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Int J Biol Macromol. 2015 Sep;80:588-95. doi: 10.1016/j.ijbiomac.2015.07.026. Epub 2015 Jul 15.

Optimization of a novel biocomposite synthesis (Ammi Visnaga extraction waste/alginate) for Cd(2+) biosorption.

Author information

1
Laboratory of Industrial Processes Engineering Sciences, Faculty of Mechanical and Engineering Processes, (USTHB), BP 32, 16111 Algiers, Algeria; Research Centre in Analytical Chemistry and Physics, (CRAPC), BP 248, RP 16004 Algiers, Algeria.
2
Laboratory of Industrial Processes Engineering Sciences, Faculty of Mechanical and Engineering Processes, (USTHB), BP 32, 16111 Algiers, Algeria.
3
Research Centre in Analytical Chemistry and Physics, (CRAPC), BP 248, RP 16004 Algiers, Algeria.
4
Laboratory of Industrial Processes Engineering Sciences, Faculty of Mechanical and Engineering Processes, (USTHB), BP 32, 16111 Algiers, Algeria; Laboratory of Storage and Valorization of Renewable Energies, Faculty of Chemistry, (USTHB), BP 32, 16111 Algiers, Algeria.
5
Laboratory of Storage and Valorization of Renewable Energies, Faculty of Chemistry, (USTHB), BP 32, 16111 Algiers, Algeria. Electronic address: solarchemistry@gmail.com.

Abstract

A novel environmentally friendly biocomposite namely calcium alginate immobilized Ammi Visnaga (Khella) extraction waste was prepared by electrostatic extrusion method. A full factorial design 2(3) was used to optimize the beads preparation conditions. The effect of sodium alginate concentration (X1), biomass concentration (X2) and cross-linker concentration (X3) on the Cd(2+) removal efficiency was examined in a batch system with a fixed biocomposite dose of 1g/L. Using the experimental results, a linear mathematical model representing the influence of different variables and their interactions was obtained. The optimized values of X1, X2 and X3 were found to be 4.35%, 2.5% and 1.99% respectively. The biocomposite beads were characterized by ATR spectroscopy, scanning electron microscopy for the surface morphology and optical microscopic for the particles size measurements.

KEYWORDS:

Alginate; Ammi Visnaga extraction waste; Biocomposite; Biosorption; Cadmium; Full factorial design

PMID:
26188304
DOI:
10.1016/j.ijbiomac.2015.07.026
[Indexed for MEDLINE]

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