Facile Fabrication of Quaternized Sisal Fiber by Electron Beam Radiation and its Effective Adsorption for Indigo Carmine from Aqueous Solution

Abstract

The removal of Indigo carmine (IC) from the aquatic environment is necessary due to its high toxicity. In this study, methacryloxy ethyltrimethyl ammonium chloride (DMC) modified sisal fiber (SF-DMC) was prepared by a one-step process using radiation induced grafting polymerization. The adsorption performance of SF-DMC toward IC dye was investigated by batch adsorption experiments. The adsorption kinetic studies shows that adsorption equilibrium reached within 30 min, and it can be well described by pseudo-second-order model. The adsorption isotherms are well described by Langmuir model, and the theoretical maximum adsorption capacity are 709.22 to 892.86 mg/g at different temperature. The adsorption of IC onto SF-DMC is a spontaneous and exothermic reaction and low temperature is favorable for adsorption. Besides, SF-DMC has good selective adsorption for IC in the mixed anionic dyes and in high-salt solution. The dyes on SF-DMC can be desorbed by 2mol/L HCl solution. Therefore, the SF-DMC exhibits excellent adsorption performance, which is suitable for IC removal from high-salt wastewater.

Application of Electron Beam Irradiation for the Removal of Dye from Textile Effluents: A Review

“…With a selectivity coefficient of 72.55 at a 1:1 molar ratio of IC to MO, SF-DMC preferentially adsorbed Indigo Carmine (IC) over Methyl Orange (MO). 42 Radiation polymerization and synthesis are additive-free methods of producing polymerization and giving existing polymers new properties intended for specific applications. High-energy electrons are mostly used in this method to modify the structure of polymers, which can enhance their mechanical, thermal, chemical, and other properties.…”