Abstract
Developing an efficient adsorption material is of great significance for application in wastewater contaminated with pesticides. The present study investigated a promising nanomaterial (PhaCNCs) prepared with nanocellulose by grafting polyvinylamine for adsorption chlorpyrifos (CP). Structures and characteristics of PhaCNCs were analyzed using scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET). Central composite design based on response surface methodology was used to optimize adsorption process of CP by PhaCNCs. The optimum chemometric showed that 0.57 g L−1 PhaCNCs adsorbed 36.81 mg L−1 CP to yield an efficiency of 92.72 %. The results indicated that the adsorption process was well-described by the pseudo-second-order model. Langmuir isotherm calculated the maximum adsorption capacity for CP of 98.116 mg g−1, implied that the adsorption capacity of PhaCNCs was significantly higher than other adsorbents. This study will contribute to the development of adsorption processes for CP removal from aqueous environments.
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