Rheological characterisation of synthetic and fresh faeces to inform on solids management strategies for non-sewered sanitation systems.

ABSTRACT: In order to obviate the economic issues associated with pit latrine emptying and transport such as high water additions and rheologically difficult sludge properties, the implications of prompt solid/liquid separation were investigated. This was achieved through rheological characterisation of fresh human faeces and synthetic faeces, and comparison with aged faecal sludges. Shear yield stress, thixotropy and post-shear structural recovery were characterised for a total solids (TS) concentration range of 5-35% total solids (TS) and stickiness yield stress was determined for concentrations up to 100% TS. Fresh faeces rheology proved to be favourable when compared to aged matrices, evidenced by a lower shear yield stress and higher gel point solids concentration, suggesting that aging could a

SUBMITTER: Mercer E 

PROVIDER: S-EPMC8542804 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature