Abstract
The proteins and polysaccharides are always remained in the effluent of biotreated process, which leads to further pollution for advanced treatment or aqueous environment. In this study, Fe3O4/polynailine composite (Fe3O4@PANI) was prepared by means of in situ surface polymerization, and was used as the adsorbent for removal of proteins and polysaccharides from biotreated wastewater. The removal rate of polysaccharide by PANI (69.43%) was higher than that by Fe3O4@PANI (61.33%), while the removal percentage of protein by Fe3O4@PANI (65.25%) was higher than that by original PANI (47.56%). The adsorption process was fitted well with the quasi-first-order kinetic and Langmuir isotherm models. Finally, it was determined that electrostatic attraction is the primary mechanism for the adsorption of proteins and polysaccharides by PANI-based materials.
Graphical abstract
The Fe3O4/polyaniline can significantly remove proteins and polysaccharides from bio-treated wastewater due to its positively charged surface.
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This work is supported by the Fundamental Research Funds for the Central Universities (2021ZY77). The authors also extend their appreciation to the Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia for funding this research work through the project number “x_2020_IF.”
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Li, H., Huang, W., Qiu, B. et al. Effective removal of proteins and polysaccharides from biotreated wastewater by polyaniline composites. Adv Compos Hybrid Mater 5, 1888–1898 (2022). https://doi.org/10.1007/s42114-022-00508-0
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DOI: https://doi.org/10.1007/s42114-022-00508-0