Simultaneous Adsorption of Malachite Green and Methylene Blue Dyes in a Fixed-Bed Column Using Poly(Acrylonitrile-Co-Acrylic Acid) Modified with Thiourea.

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Abel Adekanmi AdeyiNor Halaliza Alias

Abstract

Proper remediation of aquatic environments contaminated by toxic organic dyes has become a research focus globally for environmental and chemical engineers. This study evaluates the adsorption potential of a polymer-based adsorbent, thiourea-modified poly(acrylonitrile-co-acrylic acid) (T-PAA) adsorbent, for the simultaneous uptake of malachite green (MG) and methylene blue (MB) dye ions from binary system in a continuous flow adsorption column. The influence of inlet dye concentrations, pH, flow rate, and adsorbent bed depth on adsorption process were investigated, and the breakthrough curves obtained experimentally. Results revealed that the sorption capacity of the T-PAA for MG and MB increase at high pH, concentration and bed-depth. Thomas, Bohart-Adams, and Yoon-Nelson models constants were calculated to describe MG and MB adsorption. It was found that the three dynamic models perfectly simulate the adsorption rate and behavior of cationic dyes entrapment. Finally, T-PAA adsorbent demonstrated good cyclic stability. It can be regenerated seven times (or cycles) with no significant loss in adsorption potential. Overall, the excellent sorption capacity and multiple usage make T-PAA polymer an attractive adsorbent materials f...Continue Reading

References

Jun 24, 2008·Journal of Hazardous Materials·S S BaralG Roy Chaudhury
May 15, 2010·Journal of Hazardous Materials·Lin WangPengcheng Li
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Apr 22, 2018·The Science of the Total Environment·Hepsiba Niruba CatherineYang-Hsin Shih
Jun 10, 2018·Journal of Environmental Management·Ayoub Abdullah AlqadamiTansir Ahamad
Jul 30, 2018·Journal of Environmental Management·Ahmer Ali SiyalKhairun Azizi Azizli
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