Adsorption of naphthalene onto high-surface-area nanoparticle loaded activated carbon by high performance liquid chromatography: response surface methodology, isotherm and kinetic study
作者： Mehrorang Ghaedi , Anahita Daneshyar , Arash Asfaram , Mihir Kumar Purkait
DOI: 10.1039/C6RA09500C
关键词: Materials science 、 Central composite design 、 BET theory 、 Langmuir 、 Adsorption 、 Activated carbon 、 Naphthalene 、 Fourier transform infrared spectroscopy 、 Scanning electron microscope 、 Analytical chemistry
摘要: Naphthalene removal from aqueous solution was investigated using zinc sulfide nanoparticle loaded activated carbon (ZnS-NPs-AC). The concentration of naphthalene determined high performance liquid chromatography (HPLC). prepared ZnS-NPs-AC characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), (SEM), particle size distribution (PSD), transmission (TEM) and BET surface area. A four-factor central composite design (CCD) combined with response modeling (RSM) employed for the maximization adsorption in batch mode operation. Four independent variables viz. pH (1.0–9.0), initial (5–45 mg L−1), adsorbent dose (0.005–0.025 g) contact time (5–25 min) were coded a quadratic model to predict response. found have Langmuir monolayer capacity 142.68 g−1, while pseudo-second-order kinetic combination Elovich equation described said process (R2 > 0.998) successfully.
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