Ultrasound-assisted removal of Acid Red 17 using nanosized Fe3O4-loaded coffee waste hydrochar

Alireza Khataee; Berkant Kayan; Dimitrios Kalderis; Atefeh Karimi; Sema Akay; Michalis Konsolakis

doi:10.1016/j.ultsonch.2016.09.004

Ultrasound-assisted removal of Acid Red 17 using nanosized Fe₃O₄-loaded coffee waste hydrochar

Ultrason Sonochem. 2017 Mar;35(Pt A):72-80. doi: 10.1016/j.ultsonch.2016.09.004. Epub 2016 Sep 13.

Authors

Alireza Khataee¹, Berkant Kayan², Dimitrios Kalderis³, Atefeh Karimi⁴, Sema Akay², Michalis Konsolakis⁵

Affiliations

¹ Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Materials Science and Nanotechnology, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey. Electronic address: a_khataee@tabrizu.ac.ir.
² Department of Chemistry, Art and Science Faculty, Aksaray University, 68100 Aksaray, Turkey.
³ Department of Environmental and Natural Resources Engineering, School of Applied Sciences, Technological and Educational Institute of Crete, 73100 Chania, Crete, Greece.
⁴ Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran.
⁵ Department of Production Engineering and Management, Technical University of Crete, 73100 Chania, Crete, Greece.

PMID: 27637143
DOI: 10.1016/j.ultsonch.2016.09.004

Abstract

The Fe₃O₄-loaded coffee waste hydrochar (Fe₃O₄-CHC) was synthesized using a simple precipitation method. The as-prepared adsorbent was characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Fourier transform infrared spectroscopy (FT-IR). The EDX analysis indicated the presence of Fe in the structure of Fe₃O₄-CHC. The specific surface area of hydrochar increased from 17.2 to 34.7m²/g after loading of Fe₃O₄ nanoparticles onto it. The prepared Fe₃O₄-CHC was used for removal of Acid Red 17 (AR17) through ultrasound-assisted process. The decolorization efficiency decreased from 100 to 74% with the increase in initial dye concentration and from 100 to 91 and 85% in the presence of NaCl and Na₂SO₄, respectively. The synthesized Fe₃O₄-CHC exhibited good stability in the repeated adsorption-desorption cycles. The high correlation coefficient (R²=0.997) obtained from Langmuir model indicated that physical and monolayer adsorption of dye molecules occurred on the Fe₃O₄-CHC surface. Furthermore, the by-products generated through the degradation of AR17 was identified by gas chromatography-mass spectrometry analysis.

Keywords: Dye removal; Fe(3)O(4) nanoparticles; Hydrochar; Magnetite; Sonolysis; Ultrasound.

MeSH terms

Adsorption
Azo Compounds / chemistry
Azo Compounds / isolation & purification*
Coffee / chemistry*
Ferrosoferric Oxide / chemistry*
Nanoparticles / chemistry*
Potassium Compounds / chemistry
Sodium Chloride / chemistry
Sulfates / chemistry
Ultrasonic Waves*
Waste Products / analysis*
Water Pollutants, Chemical / chemistry
Water Pollutants, Chemical / isolation & purification*
Water Purification / methods*

Substances

Azo Compounds
Coffee
Potassium Compounds
Sulfates
Waste Products
Water Pollutants, Chemical
sodium sulfate
Sodium Chloride
potassium persulfate
Ferrosoferric Oxide