Removal of nitrate from aqueous solutions by activated carbon prepared from sugar beet bagasse.

In this study, activated carbons were prepared from sugar beet bagasse by chemical activation and the prepared activated carbons were used to remove nitrate from aqueous solutions. In chemical activation, ZnCl(2) was used as chemical agent. The effects of impregnation ratio and activation temperature were investigated. The produced activated carbons were characterized by measuring their porosities and pore size distributions. The microstructure of the activated carbons was examined by scanning electron microscopy (SEM). The maximum specific surface area of the activated carbon was about 1826m(2)/g at 700 degrees C and at an impregnation ratio of 3:1. The resulting activated carbon was used for removal of nitrate from aqueous solution. The effects of pH, temperature and contact time were investigated. Isotherm studies were carried out and the data were analyzed by Langmuir, Freundlich and Temkin equations. Three simplified kinetic models were tested to investigate the adsorption mechanism.

[1]  Qingrong Qian,et al.  Preparation of activated carbons from cattle-manure compost by zinc chloride activation. , 2007, Bioresource technology.

[2]  Wan Mohd Ashri Wan Daud,et al.  Comparison on pore development of activated carbon produced from palm shell and coconut shell. , 2004, Bioresource technology.

[3]  H. Demiral,et al.  Pore structure of activated carbon prepared from hazelnut bagasse by chemical activation , 2008 .

[4]  K. Bhattacharyya,et al.  Kinetics and thermodynamics of Methylene Blue adsorption on Neem (Azadirachta indica) leaf powder , 2005 .

[5]  Y. Onal,et al.  Textural development of sugar beet bagasse activated with ZnCl2. , 2007, Journal of hazardous materials.

[6]  A. Das,et al.  Treatment of colored effluent of the textile industry in Bangladesh using zinc chloride treated indigenous activated carbons. , 2006, Analytica chimica acta.

[7]  A. Zabaniotou,et al.  Production and characterization of activated carbons from olive-seed waste residue , 2005 .

[8]  Zhonghua Hu,et al.  Novel activation process for preparing highly microporous and mesoporous activated carbons , 2001 .

[9]  Tsai,et al.  Effects of Burn-off and Activation Temperature on Preparation of Activated Carbon from Corn Cob Agrowaste by CO(2) and Steam. , 2000, Journal of colloid and interface science.

[10]  Niyaz Mohammad Mahmoodi,et al.  Evaluation of the adsorption kinetics and equilibrium for the potential removal of acid dyes using a biosorbent , 2008, Chemical Engineering Journal.

[11]  B. Gao,et al.  Adsorption kinetics of nitrate from aqueous solutions onto modified wheat residue , 2007 .

[12]  C. A. Başar.  Applicability of the various adsorption models of three dyes adsorption onto activated carbon prepared waste apricot. , 2006, Journal of hazardous materials.

[13]  D. Azevedo,et al.  Microporous activated carbon prepared from coconut shells using chemical activation with zinc chloride , 2007 .

[14]  S. Woo,et al.  The removal of nitrate from aqueous solutions by chitosan hydrogel beads. , 2009, Journal of hazardous materials.

[15]  S. Ismadji,et al.  High surface area activated carbon prepared from cassava peel by chemical activation. , 2006, Bioresource technology.

[16]  Y. Bulut,et al.  A kinetics and thermodynamics study of methylene blue adsorption on wheat shells , 2006 .

[17]  Aimin Li,et al.  Preparation and characterization of highly mesoporous spherical activated carbons from divinylbenzene-derived polymer by ZnCl2 activation , 2007 .

[18]  Neşe Oztürk,et al.  Nitrate removal from aqueous solution by adsorption onto various materials. , 2004, Journal of hazardous materials.

[19]  Haluk Aydın,et al.  Adsorption of acid dyes in aqueous solutions by shells of bittim (Pistacia khinjuk Stocks) , 2006 .

[20]  C. Namasivayam,et al.  Experimental and kinetic studies on methylene blue adsorption by coir pith carbon. , 2007, Bioresource technology.

[21]  I. Tan,et al.  Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: equilibrium, kinetic and thermodynamic studies. , 2008, Journal of hazardous materials.

[22]  M. Olivares-Marín,et al.  Preparation of activated carbons from cherry stones by activation with potassium hydroxide , 2006 .

[23]  Bilal Hameed,et al.  Adsorption studies of basic dye on activated carbon derived from agricultural waste: Hevea brasiliensis seed coat , 2008 .

[24]  N. Amin.  REMOVAL OF REACTIVE DYE FROM AQUEOUS SOLUTIONS BY ADSORPTION ONTO ACTIVATED CARBONS PREPARED FROM SUGARCANE BAGASSE PITH , 2008 .

[25]  B. Min,et al.  Removal of Nitrate from Water by Adsorption onto Zinc Chloride Treated Activated Carbon , 2008 .

[26]  A. Lua,et al.  Characteristics of activated carbon prepared from pistachio-nut shell by zinc chloride activation under nitrogen and vacuum conditions. , 2005, Journal of colloid and interface science.

[27]  Evan Diamadopoulos,et al.  Production of activated carbon from bagasse and rice husk by a single-stage chemical activation method at low retention times. , 2008, Bioresource technology.

[28]  Hongwei Wu,et al.  Unburned carbon as a low-cost adsorbent for treatment of methylene blue-containing wastewater. , 2005, Journal of colloid and interface science.

[29]  Aik Chong Lua,et al.  Textural and chemical properties of zinc chloride activated carbons prepared from pistachio-nut shells , 2006 .

[30]  H. Demiral,et al.  Adsorption of chromium(VI) from aqueous solution by activated carbon derived from olive bagasse and applicability of different adsorption models , 2008 .

[31]  Antonio Macías-García,et al.  Preparation of activated carbon from cherry stones by chemical activation with ZnCl2 , 2006 .

[32]  A. Youssef,et al.  Textural properties of activated carbons from apricot stones , 2005 .

[33]  J. Tay,et al.  Optimising the preparation of activated carbon from digested sewage sludge and coconut husk. , 2001, Chemosphere.

[34]  C. R. Mohanty,et al.  Removal of lead(II) from wastewater by activated carbon developed from Tamarind wood by zinc chloride activation , 2009 .