The Experts below are selected from a list of 13473 Experts worldwide ranked by ideXlab platform
Cafer Saka - One of the best experts on this subject based on the ideXlab platform.
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a novel thermal process for activated carbon production from the vetch biomass with air at low temperature by two stage procedure
Journal of Analytical and Applied Pyrolysis, 2013Co-Authors: Ayhan Abdullah Ceyhan, Cafer Saka, Omer şahin, Ali YalcinAbstract:Abstract The method differs from a known method for the pyrolysis processing of agriculture waste. In this article, a novel thermal process of producing activated carbon from the vetch at low temperature by air is discussed. This paper reports the preparation of activated carbon with two-stage pyrolysis with air from the vetch by zinc chloride activation. The experiments in this study vary the pre- and post-treatment procedures, the impregnation ratio of the activating agent, and the carbonization temperature. The pyrolysis was carried out at different low activation temperatures in the range of 30–80 and 240–400 °C. Adsorption capacity was demonstrated with BET and Iodine Number. The respective highest BET surface area and Iodine Number for the produced activated carbons was obtained as 1287 m 2 /g and 1004 mg/g. SEM evaluated the structural morphology of activated carbons. The surface chemical characteristics of activated carbons were determined by FTIR spectroscopic method. The use of low temperature chemical carbonization has the potential to further improve the economics of generating activated carbon.
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bet tg dtg ft ir sem Iodine Number analysis and preparation of activated carbon from acorn shell by chemical activation with zncl2
Journal of Analytical and Applied Pyrolysis, 2012Co-Authors: Cafer SakaAbstract:Abstract Activated carbons were produced from acorn shell by chemical activation with zinc chloride (ZnCl 2 ) at 600 °C in N 2 atmosphere and their characteristics were investigated. The effects of activation temperature, duration time, impregnation concentration of agent and impregnation time were examined. Adsorption capacity was demonstrated with BET and Iodine Number. The obtained activated carbons were characterized by measuring their porosities and pore size distributions. BET surface area of the best produced activated carbon was 1289 m 2 /g. The surface chemical characteristics of activated carbons were determined by FT-IR spectroscopic method. The microstructure of the produced activated carbons was examined by scanning electron microscopy (SEM). Thermal gravimetry (TG) and derivative thermal gravimetry (DTG) analysis of produced activated carbon was carried out.
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bet tg dtg ft ir sem Iodine Number analysis and preparation of activated carbon from acorn shell by chemical activation with zncl2
Journal of Analytical and Applied Pyrolysis, 2012Co-Authors: Cafer SakaAbstract:Abstract Activated carbons were produced from acorn shell by chemical activation with zinc chloride (ZnCl 2 ) at 600 °C in N 2 atmosphere and their characteristics were investigated. The effects of activation temperature, duration time, impregnation concentration of agent and impregnation time were examined. Adsorption capacity was demonstrated with BET and Iodine Number. The obtained activated carbons were characterized by measuring their porosities and pore size distributions. BET surface area of the best produced activated carbon was 1289 m 2 /g. The surface chemical characteristics of activated carbons were determined by FT-IR spectroscopic method. The microstructure of the produced activated carbons was examined by scanning electron microscopy (SEM). Thermal gravimetry (TG) and derivative thermal gravimetry (DTG) analysis of produced activated carbon was carried out.
Le Yang - One of the best experts on this subject based on the ideXlab platform.
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preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation application in methylene blue adsorption from aqueous solution
Journal of Hazardous Materials, 2009Co-Authors: Hui Deng, Le YangAbstract:Abstract The activated carbon prepared from cotton stalk with ZnCl 2 as activation was investigated under microwave radiation. Effects on the yield and adsorption capacities of activated carbon were evaluated then, such as, microwave power, microwave radiation time and the impregnation ratio of ZnCl 2 . It indicated that the optimum conditions were as follows: microwave power of 560 W, microwave radiation time of 9 min and the impregnation ratio of ZnCl 2 was 1.6 g/g. Iodine Number, amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 972.92 mg/g, 193.50 mg/g and 37.92%, respectively. Laboratory prepared activated carbons were characterized by pH ZPC , SEM, FT-IR, S BET and pore structural parameters. Then they were used as adsorbent for the removal of methylene blue from aqueous solutions under varying conditions of initial concentration, carbon dosage and pH. It indicated that Langmuir isotherm was fitter than Freundlich isotherm and Temkin isotherm.
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preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation application in methylene blue adsorption from aqueous solution
Journal of Hazardous Materials, 2009Co-Authors: Hui Deng, Le Yang, Guanghui Tao, Jiulei DaiAbstract:Abstract The activated carbon prepared from cotton stalk with ZnCl 2 as activation was investigated under microwave radiation. Effects on the yield and adsorption capacities of activated carbon were evaluated then, such as, microwave power, microwave radiation time and the impregnation ratio of ZnCl 2 . It indicated that the optimum conditions were as follows: microwave power of 560 W, microwave radiation time of 9 min and the impregnation ratio of ZnCl 2 was 1.6 g/g. Iodine Number, amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 972.92 mg/g, 193.50 mg/g and 37.92%, respectively. Laboratory prepared activated carbons were characterized by pH ZPC , SEM, FT-IR, S BET and pore structural parameters. Then they were used as adsorbent for the removal of methylene blue from aqueous solutions under varying conditions of initial concentration, carbon dosage and pH. It indicated that Langmuir isotherm was fitter than Freundlich isotherm and Temkin isotherm.
Hui Deng - One of the best experts on this subject based on the ideXlab platform.
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preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation application in methylene blue adsorption from aqueous solution
Journal of Hazardous Materials, 2009Co-Authors: Hui Deng, Le YangAbstract:Abstract The activated carbon prepared from cotton stalk with ZnCl 2 as activation was investigated under microwave radiation. Effects on the yield and adsorption capacities of activated carbon were evaluated then, such as, microwave power, microwave radiation time and the impregnation ratio of ZnCl 2 . It indicated that the optimum conditions were as follows: microwave power of 560 W, microwave radiation time of 9 min and the impregnation ratio of ZnCl 2 was 1.6 g/g. Iodine Number, amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 972.92 mg/g, 193.50 mg/g and 37.92%, respectively. Laboratory prepared activated carbons were characterized by pH ZPC , SEM, FT-IR, S BET and pore structural parameters. Then they were used as adsorbent for the removal of methylene blue from aqueous solutions under varying conditions of initial concentration, carbon dosage and pH. It indicated that Langmuir isotherm was fitter than Freundlich isotherm and Temkin isotherm.
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preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation application in methylene blue adsorption from aqueous solution
Journal of Hazardous Materials, 2009Co-Authors: Hui Deng, Le Yang, Guanghui Tao, Jiulei DaiAbstract:Abstract The activated carbon prepared from cotton stalk with ZnCl 2 as activation was investigated under microwave radiation. Effects on the yield and adsorption capacities of activated carbon were evaluated then, such as, microwave power, microwave radiation time and the impregnation ratio of ZnCl 2 . It indicated that the optimum conditions were as follows: microwave power of 560 W, microwave radiation time of 9 min and the impregnation ratio of ZnCl 2 was 1.6 g/g. Iodine Number, amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 972.92 mg/g, 193.50 mg/g and 37.92%, respectively. Laboratory prepared activated carbons were characterized by pH ZPC , SEM, FT-IR, S BET and pore structural parameters. Then they were used as adsorbent for the removal of methylene blue from aqueous solutions under varying conditions of initial concentration, carbon dosage and pH. It indicated that Langmuir isotherm was fitter than Freundlich isotherm and Temkin isotherm.
Jiulei Dai - One of the best experts on this subject based on the ideXlab platform.
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preparation and characterization of activated carbon from cotton stalk by microwave assisted chemical activation application in methylene blue adsorption from aqueous solution
Journal of Hazardous Materials, 2009Co-Authors: Hui Deng, Le Yang, Guanghui Tao, Jiulei DaiAbstract:Abstract The activated carbon prepared from cotton stalk with ZnCl 2 as activation was investigated under microwave radiation. Effects on the yield and adsorption capacities of activated carbon were evaluated then, such as, microwave power, microwave radiation time and the impregnation ratio of ZnCl 2 . It indicated that the optimum conditions were as follows: microwave power of 560 W, microwave radiation time of 9 min and the impregnation ratio of ZnCl 2 was 1.6 g/g. Iodine Number, amount of methylene blue adsorption and the yield of activated carbon prepared under optimum conditions were 972.92 mg/g, 193.50 mg/g and 37.92%, respectively. Laboratory prepared activated carbons were characterized by pH ZPC , SEM, FT-IR, S BET and pore structural parameters. Then they were used as adsorbent for the removal of methylene blue from aqueous solutions under varying conditions of initial concentration, carbon dosage and pH. It indicated that Langmuir isotherm was fitter than Freundlich isotherm and Temkin isotherm.
Zaidi Ab Ghani - One of the best experts on this subject based on the ideXlab platform.
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optimization of preparation conditions for activated carbon from banana pseudo stem using response surface methodology on removal of color and cod from landfill leachate
Waste Management, 2017Co-Authors: Zaidi Ab Ghani, Mohd Suffian Yusoff, Nastaein Qamaruz Zaman, Mohd Faiz Muaz Ahmad Zamri, Jeyashelly AndasAbstract:This study determined the optimum conditions for preparation and adsorptive treatment of landfill leachate from banana pseudo-stem based activated carbon. Response surface methodology (RSM) based on Box-Behnken was applied to optimize the combination effect of three important reaction variables, i.e. activation temperature (°C), activation time and impregnation ratio (IR). The reaction was performed via a single step activation with ZnCl2 in a closed activation system. A series of 17 individual experiments were conducted and the results showed that the RSM based on BBD is very applicable for adsorptive removal of pollutants from landfill leachate treatment. The optimum conditions obtained by Design of Experiments (DOE) was at 761°C activation temperature, 87min activation time and 4.5g/g impregnation ratio with product yield (27%), Iodine Number (1101mg/g), color removal (91.2%) and COD removal (83.0%).
