Simultaneous ultrasound-assisted ternary adsorption of dyes onto copper-doped zinc sulfide nanoparticles loaded on activated carbon: optimization by response surface methodology

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Arash AsfaramA A Bazrafshan

Abstract

The simultaneous and competitive ultrasound-assisted removal of Auramine-O (AO), Erythrosine (Er) and Methylene Blue (MB) from aqueous solutions were rapidly performed onto copper-doped zinc sulfide nanoparticles loaded on activated carbon (ZnS:Cu-NP-AC). ZnS:Cu nanoparticles were studied by FESEM, XRD and TEM. First, the effect of pH was optimized in a one-at-a-time procedure. Then the dependency of dyes removal percentage in their ternary solution on the level and magnitude of variables such as sonication time, initial dyes concentrations and adsorbent dosage was fully investigated and optimized by central composite design (CCD) under response surface methodology (RSM) as well as by regarding desirability function (DF) as a good and general criterion. The good agreement found between experimental and predicted values supports and confirms the suitability of the present model to predict adsorption state. The applied ultrasound strongly enhanced mass transfer process and subsequently performance. Hence, a small amount of the adsorbent (0.04 g) was capable to remove high percentage of dyes, i.e. 100%, 99.6% and 100% for MB, AO and Er, respectively, in very short time (2.5 min). The experimental equilibrium data fitting to Langmu...Continue Reading

References

Sep 23, 2006·Journal of Colloid and Interface Science·Vinod K GuptaJyoti Mittal
Jan 30, 2007·Journal of Hazardous Materials·Mustafa Tuzen, Mustafa Soylak
Nov 23, 2011·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Mehrorang GhaediAli Daneshfar
Jan 15, 2014·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·M GhaediA Daneshfar

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Citations

Sep 8, 2015·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Asif AliAmir Zada
Feb 14, 2020·Nanomaterials·Shahin Homaeigohar
Jun 3, 2018·Environmental Science and Pollution Research International·Asmat AliMaria Siddique
Nov 7, 2019·International Journal of Phytoremediation·R A MansourA A Zaatout
Aug 14, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Boutheina RzigBéchir Hamrouni

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