Synthesis of chitosan/alumina composite by sol gel method for adsorption of procion blue MX-R dye from wastewater songket industry

Abstract

Research about the synthesis of chitosan/alumina composite using the sol-gel method and its application to removal procion blue MX-R dye had been conducted. The synthesized chitosan/alumina composite was characterized using FTIR to determine functional group, SEM-EDS to find out the surface morphology and elements composition of chitosan/alumina composite. The pHPZC is used to determine the appropriate pH condition on the adsorption process of chitosan and chitosan/alumina composite on procion blue dye solution. The FTIR spectra of chitosan represent the functional groups O-H, N-H, C-H and C-O while the chitosan/alumina composite is the addition of functional group of Al-O. The morphology of chitosan/alumina composite analysis by SEM showed that is heterogenous and porous. The EDX analysis showed that the present Al element of 5.49 % in the composite which indicates that synthesis of composite has been successful. Chitosan and composite have different pH pzc where chitosan at pH 6.02 and composite at pH 7.26. The optimum condition adsorption of procion blue MX-R using chitosan obtained at an initial concentration of 180 mg/L and contact time of 60 minutes, while the chitosan/alumina composite obtained at an initial concentration of 160 mg/L and 50 minutes contact time. The isotherm model that is suitable for describing the adsorption process is Freundlich isotherm for both adsorbents. The composite has the effectiveness of adsorption on procion blue MX-R from wastewater songket industry greater than chitosan ie 85.696 and 60.829 %, respectively.

Use of Novel and Environmental Friendly Natural Polymer and Its Alumina Nano-composite Synthesized from <i>Rhynchophorus phoenicis</i> in Waste Water Treatment

“…Next, 12g of Al 2 O 3 was added to the solution and stirred for 240 minutes at 250 rpm and left for 2 hours. The precipitate was poured out, sieved, cleaned and dried in an oven for 5 hours at 55°C [7].…”

Application of impregnated biocarbon produced from soybean hulls in dye decolorization

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