sAmong several qualities such as low cost and availability, cas-sava husks still present good adsorptive properties. The existenceof carboxyl, amine and other functional groups at material’s sur-face is the main responsible for its adsorption capacity. Afteradsorption data linearization, according to Langmuir equation, themaximum adsorption capacity was similar to other related mate-rials (0.14 mmol g−1). The low cost adsorbent, when applied incontinuous flow mode, presented and enrichment factor of 41.3and an exceptional regeneration capacity, which easily enable itssafe use through 40 adsorption/desorption cycles. Due to thesementioned advantages cassava husks may be useful in the deter-mination of Cu(II) ions at trace levels when expensive equipmentsare not available.