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RISحذف مخلوط یون های فلزی سرب، نیکل و کادمیم از محلولهای آبی با استفاده از جاذب نانوحفره MCM-41 اصلاح شده
گروهی از جاذبهای سیلیکاتی میان حفره تحت عنوان MCM-41 که مساحت سطح زیادی دارند، با اصلاح برخی از گروههای عاملی سطحی توسط گروه های آمین و ایجاد گونه اصلاح شده NH2-MCM-41، به ظرفیت جذب بالاتری برای جذب یون های فلزات سنگین دست ...
Selective adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution using chitosan–MAA nanoparticles
Chitosan–MAA nanoparticles (CS–MAA) with an average size of 10–70 nm were prepared by polymerizing chitosan with methacrylic acid in aqueous solution. The physicochemical properties of nanoparticles were investigated using ...
Controllable Synthesis of Flower-Like ZnO Nanostructure with Hydrothermal Method
Flower-like ZnO nanostructures were synthesized by decomposing Zn(OH)2 in 1,4- butanediol at 105 °C for 36 h. Size of flower-like ZnO nanostructure can be controlled by pH of the aqueous solution. In the preparation of ...
Removal of Ni(II), Cd(II), and Pb(II) from a ternary aqueous solution by amino functionalized mesoporous and nano mesoporous silica
In the present study, the application for the removal of Ni(II), Cd(II) and Pb(II) ions from aqueous solution by using mesoporous silica materials, namely, MCM-41, nanoparticle of MCM-41, NH2-MCM-41 (amino functionalized ...
تولید نفت زیستی از پیرولیز سریع بقایای ذرت و چوب اکالیپتوس در رآکتور بستر سیال
پیرولیز سریع یک از فناوری‌های جذاب برای تولید سوخت مایع (نفت زیستی) از زیست‌توده است که پتانسیل زیادی برای استفاده در صنعت و حمل‌ونقل دارد. ضایعات ذرت (چوب و کلش) و چوب اکالیپتوس به‌عنوان دو منبع لیگنوسلولزی، از فراوانی ...
Evaluation of CO2 adsorption with eucalyptus wood based activated carbon modified by ammonia solution through heat treatment
Eucalyptus wood was used to produce activated carbon by chemical activation with H3PO4 as an adsorbent for adsorption of CO2. It was subjected to thermal treatment with the ammonia solution at 400 and 800 °C in order to ...
Amino-functionalized mesoporous MCM-41 silica as an efficient adsorbent for water treatment: batch and fixed-bed column adsorption of the nitrate anion
In the present study, amino-functionalized Mobil Composite Material No. 41 (MCM-41) was used as an adsorbent to remove nitrate anions from aqueous solutions. Mono-, di- and tri-amino functioned silicas (N-MCM-41, NN-MCM-41 ...
Effect of process conditions on product yield and composition of fast pyrolysis of Eucalyptus grandis in fluidized bed reactor
The fast pyrolysis of eucalyptus wood was conducted in a continuous-feed fluidized bed reactor. The effect of pyrolysis temperature, nitrogen flow rate, biomass feed rate and biomass feed size was investigated. The results ...
Adsorptive removal of CO2 on highly microporous activated carbons prepared from Eucalyptus camaldulensis wood: Effect of chemical activation
A series of activated carbons (ACs) were prepared from Eucalyptus camaldulensis wood by chemical activation with H3PO4, ZnCl2 at different impregnation ratios as well as by pyrolysis, followed by activation with KOH. The ...
Production and Characterization of Sewage-Sludge Based Activated Carbons Under Different Post-Activation Conditions
In the present study, sewage sludge (SS) was applied for the preparation of activated carbons (ACs) by chemical activation with phosphoric acid (H3PO4) and acid (HCl, HF) and base (NaOH) washing as post-treatment steps ...