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Cotransport of suspended colloids and nanoparticles in porous media

Malgaresi Gabriel V.C., Zhang H., Chrysikopoulos Constantinos, Bedrikovetsky, Pavel

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/15168AEF-2428-4FD0-B4F6-A7220F9B36A2-
Αναγνωριστικόhttps://doi.org/10.1007/s11242-019-01239-5-
Αναγνωριστικόhttps://link.springer.com/article/10.1007/s11242-019-01239-5-
Γλώσσαen-
Μέγεθος25 pagesen
ΤίτλοςCotransport of suspended colloids and nanoparticles in porous mediaen
ΔημιουργόςMalgaresi Gabriel V.C.en
ΔημιουργόςZhang H.en
ΔημιουργόςChrysikopoulos Constantinosen
ΔημιουργόςΧρυσικοπουλος Κωνσταντινοςel
ΔημιουργόςBedrikovetsky, Pavelen
ΕκδότηςSpringeren
ΠερίληψηThe objective of this study is to develop a model for cotransport of colloids and nanoparticles (NPs) in porous media under two particle capture mechanisms. The particle capture rate is proportional to the capture probability, which is a function of retained concentration, called the filtration function. Laboratory bench-scale experiments of individual transport of NPs and colloidal-size kaolinite clay particles through packed columns produced breakthrough curves (BTCs) that monotonically increased with time and stabilised at some value lower than the injected concentration. We discuss the filtration function that corresponds to BTCs stabilising at the concentration lower than the injected value. This so-called binary filtration function incorporates two particle capture mechanisms. The analytical transport model with a binary filtration function was capable to fit successfully BTCs obtained from individual transport experiments using kaolinite and NPs conducted by Chrysikopoulos et al. (Transp Porous Med 119(1):181–204, 2017). Assuming that the electrostatic particle–solid matrix interaction and the fraction of the solid matrix surface area occupied by a single attached particle (kaolinite or NP) are the same for individual transport of either kaolinite particles or NPs and for simultaneous cotransport of kaolinite particles and NPs, the proposed binary filtration function was extended for the cotransport case. Although the breakthrough data from cotransport experiments with kaolinite particles and NPs have six degrees of freedom, the developed cotransport model successfully matches the BTCs by tuning two constants only. This validates the developed model for cotransport of two colloidal populations with different attachments and straining rates.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2020-06-10-
Ημερομηνία Δημοσίευσης2019-
Θεματική ΚατηγορίαAnalytical modelen
Θεματική ΚατηγορίαAttachment and strainingen
Θεματική ΚατηγορίαColloidal transporten
Θεματική ΚατηγορίαCotransporten
Θεματική ΚατηγορίαNanoparticlesen
Βιβλιογραφική ΑναφοράG.V.C. Malgaresi, H. Zhang, C.V. Chrysikopoulos and P. Bedrikovetsky, "Cotransport of suspended colloids and nanoparticles in porous media," Transp. Porous Med., vol. 128, no. 1, pp. 153-177, May 2019. doi: 10.1007/s11242-019-01239-5en

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