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High‐value Zeolitic Material from Bagasse Fly Ash: Utilization for Dye Elimination
Author(s) -
Shah Bhavna A.,
Shah Ajay V.,
Patel Harendra D.,
Mistry Chirag B.
Publication year - 2013
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143013x13596524515744
Subject(s) - adsorption , chemistry , magenta , bagasse , nuclear chemistry , langmuir adsorption model , chromatography , zeolite , materials science , biochemistry , organic chemistry , microbiology and biotechnology , biology , inkwell , composite material , catalysis
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.