School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Room 607, Yifu Science & Research Building, Ding 11 Xueyuan Road, 100083, Beijing, People's Republic of China.
Institute of Technology of Beijing Waterworks Group Co., Ltd., Beijing Engineering Research Center for Drinking Water Quality, 100012, Beijing, People's Republic of China.
Environ Sci Pollut Res Int. 2018 Feb;25(5):4803-4810. doi: 10.1007/s11356-017-0812-6. Epub 2017 Dec 3.
Bituminous coal-based magnetic activated carbon (MAC) was prepared, characterized, and used successfully for removal of cyclic volatile methylsiloxanes (cVMSs) from treated landfill leachate. Batch adsorption studies were performed at different adsorption dosages and contact times. With adsorptive dosage of 0.75 g/L and contact time of 60 min, the removal efficiencies achieved by MAC for octamethylcyclotetrasiloxane (D), decamethylcyclopentasiloxane (D), and dodecamethylcyclohexasiloxane (D) are 100, 82.8, and 71.4%, respectively. The specific magnetization coefficients of MAC before and after adsorption are 4.6 × 10 and 5.2 × 10 m/kg, between 1.26 × 10 and 3.8 × 10 m/kg, which suggests that MAC can be recycled by the high-intensity magnetic separators.
以烟煤为原料制备的磁性活性炭（MAC）被成功地用于去除经处理的垃圾渗滤液中的环状挥发性甲基硅氧烷（cVMSs）。在不同的吸附剂量和接触时间下进行了批量吸附研究。在吸附剂量为 0.75 g/L 和接触时间为 60 min 的条件下，MAC 对八甲基环四硅氧烷（D）、十甲基环五硅氧烷（D）和十二甲基环六硅氧烷（D）的去除效率分别达到 100%、82.8%和 71.4%。吸附前后 MAC 的比磁化系数分别为 4.6×10 和 5.2×10 m/kg，介于 1.26×10 和 3.8×10 m/kg 之间，这表明 MAC 可以通过强磁场分离器回收。
