水稻秸秆阴离子吸附剂的制备与其性能分析 (1)

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1、———————————型丝塑篁坠—————一——饰后水稻秸秆的解吸率即可达到90％以上。通过吸附～解吸循环10次的试验表明，水稻秸秆的吸附容量没有发生明显的变化，表明修饰水稻秸秆在富营养化水体处理方面，具有较高的实用价值。关键词：水稻秸秆；乙二胺；吸附；磷酸根llI鬻簿雾鬟菌泌壤溱薹窨，葛P雾荽嚣黼繁㈣耥翳挂蠡薯’藕}瓣醚垂鎏锺池粼漂震雾好≯嚣善j鬻翳黼黝灌糍冀黼鬻羹囊馨燃鬻震麟鬣澎勘驾贬础∽姆嘲摄嚣蓬Ⅳ监器。拳麓鬟》骖劈姓翁荩黪蠹成鼯薅翥～嚣萨蟾籍磐鬻鬻露灞潮淄黼蚕溺瀚躺』__掣，}^；i％i亳≯￡^。，*鼻．．

2、邛璀融鬣澎．。嚣麓擎露孥捧溅凌鞲瓣鬻麟就冀《l*№羧戛营囊目攀辫卅攀聍一嚣豁污∞瓣繁鼙一嗣群弱鬟键溺翥簸鎏蠢鍪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