Institute of Environmental Engineering, University of Pannonia, 10 Egyetem St, Veszprém, 8200, Hungary.
Institute of Environmental Engineering, University of Pannonia, 10 Egyetem St, Veszprém, 8200, Hungary.
J Environ Manage. 2019 Jun 1;239:333-341. doi: 10.1016/j.jenvman.2019.03.079. Epub 2019 Mar 25.
This work aims to investigate the potential of Jordanian raw zeolitic tuff (RZT) as oil adsorbent for oil-contaminated water. As hydrophobic properties are the primary determinants of effective oil adsorbents, the hydrophobicity of RZT was enhanced by dealumination process; since the degree of hydrophobicity of zeolites is directly dependent on their aluminum content. The microemulsion modification of the dealuminated zeolitic tuff (TZT) was also applied to increase its hydrophobicity. The raw and modified tuffs were characterized in terms of the surface area and porosity (BET), mineral composition (XRD), microstructure and morphology using scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). In this work, a mixture of water and kerosene was used to examine the hydrophobic/organophilic character of raw and modified zeolitic tuff. Water/dodecane and water/octane mixtures were used to study the kinetics of the adsorption over zeolitic tuff. The results revealed that the sorption capacity using kerosene as a mixed model (water-oil) was enhanced by three- and four-fold for TZT and micro-emulsified zeolitic (MeTZT) tuff respectively. The adsorption capacity of modified zeolitic was compared with that of activated carbon adsorbents.
本工作旨在研究约旦原沸石凝灰岩（RZT）作为含油污水吸附剂的潜力。由于疏水性是有效油吸附剂的主要决定因素，因此通过脱铝处理来增强 RZT 的疏水性；因为沸石的疏水性程度直接取决于其铝含量。还应用微乳液改性来增加脱铝沸石凝灰岩（TZT）的疏水性。用比表面积和孔隙度（BET）、矿物成分（XRD）、扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）来对原土和改性土进行微观结构和形貌的特征化。在这项工作中，使用水和煤油的混合物来检查原沸石和改性沸石的疏水性/亲油性。使用水/正十二烷和水/正辛烷混合物来研究沸石上的吸附动力学。结果表明，TZT 和微乳液化沸石（MeTZT）凝灰岩的吸附容量分别提高了三倍和四倍，使用煤油作为混合模型（油水）。改性沸石的吸附容量与活性炭吸附剂的吸附容量进行了比较。
