Page 24 - 《水资源与水工程学报》2024年第5期
P. 24
!35 "!5 # & ' ( ) & * + , - Vol.35No.5
2024 $ 10 % JournalofWaterResources&WaterEngineering Oct.,2024
DOI:10.11705/j.issn.1672-643X.2024.05.03
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äXËQ$i4@Ç#{A¿, ]¥Ìð8y·¨«{Ð)
'。¥XÎI=kÌÐ){Þß>ð§¨。ÍÎÏ@Þß%<ð¬, KOH@¥È, FeCl·6HO
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@UÐ(È, _JÎ=kÌ(KFBC), |_JÍÎÏ=kÌ(BC) '@ðB。çè¼y²Ñ]¢£ KOH¥
ä FeCl{Òòð KFBC{°äK{, óÐ)ð< KFBCð(÷Q{X
(TC) ÙXËQ(CIP)
3
{Ð)1ä¸。°±²o:KOH¥á$í4þ¼{ö°aÓ, BC{Ô1Õ{y¤ä1C BC{²
ES;FeCl{Òò$¯Ï BC{Ö, ·RÁ KFBC{WXR; Ð)îl¹ pHD,KFBC1×é¨æ¬
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£{ pHefOuvÐ)。KFBCÐ) TCÙ CIP X.Ð)@Þ, ÃX+&、 Ðæ、 +%¯cäد{·»;KF
BCð TCÙ CIP {ªôeÐ)1*Ö 743 ä 794mg/g;KFBC{ÞO¸_ÎuUSÐ), ]X45aUä π —
π'å@Þ, A®äÙè'«&Ú#ß'。
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MNFOP:TQ424;X703 QRSTU:A QVWP:1672643X(2024)05002011
PreparationofironbasedbiocharbyKOHactivationand
itsadsorptionpropertiesfortetracyclineandciprofloxacin
1
1
1
1,2
1
1
NIEFahui,LIJiacheng,WUQin,LIUZhanmeng ,XUZhiwei,GUANKun
(1.SchoolofCivilEngineeringandArchitecture,EastChinaJiaotongUniversity,Nanchang330013,China;
2.SchoolofCivilandArchitecturalEngineering,NanchangInstituteofTechnology,Nanchang330099,China)
Abstract:Antibioticswithlowermetaboliclevelssuchastetracycline(TC)andciprofloxacin(CIP)can
causeseriouspollutiontowaterbodies ,biochar(BC)iscommonlyusedforthetreamentofwastewaterpol
lutedbytheseantibiotics.Activationisoneofthemainmethodstoimprovetheadsorptionpropertiesofbio
char.Withbagasseastherawmaterial ,anovelmodifiedbiochar,namelyKFBC,waspreparedusingKOH
astheactivatorandFeCl·6HOastheimpregnatingsolvent;inthemeantime,bagasseBCwasalsopre
3 2
paredforthestudyasthecontrol.Firstly,theeffectsofKOHactivationandFeCldopingonthestructural
3
andphysicochemicalpropertiesofKFBCwereanalyzedbyvariouscharacterizationmethods.Then,thead
sorptionpropertiesandmechanismofKFBContetracyclineorciprofloxacininsolutionswereinvestigatedby
theadsorptionmethod.Theresultsshowthatmorecarbonstructuredefectsform afterKOH activation ,
whichaffectsthetypeandquantityoffunctionalgroupsandsurfaceelectricityofBC.ThedopingofFeCl
3
enhancesthemagneticpropertiesofBCandfacilitatestherecyclingofKFBC.Inaddition,pH haslittle
effectontheadsorptionreaction,whichindicatesthattheadsorptionbyKFBCactinawidepHrange.The
adsorptionofTCandCIPbyKFBCisfeaturedbychemisorption ,whichisaspontaneousandendothermic
processwithincreasingfreedomandentropy.ThetheoreticalmaximumadsorptioncapacityofTCandCIP
byKFBCcanreach743and794mg/g.ThedominantmechanismofKFBCisnotelectrostaticadsorption
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+,-.: Ã&l(1977—), H, ôJ6Ä9, :;, ÅMN, u;=OP, ÞßfA]_ª[{%<。
/0+,: FÆ(1977—), H, ôJ6Ä9, MN, u;=OP, %<>?@AÀà_@CAÀÇÈ.。