Synthesis of lignin/ graphene oxide/polyurethane composite and itsapplication as an adsorbent for polynuclear aromatic hydrocarbon removal from wastewater

Document Type : Original Article

Authors

1 Agricultural Biochemistry Department, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo, Egypt

2 Analysis and Evaluation Department, Egyptian Petroleum Research Institute, 11727 Nasr City, Cairo, Egypt.

Abstract

Lignin/graphene-oxide/polyurethane composite was synthesized in order to evaluate its performance as an adsorbent for polynuclear aromatic hydrocarbons PAHs. The sequence of this process are lignin extraction and graphene-oxide preparation as a precursor for lignin/graphene-oxide/polyurethane composites synthesis.  Characterization of this composite was carried out using elemental analysis, FTIR, X-ray, gel permeation chromatography GPC, and transmission electron microscopy TEM.  An experimental design according to the Taguchi orthogonal array approach using Minitab software was carried out to enables the effect of factors on the response to be ascertained and identifies the optimal experimental conditions with the least variability. The efficiency of this composite towards polyaromatic removal was investigated using high performance liquid chromatography HPLC and compared to that obtained for the precursor materials. i.e., lignin and graphene oxide. 

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