Abstract
Electric field efficiently enhanced thermochemical cleaning for oil recovery from oily sludge (OS) was proposed in this work, which was inspired by electro-kinetic (EK) remediation of sludge. The effects of different factors (e.g., current density, the concentration of solution, liquid to solid ratio) on oil removal efficiency of OS were investigated. It was found that the oil removal efficiency of OS could reach more than 60 wt% by electric field enhanced the instability of metastable emulsion system with a minimum energy consumption of 604.8 J/g. The content of the residual oil in the sludge could be lowered from 8.6 wt% to 2.8 wt% after being treatment under the optimum conditions, which showed a 143 wt% maximum increase in oil removal effiency compared to non electric field treatment. The recovered oil mainly consisted of long chain alkanes, which had high recovery value. Based on characterization and analysis results, the mechanism was speculated to provide guidance for the resource utilization of OS with low energy consumption in industrial processing.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Chemical Engineering and Processing - Process Intensification
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.