Volume 9, Issue 2, September 2014, Pages 317–325
Hayelom Dargo1, Nigus Gabbiye2, and Adhena Ayalew3
1 Department of Applied Chemistry, University of Gondar, Gondar, Ethiopia
2 Department of Chemical Engineering, Bahir Dar University, Bahir Dar, Ethiopia
3 Department of Chemistry, Jigjiga University, Jigjiga, Ethiopia
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Textile industry is one of those industries that consume large amounts of water during the manufacturing process and, also, discharge great amounts of effluents with synthetic dyes to the environment causing public concern. Azo dyes are applied in textile industries, are considered to be serious health-risk factors. Several physico-chemical and biological methods for dye removal from wastewater have been investigated in the last decades. But, these treatment techniques need posterior separation process which significantly affects the economic performance of the plant. On the other hand, adsorption is one of the efficient methods and needs low capital and operational costs. Thus, this study investigates the potential use of low cost activated carbon prepared from the rice husk for the removal of Methylene Blue wastes. The rice husk was collected form rice mill and washed repeatedly until the dirty was eliminated. Then, it was heated at 500 oC for 30 min and the activated carbon had been activated with H2SO4 in order to make the carbon porous. A batch experiments were carried out in order to investigate the effect of various parameters. Uv-visibile spectrometer was used for the analysis of final concentration of the effluent. Experimental results have shown that, the amount of dye adsorption increased with decreasing the initial concentration, adsorbent dosage, contact time and temperature. Over 99% removal efficiency were achieved for the given dosage. With respect pH, pH value of 8-10 was found to be the optimal value.
Author Keywords: Water Pollution, Rice husk carbon, Methylene Blue, Adsorption Isotherms, Sear's method.
Hayelom Dargo1, Nigus Gabbiye2, and Adhena Ayalew3
1 Department of Applied Chemistry, University of Gondar, Gondar, Ethiopia
2 Department of Chemical Engineering, Bahir Dar University, Bahir Dar, Ethiopia
3 Department of Chemistry, Jigjiga University, Jigjiga, Ethiopia
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Textile industry is one of those industries that consume large amounts of water during the manufacturing process and, also, discharge great amounts of effluents with synthetic dyes to the environment causing public concern. Azo dyes are applied in textile industries, are considered to be serious health-risk factors. Several physico-chemical and biological methods for dye removal from wastewater have been investigated in the last decades. But, these treatment techniques need posterior separation process which significantly affects the economic performance of the plant. On the other hand, adsorption is one of the efficient methods and needs low capital and operational costs. Thus, this study investigates the potential use of low cost activated carbon prepared from the rice husk for the removal of Methylene Blue wastes. The rice husk was collected form rice mill and washed repeatedly until the dirty was eliminated. Then, it was heated at 500 oC for 30 min and the activated carbon had been activated with H2SO4 in order to make the carbon porous. A batch experiments were carried out in order to investigate the effect of various parameters. Uv-visibile spectrometer was used for the analysis of final concentration of the effluent. Experimental results have shown that, the amount of dye adsorption increased with decreasing the initial concentration, adsorbent dosage, contact time and temperature. Over 99% removal efficiency were achieved for the given dosage. With respect pH, pH value of 8-10 was found to be the optimal value.
Author Keywords: Water Pollution, Rice husk carbon, Methylene Blue, Adsorption Isotherms, Sear's method.
How to Cite this Article
Hayelom Dargo, Nigus Gabbiye, and Adhena Ayalew, “Removal of Methylene Blue Dye from Textile Wastewater using Activated Carbon Prepared from Rice Husk,” International Journal of Innovation and Scientific Research, vol. 9, no. 2, pp. 317–325, September 2014.
