Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/81771
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | - |
dc.creator | Wang, L | - |
dc.creator | Chen, L | - |
dc.creator | Tsang, DCW | - |
dc.creator | Zhou, YY | - |
dc.creator | Rinklebe, J | - |
dc.creator | Song, H | - |
dc.creator | Kwon, EE | - |
dc.creator | Baek, K | - |
dc.creator | Ok, YS | - |
dc.date.accessioned | 2020-02-10T12:29:05Z | - |
dc.date.available | 2020-02-10T12:29:05Z | - |
dc.identifier.issn | 0160-4120 | - |
dc.identifier.uri | http://hdl.handle.net/10397/81771 | - |
dc.language.iso | en | en_US |
dc.publisher | Pergamon Press | en_US |
dc.rights | © 2019 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/). | en_US |
dc.rights | The following publication Wang, L., Chen, L., Tsang, D. C. W., Zhou, Y. Y., Rinklebe, J., Song, H., . . . Ok, Y. S. (2019). Mechanistic insights into red mud, blast furnace slag, or metakaolin-assisted stabilization/solidification of arsenic-contaminated sediment. Environment International, 133, B, 105247, 1-10 is available at https://dx.doi.org/10.1016/j.envint.2019.105247 | en_US |
dc.subject | Green/sustainable remediation | en_US |
dc.subject | Potentially toxic element | en_US |
dc.subject | Arsenic leachability | en_US |
dc.subject | Waste valorization/recycling | en_US |
dc.subject | Hydration and polymerization | en_US |
dc.subject | Precipitation chemistry | en_US |
dc.title | Mechanistic insights into red mud, blast furnace slag, or metakaolin-assisted stabilization/solidification of arsenic-contaminated sediment | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 10 | - |
dc.identifier.volume | 133 | - |
dc.identifier.doi | 10.1016/j.envint.2019.105247 | - |
dcterms.abstract | Elevated level of arsenic (As) in marine sediment via deposition and accumulation presents long-term ecological risks. This study proposed a sustainable stabilization/solidification (S/S) of As-contaminated sediment via novel valorization of red mud waste, blast furnace slag and calcined clay mineral, which were selected to mitigate the increased leaching of As under alkaline environment of S/S treatment. Quantitative X-ray diffraction and thermogravimetric analyses illustrated that stable Ca-As complexes (e.g., Ca-5(AsO4)(3)OH) could be formed at the expense of Ca(OH)(2) consumption, which inevitably hindered the hydration process and S/S efficiency. The Si-29 nuclear magnetic resonance analysis revealed that incorporation of metakaolin for As immobilization resulted in a low degree of hydration and polymerization, whereas addition of red mud promoted Fe-As complexation and demonstrated excellent compatibility with As. Transmission electron microscopy and elemental mapping further confirmed the precipitation of crystalline Ca-As and amorphous Fe-As compounds. Therefore, red mud-incorporated S/S binder achieved the highest efficiency of As immobilization (99.9%), which proved to be applicable for both in-situ and ex-situ S/S of As-contaminated sediment. These results advance our mechanistic understanding for the design of green and sustainable remediation approach for effective As immobilization. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Environment international, Dec. 2019, v. 133, pt. B, 105247, p. 1-10 | - |
dcterms.isPartOf | Environment international | - |
dcterms.issued | 2019 | - |
dc.identifier.isi | WOS:000498906200041 | - |
dc.identifier.scopus | 2-s2.0-85074153391 | - |
dc.identifier.pmid | 31677577 | - |
dc.identifier.eissn | 1873-6750 | - |
dc.identifier.artn | 105247 | - |
dc.description.validate | 202002 bcrc | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_Scopus/WOS | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Wang_Mechanistic_Insights_Red.pdf | 3.38 MB | Adobe PDF | View/Open |
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