Cassava root husks powder as green adsorbent for the removal of Cu(II) from natural river water - Jorgetto, A. O.; Silva, R. I. V.; Saeki, M. J.; Barbosa, R. C.; Martines, M. A. U.; Jorge, S. M. A.; Silva, A. C. P.; Schneider, José Fabian; Castro, G. R. (Applied Surface Science, 2014)