Department of Environmental Engineering, Faculty of Engineering, Mersin University, Çiftlikköy Campus, Mersin, Turkey.
Department of Civil Engineering, Faculty of Engineering and Architecture, Arel University, Istanbul, Turkey.
Chemosphere. 2019 Aug;229:181-187. doi: 10.1016/j.chemosphere.2019.04.201. Epub 2019 Apr 30.
In this study, a combined continuous flow system was designed to remove Pb and Cd from heavily contaminated mine tailing soils. 0.05 M NaEDTA was used as a chelating agent to remove Pb and Cd from polluted soil, taken from the vicinity of Kayseri ÇİNKUR, Turkey. The initial concentrations of Pb and Cd were 16381 ± 643 and 34347 ± 1310 mg kg, respectively. The electrochemical treatment process was applied to the waste washing solution, which emerged after being extracted from soil column and contained Pb and Cd. Metal ions were transformed to the metallic form by applying the electrochemical treatment process to the washing solution, containing Pb and Cd. At the end of the leaching experiment, which was done with a 50 g soil sample in the soil column system, Pb and Cd removal efficiencies from soil were 59.72% and 58.01%, respectively. Then, the soil column solution was subjected to electrolysis through a 48 h period at 10 V. The electrochemical removal efficiency of ions, which moved from column to solution, was 84.46% for Pb and 59.21% for Cd.
在这项研究中，设计了一种组合式连续流系统，用于去除重度污染矿山尾矿土壤中的 Pb 和 Cd。采用 0.05 M 的 NaEDTA 作为螯合剂，从土耳其开塞利 ÇINKUR 附近采集受污染土壤，去除 Pb 和 Cd。Pb 和 Cd 的初始浓度分别为 16381 ± 643 和 34347 ± 1310 mg kg。电化学处理过程应用于从土壤柱中提取的含 Pb 和 Cd 的废水洗涤液中。通过对含 Pb 和 Cd 的洗涤液进行电化学处理，将金属离子转化为金属形式。在土壤柱系统中用 50 g 土壤样品进行浸出实验结束时，土壤中 Pb 和 Cd 的去除率分别为 59.72%和 58.01%。然后，将土壤柱溶液在 10 V 下进行 48 小时的电解。对于从土壤柱中转移到溶液中的离子，电化学去除效率为 Pb 的 84.46%和 Cd 的 59.21%。
