Yadollah Yamini
[ 1 ] - Ultra Efficient Removal of Basic Blue 41 from Textile Industry’s Wastewaters by Sodium Dodecyl Sulphate Coated Magnetite Nanoparticles: Removal, Kinetic and Isotherm Study
This research presents adsorption potential of surfactant (sodium dodecyl sulphate; SDS) coated magnetite nanoparticles as suitable and efficient adsorbent for the removal of Basic Blue 41 (BB 41), as a cationic dye from textile’s company wastewater. The effects of various experimental parameters (e.g. initial pH of the solution, SDS amount, and ionic strength) on the adsorption efficiency of B...
[ 2 ] - Optimization and Comparison of Ultrasound-Assisted Extraction of Estragole from Tarragon Leaves with Hydro-Distillation Method
A comparative study of ultrasound-assisted extraction (UAE) and hydro-distillation was performed for fast extraction of estragole from tarragon (Artemisia dracunculus L.) dried leaves. Several influential parameters of the UAE procedure in the extraction of estragole (type of solvent, extraction cycles, solvent to material ratio, irradiation time and particle size) were investigated an...
[ 3 ] - Experimental Study and Modeling of Supercritical Extraction of Nicotine from Tabacco Leaves
In this work, the solubility of nicotine extracted from tobacco leaves, found in the north of Iran, in supercritical carbon dioxide has been measured. Also the effects of pressure, temperature, extraction dynamic time, and the organic co-Solvent on the amount of nicotine extracted from tobacco leaves have been investigated. It should be stressed that in order to reduce significantly the num...
[ 4 ] - Sensing of Iron Ions by Solid Phase Spectrophotometry
A new sensitive and selective spectrophotometric method for the determination of iron using a PVC membrane containing bathophenanthroline and dioctylphethalate as the solid phase extraction medium is investigated. Fe(II) in an aqueous sample solution is trapped on the membrane with an anion species, picrate ion and forms a complex with bathophenanthroline. The absorbance of the red-orange m...
[ 5 ] - Investigation of effect of sulfate ion on xanthate consumption in galena flotation based on thermodynamic diagrams
Flotation is a common process in sulfide ore beneficiation. Due to the restrictions and lack of access to high-quality water sources for industrial purposes, recycled water plays an important role in the flotation processes. Due to the existence of various organic and inorganic substances in the process, water influences the flotation performance. In this work, the effect of accumulation of sul...
[ 6 ] - Modified magnetite nanoparticles with cetyltrimethylammonium bromide as superior adsorbent for rapid removal of the disperse dyes from wastewater of textile companies
This paper reports application of cetyltrimethylammonium bromide (CTAB) coated magnetite nanoparticles (Fe3O4 NPs) as a novel adsorbent for removal of two types of disperse dyes, including disperse red 167, and disperse blue 183, from wastewater of textile companies. The effect of parameters including type of surfactant, pH of solution, surfactant concentration, and amount...
[ 7 ] - حذف فتوکاتالیستی استایرن از هوا با استفاده از نانو ذرات دی اکسید تیتانیوم تثبیت شده برروی زئولیت طبیعی اصلاح شده و پرتو گاما
زمینه و هدف: هدف از این تحقیق بررسی مقایسه ای راندمان حذف استایرین با استفاده از زئولیت طبیعی سمنان و زئولیت طبیعی اصلاح شده پوشش نانو ذرات TiO2 به عنوان عامل کاتالیستی می باشد. روش‌ها: از زئولیت طبیعی به قطر 1 تا 2 میلی متر استفاده شد. اصلاح زئولیت طبیعی با اسید کلریدریک یک نرمال انجام گرفت. سطح و حجم منافذ بستر با روش BET تعیین شد. ساختار سطحی توسط میکروسکوپ الکترونی مشخص گردید. جریان هوای مد...
[ 8 ] - مقایسه بازده و ترکیبهای اسانس دو گونه مرزه Satureja hortensis L. و Satureja rechingeri Jamzad با استفاده ازروش تقطیر و استخراج با سیال فوق بحرانی
جنس مرزه Satureja از خانواده نعناعیان می‌باشد و گونه‌های زیادی از آن در سرتاسر جهان پراکنده‌اند. این جنس در ایران 15 گونه دارد که 9 عدد از آنها انحصاری هستند. اسانس گونه‌های مختلف مرزه به دلیل دارا بودن کارواکرول از اهمیت ویژه‌ای برخوردارند. در این تحقیق به منظور بررسی تاثیر روش اسانس‌گیری بر میزان کارواکرول و در نتیجه کیفیت اسانس مرزه، اسانس دو گونه از این جنس به نامهای Satureja hortensis L...
نویسندگان همکار