کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
588063 1453336 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of Nickel hydroxide nanoplates modified activated carbon for Malachite Green removal from solutions: Kinetic, thermodynamic, isotherm and antibacterial studies
ترجمه فارسی عنوان
آماده سازی کربن فعال اصلاح شده نانوصفحات هیدروکسید نیکل برای حذف مالاکیت سبز از راه حل ها: مطالعات جنبشی، ترمودینامیک، همدما و ضدباکتری
کلمات کلیدی
نانوصفحات هیدروکسید نیکل ، کربن فعال. جذب؛ مالاکیت سبز؛ فاز مایع؛ مطالعه ضدباکتری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی


• Ni(OH)2-NP-AC was used as efficient adsorbent for removal of Malachite green.
• The optimized contact time and pH was found to be 15 min and 6.5, respectively.
• MG adsorption increases as the Ni(OH)2-NP-AC dose increased.
• 0.7 g L−1 was chosen as the optimum adsorbent dose.
• Adsorption of MG dye onto Ni(OH)2-NP-AC was spontaneous and endothermic.

An extremely small size novel adsorbent, nickel hydroxide nanoplate loaded on activated carbon (Ni(OH)2-NP-AC) was synthesized using a simple, low cost and highly efficient method. The developed adsorbent was used for the removal of hazardous MG dye from the aqueous solution. To evaluate the importance of Ni(OH)2 nanoplates on the adsorption and removal process, the contact time of virgin AC and Ni(OH)2-NP-AC were compared (under the same conditions) that the results showed Ni(OH)2 nanoplate had a crucial role in the removal or adsorption process. The surface unique textural and morphological properties such as high surface area (>960 m2 g−1) and low pore size (<3.5 nm) made it possible for efficient and rapid removal of MG. Subsequently, the impact of various influential variables such as pH, adsorbent dosage, initial dye concentration, contact time and temperature were examined and optimized. The adsorption kinetic and equilibrium data of MG were found well fitted and found to be in good agreement with pseudo-second-order and Langmuir models, respectively. Finally, antibacterial activity of the synthesized nanoplates was evaluated by testing against some Gram-negative and Gram-positive bacteria. The results of this antibacterial testing indicated that the synthesized nanoplates showed effective bactericidal activity.

Textural and morphological surface presentation of developed adsorbent.Figure optionsDownload high-quality image (306 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Process Safety and Environmental Protection - Volume 102, July 2016, Pages 85–97
نویسندگان
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