کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5209325 | 1503044 | 2017 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effective adsorption of hexavalent chromium using biopolymer assisted oxyhydroxide materials from aqueous solution
ترجمه فارسی عنوان
جذب مؤثر از کروم شش ظرفیتی با استفاده از مواد پلی اتیلن اکسید هیدروکسید از محلول های آبی
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کلمات کلیدی
آلومینیوم، لانتانیم، کیتوزان، فروندلیچ، مرتبه شبه دوم، قابل استفاده مجدد،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
The mixed oxyhydroxide (MOH) and chitosan assisted mixed oxyhydroxide (CSMOH) adsorbents were synthesized via eco-friendly one pot co-precipitation method and their efficacy was tested towards the removal of hexavalent chromium from synthetic aqueous solution. Aluminium-lanthanum mixed oxyhydroxide (ALMOH) and chitosan/aluminium-lanthanum mixed oxyhydroxide (CSALMOH) were characterized using fourier transfer infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) with mapping, X-ray diffraction analysis, themogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The maximum adsorption capacity of Cr(VI) onto the sorbents was found to be higher at pHÂ 4-5 with the dosage of 2Â g/L at 200Â mg/L dichromate solution. The sorption capacities of ALMOH and CSALMOH were 49.80 and 78.90Â mg/g, respectively. Various isotherm models analysis viz., Langmuir, Freundlich and Dubinin-Radushkevich models were employed to correlate the experimental data. Thermodynamic studies were carried out to understand the nature of the sorption and feasibility of the reaction. The regeneration studies were also carried out up to 5Â cycles and to examine the potential of the CSALMOH was examined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 117, August 2017, Pages 16-24
Journal: Reactive and Functional Polymers - Volume 117, August 2017, Pages 16-24
نویسندگان
Jayaram Preethi, Subbaiah Muthu Prabhu, Sankaran Meenakshi,