Laboratory of Water-Energy-Environment (LR3E), code: AD-10-02, National School of Engineers of Sfax, University of Sfax, BP W, 3038, Sfax, Tunisia,
Environ Monit Assess. 2014 Jun;186(6):3875-90. doi: 10.1007/s10661-014-3664-2. Epub 2014 Feb 12.
In this work, two technologies are studied for the removal of phenol from aqueous solution: dynamic adsorption onto activated carbon and photocatalysis. Almond shell activated carbon (ASAC) was used as adsorbent and catalytic support in the phenol degradation process. The prepared catalyst by deposition of anatase TiO2 on the surface of activated carbon was characterized by scanning electron microscopy, sorption of nitrogen, X-ray diffraction, Fourier transform infrared (FT-IR) spectroscopy, and pHZPC point of zero charge. In the continuous adsorption experiments, the effects of flow rate, bed height, and solution temperature on the breakthrough curves have been studied. The breakthrough curves were favorably described by the Yoon-Nelson model. The photocatalytic degradation of phenol has been investigated at room temperature using TiO2-coated activated carbon as photocatalyst (TiO2/ASAC). The degradation reaction was optimized with respect to the phenol concentration and catalyst amount. The kinetics of disappearance of the organic pollutant followed an apparent first-order rate. The findings demonstrated the applicability of ASAC for the adsorptive and catalytic treatment of phenol.
在这项工作中，研究了两种从水溶液中去除苯酚的技术：活性炭的动态吸附和光催化。杏仁壳活性炭（ASAC）被用作吸附剂和催化载体，用于苯酚降解过程。通过在活性炭表面沉积锐钛矿 TiO2 制备的催化剂通过扫描电子显微镜、氮气吸附、X 射线衍射、傅里叶变换红外（FT-IR）光谱和 pHZPC 零电荷点进行了表征。在连续吸附实验中，研究了流速、床层高度和溶液温度对穿透曲线的影响。穿透曲线可以很好地用 Yoon-Nelson 模型描述。使用 TiO2 涂覆的活性炭作为光催化剂（TiO2/ASAC）在室温下研究了苯酚的光催化降解。优化了苯酚浓度和催化剂用量对降解反应的影响。有机污染物的消失动力学遵循表观一级速率。研究结果表明 ASAC 适用于苯酚的吸附和催化处理。
