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Emerging contaminants removal by granular activated carbon obtained from residual Macauba biomass

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Abstract

The removal of emergent contaminants via adsorption on granular activated carbon, prepared from Macauba palm, has been studied, contributing to the recovery of the residual biomass, endocarp, obtained in the Macauba palm oil extraction process. The material was characterized by different techniques, such as Raman spectroscopy, thermal analysis, adsorption/desorption of N2, zeta potential, and scanning electron microscopy. The N2 adsorption studies showed that the material presents wide micropores and narrow mesopores, and has a surface area of 907.0 m2 g−1. Its maximum adsorption capacity towards the three main emerging contaminants (bisphenol A, ethinylestradiol, and amoxicillin) is much higher than that obtained with benchmark adsorbents (0.148, 0.104, and 0.072 mmol g−1, respectively). The influence of temperature and pH on the adsorption was also analyzed, allowing an improved description of the adsorption mechanism and showing very promising results.

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Acknowledgements

The authors would like to acknowledge CNPq, CAPES, FAPEMIG and INCT-Midas for financial support and also the Center of Microscopy at the Universidade Federal de Minas Gerais (http://www.microscopia.ufmg.br) for providing the equipment and technical support for experiments involving electron microscopy.

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Correspondence to Flávia C. C. Moura.

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Responsible editor: Guilherme L. Dotto

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Moura, F.C.C., Rios, R.D.F. & Galvão, B.R.L. Emerging contaminants removal by granular activated carbon obtained from residual Macauba biomass. Environ Sci Pollut Res 25, 26482–26492 (2018). https://doi.org/10.1007/s11356-018-2713-8

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  • DOI: https://doi.org/10.1007/s11356-018-2713-8

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