Dose-dependent effects of MIL-88A(Fe) and MIL-101(Fe) on arsenic immobilization and phytoremediation using ramie (Boehmeria nivea L.)

文献类型： 外文期刊

第一作者： Ye, Jian

作者： Ye, Jian;Yin, Xingyan;Yang, Chunping;Tan, Xiaofei;Li, Chuang;Chen, Gaobin;Chen, Qiang;Dai, Mingyang;Ye, Jian;Yin, Xingyan;Yang, Chunping;Tan, Xiaofei;Li, Chuang;Chen, Gaobin;Chen, Qiang;Dai, Mingyang;Yin, Xingyan;Tan, Xiaofei;Li, Chuang;Chen, Gaobin;Yang, Chunping;Yang, Chunping;Chen, Ping

作者机构：

关键词： Metal-organic framework (MOF); Ramie phytoremediation; Soil remediation; As bioavailability; Microbial community

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）

ISSN： 1385-8947

年卷期： 2025 年 517 卷

页码：

收录情况： SCI

摘要： The efficacy and environmental effects of using metal-organic frameworks (MOFs) for the remediation of arsenic (As)-contaminated soil, a significant global problem, remain unclear. This study evaluated MIL-88A(Fe) and MIL101(Fe) coupled with ramie (Boehmeria nivea L.) for As-contaminated soil remediation. A soil incubation experiment revealed that 10,000 mg kg-1 MIL-88A(Fe) and MIL-101(Fe) reduced As bioavailability by 77.1 % and 65.0 %, respectively, and increased residual As fractions by 8 % and 7 % through Fe-As co-precipitation and adsorption. Divergent environmental effects emerged, which were probably due to differences in the framework structures and organic ligands: MIL-88A(Fe) improved soil urease activity and bacterial diversity, whereas MIL101(Fe) induced acidification (decreasing soil pH by 25 %) and salinity stress (elevating soil electrical conductivity (EC) by 946 %). A pot experiment showed that 1000 mg kg-1 MOFs enhanced ramie biomass via As immobilization, whereas 5000 mg kg-1 MIL-101(Fe) suppressed growth because exposure to the MOF caused root damage. The MOFs enriched Pseudomonas (As-oxidizing) and suppressed Dokdonella (pathogenic), enhancing plant resilience. Notably, 100 mg kg-1 MIL-101(Fe) increased As translocation to stems (14.8 %) and leaves (27.6 %). Hydroponic analyses showed that 50-200 mg L-1 MIL-101(Fe) mitigated As-induced chlorophyll degradation (elevating Soil and plant analyzer development (SPAD) by 12.8 %-28.3 %), whereas 500 and 1000 mg L-1 induced oxidative stress (reducing SPAD by 4.2 %-10.7 %). This study provides valuable insights into using Fe-based MOFs in soil remediation and highlights their beneficial and harmful effects.

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