Comparison removal malachite green and methylene blue from aqueous solutions by new adsorbent prepared from Rosa canina
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 3
Abstract
In this research, low cost activated carbon simply was prepared from a local , plenty Rosa canina tree (AC-RC) in sou´wester of Iran. The potential applicability of AC-RC as useful adsorbent for the removal of Malachite Green(MG) and Methylene Blue(MB) from aqueous solutions. The AC-RC with low cost and toxicity with nano size pore diameter as a good adsorbent for removal dyes MG and MB from aqueous media. The effects of different parameters of pH , contact time, agitation time, initial dye concentration and amount of adsorbent AC-RC on removal MG and MB were evaluated. Increase in pH up to 8 for AC-RC , increase the adsorption capacity and reach equilibrium within 40min of contact time for (MB) dye and 45min for(MG) dye. Experimental data was analyzed by four kinetic models including pseudo first ,second-order, Elovich and the intraparticle diffusion equations. The result shows that adsorption of MG and MB onto AC-RC at all conditions such as versatile adsorbent dosages combination of the pseudo second-order equation.experimental data study for isotherm models like Langmuir, Freundlich, Tempkin and Dubinin-Radushkevich and show results , removal MG and MB dyes by AC-RC conformed from Freundlich isotherm. The adsorption capacity of AC-RC from removal of MG and MB was found to be 30.3 and 27.02mg/g. these results show that adsorbent AC-RC as a low cost adsorbent and high strength for removal Dyes from aqueous media.
Authors and Affiliations
Maryam Tavakol, Parviz Aberoomand Azar, Mehrorang Ghaedi, Mohammad Saber Tehrani
Keywords
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