Fig. 1From: Experimental and computational studies on activated Bambara groundnut (Vigna subterranean) hulls for the adsorptive removal of herbicides from aqueous solutionFT-IR spectra of ACBGNS (a) before adsorption, (b) and (c) after the PE and PQ adsorption. The adsorbent (ACBGNS) was characterized using Cary 630, Agilent Technology model of Fourier Transform Infrared Spectrophotometer. The conducted FTIR experiment used a range of wave numbers (650–4000 cm−1) with 32 scans at 8 cm−1 resolutionBack to article page