@article{foletto_colazzo_volzone_porto_2011,  title={Sunflower oil bleaching by adsorption onto acid-activated bentonite},  volume={28},  ISSN={0104-6632},  url={https://doi.org/10.1590/S0104-66322011000100018},  DOI={10.1590/S0104-66322011000100018},  number={1},  journal={Brazilian Journal of Chemical Engineering},  publisher={Brazilian Society of Chemical Engineering},  author={Foletto, E. L. and Colazzo, G. C. and Volzone, C. and Porto, L. M.},  year={2011},  month={Jan},  pages={169–174} }