@misc{10481/59346,
year = {2019},
month = {11},
url = {http://hdl.handle.net/10481/59346},
abstract = {Olive cake obtained as a by-product from the olive oil industry has been evaluated as
biosorbent of heavy metals from aqueous solutions in batch and continuous systems (fixed-bed
columns). First, a complete study of effect of hydrothermal treatment with water on biosorption
capacity of resulting solid was performed. Results showed that the values of biosorption capacity
increased when the particle size of material decreased and the temperature of treatment increased.
Then, hydrolyzed olive cake was treated by common chemicals (hot water, nitric acid, and sodium
hydroxide) and the impact of chemical treatment was analyzed. The results were well reproduced by
Langmuir and Freundlich isotherm models, getting maximum experimental biosorption capacities
that changed between 42.34 mg/g obtained for the solid material modified by NaOH and 14.27 mg/g
obtained for the solid material modified by nitric acid. Finally, laboratory tests in fixed-bed
columns were performed with four different heavy metals and at three different inlet concentrations.
The biosorption capacity increased from 2.83 mg/g (Cr), 4.51 mg/g (Cu), 12.30 mg/g (Pb), and 4.10 mg/g
(Zn) to 3.08 mg/g (Cr), 5.17 mg/g (Cu), 13.21 mg/g (Pb), and 5.51 mg/g (Zn) when the concentration of
metal ions increased, from 50 mg/L to 200 mg/L, respectively. Also, the experimental data obtained
was successfully correlated with the Thomas, Yoon–Nelson, and dose–response models.},
organization = {All authors are grateful to the Spanish Ministry of Economy, Industry and Competitiveness for financial
support received (Project CTM2016-75977-R).},
publisher = {MDPI},
keywords = {Biosorption},
keywords = {Heavy metals},
keywords = {Hydrothermal treatment},
keywords = {Olive cake},
keywords = {Wastewater treatment},
title = {Recovering Metals from Aqueous Solutions by Biosorption onto Hydrolyzed Olive Cake},
doi = {10.3390/w11122519},
author = {Fernández González, Rafael and Martín Lara, María Ángeles and Blázquez García, Gabriel and Pérez Muñoz, Antonio and Calero De Hoces, Francisca Mónica},
}