Simultaneous ultrasound-assisted removal of sunset yellow and erythrosine by ZnS:Ni nanoparticles loaded on activated carbon: optimization by central composite design.
The present study focused on the simultaneous ultrasound-assisted removal of sunset yellow and erythrosine dyes from aqueous solutions using ZnS:Ni nanoparticles loaded on activated carbon (ZnS:Ni-NP-AC) as an adsorbent. ZnS:Ni nanoparticles were synthesized and characterized using different techniques such as FESEM, XRD and TEM. The effects of various parameters such as sonication time, pH, initial dye concentrations and adsorbent dose on the percentage of dye removal were investigated. Parameters were optimized by central composite design (CCD) combined with response surface methodology (RSM) and desirability function (DF). A good agreement between experimental and predicted values was observed. The ultrasound-assisted adsorbent (0.04 g) was capable of high percentage removal (98.7% and 99.6%) of sunset yellow and erythrosine in short time (3.8 min).
Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
M
M
Roosta
Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran. Electronic address: m_ghaedi@mail.yu.ac.ir.
M
M
Ghaedi
Department of Chemistry, University of Ilam, P.O. Box 65315-516, Ilam, Iran.
A
A
Daneshfar
Department of Chemistry, University of Ilam, P.O. Box 65315-516, Ilam, Iran.
S
S
Darafarin
Department of Chemistry, University of Ilam, P.O. Box 65315-516, Ilam, Iran.
R
R
Sahraei
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
M K
MK
Purkait
Activated carbon; Central composite design; Desirability function; Nanoparticles; Response surface methodology; Ultrasound-assisted dye removal