Abstract The large amount of residues and pollutants left over from the drilling industry could cause irreparable damage by entering the human and animal food chain. Therefore, drilling waste management is of particular importance. Electrokinetic (EK) remediation is one of the methods used to remediate all types of soils contaminated with metal and organic pollutants, but the special conditions and properties of drilling wastes make the use of this method more complex for the treatment of this type of waste. In this study, by enhancing the EK method with Fenton technique, which is an advanced oxidation technique, and using copper and iron electrodes as anode, total petroleum hydrocarbons (TPH) were removed from the oil-based drilling waste. The best result in this study was obtained by reducing the initial concentration of TPH from 316000 to 72680 mg⁄kg in drilling waste. This 77% reduction in TPH concentration was achieved using the EK method coupled with Fenton technique along with the use of copper electrode. The use of iron electrode in the EK-Fenton (EK-F) method improved the parameters affecting the removal efficiency and pollutants decomposition and resulted in 69.6% TPH removal. These results show a 161% (copper) and 136% (iron) increase in TPH removal efficiency, respectively, compared to the conventional EK method, in which TPH removal was 29.4%. These results indicate that the use of EK-Fenton method combined with copper electrode is effective in removing TPH from drilling waste. Overall, the promising results of the present study indicate that the enhanced EK technique could be considered as an effective and environmentally friendly approach for the drilling waste remediation.

中文翻译：

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电动-芬顿法修复油基钻井废弃物

摘要 钻井行业遗留的大量残留物和污染物进入人类和动物的食物链，可能造成无法弥补的损害。因此，钻井废弃物管理尤为重要。电动（EK）修复是用于修复被金属和有机污染物污染的所有类型土壤的方法之一，但钻井废物的特殊条件和性质使得使用该方法处理此类废物更加复杂。在这项研究中，通过使用高级氧化技术 Fenton 技术增强 EK 方法，并使用铜和铁电极作为阳极，从油基钻井废物中去除总石油烃 (TPH)。本研究中最好的结果是通过将钻井废物中 TPH 的初始浓度从 316000 降低到 72680 mg/kg 获得的。这 77% 的 TPH 浓度降低是通过使用 EK 方法与 Fenton 技术以及铜电极的使用实现的。在 EK-Fenton (EK-F) 方法中使用铁电极改善了影响去除效率和污染物分解的参数，并导致 69.6% 的 TPH 去除率。这些结果表明，与传统的 EK 方法相比，TPH 去除效率分别提高了 161%（铜）和 136%（铁），其中 TPH 去除率为 29.4%。这些结果表明使用EK-Fenton法结合铜电极可以有效去除钻井废物中的TPH。全面的，