Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4484777 | Water Research | 2008 | 7 Pages |
Abstract
The influence of a backmixing operation on the convective belt drying of two wastewater sludges was studied. The expansion of the sludge extrudates bed due to increasing additions of dry product was quantified by using X-ray tomography. This non-invasive technique was used to determine the bed porosity and the total exchange area available for heat and mass transfers, for increasing levels of backmixing. For a same drying flux, the expansion of the drying bed leads to higher drying rates, allowing a reduction of the total drying time. In this context, rheological properties of the sludges are key properties.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
A. LĂ©onard, E. Meneses, E. Le Trong, T. Salmon, P. Marchot, D. Toye, M. Crine,