Removal of Dyes from Wastewater by Adsorption Using Modified Boron Enrichment Waste: Thermodynamic Criteria

Year 2017, Volume: 1 Issue: 1, 12 - 18, 01.08.2017

Muhammed Öden , Sezen Küçükçongar

Abstract

In this study,
Methylene Blue (MB) and Malachite Green (MG) removal from synthetic wastewaters
using modified boron enrichment waste by adsorption process were aimed. Boron
enrichment waste was modified with acid and ultrasound together. The boron enrichment process waste
could be used as an effective adsorbent due to its constituents including
ulexite, calcite, dolomite, zeolite and some clays. About 84% MB and 80% MG removal were obtained by modified boron
enrichment waste (MBEW) at optimum equilibrium conditions (Contact time: 20-10
min., adsorbent dose: 625-375 mg/L, pH: 11-10, shaking speed: 200 rpm and
temperature: 25⁰C) respectively. Besides, the thermodynamic parameters, such as ΔG^◦, ΔH^◦ and ΔS^◦ were also calculated.
Thermodynamic
(negative ∆G values) study indicates that the adsorption of dye is feasible,
and spontaneous in nature. Thermodynamic study
demonstrates the spontaneous and endothermic nature of sorption process due to
negative values of free energy change and positive value of enthalpy change,
respectively. All the
studied results showed that the modified enrichment waste could be used as
effective adsorption material for the removal of methylene
blue and malachite
green from aqueous solutions.

Keywords

Dyes, Boron Ore, Boron Enrichment Waste, Adsorption, Colour Removal

References

• 1. Chiou, M.-S., P.-Y. Ho, and H.-Y. Li, Adsorption of anionic dyes in acid solutions using chemically cross-linked chitosan beads. Dyes and Pigments, 2004. 60(1): p. 69-84. 2. Aksu, Z., Application of biosorption for the removal of organic pollutants: a review. Process Biochemistry, 2005. 40(3): p. 997-1026. 3. Robinson, T., et al., Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative. Bioresource Technology, 2001. 77(3): p. 247-255. 4. Clarke, E. and R. Anliker, Organic dyes and pigments. In: Handbook of environmental chemistry, anthropogenic compounds,. New York: Springer-Verlag,, 1980. 3(part A. ): p. 181–215. 5. Burkinshaw, S.M. and G. Salihu, The role of auxiliaries in the immersion dyeing of textile fibres: Part 1 an overview. Dyes and Pigments, 2017. 6. Kushwaha, A.K., N. Gupta, and M.C. Chattopadhyaya, Removal of cationic methylene blue and malachite green dyes from aqueous solution by waste materials of Daucus carota. Journal of Saudi Chemical Society, 2014. 18(3): p. 200-207. 7. Khattri, S.D. and M.K. Singh, Adsorption of basic dyes from aqueous solution by natural absorbent. Indian J. Chem. Technol., 1999. 6(2): p. 112–116. 8. Khattri, S.D. and M.K. Singh, Removal of malachite green from dye wastewater using neem sawdust by adsorption. Journal of Hazardous Materials, 2009. 167(1): p. 1089-1094. 9. Oei, B.C., et al., Surfactant modified barley straw for removal of acid and reactive dyes from aqueous solution. Bioresource Technology, 2009. 100(18): p. 4292-4295. 10. Gupta, V.K., et al., De-coloration of hazardous dye from water system using chemically modified Ficus carica adsorbent. Journal of Molecular Liquids, 2012. 174: p. 86-94. 11. Khosravi, I. and M. Eftekhar, Na 0.5 Li 0.5 CoO 2 nanopowders: Facile synthesis, characterization and their application for the removal of methylene blue dye from aqueous solution. Advanced Powder Technology, 2014. 25(6): p. 1721-1727. 12. Bouaziz, F., et al., Adsorptive removal of malachite green from aqueous solutions by almond gum: Kinetic study and equilibrium isotherms. International Journal of Biological Macromolecules, 2017. 13. Ghaedi, M., et al., Isotherm and kinetics study of malachite green adsorption onto copper nanowires loaded on activated carbon: Artificial neural network modeling and genetic algorithm optimization. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2015. 142: p. 135-149. 14. Uma, S. Banerjee, and Y.C. Sharma, Equilibrium and kinetic studies for removal of malachite green from aqueous solution by a low cost activated carbon. Journal of Industrial and Engineering Chemistry, 2013. 19(4): p. 1099-1105. 15. El-Zahhar, A.A. and N.S. Awwad, Removal of malachite green dye from aqueous solutions using organically modified hydroxyapatite. Journal of Environmental Chemical Engineering, 2016. 4(1): p. 633-638. 16. Agarwal, S., et al., Kinetics and thermodynamics of Malachite Green dye removal from aqueous phase using iron nanoparticles loaded on ash. Journal of Molecular Liquids, 2016. 223(Supplement C): p. 1340-1347.