�ðX��\Yt,�Q R3g;m'`­p,dÌb5min,Ç�än;4l7hIV, ReQ3g;m'`­p,dÌb5min,Ç�än,gTÛ�Lˆ…�ðX��\Ytÿ4l7hV,HQ ReQ3g;m'`­p,Û�Lˆ…�ðX��\Ytÿ T4l7hI ÿ,Ç�än.Ó~œgÁ‰hˆ1. hˆ1 …�ðX��\US(uN;m'`­pÞ�(u„vÔkƒ� 4l7hIIIIIIIVV]xúWï‚»Sd–‡sÿ% ÿ2245676976    1uhˆ1ïSåw,ÍS”^SOû|-N,*g R;m'`­pêS(u…�ðX��\ŒTêS R;m'`­p N(u…�ðX��\öe,ù[ŽN]xúWï‚_N/f gNš[„v»Sd–‡s„vÿFO/fS_$NÍy¹eÕlT€(uöe,]xúWï‚„v»Sd–‡sf>fžX'Y,vQ-N,gTNÍy¹eÕl,sS;m'`­pÕlN…�ðXâlÕlT€(uÕlù[ŽN]xúWï‚„v»Sd–‡s/fg'Y„v.Ù�b¸‹/fàV:N,…�ðXâlïSåNSbŽx'YRP[,OvQôf¹[fÛ�eQ;m'`­p„v®_T[ÿ Töenmv^;mS†N;m'`­p„vhˆb—,OvQhˆb—„v]xúWï‚Sm¦^;`/fYŽNƒ�NO„v¶r`, €O¶n²m-N„v]xúWï‚ôf¹[f«ˆ8TD–Ç�eg. 2.3…�ðX;`öe•ù[]xúWï‚»Sd–‡s„vq_ÍT     ÖS120ml]xúWï‚Sm¦^:N100mg/L„vŸ^4l7h,HQ ReQ5g;m'`­p,Û�Lˆ…�ðX��\Yt,agöN:N��\öeô•2s,ô•Gköeô•:N1.5sagöN.9eØS…�ðX��\\O(u„v;`öe•,Ó~œg‚YþV1.  INCLUDEPICTURE "http://www.chemistrymag.org/cji/2007/images/09401701.gif" \* MERGEFORMATINET  þV1 …�ðXöe•ù[]xúWï‚»Sd–‡s„vq_ÍT Fig.1 Effect of total time on degradation of nitrobenzene  INCLUDEPICTURE "http://www.chemistrymag.org/cji/2007/images/09401702.gif" \* MERGEFORMATINET  þV2 …�ðXöeô•ù[]xúWï‚»Sd–‡s„vq_ÍT Fig.2 Effect of sonic time on degradation of nitrobenzene     1uþVïSÁ‰,9eØS…�ðX��\\O(u„vöe•,(WRËY6–µk,]xúWï‚„v»Sd–‡s/f�nžX'Y„v,Ù�/fàV:N…�ðX��\öeô•ö^•,·OHê�1uúWSm¦^žX'Y, …�4NLu4l'lS(Super critical water oxidation SCWO)„v\O(užX:_,]xúWï‚»Sd–‡s1\ÐcØš[10],FOS_35minT,M–㉻Sd–‡sò]‹�ŽNs^3z,€Q†0R‚‚¦~b,g, 35min:NgsO…�ðXöe•. 2.4 ��\öeô•ù[]xúWï‚»Sd–‡s„vq_ÍT     ÖS120ml]xúWï‚Sm¦^:N100mg/L„v4l7h,HQ ReQ5g;m'`­p, Û�Lˆ…�ðX��\Yt35min.Ç�änTÖSän²mKm]xúWï‚Sm¦^,¡‹—{»Sd–‡s.9eØS…�ðX„v��\\O(uöeô•,Ó~œg‚YþV2@b:y.     1uþVïSåN wúQ,9eØS…�ðXöeô•,ù[ŽN]xúWï‚»Sd–‡s/f gq_ÍT„v,�–@w…�ðXöeô•„vžX•,]xúWï‚„v»Sd–‡sHT°sžX'Y„v‹�¿R,S_öeô•<3söe,žX•‹�¿Rƒ�'Y,FO/f3sT,žX•‹�¿Rò] Nf>f,@båN,gsO„v…�ðXöeô•:N3s. 2.5 RËYpHf,ô‹fpHù[YtHeœgq_ÍT N'Y,NpHe,þf Ï‚.¯sƒXalÓg»lt€b/gN¾‹Y, 2002,3(5):31-35. [2] H– „,±�~t.5�Þ]Så],2004,29ÿ2 ÿÿ30-35 [3] BHATNAGAR A,CHEUNGHM. EnvironSciTechnol,1994,28(8):1481-1486. [4] KOTRONAROUA,MILLSG,HOFFMANNMR. EnvironSciTechnol,1992,26(7):1460-1462. [5] VISSCHERAD,EENOOPV,DRIJVERSD et al. J phys Chem,1996,100(28):11636-11642. 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