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1、———————————型絲塑篁墜—————一——飾后水稻秸稈的解吸率即可達到90%以上。通過吸附~解吸循環(huán)10次的試驗表明,水稻秸稈的吸附容量沒有發(fā)生明顯的變化,表明修飾水稻秸稈在富營養(yǎng)化水體處理方面,具有較高的實用價值。關(guān)鍵詞:水稻秸稈;乙二胺;吸附;磷酸根llI鬻簿霧鬟菌泌壤溱薹窨,葛P霧荽囂黼繁㈣耥翳掛蠡薯’藕}瓣醚垂鎏鍾池粼漂震霧好≯囂善j鬻翳黼黝灌糍冀黼鬻羹囊馨燃鬻震麟鬣澎勘駕貶礎(chǔ)∽姆嘲攝囂蓬Ⅳ監(jiān)器。拳麓鬟》驂劈姓翁藎黲蠹成鼯薅翥~囂薩蟾籍磐鬻鬻露灞潮淄黼蠶溺瀚躺』__掣,}^;i%i亳≯£^。,*鼻..
2、邛璀融鬣澎.。囂麓擎露孥捧濺凌鞲瓣鬻麟就冀《l*№羧戛營囊目攀辮卅攀聹一囂豁污∞瓣繁鼙一嗣群弱鬟鍵溺翥簸鎏蠢鍪m娶m群AbstractRicestraws(RS)areregardedasabundantandavailablebiologicalresources.Butmostofthemareabandonedorcombustedwithoutproperutilizationleadingtoenvironmentalpollutionandsafetyincidents.Theproblemofeutr
3、ophicationisoneoftheseriouswaterpollutionproblems.Itmainlybecauseofexcessivenutrientsinwatercontainingnitrogenandphosphorusavailableforalgae,inwhichphosphorusisthelimitingfactorofthealgaeproliferationiscausedbywatereutrophic·ationkeynutrients.Inthispaper,theor
4、iginalmethodbasedonricestrawanionicsorbentsynthesizedandappliedtowater,phosphateadsorptionstudies.Modifiedricestraw(MRS)waspreparedfromriceresidueafterreactionwithepichlorohydrinandtriethylamineinthepresenceofN,N—dimethylformamideandethylenediamine.Anoptimalsy
5、nthesisconditionofMRSWasdeterminedafterthesingleinfluentialfactorexperiments.Dataofphosphateremovalandyieldwereusedasperformanceindicatorsoftheproductsprepared.ThephysicalandchemicalcharacteristicsofRSandMRS’wereexaminedbylotsofinstruments,suchasscanningelectr
6、onicmicroscope,elementalanalysisinstrument,infraredspectroscopyinstrumentandavarietyofchemicalmethods,andwerecomparedwiththeoriginalricestraw.Theresultsindicatedthatthedosagesofreactants,experimentaltimeandexperimentaltemperaturesallinfluencedthepreparationofM
7、RS,SOtheconditionsshouldbestrictlycontrolledinthemodificationprocess.Thebestadsorptionconditions:pH4to1O;adsorbentdosageof59/L;temperatureontheadsorptioneffectisnotsignificantlyaffected,SOtheactualapplicationisnotsubjecttothelimitationsofseasonaltemperature.Th
8、erateofphosphorusremovalwasmorethan90%.ThephysicalandchemicalcharacteristicsofMRShadsignificantdiffei‘encewiththoseofRS.ThesurfaceofMRSwereasclearerandsmootherincomparisonwithRS,an