title: High-value zeolitic material from bagasse fly ash: utilization for dye elimination.
abstract: Bagasse fly ash (BFA), a sugar industry waste, was used to prepare zeolitic material (ZFA) by means of alkaline hydrothermal treatment. ZFA showed improved morphology as a result of this treatment. The adsorption of the reactive dyes turquoise blue (TB) and brilliant magenta (BM), on both BFA and ZFA, was investigated in a batch contact system. A series of batch experiments revealed that optimal dye removal occurs at a 200 mg/L to 300 mg/L solute concentration, 60 minutes of agitation time, 5 g/L to 10 g/L adsorbent dose, a pH level of 2 to 4, and a temperature of 298 K. ZFA showed enhanced adsorption capacity as compared to BFA. According to the Langmuir equation, the maximum adsorption capacity was 12.66 mg/g and 45.45 mg/g for turquoise blue and brilliant magenta dyes, respectively, on BFA; and 21.74 mg/g and 100.00 mg/g for turquoise blue and brilliant magenta dyes, respectively, on ZFA. Kinetic studies showed that the correlation coefficients best fit with the pseudo-second-order kinetic model, confirming that the adsorption rate was controlled by a hemisorptions process.
authors.affiliation: Department of Chemistry, Veer Narmad South Gujarat University, Surat -7, Gujarat, India. bhavna606@gmail.com
authors.forename: Bhavna A
authors.initials: BA
authors.lastname: Shah
authors.forename: Ajay V
authors.initials: AV
authors.lastname: Shah
authors.forename: Harendra D
authors.initials: HD
authors.lastname: Patel
authors.forename: Chirag B
authors.initials: CB
authors.lastname: Mistry
mesh_terms: D000327:Adsorption; D060729:Coal Ash; D004396:Coloring Agents / Q000302:isolation & purification*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D017641:Zeolites
chemical_list: D060729:Coal Ash; D004396:Coloring Agents; D017641:Zeolites