Giraldo Liliana, Bernal Fernandez Valentina, Moreno-Piraján Juan Carlos
Departamento de Química, Universidad Nacional de Colombia, Bogotá, Colombia.
Departamento de Química, Universidad de los Andes, Bogotá, Colombia.
Data Brief. 2020 Feb 4;29:105240. doi: 10.1016/j.dib.2020.105240. eCollection 2020 Apr.
The presence of phenol in water bodies exists due to the discharge of wastewater from industrial, agricultural and domestic activities. Its presence in water is associated with a decrease in the quality of drinking water because its change the taste and odour [1]. The adsorption process is one of the most used treatments to remove the phenol of waters and the activated carbon is an appropriate adsorbent due to its high surface area, porosity and low cost. The studies about the adsorption process are addressed by different views of point such as equilibrium and thermodynamic data. In this work, the adsorption isotherms of phenol on five activated carbons with different physicochemical properties in aqueous solution are presented. In addition, the immersion enthalpies, the interaction enthalpies, the Gibbs energy and the entropy changes are included. The isotherms data are adjusted to the Freundlich and Sips models. The immersion enthalpy values are between -7.670 and -57.0 J g, the interaction enthalpies are 48.00 and -11.70 J g, the Gibbs energy change are between -5337 and -12322 J mol K and finally, the entropy change values are between 18.10 and 39.70 J K.
水体中苯酚的存在是由于工业、农业和生活活动排放的废水所致。它在水中的存在与饮用水质量下降有关，因为它会改变水的味道和气味[1]。吸附过程是去除水中苯酚最常用的处理方法之一，而活性炭因其高比表面积、孔隙率和低成本而成为一种合适的吸附剂。关于吸附过程的研究从不同的角度进行探讨，如平衡和热力学数据。在这项工作中，给出了苯酚在五种具有不同物理化学性质的活性炭上在水溶液中的吸附等温线。此外，还包括浸入焓、相互作用焓、吉布斯自由能和熵变。等温线数据用Freundlich和Sips模型进行拟合。浸入焓值在-7.670至-57.0 J/g之间，相互作用焓为48.00和-11.70 J/g，吉布斯自由能变化在-5337至-12322 J/mol·K之间，最后，熵变值在18.10至39.70 J/K之间。
