Use of agro-industrial residues of plantain (Musa paradisiaca) in the adsorption of Ni (II)

The presence of heavy metals in aqueous media represents a severe threat to ecosystems because they are non-biodegradable, toxic, and carcinogenic. In the present work, utilization agro-industrial residues from obtaining plantain starch for removing Ni (II) was studied, establishing effect temperature, adsorption dose, initial concentration. kinetics, equilibrium, thermodynamic parameters that determine process were studied. For this purpose, tests carried out batch system maintaining constant stirring (200 rpm), pH (2), solution volume (100 mL). remaining metal concentration determined by atomic at 237 nm. It found best conditions given 55 ºC, 0.6775 g, 368 mg/L maximum capacity 47.57 mg/g corresponding removal 87%. kinetic model fits experimental data pseudo-second-order model, isotherm describes is Langmuir Freundlich, so chemisorption multilayers. suggest favourable, not spontaneous, endothermic, irreversible under studied conditions. results show residual biomass good precursor absorbing an solution.