Study of cadmium, zinc and lead biosorption by orange wastes using the subsequent addition method.
The biosorption of several metals (Cd2+, Zn2+ and Pb2+) by orange wastes has been investigated in binary systems. Multicomponent sorption isotherms were obtained using an original procedure, similar to that proposed by Pagnanelli et al. [Pagnanelli, F., Petrangeli, M.P., Toro, L., Trifoni, M., Veglio, F., 2001a. Biosorption of metal ions on Arthrobacter sp.: biomass characterization and biosorption modelling. Environ. Sci. Technol. 34, 2773-2778] for monoelement systems, known as subsequent addition method (SAM). Experimental sorption data were analysed using an extended multicomponent Langmuir equation. The maximum sorption uptake was approximately 0.25mmol/g for the three binary systems studied. The reliability of the proposed procedure for obtaining the equilibrium data in binary systems was verified by means of a statistical F-test.
Pérez-Marín
A B
AB
Departamento de Ingeniería Química, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain.
Ballester
A
A
González
F
F
Blázquez
M L
ML
Muñoz
J A
JA
Sáez
J
J
Zapata
V Meseguer
VM
D000327:Adsorption; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000302:isolation & purification*; D002957:Citrus / Q000378:metabolism*; D004784:Environmental Monitoring / Q000379:methods*; D007854:Lead / Q000302:isolation & purification*; D008956:Models, Chemical; D013696:Temperature; D014866:Waste Products; D015032:Zinc / Q000302:isolation & purification*
D014866:Waste Products; D002104:Cadmium; D007854:Lead; D015032:Zinc