Fast Removal of Pb2+ from Aqueous Solution by Water Insoluble Konjac Glucomannan

Xue Gang Luo; Feng Liu; Xiao Yan Lin

doi:10.4028/www.scientific.net/MSF.610-613.65

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HomeMaterials Science ForumMaterials Science Forum Vols. 610-613Fast Removal of Pb2+ from Aqueous Solution by...

Fast Removal of Pb²⁺ from Aqueous Solution by Water Insoluble Konjac Glucomannan

Abstract:

Konjac glucomannan (KGM) was converted into water insoluble konjac glucomannan (WIKGM) by treating with NaOH through completely deacetylated reaction. Adsorption study was carried out for the adsorption of Pb2+ from aqueous solution using water insoluble konjac glucomannan. The influences of pH, contact time, temperature and initial Pb2+ concentration on the absorbent were studied. Results of kinetic data showed that the Pb2+ adsorption rate was fast and good correlation coefficients were obtained for the pseudo second-order kinetic model. The equilibrium process was described well by the Langmuir isotherm model with maximum adsorption capacity of 9.18 mg/g on WIKGM at 25°C.