Streche Constantin, Cocârţă Diana Mariana, Istrate Irina-Aura, Badea Adrian Alexandru
Bucharest, Faculty of Power Engineering, University POLITEHNICA of Bucharest, Splaiul Independentei 313, sector 6, Bucharest, 060042, Romania.
Bucharest, Faculty of Biotechnical Systems Engineering, University POLITEHNICA of Bucharest, Splaiul Independentei 313, sector 6, 060042, Bucharest, Romania.
Sci Rep. 2018 Feb 19;8(1):3272. doi: 10.1038/s41598-018-21606-4.
Currently, there are different remediation technologies for contaminated soils, but the selection of the best technology must be not only the treatment efficiency but also the energy consumption (costs) during its application. This paper is focused on assessing energy consumption related to the electrochemical treatment of polluted soil with petroleum hydrocarbons. In the framework of a research project, two types of experiments were conducted using soil that was artificially contaminated with diesel fuel at the same level of contamination. The experimental conditions considered for each experiment were: different amounts of contaminated soils (6 kg and 18 kg, respectively), the same current intensity level (0.25A and 0.5A), three different contamination degrees (1%, 2.5% and 5%) and the same time for application of the electrochemical treatment. The remediation degree concerning the removal of petroleum hydrocarbons from soil increased over time by approximately 20% over 7 days. With regard to energy consumption, the results revealed that with an increase in the quantity of treated soil of approximately three times, the specific energy consumption decreased from 2.94 kWh/kg treated soil to 1.64 kWh/kg treated soil.
目前，对于受污染土壤有不同的修复技术，但最佳技术的选择不仅要考虑处理效率，还要考虑其应用过程中的能源消耗（成本）。本文重点评估与石油烃污染土壤的电化学处理相关的能源消耗。在一个研究项目的框架内，使用在相同污染水平下人工被柴油污染的土壤进行了两种类型的实验。每个实验考虑的实验条件为：不同量的污染土壤（分别为6千克和18千克）、相同的电流强度水平（0.25安和0.5安）、三种不同的污染程度（1%、2.5%和5%）以及相同的电化学处理应用时间。关于从土壤中去除石油烃的修复程度在7天内随时间增加了约20%。关于能源消耗，结果表明，随着处理土壤量增加约三倍，单位能耗从2.94千瓦时/千克处理土壤降至1.64千瓦时/千克处理土壤。
