Record Display for the EPA National Library Catalog


Main Title Conversion of Municipal Sludge to Oil.
Author Lee, K. M. ; Griffith, P. ; Farrell, J. B. ; Eralp, A. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. ;Cincinnati Univ., OH. Dept. of Civil and Environmental Engineering.
Year Published 1987
Report Number EPA/600/D-87/191;
Stock Number PB87-197547
Additional Subjects Conversion ; Sludge ; Oils ; Energy ; Catalysts ; Separation ; Sludge disposal ; Reprints ; Municipalities ;
Library Call Number Additional Info Location Last
NTIS  PB87-197547 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 35p
Thermal conversion of municipal sludge to oil has been investigated as a viable alternative for ultimate sludge disposal due to generation of energy. The conversion process using water as a solvent was evaluated in a batch mode using primary and secondary municipal sludges. A well defined oil separation procedure was developed in the research. The oil obtained after thermal conversion was dark brown, solid at room temperature and liquid at above 50 degrees C, with an average heat content of 9400 cal/g oil. The increase of oil mass and energy yields as a result of thermal reaction was 73 and 67% in the primary sludge, and 515 and 485% in the secondary sludge, respectively, all with 10.9% volatile solids content. Catalyst addition did not increase the oil mass and energy yields. Data showed that primary sludge produces more oil and energy and less byproduct than secondary sludge in the thermal conversion process.