Laboratory scale experimental design of oil spills, salts and dyes adsorption tests on modified wheat straw

摘要

Waste lignocellulosic biomass can be considered as a residual agro-industrial by-product with more representative species straw, cob, and husk because of their abundance in most countries. Lignocellulosics can be used as natural adsorbents for dyes, heavy metal salts and hydrocarbons in wastewater, seawater, rivers and lakes. The modification of lignocellulosic waste biomass can provide relatively low-cost adsorbents with increased sorption capacity and biodegradability, appropriate for the removal of dyes, heavy metal salts and oil spills from aquatic media. This work deals with the laboratory scale experimental design and execution of tests on the surface of original and modified wheat straw adsorbent, using Brunauer-Emmett-Teller (BET) specific surface area analyzer, Micro-Raman spectroscopy, Fourier transform infrared (FT-IR) and X-ray diffraction analysis (XRD). For the evaluation of microporocity of the highly heterogeneous adsorption materials, appropriate non-destructive spectroscopic techniques were used, as BET using nitrogen and Scanning Electron Microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS).