Institute for Color Science and Technology (ICST) Progress in Color, Colorants and Coatings 2008-2134 16 4 2023 10 01 Investigation of Equilibrium, Isotherm, and Mechanism for the Efficient Removal of 3-Nitroaniline Dye from Wastewater Using Mesoporous Material MCM-48 387 398 81926 10.30509/pccc.2023.167111.1205 EN A. E. Mahdi Department of Chemical Engineering, University of Technology-Iraq, P.O. Box: 35010, Baghdad, Iraq N. S. Ali Materials Engineering Department, College of Engineering, Mustansiriyah University, P.O. Box: 1000, Baghdad, Iraq K. R. Kalash Environment and Water Directorate, Ministry of Science and Technology, Baghdad, Iraq I.K. Salih Department of Chemical Engineering and Petroleum Industries, Al-Mustaqbal University College, P.O. Box: 51001, Babylon, Iraq M.A. Abdulrahman Department of Chemical Engineering, University of Technology-Iraq, P.O. Box: 35010, Baghdad, Iraq T. M. Albayati Department of Chemical Engineering, University of Technology-Iraq, P.O. Box: 35010, Baghdad, Iraq Journal Article 2023 03 06 In this work, the MCM-48 mesoporous material was prepared and characterized to apply it as an active adsorbent for the adsorption of 3-Nitroaniline (3-Nitrobenzenamine) from wastewater. The MCM-48 characterizations were specified by implementing various techniques such as; scanning electron microscopy (SEM), Energy dispersive X-Ray analysis (EDAX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area, pore size distribution (PSD), and Fourier transform infrared (FTIR). The batch adsorption results showed that the MCM-48 was very active for the 3-Nitroaniline adsorption from wastewater. The adsorption equilibrium results were analyzed by applying isotherms like Langmuir and Freundlich. The maximum experimental uptake of 3-Nitroaniline according to type I Langmuir adsorption was found to be 89 mg g-1 approximately. The Langmuir model is superior to the Freundlich model for the adsorption of 3-Nitroaniline onto the mesoporous material MCM-48. The results demonstrated that 3-Nitroaniline regression coefficients are so high (0.99), the pseudo 2nd order hypothesis for the adsorption mechanism process appears to be well-supported. The findings of adsorption isotherms and kinetics studies indicate the adsorption mechanism is a chemisorption and physical adsorption process. In a thermodynamic analysis, a spontaneous and exothermic adsorption has been observed.

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