The behavior and characteristics of phenol adsorption by activated carbon produced from co-pyrolysis of coal tar pitch and vinasse were investigated. Coal tar pitch and vinasse (mass ratio of 1:3) were firstly co-pyrolyzed and carbonated at 400 °C for 2 h. The carbonized material produced was then soaked with saturated KOH solution and activated at 800 °C for 1 h to form activated carbon. Results from the phenol wastewater adsorption experiments suggest that pseudo-second-order kinetics and the Weber-Morris model could reflect the time-dependent adsorption behavior of phenol wastewater by the activated carbon, revealing that internal diffusion represents the rate-limiting procedure and dominant process to control the adsorption rate in the early stage of the adsorption. Monolayer adsorption played the key role during the phenol adsorption. The adsorption was an endothermic reaction in temperature ranging from 15 °C to 35 °C, indicating that the adsorption speed could be stimulated by the increasing temperature. This study establishes a theoretical foundation for the usage and the potential application of the activated carbon derived from coal tar pitch and vinasse in wastewater treatment.

中文翻译：

---

废煤焦油沥青与酒糟共热解活性炭去除苯酚

研究了煤焦油沥青与酒糟共热解活性炭吸附苯酚的行为和特性。煤焦油沥青和酒糟（质量比为 1:3）首先在 400°C 下共热解和碳酸化 2 小时。然后将产生的碳化材料用饱和 KOH 溶液浸泡并在 800°C 下活化 1 小时以形成活性炭。苯酚废水吸附实验结果表明，拟二级动力学和 Weber-Morris 模型可以反映活性炭对苯酚废水的时间依赖性吸附行为，表明内扩散是限速过程和主导过程在吸附初期控制吸附速率。单层吸附在苯酚吸附过程中起关键作用。吸附是在 15°C 至 35°C 温度范围内的吸热反应，表明吸附速度可以通过升高温度来刺激。该研究为煤焦油沥青和酒糟活性炭在废水处理中的用途和潜在应用奠定了理论基础。