Academic Journal
Two-Dimensional Modeling of Nano Zero-Valent Iron Transport and Retention before and after Phosphate Adsorption
| العنوان: | Two-Dimensional Modeling of Nano Zero-Valent Iron Transport and Retention before and after Phosphate Adsorption |
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| المؤلفون: | Lin, Dantong, Hu, Liming, Lo, Man Chi |
| بيانات النشر: | American Chemical Society |
| سنة النشر: | 2022 |
| المجموعة: | The Hong Kong University of Science and Technology: HKUST Institutional Repository |
| مصطلحات موضوعية: | Nano zero-valent iron, Phosphate adsorption, Transport and retention, Two-dimensional model test |
| الوصف: | The mobility of nano zero-valent iron (nZVI) will greatly affect its practical application as a remediation material for contaminated groundwater. One-dimensional (1D) column tests are commonly used in previous work to study its migration behavior, but the two-dimensional (2D) test is still very limited. This study reports a novel research system to study the 2D transport and retention behavior of colloids and solutes, which includes a 2D model test setup and the corresponding image analysis method. The transport behaviors of methyl orange (MO), nZVI, and phosphate-loaded nZVI (PnZVI) are studied using this system. The results show that the research system can reasonably describe the tempo-spatial concentration distribution of colloids and solutes. After phosphate adsorption, the mobility of nZVI is enhanced due to the increase in negative surface charge, which implies a potential environmental risk of nZVI to facilitate contaminant transport. The migration of PnZVI is not significantly influenced by its density, which is faster than MO in the longitudinal direction. The range of the plume of PnZVI in the longitudinal direction is larger than that of MO, which implies that PnZVI has a stronger longitudinal dispersion than MO. © 2022 American Chemical Society. All rights reserved. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0013-936X 1520-5851 |
| Relation: | https://repository.hkust.edu.hk/ir/Record/1783.1-123401; Environmental Science and Technology, v. 56, (24), December 2022, p. 17712-17719; https://doi.org/10.1021/acs.est.2c05974; http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0013-936X&rft.volume=56&rft.issue=24&rft.date=2022&rft.spage=17712&rft.aulast=Lin&rft.aufirst=D.&rft.atitle=Two-Dimensional+Modeling+of+Nano+Zero-Valent+Iron+Transport+and+Retention+before+and+after+Phosphate+Adsorption&rft.title=Environmental+Science+and+Technology; http://www.scopus.com/record/display.url?eid=2-s2.0-85143399283&origin=inward; http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000891695800001 |
| DOI: | 10.1021/acs.est.2c05974 |
| الاتاحة: | https://repository.hkust.edu.hk/ir/Record/1783.1-123401 https://doi.org/10.1021/acs.est.2c05974 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0013-936X&rft.volume=56&rft.issue=24&rft.date=2022&rft.spage=17712&rft.aulast=Lin&rft.aufirst=D.&rft.atitle=Two-Dimensional+Modeling+of+Nano+Zero-Valent+Iron+Transport+and+Retention+before+and+after+Phosphate+Adsorption&rft.title=Environmental+Science+and+Technology http://www.scopus.com/record/display.url?eid=2-s2.0-85143399283&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000891695800001 |
| رقم الانضمام: | edsbas.976B4597 |
| قاعدة البيانات: | BASE |
| تدمد: | 0013936X 15205851 |
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| DOI: | 10.1021/acs.est.2c05974 |