Browsing by Subject "Sugarcane bagasse"
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Item ADSORPTIVE REMOVAL OF ALUMINIUM (III) USING CHEMICALLY MODIFIED SUGARCANE BAGASSE FROM AQUEOUS SOLUTION(Amrit Campus, 2023-08-14) NEPAL, DIWASHA major concern for both humans and aquatic life can result from the presence of several metal ions in an aquatic environment that exceeds the allowed limit. The most efficient way to remove minute levels of hazardous metals from wastewater is through adsorption. The primary goal of this thesis work is to chemically modify sugarcane bagasse in order to create a low-cost, highly effective adsorbent for the removal of Al (III) from an aqueous solution. Both xanthated and charred sugarcane bagasse have been prepared as adsorbents. Adsorbents are characterised using FTIR, EDS, and SEM. For analysis, batch experimental method was carried out. Utilizing both CSB and XSB, the effect of pH, Al (III) concentration and contact time have been investigated using both CSB and XSB adsorbents. For both adsorbents, a 150-minutes maximum duration and a pH of 4 are found to be ideal. The Langmuir isotherm model is best fitted for equilibrium sorption data, and maximum adsorption capacities of CSB and XSB are determined to be 50.9 mg/g and 81.0 mg/g, respectively. Studies on kinetic modelling showed that a pseudo second-order kinetic model best fit the experimental data. These findings show that XSB can be an alternative bio-adsorbent for the elimination of Al(III) from an aqueous solution.Item Adsorptive Removal of Cr(VI) and Al(III) From Aqueous Solution by Sugarcane Biomass(Faculty of Chemistry, 2012) Mishra, ParamatmaThe potential and effectiveness of activated carbon derived from carbonization of sugarcane bagasse (Saccarhum officianrum) for adsorptive removal of Cr(VI) and Al(III) was examined by adsorption technique. Activated carbon was prepared by subjecting the raw sugarcane bagasse to chemical modification using concentrated sulphuric acid in (1:2) (w/v) of ratio of adsorbent weight to volume of concentrated sulphuric acid (H2 SO4 ). Boehm method was used to estimate the oxygen containing functional groups. The acidic functional groups, specific surface area and adsorptive capacity all greatly increased with chemical modification. The batch removal of Cr(VI) and Al(III) from aqueous solution was investigated. The influence of pH, initial concentration of metal ion and contact time were also investigated. The maximum adsorption capacity of Cr(VI) was found to be 131.68 mg/g at optimum pH of 1 and the maximum adsorption capacity of Al(III) was found to be 125.89 mg/g at optimum pH of 6 at the laboratory temperature respectively. The equilibrium time for Cr(VI) and Al(III) were found to be 180 and 120 minutes respectively. Kinetics of adsorption was found to follow pseudo-second order model. Both Langmuir and Freundlich adsorption isotherm could be used to describe adsorption isotherm but the Langmuir isotherm was found to be in good agreement with experimental data.Item Adsorptive Removal of Fe (II) From Aqueous Solution by Functionalized Sugarcane Bagasse(Department of Chemistry, 2010) Acharya, MahendraIn the present study, adsorption of Fe(II) onto different biosorbents prepared from sugarcane bagasse, i.e, raw sugarcane bagasse, charred sugarcane bagasse and phosphoric acid modified charred sugarcane bagasse has been studied by batch equilibration method under different experimental conditions. Effects of pH, Fe(II) concentration, and contact time on the adsorption of divalent iron ion were investigated. The concentration of Fe(II) ion in the test solution was determined spectrophotometrically. Maximum adsorption was observed at pH 2.5 for all the adsorbents at the optimum contact time of 9 hour, 7 hour, and 4 hour respectively for RSB, CSB and PCSB. Maximum adsorption capacity (qmax) value for the RSB, CSB and PCSB was found to be 50.5, 111.4 and 175 mg/g respectively. Adsorption of the Fe(II) ion on all the adsorbents followed Langmuir isotherm more strictly than Freundlich isotherm. The results shows that studied adsorbents may be attractive low cost alternative for the treatment of wastewater in lower concentration of iron.