Investigation of the adsorptive removal of methylene blue using modified nanocellulose

In this study, Ethylenediamine tetraacetic acid (EDTA) embedded nanocellulose (NCED) has been used to study the adsorptive removal of methylene blue (MB) from simulated wastewater. The morphological characterizations have been checked with FESEM, FETEM, AFM, and BET pore analysis, while the fingerprinting of the material has been analyzed with the help of FTIR, Raman spectroscopy, EDS, XRD and TGA. For the experimental designing involving four parameters that affect the removal efficiency of MB, the layout has been prepared with the help of Central Composite Design (CCD). For the correlation among the parameters and their subsequent impact on the removal percentage, response surface methodology (RSM) has been employed. Maximum removal percentage of MB using NCED was found out to be 91.14%. The adsorption process was found to be good fit with the Langmuir isotherm and Elovich kinetics model. From the thermodynamics study, the spontaneity and the endothermic nature of the process was confirmed. With the help of all the obtained data and the associated removal efficiency, NCED could play a role of cost-effective and eco-friendly alternative to the expensive methods of toxic dye removal from wastewater.

Automated summary

In this study, ethylenediamine tetraacetic acid embedded nanocellulose (NCED) was used for the adsorptive removal of methylene blue (MB) from simulated wastewater. The study involved morphological characterizations and fingerprinting analysis of the material, as well as experimental design and analysis of parameters using central composite design and response surface methodology. The results showed that NCED achieved a maximum removal percentage of 91.14% for MB, with the adsorption process fitting well with the Langmuir isotherm and Elovich kinetics model. Thermodynamics study confirmed the spontaneity and endothermic nature of the process. Therefore, NCED could serve as a cost-effective and eco-friendly alternative for the removal of toxic dyes from wastewater.