پديد آورنده :
بهنام، ساناز
عنوان :
تصفيه محلول هاي حاوي مس با استفاده از جاذب هاي توليد شده از قارچ موكوراينديكوس
گرايش تحصيلي :
مهندسي شيمي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
سيزده،89ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
ارجمند مهرباني، كيخسرو كريمي
توصيفگر ها :
تصفيه پساب , ديواره سلولي , كيتوزان , كتين , مورفولوژي
تاريخ نمايه سازي :
10/9/93
استاد داور :
حميد زيلويي، نوراله ميرغفاري، فواد آقاميري
كد ايرانداك :
ID689 دكتري
چكيده انگليسي :
95AbstractHeavy metal pollution is one of the most important environmental concerns which affects thehuman life In order to remove heavy metals using adsorbents with biological origin isinteresting because of their high yield and low expenses Fungi especially zygomycetes areable to remove heavy metals from aqueous solutions Dimorphic fungus Mucor indicus is oneof the best microorganisms for ethanolic fermentation from lignocelluloses It also has achitosan rich cell wall which makes it a good adsorbent for heavy metal removal In thisthesis the biomass of M indicus was used to produce different fungal biosorbents First copper ions biosorption using chitosan obtained by deacetylation of shrimp chitin and chitosanextracted from M indicus cell wall were compared Both chitosans could remove copper ionsfrom aqueous solution with a similar performance Biosorption process was faster for fungalchitosan and reached equilibrium within three hours With increasing pH biosorption capacitywas increased while temperature did not affect the process Evaluating the performance of M indicus and its derivatives including cell wall and cell wall components chitin and chitosanrich fraction in copper ions removal from aqueous solutions showed that fungal biomass alkali treated biomass AIM and extracted chitosans could effectively remove copper ions Furthermore the acid type used for chitosan extraction did not considerably affect thebiosorption capacity of chitosans or chitins while the process for the biosorbents obtainedusing acetic acid was faster than that using hydrochloric acid Biosorption capacity of fungalchitosan and AIM was similar and the untreated biomass had a weaker performance incomparison to the treated one Fungal chitin biosorption capacity enhanced with a simplealkali washing Higher pH values enhanced biosorption capacities Filamentous and yeast likemorphologies were also used for copper removal from aqueous solutions For bothmorphologies FTIR analysis and potentiometric titration showed the presence of carboxylic phosphate and amine groups on cell s surface Lipid did not show a considerable effect onbiosorption Basic treatment increased biomass biosorption capacity Biosorption occurredthrough ion exchange complex formation and physical adsorption Langmuire modelpredicted a higher adsorption capacity for filamentous form than the yeast like one Alkalitreated biomass of both morphologies showed similar performance for copper removal Ho spseudo second order model predicted the kinetics data of all biosorbents The order of fungalbiosorbents capacity for removal of copper ions presented in effluent of an industrial unit was chitosan AIM filamentous form biomass alkali washed chitin yeast like biomass chitin Keywords Cell wall Chitin Chitosan Copper Fungus Morphology Mucor indicus Wastewater treatment
استاد راهنما :
ارجمند مهرباني، كيخسرو كريمي
استاد داور :
حميد زيلويي، نوراله ميرغفاري، فواد آقاميري
