Investigation of Typha Latifolia (TL) as potential biosorbent for removal of the methyl orange anionic dye in the aqueous solution. Kinetic and DFT approaches

Abstract

Novel fibers plant of Typha Latifolia pure (TL) and activated with sulfuric acid (TLs) were investigated as potential biodegradable and ecofriendly adsorbent for the removal of the methyl orange (MO) as anionic dye in the aqueous solution using different experimental parameters such as particle size, adsorbent mass, pH, contact time, initial methyl orange concentration and temperature, respectively. Two studied biosorbents (TL and TLs) were characterized using different techniques such as Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray energy dispersion (EDS). The experimental results shown that the adsorption of methyl orange dye for the TL and TLs reaches a maximum of 72.61 and 93.23% (with pH =5 at room temperature), respectively. Then, the amount adsorbed of TL and TLs are 36 and 50.34 mg/g, respectively. The isothermal study was shown that the Langmuir model describes well the methyl orange adsorption through fibers plant. Further, DFT was investigated to understand the interactions between the most reactive sites in the fibers plant biosorbent and the MO anionic dye. The computational calculations again support our experimental data and fibers plant could be used as potential biosorbent for removal of the methyl orange dye in the aqueous solution.