Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence
12 pages, 6 figures, 4 tables.-- Data availability: Data will be made available on request
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| Format: | artículo biblioteca |
| Language: | English |
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Elsevier
2024-11
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| Subjects: | Coagulation, Microplastics, Marine aggregates, Particle-laden flow, Turbulence, Ensure availability and sustainable management of water and sanitation for all, |
| Online Access: | http://hdl.handle.net/10261/374037 |
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dig-icm-es-10261-3740372024-12-10T12:26:25Z Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence Pizzi, F. Rahmani, M. Romera-Castillo, Cristina Peters, Francesc Grau, J. Capuano, F. Jofre, Lluís Generalitat de Catalunya Ministerio de Educación y Formación Profesional (España) Digital Research Alliance of Canada Agencia Estatal de Investigación (España) Coagulation Microplastics Marine aggregates Particle-laden flow Turbulence Ensure availability and sustainable management of water and sanitation for all 12 pages, 6 figures, 4 tables.-- Data availability: Data will be made available on request The dynamics and aggregation of microplastics in marine environments are investigated through high-fidelity direct numerical simulations with Lagrangian point-particle tracking. The properties of microplastics and biogenic particles, including size, density, and concentration, align with scenarios typical of seawater systems. The stickiness nature of microplastics, induced by biofilm formation (biofouling), is modeled through coagulation efficiency (stickiness parameter), which represents the probability of aggregation following a collision event. Two main aspects are at the core of the present work: analyzing the mechanisms of collision and coalescence between microplastics and biogenic particles, along with their spatial distribution, and characterizing the emerging aggregates. The results indicate that particles stickiness, concentration and (especially) size impact on the collision and coalescence rates. Furthermore, microplastics exhibit a strong tendency to accumulate near biogenic particles, leading to the creation of hetero-aggregates whose tendency to sink supports the general hypothesis of “missing microplastics”. Particularly, in cases where microplastics and biogenic particles are evenly concentrated, microplastics primarily contribute to the formation of aggregates. The stickiness mainly determines the most complex and large aggregates, which are less than 1% of the total The authors gratefully acknowledge the Serra Húnter and SGR (2021-SGR-01045) programs of the Generalitat de Catalunya (Spain), the Beatriz Galindo program (Distinguished Researcher, BGP18/00026) of the Ministerio de Educación Formación Profesional (Spain), and the computer resources at Cedar and Niagara provided by the Digital Research Alliance of Canada (RAC-2023 kfw-162-04) With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S) Peer reviewed 2024-12-10T12:25:55Z 2024-12-10T12:25:55Z 2024-11 artículo Publisher's version Advances in Water Resources 193: 104798 (2024) 0309-1708 CEX2019-000928-S http://hdl.handle.net/10261/374037 10.1016/j.advwatres.2024.104798 en https://doi.org/10.1016/j.advwatres.2024.104798 Sí open Elsevier |
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| topic |
Coagulation Microplastics Marine aggregates Particle-laden flow Turbulence Ensure availability and sustainable management of water and sanitation for all Coagulation Microplastics Marine aggregates Particle-laden flow Turbulence Ensure availability and sustainable management of water and sanitation for all |
| spellingShingle |
Coagulation Microplastics Marine aggregates Particle-laden flow Turbulence Ensure availability and sustainable management of water and sanitation for all Coagulation Microplastics Marine aggregates Particle-laden flow Turbulence Ensure availability and sustainable management of water and sanitation for all Pizzi, F. Rahmani, M. Romera-Castillo, Cristina Peters, Francesc Grau, J. Capuano, F. Jofre, Lluís Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| description |
12 pages, 6 figures, 4 tables.-- Data availability: Data will be made available on request |
| author2 |
Generalitat de Catalunya |
| author_facet |
Generalitat de Catalunya Pizzi, F. Rahmani, M. Romera-Castillo, Cristina Peters, Francesc Grau, J. Capuano, F. Jofre, Lluís |
| format |
artículo |
| topic_facet |
Coagulation Microplastics Marine aggregates Particle-laden flow Turbulence Ensure availability and sustainable management of water and sanitation for all |
| author |
Pizzi, F. Rahmani, M. Romera-Castillo, Cristina Peters, Francesc Grau, J. Capuano, F. Jofre, Lluís |
| author_sort |
Pizzi, F. |
| title |
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| title_short |
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| title_full |
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| title_fullStr |
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| title_full_unstemmed |
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| title_sort |
impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence |
| publisher |
Elsevier |
| publishDate |
2024-11 |
| url |
http://hdl.handle.net/10261/374037 |
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