Evaluation of Saccharum bengalense as a Non-Conventional Biomaterial for Biosorption of Mn (Ⅱ) Ions from Aqueous Solutions

摘要

In this study, Saccharum bengalense (SB) was used as biosorbent for the removal ofMn (Ⅱ) ions from aqueous solution. The influence of biosorbent dose, time, pH and temperaturewas investigated in the biosorption process. Studies showed that by increasing pH of the solution,metal removing efficiency of Saccharum bengalense from the aqueous environment was enhancedbut to a specific extent, pH 5.0, at time 50minutes and dose 0.1g/50mL. Langmuir, Freundlich,Harkin Jura and Halsey adsorption isotherm were used to studying adsorption efficiency ofSaccharum bengalense. Langmuir and Harkin Jura adsorption isotherms well explainedthe adsorption process as compared to other isotherms with correlation coefficient 0.943 and 0.968respectively. At 313K temperature, adsorption capacity (qe) of Saccharum bengalense for removalof Mn (Ⅱ) ions from aqueous solution was 21.72mg/g. Kinetic study showed that pseudo secondorder was best followed by the adsorption process with correlation coefficient 0.997.