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首页> 外文期刊>RSC Advances >Adsorption of naphthalene onto high-surface-area nanoparticle loaded activated carbon by high performance liquid chromatography: response surface methodology, isotherm and kinetic study
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Adsorption of naphthalene onto high-surface-area nanoparticle loaded activated carbon by high performance liquid chromatography: response surface methodology, isotherm and kinetic study

机译：高效液相色谱法，用高效液相色谱法吸附萘将萘将萘纳米粒子加载活性炭：响应面方法，等温和动力学研究

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摘要

Naphthalene removal from aqueous solution was investigated using zinc sulfide nanoparticle loaded activated carbon (ZnS-NPs-AC). The concentration of naphthalene was determined using high performance liquid chromatography (HPLC). The prepared ZnS-NPs-AC was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), scanning electron microscopy (SEM), particle size distribution (PSD), transmission electron microscopy (TEM) and BET surface area. A four-factor central composite design (CCD) combined with response surface modeling (RSM) was employed for the maximization of naphthalene adsorption in the batch mode of operation. Four independent variables viz. pH (1.0–9.0), initial naphthalene concentration (5–45 mg L ~(?1) ), adsorbent dose (0.005–0.025 g) and contact time (5–25 min) were coded in a quadratic model to predict the response. The ZnS-NPs-AC was found to have a Langmuir monolayer adsorption capacity of 142.68 mg g ~(?1) , while the pseudo-second-order kinetic model in combination with the Elovich equation described the said process ( R ~(2) > 0.998) successfully.
机译：使用硫化锌纳米颗粒负载活性炭（ZnS-NPS-AC）研究了从水溶液中除去萘去除。使用高效液相色谱法（HPLC）测定萘的浓度。制备的ZnS-NPS-AC的特征在于X射线衍射（XRD），傅里叶变换红外光谱（FT-IR），场发射扫描电子显微镜（Fe-SEM），扫描电子显微镜（SEM），粒度分布（ PSD），透射电子显微镜（TEM）和BET表面积。与响应表面建模（RSM）相结合的四因素中央复合设计（CCD）用于在批量操作模式中最大化萘吸附。四个独立变量viz。 pH（1.0-9.0），初始萘浓度（5-45mg L〜（α1）），吸附剂量（0.005-0.025g）和接触时间（5-25分钟）在二次模型中编码，以预测响应。发现ZnS-NPS-AC具有142.68mg G〜（α1）的朗米尔单层吸附容量，而伪二阶动力学模型与Elovich方程组合描述了所述过程（R〜（2） > 0.998）成功。

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