پديد آورنده :
تخت كوسه، آرش
عنوان :
كاربرد ضايعات معدني به عنوان جاذب سرب از محلول هاي آبي
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان، دانشكده عمران
صفحه شمار :
پانزده، 134، [II] ص. : مصور، جدول، نمودار
يادداشت :
ص. ع. به : فارسي و انگليسي
استاد راهنما :
امير تائبي
استاد مشاور :
مجيد افيوني
توصيفگر ها :
فاضلاب هاي خانگي , فاضلاب هاي صنعتي و سطحي , تركيب شيميايي , انعقاد و لخته سازي , شناور سازي , فيلترسيون غشايي , تبادل يوني , تصفيه الكترو شيميايي , جذب
تاريخ نمايه سازي :
21/7/1387
استاد داور :
بيژن بينا، مجيد سرتاج
چكيده فارسي :
به فارسي و انگليسي : قابل رويت در نسخه ديجيتال
چكيده انگليسي :
Abstract Removing or decreasing Lead concentration of wastewater to the permitted levelsbefore discharging to the environment is important because its bioaccumulation and non biodegradation Removal of metal ions from wastewaters has been performed by chemicalprecipitation membrane filtration ion exchange reverse osmosis evaporation electrolysisand adsorption processes The best treatment choice among these methods depends onheavy metal concentration in the wastewater and treatment costs Adsorption is widelyused for removal of heavy metals from wastewater because of its simplicity and low cost Many natural and synthetic adsorbents are used for this method Recently naturaladsorbents have gained importance and the choice of these materials depends on theiravailability cost and adsorption capacity In this study removal of Pb II from aqueoussolutions by adsorption onto dolomite travertine blast furnace slag BFS and activatedcarbon AC was investigated as a function of initial metal concentration in the range of 5 100mg L initial pH in the range of 2 6 5 stirring speed in the range of 50 200 rpm and adsorbent dosage in the range of 1 10g L in a batch system The optimum conditionswere found by Taguchi approach The results show that the equilibrium time for dolomiteand travertine is 4hr in BFS is 2hr and for AC is 1hr Also sorption data of metals aredescribed by Langmuir Freundlich and BET models and the equilibrium process isdescribed well by the Freundlich isotherm model The maximum removal of lead obtainedfrom batch studies was more than 99 8 for BFS initial concentration 25mg L initialpH 6 5 stirring speed 50rpm and adsorbent dosage 7g L 99 9 for dolomite initialconcentration 25mg L initial pH 6 5 stirring speed 100rpm and adsorbent dosage 7g L and travertine initial concentration 50mg L initial pH 6 5 stirring speed 100rpm andadsorbent dosage 4g L and and 99 7 for AC initial concentration 50mg L initial pH 6 5 stirring speed 100rpm and adsorbent dosage 10g L All of experimental factors wasstatistically significant on Pb II removal for dolomite travertine and AC while stirringspeed was not statistically significant for BFS Overall it can be concluded that thedolomite and travertine and BFS perform well for the removal of Pb II ions fromwastewaters as a low cost adsorbent
استاد راهنما :
امير تائبي
استاد مشاور :
مجيد افيوني
استاد داور :
بيژن بينا، مجيد سرتاج
