Membrane Distillation: Pre-Treatment Effects on Fouling Dynamics

Autor: Paula G. Santos, Cíntia M. Scherer, Adriano G. Fisch, Marco Antônio S. Rodrigues
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Membranes, Vol 11, Iss 12, p 958 (2021)
Druh dokumentu: article
ISSN: 2077-0375
DOI: 10.3390/membranes11120958
Popis: In the research reported in this paper, membrane distillation was employed to recover water from a concentrated saline petrochemical effluent. According to the results, the use of membrane distillation is technically feasible when pre-treatments are employed to mitigate fouling. A mathematical model was used to evaluate the fouling mechanism, showing that the deposition of particulate and precipitated material occurred in all tests; however, the fouling dynamic depends on the pre-treatment employed (filtration, or filtration associated with a pH adjustment). The deposit layer formed by particles is not cohesive, allowing its entrainment to the bulk flow. The precipitate fouling showed a minimal tendency to entrainment. Also, precipitate fouling served as a coupling agent among adjacent particles, increasing the fouling layer cohesion.
Databáze: Directory of Open Access Journals
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