<i>Ipomoea carnea</i>: a novel biosorbent for the removal of methylene blue (MB) from aqueous dye solution: kinetic, equilibrium and statistical approach
Mahalakshmi Mathivanan, Sameeha Syed Abdul Rahman, Rathinakumar Vedachalam, Surya Pavan Kumar A., G. Sabareesh, Sugumaran Karuppiah
Abstract
(MB) in terms of availability and economy of the process.The physico-chemical properties of ICW characterized using Scanning Electron Microscopy, Fourier transform infrared spectroscopy and Thermo-gravimetric Analysis showed ICW as a promising biosorbent for MB removal.Presence of heterogeneous with rugged morphological structure, cavities, irregular shape and size of large pores provide the better biosorption capability for MB molecules using ICW without any pretreatment or chemical modification.Analysis of kinetic and isotherm models was performed to examine the better fitness of experimental data with model. Thermodynamic parameters indicating feasible and endothermic MB biosorption.Statistical design of experiments is used to optimize the condition and corresponding maximum MB removal using Derringer's desired function methodology.Untreated ICW is a potential reusable biosorbents, effectively employed in successive biosorption and desorption process for the removal of MB from aqueous solutions.