Adsorptive performance of coal-based magnetic activated carbon for cyclic volatile methylsiloxanes from landfill leachate

作者：Zhang, Chunhui^*; Jiang, Shan; Zhang, Wenwen

来源：Environmental Science and Pollution Research, 2018, 25(5): 4803-4810.

DOI：10.1007/s11356-017-0812-6

• Cyclic volatile methylsiloxanes (cVMSs)
• Magnetic activated carbon (MAC)
• Coal-based activated carbon
• Landfill leachate
• Adsorption dosages
• Contact times

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-4), decamethylcyclopentasiloxane (D-5), and dodecamethylcyclohexasiloxane (D-6) are 100, 82.8, and 71.4%, respectively. The specific magnetization coefficients of MAC before and after adsorption are 4.6 x 10(-7) and 5.2 x 10(-7) m(3)/kg, between 1.26 x 10(-7) and 3.8 x 10(-5) m(3)/kg, which suggests that MAC can be recycled by the high-intensity magnetic separators.

• 出版日期2018-2
• 单位中国矿业大学（北京）