adba9b10_nversion_and_Biomass_to_Energy__Explanation
[Term] Solids retention time (SRT) [Explanation] 
The average length of time solid material remains in a reactor. SRT and HRT are equal for complete mix and plug flow reactors. Some two-stage reactor concepts and Upflow Anaerobic Sludge Blanket (UASB) reactors decouple HRT from the SRT allowing the solids to have longer contact time with microbes while maintaining smaller reactor volume and higher throughput.
Glossary: Conversion and Biomass-to-Energy
Explanation