Mohammad Chalkosh Amiri
Department of Chemical Engineering, Isfahan University of Technology, Isfahan, I.R. Iran
[ 1 ] - Role of Surface Phenomena on Converter Slag Composition
For beneficiation of converter slag, the role of surface phenomena on slag composition was studied. This work includes some experimental data, which were measured for basic oxygen steel (BOS) slag in Isfahan Steel Plant. All data were collected on site in the plant. The results support the idea that surface activity plays a major role in converter slag formation. It was also a new finding t...
[ 2 ] - Effect of Metal Salt Coagulants on Treatment of Activated Sludge Effluent in Sulfite Mill Pulp and Paper Plant
Pulp and paper effluents are considered as serious environmental hazards and their treatment, because of multiplicity of impurities and complexity of their chemical structures, is one of the most difficult and inconvenient industrial processes. As the most pulp and paper mill work on kraft process, there are few studies in literature on the treatment of neural sulfite semi chemical (NSSC) p...
[ 3 ] - A Simple Method for Evaluating the Cleaning Power of Commercial Detergents
Commercial detergents, in spite of their various names and marks, are used to remove foreign matter (dirt) from substrate. Following removal of dirt from the surface, it is necessary to prevent redeposition, so the detergent must have supending power. In this experimental work, a simple method has been developed to evaluate the cleaning power of commercial detergents. The method, showing th...
[ 4 ] - Ability of Aphron Flotation in Whey Treatment
Whey contains more than half of total solids present in the original milk, which includes 20% of the proteins, most of the lactose, minerals and water soluble vitamins. In this study, selective separation of whey components by Aphron flotation (separation of ultrafine particles by micro-bubbles) has been investigated. It has been shown that it is possible to recover valuable components of w...
[ 5 ] - تعیین پارامترهای مؤثر بر فرایند نمکزدایی سفالینه‌های بدون لعاب در سیستم غوطه‌وری با استفاده از روش طراحی آزمایشات پاسخ سطح
Deterioration of historical porous materials as a result of crystallization of soluble salts is a well-known phenomenon. Optimizing the water consumption in desalination of historical potteries is highly desirable due to safety and conservation of materials. The present paper describes adoption of a response surface methodology (RSM) in central composite design (CCD), through systematic changes...
[ 6 ] - ارزیابی عملکرد شاخص هدایت الکتریکی در پایش فرایند نمک زدایی سفالینه های تاریخی
نمکهای محلول از مهم ترین عامل های آسیب رسان به ساختار سرامیک های تاریخی شناخته می شوند که بر اثر ایجاد فشار ناشی از بلورین شدن و هیدراسیون در چرخه های تر و خشک شدن، سبب ایجاد ترک ها و ریزترک ها، پوسته شدن و پودری شدن و سرانجام تخریب اثر میشوند. با توجه به نیاز به انجام عملیات نمکزدایی به منظورخارج کردن نمک های محلول آسیب رسان و اهمیت این مرحله به دلیل تماس مستقیم سفالینه تاریخی...
[ 7 ] - Modified Kremser Equation for Plate Type Gas Absorberin Non-Isothermal Operation (RESEARCH NOTE).
For non-isothermal operation in plate type gas absorber, the temperature changes and number of ideal trays can be determined with recourse to graphical method. In this paper there is an analysis illustrating that a Modified Kremser Equation can be used for plate type gas absorber in non-isothermal operation.
[ 8 ] - Separation of Ultra - Fine Sulphur Particles from Nta Dispersion by Aphron Flotation
Oxidative scrubbing is used to remove H2S from gas streams. A key problem in regeneration of the absorbent is the removal of fine particles of sulphur from the suspension of the scrubbing liquid. Dispersions of ultra-fine bubbles have been called "colloidal gas aphrons" or aphrons for short. These dispersions have interesting properties and it was found that they have particular advantages in t...
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