| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Estadual Paulista UNESP, Inst Geociencias & Ciencias Exatas, Ave 24-A, 1515, C P 178, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Estadual Paulista UNESP, Programa Posgrad Engn Civil & Ambiental, Av 24-A, 1515, BR-13506900 Rio Clam, SP - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | Brazilian Journal of Chemical Engineering; v. 35, n. 4, p. 1203-1210, OCT-DEC 2018. |
| Web of Science Citations: | 0 |
| Abstract | |
ABSTRACT A temporal analysis of fractal aggregates during water flocculation is presented. Water was prepared using kaolin solution and a non-intrusive image-based analysis method was used for two-dimensional fractal dimension assessment (dF). The dF values were determined for aggregates larger than 270 µm from 100 images taken in each combination of velocity gradients (Gf) and flocculation times (Tf). The Gf values of 20, 30, 40, 50 and 60 s-1 and Tf values of 2 to 180 minutes were studied, with a ΔTf of 1 minute for 2 ≤ Tf ≤ 10 minutes and a ΔTf of 5 minutes for 10 ≤ Tf ≤ 180 minutes. Results showed that dF tends toward stability from a Tf of 40 minutes, with distinct levels in each Gf. Further, dF values decrease from 1.80 to 1.35 for Gf from 20 to 60 s-1. (AU) | |
| FAPESP's process: | 10/50694-0 - Development and application of an on-line floc sizer device aiming at the optimization of coagulation/flocculation and filtration |
| Grantee: | Marcelo de Julio |
| Support Opportunities: | Research Grants - Research Partnership for Technological Innovation - PITE |
| FAPESP's process: | 13/25641-9 - Procedure etermination for image acquisition to determine flocculent particles size in static reactors |
| Grantee: | Pedro Augusto Grava da Silva |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 17/19195-7 - Numerical and morphological dynamics of fractal aggregates formed during flocculation and their effects on solid-liquid separation |
| Grantee: | Rodrigo Braga Moruzzi |
| Support Opportunities: | Scholarships abroad - Research |