Journal of Materials Research and Technology Journal of Materials Research and Technology
J Mater Res Technol 2018;7:300-7 DOI: 10.1016/j.jmrt.2017.08.010
Short Communication
Biocomposite application for the phosphate ions removal in aqueous medium
Haq Nawaz Bhattia, Javeria Hayata, Munawar Iqbalb,, , Saima Noreena, Sadia Nawazc
a Environmental and Material Chemistry Laboratory, Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
b Department of Chemistry, The University of Lahore, Lahore, Pakistan
c Department of Microbiology and Immunology, Arabian Gulf University, Manama, Bahran
Received 16 March 2017, Accepted 23 August 2017
Abstract

Mango stone biocomposite efficiency for the removal of phosphate ions (PO43−) from aqueous solution was investigated as a function of pH (2–8), biocomposite dose (0.05–0.40g/100mL solution), contact time (5–120min), initial PO43− ions concentration (20–800mg/L) and temperature (33–61°C). Maximum PO43− ions removal was achieved at pH 2, biocomposite dose 0.3g, contact time 90min and initial PO43− ions concentration 200mg/L. At optimized conditions, up to 95mg/g PO43− adsorption was achieved. Biocomposite pre-treatment with surfactants (SDS, Tween-80, C-TAB, VIM and Surf excel) were also investigated and it was observed that surfactants pre-treatments decreased the adsorption capacity of the biocomposite. Thermodynamic study (ΔG0, ΔH0 and ΔS0) revealed that PO43− adsorption process onto biocomposite was spontaneous and endothermic in nature. Adsorption data fitted well to the Freundlich isotherm and pseudo-second-order kinetic model. Adsorbed PO43− was successfully desorbed using 1.0M NaOH solution. Results revealed that biocomposite adsorbed PO43−, which could possibly be used for the adsorption of PO43− efficiently from wastewater.

Keywords
Biocomposite, Phosphate ions, Modification, Modeling, Desorption
J Mater Res Technol 2018;7:300-7 DOI: 10.1016/j.jmrt.2017.08.010
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