Reza Norouzbeigi
School of Chemical, Petroleum and Gas Engineering, Iran University of Science & Technology (IUST), Tehran, Iran
[ 1 ] - A comparative study of malachite green removal from an aqueous solution using raw and chemically modified expanded perlite
Adsorption of malachite green (MG) from an aqueous solution onto unexpanded perlite (UP), expanded perlite (EP) and NaOH-modified unexpanded perlite (NaOH-UP) powders has been investigated. The effects of contact time, pH, initial dye concentration, adsorbent dosage and temperature have been evaluated. The adsorbents were characterized by Brunauer-Emmett-Teller (BET) analysis, Fourier transform...
[ 2 ] - Removal of crystal violet from aquatic environment by surfactant-modified dolomite
This paper presents the adsorption of crystal violet (CV+) from aqueous solution on surfactant-modified dolomite. Liquid phase batch operations were carried out to observe the effect of various experimental parameters such as initial dye concentration, adsorbent dosage, pH and NaCl concentration. The optimum conditions for these parameters were calculated by Taguchi method. Equilibrium isotherm...
[ 3 ] - بررسی اثر پلی‌اتیلن گلایکول بر رفتار ترشوندگی سطوح آبگریز ZnO تهیه شده به‌روش رسوب‌دهی حمام شیمیایی
A superhydrophobic ZnO surface was prepared on the stainless steel mesh by a one-step chemical bath deposition method without chemical post-treatment. The effect of adding polyethylene glycol 6000 (PEG 6000) as an organic additive and the type of the alkaline agent were investigated on the morphological and wettability properties of ZnO surfaces. The prepared surfaces were characterized by X-ra...
[ 4 ] - Thermal and chemical modification of bentonite for adsorption of an anionic dye
Raw bentonite (RB), a known low-cost versatile clay was used as an adsorbent. RB was treated thermally and chemically to increase its adsorption capacity. For thermal treatment (TTB), the bentonite was heated at 400 °C for 60 min, and for the chemical modification, its surface was treated by cetyltrimethylammonium bromide (CTAB) to prepare organo-modified bentonite (CTAB-B). The removal of Cong...
[ 5 ] - تولید سطوح آبگریز با پوشش‌دهی اکسیدقلع بر روی پایه آلومینیم: مدل‌سازی و تحلیل با استفاده از شبکه عصبی مصنوعی
در این پژوهش، بذرلایه‌های مختلف با روش غوطه‌وری بر روی پایه آلومینیم کشت شدند. لایه نشانی حمام شیمیایی نیز برای پوشش‌دهی اکسید قلع بر روی بذرها مورد استفاده قرارگرفته است. 18 آزمایش تجربی با استفاده از طراحی آزمایش تاگوچی طرح ریزی گردید. با توجه به نتایج، از بین نوع فعال سطح و غلظت فعال سطح در بذرلایه، تعداد لایه‌های بذرلایه، جنس بذرلایه و غلظت پیش‌ماده، غلظت فعال سطح بیشترین تاثیر را بر رو...
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