Unveiling the Role of Mackinawite and Fe 0 Components in Arsenic(III) Removal by Sulfidated Zero-Valent Iron under Aerobic Conditions
In this study, we synthesized microscale sulfidated zerovalent iron (S-mZVI) with controllable mackinawite (FeS) content up to nearly 100 wt % and investigated the roles of FeS and Fe for arsenite (As(III)) sequestration under aerobic conditions. Batch experiments show that FeS and Fe contents deter...
Uložené v:
| Vydané v: | Environmental science & technology Ročník 59; číslo 6; s. 3252 |
|---|---|
| Hlavní autori: | , , , , , |
| Médium: | Journal Article |
| Jazyk: | English |
| Vydavateľské údaje: |
United States
18.02.2025
|
| Predmet: | |
| ISSN: | 1520-5851 |
| On-line prístup: | Zistit podrobnosti o prístupe |
| Tagy: |
Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
|
| Abstract | In this study, we synthesized microscale sulfidated zerovalent iron (S-mZVI) with controllable mackinawite (FeS) content up to nearly 100 wt % and investigated the roles of FeS and Fe
for arsenite (As(III)) sequestration under aerobic conditions. Batch experiments show that FeS and Fe
contents determine the kinetics and longevity of As removal by S-mZVI, respectively. The Fe
/FeS galvanic cell accelerates the consumption of Fe
by dissolved oxygen (DO) while preserving FeS to preferentially remove As as sulfide, which is protected from oxidation by Fe
. In column studies, mZVI and S
were mixed in sand to form S-mZVI in situ. Results of sequential extraction of reacted S-mZVI particles from different column zones and run stages further indicate that As formed as sulfide by S-mZVI, which was then oxidized by DO after Fe
depletion to form As-iron (hydr)oxides. X-ray absorption near-edge structure characterization confirmed that As sulfide is mainly in the form of realgar (As
S
). S-mZVI (2 wt % of column sand) reduces total As from 2 mg/L to 10 μg/L, up to 300 bed volumes, with a residence time of 70 min. In situ synthesis and cost advantages make S-mZVI a promising method to address As contamination issues worldwide. |
|---|---|
| AbstractList | In this study, we synthesized microscale sulfidated zerovalent iron (S-mZVI) with controllable mackinawite (FeS) content up to nearly 100 wt % and investigated the roles of FeS and Fe
for arsenite (As(III)) sequestration under aerobic conditions. Batch experiments show that FeS and Fe
contents determine the kinetics and longevity of As removal by S-mZVI, respectively. The Fe
/FeS galvanic cell accelerates the consumption of Fe
by dissolved oxygen (DO) while preserving FeS to preferentially remove As as sulfide, which is protected from oxidation by Fe
. In column studies, mZVI and S
were mixed in sand to form S-mZVI in situ. Results of sequential extraction of reacted S-mZVI particles from different column zones and run stages further indicate that As formed as sulfide by S-mZVI, which was then oxidized by DO after Fe
depletion to form As-iron (hydr)oxides. X-ray absorption near-edge structure characterization confirmed that As sulfide is mainly in the form of realgar (As
S
). S-mZVI (2 wt % of column sand) reduces total As from 2 mg/L to 10 μg/L, up to 300 bed volumes, with a residence time of 70 min. In situ synthesis and cost advantages make S-mZVI a promising method to address As contamination issues worldwide. |
| Author | Cai, Shichao He, Feng Wu, Zhongkuan Tan, Yurou Zhao, Jiawei Chen, Bo |
| Author_xml | – sequence: 1 givenname: Shichao surname: Cai fullname: Cai, Shichao organization: Institute of Environmental Processes and Pollution Control, and School of Environment and Ecology, Jiangnan University, Wuxi 214122, China – sequence: 2 givenname: Jiawei surname: Zhao fullname: Zhao, Jiawei organization: College of Environment, Zhejiang University of Technology, Hangzhou 310014, China – sequence: 3 givenname: Yurou surname: Tan fullname: Tan, Yurou organization: Institute of Environmental Processes and Pollution Control, and School of Environment and Ecology, Jiangnan University, Wuxi 214122, China – sequence: 4 givenname: Zhongkuan orcidid: 0000-0002-1411-5699 surname: Wu fullname: Wu, Zhongkuan organization: College of Environment, Zhejiang University of Technology, Hangzhou 310014, China – sequence: 5 givenname: Bo surname: Chen fullname: Chen, Bo organization: School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China – sequence: 6 givenname: Feng orcidid: 0000-0001-5702-4511 surname: He fullname: He, Feng organization: College of Environment, Zhejiang University of Technology, Hangzhou 310014, China |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/39920080$$D View this record in MEDLINE/PubMed |
| BookMark | eNo1kE1LAzEYhIMo9kPP3uQ96mFrPnbb5FiK1YWKUKsHLyWbvNHoNimbbaU_wP_tgsocBgbmGZgBOQ4xICEXjI4Y5exGmzTC1I5yQ5Xk8oj0WcFpVsiC9cggpQ9KKRdUnpKeUIpTKmmffD-HPfrahzdo3xGWsUaIDh60-fRBf_kWQQcLcwQKs7jZdpOhTeADTJuEwZursiyvYYmbuNc1VAd42tXOW92ihVdsYvai664CZRMD7ILFBqZdXHnT8YL1rY8hnZETp-uE538-JKv57Wp2ny0e78rZdJGZsaDZGAtXUaNNXqCTlhWKy4mkQihu3KTTGBnTTuU5nyjndPeCEBXT1ogClTR8SC5_sdtdtUG73jZ-o5vD-v8O_gO_RGNx |
| ContentType | Journal Article |
| DBID | CGR CUY CVF ECM EIF NPM |
| DOI | 10.1021/acs.est.4c09828 |
| DatabaseName | Medline MEDLINE MEDLINE (Ovid) MEDLINE MEDLINE PubMed |
| DatabaseTitle | MEDLINE Medline Complete MEDLINE with Full Text PubMed MEDLINE (Ovid) |
| DatabaseTitleList | MEDLINE |
| Database_xml | – sequence: 1 dbid: NPM name: PubMed url: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed sourceTypes: Index Database |
| DeliveryMethod | no_fulltext_linktorsrc |
| Discipline | Engineering Environmental Sciences |
| EISSN | 1520-5851 |
| ExternalDocumentID | 39920080 |
| Genre | Journal Article |
| GroupedDBID | --- -DZ -~X ..I .DC .K2 3R3 4.4 4R4 55A 5GY 5VS 6TJ 7~N 85S AABXI AAHBH ABBLG ABJNI ABLBI ABMVS ABOGM ABPPZ ABQRX ABUCX ACGFS ACGOD ACIWK ACJ ACPRK ACS ADHLV ADUKH AEESW AENEX AFEFF AFRAH AGXLV AHGAQ ALMA_UNASSIGNED_HOLDINGS AQSVZ BAANH BKOMP CGR CS3 CUPRZ CUY CVF EBS ECM ED~ EIF F5P GGK GNL IH9 JG~ LG6 MS~ MW2 NPM PQQKQ ROL RXW TN5 TWZ U5U UHB UI2 UKR UPT VF5 VG9 W1F WH7 XSW XZL YZZ ZCA |
| ID | FETCH-LOGICAL-c630-6e5fb0cac45ef8d159287803392cf7f7f6e11af944279ffa98233b1adc35e98c2 |
| IngestDate | Mon Jul 21 05:57:27 EDT 2025 |
| IsPeerReviewed | true |
| IsScholarly | true |
| Issue | 6 |
| Keywords | reactive oxygen species sequential extraction arsenic sulfidation column tests zerovalent iron speciation |
| Language | English |
| LinkModel | OpenURL |
| MergedId | FETCHMERGED-LOGICAL-c630-6e5fb0cac45ef8d159287803392cf7f7f6e11af944279ffa98233b1adc35e98c2 |
| ORCID | 0000-0002-1411-5699 0000-0001-5702-4511 |
| PMID | 39920080 |
| ParticipantIDs | pubmed_primary_39920080 |
| PublicationCentury | 2000 |
| PublicationDate | 2025-Feb-18 |
| PublicationDateYYYYMMDD | 2025-02-18 |
| PublicationDate_xml | – month: 02 year: 2025 text: 2025-Feb-18 day: 18 |
| PublicationDecade | 2020 |
| PublicationPlace | United States |
| PublicationPlace_xml | – name: United States |
| PublicationTitle | Environmental science & technology |
| PublicationTitleAlternate | Environ Sci Technol |
| PublicationYear | 2025 |
| SSID | ssj0002308 |
| Score | 2.4739668 |
| Snippet | In this study, we synthesized microscale sulfidated zerovalent iron (S-mZVI) with controllable mackinawite (FeS) content up to nearly 100 wt % and investigated... |
| SourceID | pubmed |
| SourceType | Index Database |
| StartPage | 3252 |
| SubjectTerms | Aerobiosis Arsenic Iron - chemistry Sulfides Water Pollutants, Chemical |
| Title | Unveiling the Role of Mackinawite and Fe 0 Components in Arsenic(III) Removal by Sulfidated Zero-Valent Iron under Aerobic Conditions |
| URI | https://www.ncbi.nlm.nih.gov/pubmed/39920080 |
| Volume | 59 |
| hasFullText | |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| link | http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwtZ1ba9RAFICHrYrUB9Fqvct58EFZUpPJ_bEUFxd0kXaV6kuZTGbs0G2yZJtt_QH-NX-XZyaTTdxF1AcJhJAhYZjzcW6Tc0LIC5fxjMo8c4QvpRPQnDppnucOjWgsmIhE2rTMfxdPJsnxcfphMPjR1sIsZ3FRJFdX6fy_ihrvobB16ew_iHv1UryB1yh0PKPY8fxXgv9YLIWatVVQh_brwfeMn6mCXaKHafYLRmLoGmVQFqbGTac9qoUoFNcu53isswWH4rzEmWkP9aieSaWTA_nwi6hK5xPT1mo4rhAeXYZWDfeF7ujEdQlhrrosYJv07-rp2ipMLgx2Fxu5_YPmD9lHp_qL_rKX2W42iRS7FKpLOBit-bmuynplX2qz43JaFl_Pagu_zWtQUyduVbGwuhgjW71r2VfWtn242tC8Pm064W6YBHRitL3jiz00s3sBd9OkKUfvsTA_NzDoJr3ahf7z6FqP7nZoi2zFkTYPE50zsv4ABnnJqqmU93ptJtvkZvv0WmRjPJzpHXLbhiaw3yB1lwxEsUNu9RpW7pDdX-QI1jAs7pHvK-oAqQNNHZQSetQBUgcjAS501IEqwFL3Epl7BZY4yL5BRxz0iANNHBjiwBIHHXH3yXT0Znrw1rF_-HB45LtOJEKZuZzxIBQyydGzxvg9cX302bmM8YiE5zGZBgGNUykZrpfvZx7LuR-iEuF0l1wrcMIPCTBfxBHGEtTDEJuGOQt129mEhT6TsS_DR-RBs7Yn86aLy0m76o9_O_KEbHdgPiXXJWoI8Yzc4MsLtaieGyn_BCgEjUA |
| linkProvider | National Library of Medicine |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Unveiling+the+Role+of+Mackinawite+and+Fe+0+Components+in+Arsenic%28III%29+Removal+by+Sulfidated+Zero-Valent+Iron+under+Aerobic+Conditions&rft.jtitle=Environmental+science+%26+technology&rft.au=Cai%2C+Shichao&rft.au=Zhao%2C+Jiawei&rft.au=Tan%2C+Yurou&rft.au=Wu%2C+Zhongkuan&rft.date=2025-02-18&rft.eissn=1520-5851&rft.volume=59&rft.issue=6&rft.spage=3252&rft_id=info:doi/10.1021%2Facs.est.4c09828&rft_id=info%3Apmid%2F39920080&rft_id=info%3Apmid%2F39920080&rft.externalDocID=39920080 |