پديد آورنده :
جمالي نژاد، محمد
عنوان :
كاربرد ضايعات معدني دولوميت به عنوان جاذب رنگ از محلول هاي آبي
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران
صفحه شمار :
چهارده،114ص: جدول،نمودار
يادداشت :
ص.ع. به: فارسي و انگليسي
استاد مشاور :
مجيد مرتضوي
توصيفگر ها :
جذب سطحي , تاگوچي , سينتيك , ايزوترم , فاضلاب هاي نساجي
تاريخ نمايه سازي :
19/10/88
استاد داور :
محمد مهدي امين، مجيد سرتاج
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
Removal of Dyes from Aqueous Solutions by Dolomite Wastes Mohammad Jamali Nejad mjamali@cv iut ac ir May 24 2009 Department of Civil Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Amir Taebi amirth@cc iut ac irAbstract Establishment of severe environmental roles by governments and economical consideration have causeda great attention toward removal of pollutants from industrial wastes The wastewaters of textile industriesare large in volume and have different quality Therefore their treatments are complicated Removal dyesfrom wastewaters has been performed by coagulation and flocculation oxidation membrane filtration ionexchange electrolysis and adsorption processes The best treatment choice among these methods depends ondye concentration in the wastewater and treatment costs Adsorption is widely used for removal of dyes fromwastewater because of its simplicity and low cost Many natural and synthetic adsorbents are used for thismethod Recently natural adsorbents have gained importance and the choice of these materials depends ontheir availability cost and adsorption capacity In this study removal of dye from aqueous solutions byadsorption onto charred dolomite and activated carbon AC was investigated as a function of initial dyeconcentration in the range of 50 200mg L initial pH in the range of 2 8 stirring speed in the range of 50 200rpm and adsorbent dosage in the range of 2 8g L in a batch system The optimum conditions werefound by Taguchi approach Also sorption data of dyes are described by Langmuir Freundlich and BETmodels and the equilibrium process is described well by the Freundlich isotherm model The principleadsorption takes place at the first time of the adsorption process In optimum conditions the maximumremoval of dye obtained from batch studies for the adsorption of Acid Red 88 on charred dolomite initialconcentration 50mg L initial pH 6 stirring speed 200rpm and adsorbent dosage 8g L for Acid Red 88 onAC initial concentration 200mg L initial pH 2 stirring speed 100rpm and adsorbent dosage 4g L forReactive Red 29 on charred dolomite initial concentration 50mg L initial pH 2 stirring speed 200rpm andadsorbent dosage 6g L and for Disperse Red 151 on charred dolomite initial concentration 100mg L initial pH 4 stirring speed 200rpm and adsorbent dosage 8g L was more than 99 All of experimentalfactors was statistically significant on dye removal while adsorbent dosage was not statistically significantfor adsorption of Acid Red 88 onto AC Overall it can be concluded that the charred dolomite perform wellfor the removal of acid reactive and disperse dyes from wastewaters as a low cost adsorbent Keywords Adsorption Dyes Dolomite Taguchi Kinetics Isotherm Wastewaters oftextile
استاد مشاور :
مجيد مرتضوي
استاد داور :
محمد مهدي امين، مجيد سرتاج
