versión On-line ISSN 0718-0764
ALVAREZ, S.G.; MALDONADO, M; GERTH, A y KUSCHK, P. Characterization of Tannery Effluents and Study of the Water Hyacinth in Chromium Recovery. Inf. tecnol. [online]. 2004, vol.15, n.3, pp. 75-80. ISSN 0718-0764. http://dx.doi.org/10.4067/S0718-07642004000300012.
Four types of effluent were sampled from a tannery having a treatment plant. These effluents were observed for four weeks, measuring different physicochemical parameters. The tannery effluents were evaluated in phytoremediation assays using water hyacinth (Eichomea crassipes), determining the efficiency of chromium removal under tannery water injection conditions of 4 L/day and 8 L/day. The composition of the effluents was variable and depended on the leather processing loads during each week. The tannery effluent compositions in the phytoremediation assays significantly affected the life of the water hyacinth. It is concluded that the high concentrations of the parameters measured made phytoremediation impossible for this type of effluent, making primary treatment necessary in order to decrease the load of compounds present
Palabras llave : tannery effluents; wastewater; water treatment; chromium removal; water hyacinth.