Bibliographic Details
| Title: |
Back to chromite as a mineralogical strategy for long-term chromium pollution control |
| Authors: |
Tianci Hua, Yanzhang Li, Yuxuan Hu, Rongzhang Yin, Yanan Zhang, Bingxu Hou, Houze Lu, Xiang Ji, Xiangzhi Bai, Anhuai Lu, Yan Li |
| Source: |
Nature Communications, Vol 16, Iss 1, Pp 1-10 (2025) |
| Publisher Information: |
Nature Portfolio, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Science |
| Subject Terms: |
Science |
| More Details: |
Abstract Re-oxidation of Cr(III) in treated Cr-contaminated sites poses a considerable source of Cr(VI) pollution, necessitating stable treatment solutions for long-term control. This study explores the immobilization of Cr(VI) into chromite, the most stable and weathering-resistant Cr-bearing mineral, under ambient conditions. Batch experiments demonstrate chromite formation at pH above 7 and Fe(III)/Cr(III) ratios exceeding 1, with Fe(III) occupying all tetrahedral sites, essential for stability. A theoretical model is developed to evaluate the effects of pH and Fe(III)/Cr(III) ratios on chromite crystallinity, resulting in AI4Min-Cr, a publicly accessible platform offering real-time intelligent remediation strategies. To tackle the complexities of non-point source Cr pollution, we employ microbial methods to regulate on-site Eh and pH, optimizing chromite precipitation. Long-term stability tests confirm that chromite remained stable for over 180 days, with potential for magnetic separation recovery. This study presents a mineralogical strategy to address re-oxidation and Cr resource recovery in Cr-contaminated water and soil. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2041-1723 |
| Relation: |
https://doaj.org/toc/2041-1723 |
| DOI: |
10.1038/s41467-025-57300-z |
| Access URL: |
https://doaj.org/article/1681efef883347f5a1f7a26f4644a985 |
| Accession Number: |
edsdoj.1681efef883347f5a1f7a26f4644a985 |
| Database: |
Directory of Open Access Journals |
