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Cited by 14Crystallization and Solubility StudiesCoagulation and Flocculation StudiesMinerals Flotation and Separation Techniques

Modeling of Mixing‐Precipitation Processes: Agglomeration

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Orlewski, Pawel M., Mazzotti, Marco·2020·Chemical Engineering & Technology
DOI 10.1002/ceat.201900551PMC PMC7319487
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Abstract

A comprehensive description of the barium sulfate precipitation process in a wide range of supersaturations is presented. By using an additive to stabilize the particles, the decoupling of the primary from the secondary processes, as well as the agglomeration from aggregation was possible. By being able to study the two processes independently, a model describing the agglomeration of barium sulfate in the range of high supersaturations was validated experimentally for the first time. The proposed model has proven to describe the experiments with a high degree of accuracy in the whole range of supersaturations investigated. Additionally, by comparing agglomeration kernels of various complexity, ranges where simplifications are possible were identified, thus enabling the future development of models with better performance.

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  • Heterogeneous nucleation parameters reflect what is known in literature; its rate has lower slope, lower exponential factor, and pre-exponential factor orders of magnitude lower.

    “Heterogeneous nucleation parameters reflect what is known in the literature. In this regard, its rate is supposed to have a lower slope, which is translated into a lower exponential factor,22 (i.e., the lower interfacial tension between the nucleation sites and the solution) and the pre-exponential factor to be orders of magnitude lower.”

    From Computational Modeling of Magnesium Hydroxide Precipitation and Kinetics Parameters Identification (2023) · cites this paper as [22]

    In “Primary Processes Revisited > Nucleation” (page unavailable), the paper defines the heterogeneous parameters as Ahet = aAhom and Bhet = bBhom, with fitted values a = 3 × 10⁻²¹ and b = 0.001. These support a much smaller pre-exponential factor and exponential parameter for the studied system. The paper does not establish that the smaller heterogeneous parameter represents lower interfacial tension between nucleation sites and the solution; it says a theoretical derivation of those parameters is not possible here. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

  • Analogous behavior was found for a similar geometry (Y-mixer) with similar operating conditions.

    “Analogous behavior was found for a similar geometry (Y-mixer) with similar operating conditions.22”

    From Computational Modeling of Magnesium Hydroxide Precipitation and Kinetics Parameters Identification (2023) · cites this paper as [22]

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Research works printed but not linked: 37

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Authors
Orlewski, P. M., & Mazzotti, M.
Affiliations
ETH Zurich (CH)
Corresponding author
Mazzotti, Marco
ORCID
Venue
Chemical Engineering & Technology
Publisher
Wiley
Published
2020-01-20
Volume
43
Issue
6
Pages
1029-1039
ISSN
  • 0930-7516 (ISSN-L)
  • 1521-4125
DOI
10.1002/ceat.201900551
PMC
PMC7319487
OpenAlex
W2996153717
Cited by
14
References
38
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 4 · 2021: 2
FWCI
0.18
Type
journal article
Language
en
Open access
Licence
Locations
  • Chemical Engineering & Technology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Repository for Publications and Research Data (ETH Zurich) (submittedVersion, cc-by)
  • ETH Zürich Research Collection (cc-by)
Funders
  • BASF
  • Horizon 2020 (2‐73959‐18)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Crystallization and Solubility Studies
  • Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
  • Physical Sciences › Environmental Science › Water Science and Technology › Minerals Flotation and Separation Techniques
Keywords
barium sulfate precipitation, agglomeration, supersaturation, primary nucleation, secondary nucleation, aggregation, agglomeration kernel, precipitation simulation

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