Experimental design approach for ultra-fast nickel removal by novel bio-nanocomposite material

Olcay K. Ince , Burcu Aydogdu , Hevidar Alp , Muharrem Ince

Abstract

In the present study, novel chitosan coated magnetic magnetite (Fe3O4) nanoparticles were successfully biosynthesized from mushroom, Agaricus campestris, extract. The obtained bio-nanocomposite material was used to investigate ultra-fast and highly efficient for removal of Ni2+ ions in a fixed-bed column. Chitosan was treated as polyelectrolyte complex with Fe3O4 nanoparticles and a Fungal Bio-Nanocomposite Material (FBNM) was derived. The FBNM was characterized by using X-Ray Diffractometer (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS), Fourier Transform Infrared spectra (FTIR) and Thermogravimetric Analysis (TGA) techniques and under varied experimental conditions. The influence of some important operating conditions including pH, flow rate and initial Ni2+ concentration on the uptake of Ni2+ solution was also optimized using a synthetic water sample. A Central Composite Design (CCD) combined with Response Surface Modeling (RSM) was carried out to maximize Ni2+ removal using FBNM for adsorption process. A regression model was derived using CCD to predict the responses and analysis of variance (ANOVA) and lack of fit test was used to check model adequacy. It was observed that the quadratic model, which was controlled and proposed, was originated from experimental design data. The FBNM maximum adsorption capacity was determined as 59.8 mg g−1. Finally, developed method was applied to soft drinks to determine Ni2+ levels. Reusability of FBNM was tested, and the adsorption and desorption capacities were not affected after eight cycles. The paper suggests that the FBNM is a promising recyclable nanoadsorbent for the removal of Ni2+ from various soft drinks.

Key Words

Agaricus campestris; Fe3O4 nanoparticles; bionano-composite material; nickel; fixed-bed column

Address

(1) Olcay K. Ince — Department of Gastronomy and Culinary Arts, Faculty of Fine Arts, Design and Architecture, Munzur University, 62000 Tunceli, Turkey
(2) Olcay K. Ince, Hevidar Alp, Muharrem Ince — Rare Earth Elements Application and Research Center, Munzur University, 62000 Tunceli, Turkey
(3) Burcu Aydogdu — Department of Mechanical Engineering, Faculty of Engineering, Munzur University, 62000 Tunceli, Turkey
(4) Hevidar Alp — Department of Food Process, Tunceli Vocational School, Munzur University, 62000 Tunceli, Turkey
(5) Muharrem Ince — Department of Chemistry and Chemical Processes, Tunceli Vocational School, Munzur University, 62000 Tunceli, Turkey

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