Deposition of hematite particles on polypropylene walls in dynamic conditions
Апстракт
An experimental circulating water loop has been constructed to study the deposition of hematite particles of average diameter 320 nm on polypropylene pipe walls in the ranges pH 4-11, Re 3300-17,700 at 25 degrees C. Real-time turbidimetric measurements were used to measure the deposited concentrations. Results showed that the deposition rate increased when pH decreased and when the flow rate increased. Adhesion was observed even under repulsive electrostatic conditions (pH GT 7), where the surfaces of hematite and polypropylene were both negative, indicating that the kinetic energy of at least a part of the particles Surpassed the electrostatic repulsive potentials. The experimental Curves Were fitted by a model assuming simultaneous adhesion and removal of particles, leading to adhesion and removal rate constants, whose values depend on pH and flow rate. Removal is negligible below pH 9. (c) 2008 Elsevier Inc. All rights reserved.
Кључне речи:
Hematite / Particle / Deposition / Transport processes / Colloids / Kinetics / Adhesion / Turbulent flowИзвор:
Journal of Colloid and Interface Science, 2009, 330, 2, 284-291Финансирање / пројекти:
- French National Research Agency (ANR) [ANR-05-BLAN-0124-01], Ministry of Science of the Republic of Serbia [142004]
DOI: 10.1016/j.jcis.2008.10.079
ISSN: 0021-9797
PubMed: 19056091
WoS: 000262760600004
Scopus: 2-s2.0-57649099034
Колекције
Институција/група
VinčaTY - JOUR AU - Cerovic, Ljiljana AU - Lefevre, Gregory AU - Jaubertie, Anne AU - Fedoroff, Michel AU - Milonjić, Slobodan K. PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3623 AB - An experimental circulating water loop has been constructed to study the deposition of hematite particles of average diameter 320 nm on polypropylene pipe walls in the ranges pH 4-11, Re 3300-17,700 at 25 degrees C. Real-time turbidimetric measurements were used to measure the deposited concentrations. Results showed that the deposition rate increased when pH decreased and when the flow rate increased. Adhesion was observed even under repulsive electrostatic conditions (pH GT 7), where the surfaces of hematite and polypropylene were both negative, indicating that the kinetic energy of at least a part of the particles Surpassed the electrostatic repulsive potentials. The experimental Curves Were fitted by a model assuming simultaneous adhesion and removal of particles, leading to adhesion and removal rate constants, whose values depend on pH and flow rate. Removal is negligible below pH 9. (c) 2008 Elsevier Inc. All rights reserved. T2 - Journal of Colloid and Interface Science T1 - Deposition of hematite particles on polypropylene walls in dynamic conditions VL - 330 IS - 2 SP - 284 EP - 291 DO - 10.1016/j.jcis.2008.10.079 ER -
@article{ author = "Cerovic, Ljiljana and Lefevre, Gregory and Jaubertie, Anne and Fedoroff, Michel and Milonjić, Slobodan K.", year = "2009", abstract = "An experimental circulating water loop has been constructed to study the deposition of hematite particles of average diameter 320 nm on polypropylene pipe walls in the ranges pH 4-11, Re 3300-17,700 at 25 degrees C. Real-time turbidimetric measurements were used to measure the deposited concentrations. Results showed that the deposition rate increased when pH decreased and when the flow rate increased. Adhesion was observed even under repulsive electrostatic conditions (pH GT 7), where the surfaces of hematite and polypropylene were both negative, indicating that the kinetic energy of at least a part of the particles Surpassed the electrostatic repulsive potentials. The experimental Curves Were fitted by a model assuming simultaneous adhesion and removal of particles, leading to adhesion and removal rate constants, whose values depend on pH and flow rate. Removal is negligible below pH 9. (c) 2008 Elsevier Inc. All rights reserved.", journal = "Journal of Colloid and Interface Science", title = "Deposition of hematite particles on polypropylene walls in dynamic conditions", volume = "330", number = "2", pages = "284-291", doi = "10.1016/j.jcis.2008.10.079" }
Cerovic, L., Lefevre, G., Jaubertie, A., Fedoroff, M.,& Milonjić, S. K.. (2009). Deposition of hematite particles on polypropylene walls in dynamic conditions. in Journal of Colloid and Interface Science, 330(2), 284-291. https://doi.org/10.1016/j.jcis.2008.10.079
Cerovic L, Lefevre G, Jaubertie A, Fedoroff M, Milonjić SK. Deposition of hematite particles on polypropylene walls in dynamic conditions. in Journal of Colloid and Interface Science. 2009;330(2):284-291. doi:10.1016/j.jcis.2008.10.079 .
Cerovic, Ljiljana, Lefevre, Gregory, Jaubertie, Anne, Fedoroff, Michel, Milonjić, Slobodan K., "Deposition of hematite particles on polypropylene walls in dynamic conditions" in Journal of Colloid and Interface Science, 330, no. 2 (2009):284-291, https://doi.org/10.1016/j.jcis.2008.10.079 . .