<p>The general structure of organophosphate pesticides.</p> Full article ">Figure 2
<p>Structure of malathion (carbon atoms are shown in grey, hydrogen in white, oxygen in red, sulfur in yellow, and phosphorus in orange).</p> Full article ">Figure 3
<p>Structure of chlorpyrifos (carbon atoms are shown in grey, hydrogen in white, oxygen in red, sulfur in yellow, phosphorus in orange, chlorine in green, and nitrogen in blue).</p> Full article ">Figure 4
<p>UV–VIS spectra (<b>top row</b>) and chromatograms (<b>bottom row</b>) of MLT (<b>left</b>) and CHP (<b>right</b>). Carbon atoms are shown in grey, hydrogen in white, oxygen in red, sulfur in yellow, phosphorus in orange, chlorine in green, and nitrogen in blue.</p> Full article ">Figure 5
<p>(<b>a</b>) EDX spectrum and elemental composition in at. % of KACGs; (<b>b</b>) SEM micrograph of KACGs (magnification 2000×).</p> Full article ">Figure 6
<p>FTIR spectrum of KACGs.</p> Full article ">Figure 7
<p>Graphical representations of kinetic models for MLT (<b>a</b>,<b>b</b>) and CHP (<b>c</b>,<b>d</b>) adsorption onto KACGs. Carbon atoms are shown in grey, hydrogen in white, oxygen in red, sulfur in yellow, phosphorus in orange, chlorine in green, and nitrogen in blue.</p> Full article ">Figure 8
<p>Graphical representations of isotherm models for MLT (<b>a</b>,<b>c</b>,<b>e</b>) and CHP (<b>b</b>,<b>d</b>,<b>f</b>) adsorption onto KACGs (1 mg mL<sup>−1</sup>) at 25 °C (<b>a</b>,<b>b</b>), 30 °C (<b>c</b>,<b>d</b>), and 35 °C (<b>e</b>,<b>f</b>).</p> Full article ">Figure 9
<p>Van’t Hoff plots for adsorption of MLT (<b>a</b>) and CHP (<b>b</b>) onto KACGs. Carbon atoms are shown in grey, hydrogen in white, oxygen in red, sulfur in yellow, phosphorus in orange, chlorine in green, and nitrogen in blue.</p> Full article ">Figure 10
<p>Inhibition of AChE activity before and after the adsorption of OPs onto KACGs.</p> Full article ">