Modelling on the Removal of Dye from Industrial Wastewater Using Surface Improved Enteromorpha intestinalis

Environmental friendly activated carbon with microporous structures have been synthesized by surface modification procedure using concentrated H2SO4. Various factors affecting the adsorption properties of methylene blue (MB) dye onto algaeraw Enteromorpha intestinalis (REI) and sulphuric acid modified E. intestinalis (SMEI)have been discussed, such as time, pH, biosorbent dose, MB dye concentration, and temperature. FTIR spectroscopy, SEM, and TGA analysis investigated the newly synthesized biosorbent. The relationship between the structure and adsorption properties of E. intestinalis had been discussed based on the experimental and theoretical data. Langmuir monolayer adsorption capacity of the adsorbentREI and SMEIwas calculated as 76.28 and 95.27mg/g, respectively. The batch data followed Freundlich isotherm model amongst four isotherms and pseudo-second-order rate equation. The results exhibit that adsorption of MB dye onto REI and SMEI was multilayer adsorption. Thermodynamic parameters revealed spontaneity of adsorption and the nature was chemisorption. Inferable from attributes of minimal effort, high-effectiveness, and vitality sparing, E. intestinalis can be utilized as a productive adsorbent for the removal of dyes from industrial wastewater.Article HighlightsA novel modified algae materialE. intestinaliswas prepared for the adsorption of MB dye.The optimum adsorption conditions of E. intestinalis towards MB dye are investigated.Adsorption behaviour follows Freundlich isotherm and pseudo-second order kinetic model.Thermodynamic study demonstrates that the present study is spontaneous, exothermic, and physical.