investigation of equilibrium, isotherm, and mechanism for the efficient removal of 3-nitroaniline dye from wastewater using mesoporous material mcm-48

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.