Publications by authors named "Yingfa Song"
In this paper, a floatation-advanced oxidation two-step process was proposed for deep oil removal of oil-based drilling cuttings (OBDC). In the first stage, a novel and simple degreasing solution was prepared and most of the base oil contained by OBDC was removed by flotation; in the second stage, the oil content of OBDC was further reduced by combined ultrasound + ozone (US + O) advanced oxidation. The recommended degreasing solution was a mixture of methanol, ammonium chloride, and water with a mass ratio of 1.
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- The study introduces a three-step treatment method combining ultrasonication, flotation, and advanced oxidation to effectively reduce the oil content in oil-based drilling cuttings (OBDCs) to very low levels.
- Recommended ultrasonication parameters include a 1:8 mass ratio of OBDCs to degreaser, 600 W power, and 30 min treatment, achieving a reduction from 20.10 wt% to 5.00 wt%.
- Subsequent flotation and advanced oxidation processes further decreased the oil content from 5.00 wt% to 2.01 wt% and then to 0.58 wt%, demonstrating a promising approach for handling OBDCs with high oil content.