@article{bieseki_bertell_treichel_penha_pergher_2013,  title={Acid treatments of montmorillonite-rich clay for Fe removal using a factorial design method},  volume={16},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392013005000114},  DOI={10.1590/S1516-14392013005000114},  number={5},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Bieseki, Lindiane and Bertell, Francine and Treichel, Helen and Penha, Fabio G. and Pergher, Sibele B. C.},  year={2013},  month={Sep},  pages={1122–1127} }