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Iranian Journal of Chemistry and Chemical Engineering، جلد ۳۶، شماره ۱، صفحات ۸۷-۹۶
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Adsorption of the Cationic Dye Ethyl Violet on Acid and Alkali-Treated Wild Carob Powder, A Low-Cost Adsorbent Derived from Forest Waste |
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| چکیده انگلیسی مقاله |
The effect of acid-alkaline treatment of lignocellulosic material (wild carob forest wastes) on Ethyl violet adsorption was investigated. It was found that surface chemistry plays an important role in Ethyl Violet (EV) adsorption. HCl treatment produces more active acidic surface groups such as carboxylic and lactone, resulting in an increase in the adsorption of EV dye. The adsorption efficiency was higher for treated lignocellulosic material with HCl (WCHCl) compared to that treated with KOH (WCKOH); maximum biosorption capacities were 170 and 130 mg/g for WCHCl and WCKOH at pH 6, respectively.It was also found that for both treated materials less than 150 min was needed to reach equilibrium.The adsorption of a basic dye (i.e. ethyl violet or basic violet 4) was carried out by varying some process parameters, such as the initial concentration and pH. The adsorption process can be well described by means of a pseudo-second-order reaction model and experimental data were accurately expressed by the Sips and Langmuir models for both WCHCl and WCKOH. |
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| کلیدواژه‌های انگلیسی مقاله |
Adsorption, Wild carob, Isotherm, Kinetics, modeling |
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| نویسندگان مقاله |
عبدالله bouguettoucha |
chemical engineering laboratory, university ferhat abbas, s amp;amp;eacute;tif, algeria
abdelbaki reffas |
laboratoire de matériaux inorganiques, faculté de sciences, université mohamed boudiaf - m’sila, algérie
derradji chebli |
laboratoire de génie des procédés chimiques, faculté de technologie, université ferhat abbas, sétif-1, 19000 sétif, algérie
abdeltif amrane |
ecole nationale supérieure de chimie de rennes, université de rennes 1, cnrs, umr 6226, avenue du général leclerc, cs 50837, 35708, rennes cedex 7, rennes, france
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| نشانی اینترنتی |
http://www.ijcce.ac.ir/article_25193_fcda7beaf91dbfedd216845aa3ffbc56.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/444/article-444-394141.pdf |
| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
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