Rojo Adrian, Hansen Henrik K, Monárdez Omara, Jorquera Carlos, Santis Paulina, Inostroza Paula
Universidad Técnica Federico Santa María, Casilla 110-V, Valparaiso, Chile.
Bull Environ Contam Toxicol. 2017 Mar;98(3):304-309. doi: 10.1007/s00128-016-1858-8. Epub 2016 Jun 21.
Electro-kinetic remediation (EKR) with sinusoidal electric field obtained simultaneously with DC/AC voltage reduce the polarization of the EKR with DC voltage. The DC voltage value defines the presence of a periodic polarity reversal of the cell and the electrical charge for electro-kinetic transport. In this case, the AC frequency favors the breaking of polarization conditions resulting from the EKR with DC voltage. However, with high frequencies a negative effect occurs where the tailings behave as a filter circuit, discriminating frequencies of an electric signal. The goal of this work is to analyse the electrical behaviour of tailings in EKR experiments. The conditions selected were: DC/AC voltages: 10/15 and 20/25 V (peak values), and AC voltage frequencies 50-2000 Hz. When the AC frequency reaches 2000 Hz, the copper removal tends to zero, indicating that the tailing behaves as a high-pass filter in which the DC voltage was filtered out.
通过直流/交流电压同时获得的正弦电场进行电动修复（EKR），可减少直流电压下EKR的极化现象。直流电压值决定了电池周期性极性反转的存在以及电动传输的电荷。在这种情况下，交流频率有利于打破直流电压下EKR产生的极化条件。然而，在高频时会出现负面影响，尾矿表现为滤波电路，区分电信号的频率。这项工作的目的是分析EKR实验中尾矿的电学行为。选择的条件为：直流/交流电压：10/15和20/25 V（峰值），以及交流电压频率50 - 2000 Hz。当交流频率达到2000 Hz时，铜去除率趋于零，表明尾矿表现为高通滤波器，其中直流电压被滤除。
