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سنتز سبز نانو ذرات اکسید روی از عصاره اسپند و نشاندن آن بر روی کربن فعال پودری تولید شده از اسپند به عنوان یک جاذب جدید جهت حذف کروم شش ظرفیتی از محلول های آبی

فضل زاده دویل, مهدی and خسروی, رسول and زارعی, احمد (1396) سنتز سبز نانو ذرات اکسید روی از عصاره اسپند و نشاندن آن بر روی کربن فعال پودری تولید شده از اسپند به عنوان یک جاذب جدید جهت حذف کروم شش ظرفیتی از محلول های آبی. Ecological Engineering ــ 103 (part A). pp. 180-190. شاپا 0925-8574

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Title

Green synthesis of zinc oxide nanoparticles using Peganum harmala seed extract, and loaded on Peganum harmala seed powdered activated carbon as new adsorbent for removal of Cr(VI) from aqueous solution

English Abstract

In the present work, powdered activated carbon was derived from Peganum harmala seed (PPAC) and then coated by green ZnO nanoparticles and finally applied for Cr(VI) removal. PPAC was activated using a new physicochemical method in the presence of ultraviolet waves. FESEM showed that PPAC has a high structural porosity. Based on TEM, the size of synthesized NPs was 40 nm. Moreover, EDAX confirmed the existence of NPs on PPAC. FTIR spectrum showed the polyphenolic groups available in Peganum harmala seed extract in the synthesis of NPs. BET analysis presented a specific surface area of 442 m2/g for PPAC which declined after GZnO coating. Experimental data showed that coating GZnO on PPAC enhance the sorption percentage of the adsorbent significantly. The optimum pH value was found to be 2. The overall adsorption efficiency increased with a rise in temperature. The thermodynamic data indicated that the adsorption process by the adsorbent was endothermic and spontaneous in nature. Furthermore, equilibrium data showed that Cr(VI) adsorption fitted well with pseudo second order kinetic model and the Langmuir isotherm model was found to describe the adsorption process better. The maximum adsorption capacity of GZnO/PPAC was found to be 74.67 mg/g.

Item Type:Article
زبان سند : انگلیسی
نویسنده مسئول :مهدی فضل زاده دویل
Additional Information:Impact Factor (2016) 2.914 Indexed in: ISI, Scopus, Elsevier BIOBASE, Cambridge Scientific Abstracts, Current Contents/Agriculture, Biology & Environmental Sciences, GEOBASE, Urban Studies Abstracts, Biological Abstracts, BIOSIS Previews
کلیدواژه ها (انگلیسی):Green synthesisAdsorptionCr(VI)GZnOPowdered activated carbonPeganum harmala
Subjects:WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
Divisions:Faculty of Health > Department of Environmental health
ID Code:9005
Deposited By: Engineerin Mahdi Fazlzadeh
Deposited On:04 May 1396 07:10
Last Modified:04 May 1396 07:10

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