Multivariate optimization of the decolorization process by surface modified biomaterial: Box–Behnken design and mechanism analysis

Abstract

A natural biosorbent obtained from Pyracantha coccinea was modified with an anionic surfactant to facilitate its dye removal ability. Modified biosorbent was successfully employed for the decolorization of Methyl Violet (MV)-contaminated solutions. A three-variable Box-Behnken design for response surface methodology was used to examine the function of independent operating variables. Optimum pH and biosorbent amount were found to be 6.0 and 0.055 g, respectively. The effects of temperature and ionic strength on the dye removal performance of biosorbent were also investigated. A biosorption equilibrium was attained within 30 min and experimental data fitted well to the pseudo-second-order model. The Langmuir isotherm model fitted adequately to the equilibrium data. The maximum monolayer biosorption capacity of the modified biosorbent was found to be 254.88 mg g(-1). Good biosorption yields were also recorded in continuous biosorption system. Ion exchange and complexation could be suggested as possible mechanisms for the biosorption. The developed modified biosorbent was regenerated up to 80.30 % by 0.005 M HCl. At real wastewater conditions, it has 86.23 ± 0.21 and 94.51 ± 1.09 % dye removal yields in batch and column systems, respectively. Modified biomaterial can be used as an effective biosorbent for the removal of MV dye from aqueous solution with high biosorption performance.

Pyracantha fortuneana (Maxim.) Li: A comprehensive review of its phytochemistry, pharmacological properties, and product development

“…The prepared biosorbent was effectively used for the decolorization of reactive Red 45 contaminated solutions after the optimization of biosorption conditions (Akar et al, 2013). Next, modification of the biosorbent obtained from P. fortuneana with anionic surfactants was successfully employed for decolorization of methyl violet (MV)-contaminated solutions (Akar et al, 2014).…”

Customizing Properties of β-Chitin in Squid Pen (Gladius) by Chemical Treatments

“…Examples of the top up approach include: spines of the echinoderms that were hydrothermally treated, converting calcium carbonate in calcium phosphate, preserving the spine microporous structure, and making them useful as bone graft substitutes [ 3 ], nanometric silk-fibroin nets, fabricated by electrospinning from regenerated Bombyx mori silk-fibroin that were made water-insoluble by the reaction with genipin that induced conformational changes favoring the presence of a beta-sheet together with beta-turn intermediates [ 4 ], natural biosorbent obtained from Pyracantha coccinea that was modified with an anionic surfactant to facilitate its dye removal ability, a modified biosorbent that was successfully employed for the decoloration of methyl violet contaminated solutions [ 5 ], periodic superconducting, porous self-supporting monoliths that were synthesized using cuttlebone as a morphological template; this produced a lightweight, structurally stable superconductor with a greatly improved critical current density [ 6 ]. …”

“…a modified biosorbent that was successfully employed for the decoloration of methyl violet contaminated solutions [ 5 ],…”

Response surface optimization of chemical coagulation for solid–liquid separation of dairy manure slurry through Box–Behnken design with desirability function

“…The following Eq. (1) was used to calculate the total number of experiments [ 22 , 23 ]. here, is the number of independent variables and is the number of central points.…”