COSTA, M. A. S. M.; http://lattes.cnpq.br/6707617438822678; COSTA, Maria Angélica do Socorro Miná.
Resumen:
The present work is directed to making the tanning bath of skins in an
ecological and adequate sustainable process in the chrome removal, as a
heavy metal. The efficiency of chromium removal was analyzed through the
electrochemical process; the chrome ion presented in the soil was originated
from the ultra absorption of the infiltration of the tanning bath residue from the
Tanning Industry. A Falling film cell operating under galvan static control,
consisting of a nickel cathode and a DSA® anode, was used in this process. In
this work, the best efficiency of the chrome ion removal was studied, for the
different current densities, flow rate alimentation and process time operation.
The best result obtained for the chrome removal efficiency, 34, 34%, was at a
current density of 2.0 A.dm"2, flow rate of 500 l.h"1 and operation time of 4 hours.