Converting floating scum from municipal wastewater treatment plants to biodiesel fuel

Kirk Cobb, Erik Anderson, Min Addy, Yong Nie, Yanling Cheng, Peng Peng, Yiwei Ma, Huan Ma, Yuhuan Liu, Hanwu Lei, Paul Chen, Roger Ruan

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations


This chapter reviews current biodiesel production from various oil feedstocks and describes an innovative scum-to-biodiesel process and system development, including the specific unit operations involved in the extraction of oils from the scum. The scum is referred to as a material floating on the surface of primary and secondary settling tanks in wastewater treatment plants. The scum oils are then extracted and refined and can be converted to biodiesel. Scale-up considerations and the mass and energy balance of the process and the economic and environmental impacts of the technology are discussed. The unique technology has great potential in the recovery of wastewater scum and waste oil utilization for biodiesel production.

Original languageEnglish (US)
Title of host publicationWastewater Treatment Residues as Resources for Biorefinery Products and Biofuels
Number of pages17
ISBN (Electronic)9780128162040
StatePublished - Jan 1 2019

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Inc. All rights reserved.


  • Biodiesel
  • Glycerolysis
  • Scum
  • Waste oil
  • Wastewater treatment


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