ORIGINAL RESEARCH
Evaluating Forest Waste on Adsorption
of Cd(II) from Aqueous Solution: Equilibrium
and Thermodynamic Studies
| 1 | Bartin University, Faculty of Engineering, Department of Environmental Engineering,
Kutlubey Campus, Bartin, Turkey |
| 2 | Bartin University, Faculty of Forestry, Department of Forest Engineering,
Agdaci Campus, Bartin, Turkey |
CORRESPONDING AUTHOR
Betül Tuba Gemici
Bartın Üniversity Department of Environmental Engineering, 74100, Bartin, Turkey, Bartın University, Department of Environmental Engineering, 74100 Bartin, Turkey
Bartın Üniversity Department of Environmental Engineering, 74100, Bartin, Turkey, Bartın University, Department of Environmental Engineering, 74100 Bartin, Turkey
Submission date: 2018-07-13
Final revision date: 2018-09-18
Acceptance date: 2018-10-07
Online publication date: 2019-05-07
Publication date: 2019-07-08
Pol. J. Environ. Stud. 2019;28(5):3829–3836
KEYWORDS
TOPICS
ABSTRACT
The aim of this work was to investigate the adsorption potential of Uludag fir (Abies nordmanniana
subsp. bornmülleriana Mattf.) on cadmium removal using batch experiments. The effect of parameters
such as initial metal concentration, initial pH, biosorbent dosage, stirring speed, contact time
and temperature was examined. The Langmuir and Freundlich models were applied to describe
the equilibrium isotherms, and the biosorption process followed the Langmuir adsorption isotherms
model with high coefficients of correlation at different temperatures. The kinetics of the sorption
were analysed using the pseudo first-order and pseudo second-order kinetic models. The pseudo
second-order kinetic model fit well in correlation with the experimental results. Moreover,
the evaluated thermodynamic parameters (ΔG0, ΔH0, ΔS0) showed that the sorption process was feasible,
spontaneous and endothermic in nature. This study showed that Uludag fir (Abies nordmanniana subsp.
bornmülleriana Mattf.) can be used as an effective and ecologically friendly biosorbent for removal
of Cd(II) from aqueous solutions.
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