Cited by 266Adsorption and biosorption for pollutant removalCoagulation and Flocculation StudiesEnzyme-mediated dye degradation

Equilibrium, kinetic and thermodynamic studies of the biosorption of textile dye (Reactive Red 195) onto Pinus sylvestris L

Aksakal, Ozkan, Ucun, Handan·2010·Journal of Hazardous Materials

Abstract

This study investigated the biosorption of Reactive Red 195 (RR 195), an azo dye, from aqueous solution by using cone biomass of Pinus sylvestris Linneo. To this end, pH, initial dye concentration, biomass dosage and contact time were studied in a batch biosorption system. Maximum pH for efficient RR 195 biosorption was found to be 1.0 and the initial RR 195 concentration increased with decreasing percentage removal. Biosorption capacity increased from 6.69 mg/g at 20 degrees C to 7.38 mg/g at 50 degrees C for 200mg/L dye concentration. Kinetics of the interactions was tested by pseudo-first-order and pseudo-second-order kinetics, the Elovich equation and intraparticle diffusion mechanism. Pseudo-second-order kinetic model provided a better correlation for the experimental data studied in comparison to the pseudo-first-order kinetic model and intraparticle diffusion mechanism. Moreover, the Elovich equation also showed a good fit to the experimental data. Freundlich and Langmuir adsorption isotherms were used for the mathematical description of the biosorption equilibrium data. The activation energy of biosorption (Ea) was found to be 8.904 kJ/mol by using the Arrhenius equation. Using the thermodynamic equilibrium coefficients obtained at different temperatures, the study also evaluated the thermodynamic constants of biosorption (DeltaG(o), DeltaH(o) and DeltaS). The results indicate that cone biomass can be used as an effective and low-cost biosorbent to remove reactive dyes from aqueous solution.

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Crossref · 10.1016/j.jhazmat.2010.05.064

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Authors
Aksakal, O., & Ucun, H.
Venue
Journal of Hazardous Materials
Publisher
Elsevier BV
Published
2010-09
Volume
181
Issue
1-3
Pages
666-672
ISSN
0304-3894 (ISSN-L)
OpenAlex
W2001030080
Cited by
266
References
37
Citations by year
2026: 8 · 2025: 10 · 2024: 13 · 2023: 14 · 2022: 21 · 2021: 23 · 2020: 21 · 2019: 17 · 2018: 18 · 2017: 23 · 2016: 13 · 2015: 22 · 2014: 9 · 2013: 18 · 2012: 16
FWCI
17.50
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Hazardous Materials (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Enzyme-mediated dye degradation
Keywords
Reactive Red 195, azo dyes, biosorption, Pinus sylvestris, dye removal, adsorption kinetics, pseudo-second-order kinetics, Elovich model, intraparticle diffusion, adsorption isotherms, Langmuir isotherm, Freundlich isotherm, activation energy, adsorption thermodynamics, low-cost biosorbent, textile wastewater
MeSH terms
Adsorption, Azo Compounds, Biodegradation, Environmental, Coloring Agents, Hydrogen-Ion Concentration, Kinetics, Naphthalenesulfonates, Textiles, Thermodynamics, Pinus sylvestris

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