Zhu Wenfeng, He Jiacheng, Wang Qianxi, Zhang Dongna, Qi Guoquan, Cai Xuehua, Li Peipei, Zhang Jiaoxia
State Key Laboratory of Oil and Gas Equipment, Tubular Goods Research Institute, China National Petroleum Corporation, Xi'an 710077, China.
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
Polymers (Basel). 2024 Jun 11;16(12):1648. doi: 10.3390/polym16121648.
With the swift progress of the electronics industry, discarded circuit boards have become an important source of non-degradable waste. In this work, discarded epoxy resin was collected as a precursor to prepare activated carbon (AC) through stepwise carbonization/activation methods. The rough carbon materials with a certain graphite and amorphous structure reveal the multiple oxygen-containing groups on their surface. In the process of studying the adsorption of methyl orange by activated carbon, it is found that the adsorption is in accordance with the quasi-secondary kinetic model, and equilibrium adsorption amounts can reach 41.051 mg/g. The adsorption isotherm of AC is more in line with the Langmuir model, and the saturation adsorption amount at three different temperatures is 23.137 mg/g, 30.358 mg/g, and 37.202 mg/g, respectively. The enthalpy (ΔH) is 17.30 KJ/mol in the adsorption process, which indicates that is a physical process with heat-absorbing capabilities. This work is of great significance with regard to the recycling of waste to reduce pollution and in terms of gaining economic benefits.
随着电子工业的迅速发展，废弃电路板已成为不可降解废物的重要来源。在这项工作中，收集废弃环氧树脂作为前驱体，通过分步碳化/活化方法制备活性炭（AC）。具有一定石墨和无定形结构的粗碳材料在其表面显示出多种含氧基团。在研究活性炭对甲基橙的吸附过程中，发现吸附符合准二级动力学模型，平衡吸附量可达41.051mg/g。AC的吸附等温线更符合Langmuir模型，在三个不同温度下的饱和吸附量分别为23.137mg/g、30.358mg/g和37.202mg/g。吸附过程中的焓（ΔH）为17.30KJ/mol，这表明这是一个具有吸热能力的物理过程。这项工作在废物回收以减少污染和获取经济效益方面具有重要意义。
