数字农科院2.0

Sepiolite-supported nanoscale zero-valent iron alleviates Cd&As accumulation in rice by reducing Cd&As bioavailability in paddy soil and promoting Cd&As sequestration in iron plaque

文献类型： 外文期刊

作者： Shuo Sun;Jiaqing Huang;Jiong Wen;Zhi Peng;Nan Zhang;Yanan Wang;Yang Zhang;Shiming Su;Xibai Zeng

作者机构：

关键词： Cd&As bioavailability;Cd&As co-contaminated soil;Cd&As co-remediation;Iron plaque;Rice grain;Sepiolite-supported nanoscale zero-valent iron

期刊名称： Environmental Technology and Innovation

ISSN： 2352-1864

年卷期： 2024 年 33 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Cadmium and arsenic (Cd&As) co-contaminated paddy soil is the main reason for excessive Cd&As in rice. However, the opposite chemical behaviors of Cd&As posed a challenge to the simultaneous remediation of Cd&As and the reduction of Cd&As content in rice. The synthesized sepiolite-supported nanoscale zero-valent iron (S-nZVI) exhibits exceptional efficacy in Cd&As adsorption. The effects of S-nZVI on Cd&As availability in soil and Cd&As accumulation in rice need to be further investigated. This study applied different amounts of S-nZVI (0.1%−0.6%) to paddy soils for rice cultivation. The findings revealed that the Cd&As concentrations in rice grains reduced by 46.18%− 68.13% and 24.26%− 57.16%, respectively, under 0.1%− 0.6% S-nZVI application. S-nZVI significantly decreased Cd&As concentrations (Cd: 8.23%−86.70%, As: 5.69%−82.03%) in pore water and transformed Cd&As chemical speciation to immobile fractions, reducing the Cd&As availability to rice. Moreover, S-nZVI facilitated iron plaque formation and Cd&As sequestration in iron plaques, inhibiting the absorption of Cd&As by rice roots. Notably, the lower application of S-nZVI (0.1%−0.2%) improved soil pH, more effectively inhibited rice uptake of soil Cd, and increased rice yield. The increased soil pH, decreased Eh, and surface complexation with iron oxyhydroxide were responsible for Cd immobilization, while the formation of inner-sphere chelates with iron oxyhydroxide predominated As immobilization. These findings suggest S-nZVI has the potential to be an effective material for remediating Cd&As co-contaminated paddy soil and alleviating Cd&As accumulation in rice.

分类号：

  • 相关文献

[1]Iron plaque enhances phosphorus uptake by rice (Oryza sativa) growing under varying phosphorus and iron concentrations. Liang, Y.,Zhu, Y. -G.,Xia, Y.,Li, Z.,Ma, Y.. 2006

[2]Is the effect of silicon on rice uptake of arsenate (As-v) related to internal silicon concentrations, iron plaque and phosphate nutrition?. Guo, W.,Zhu, Y.-G.,Liu, W.-J.,Liang, Y.-C.,Geng, C.-N.,Wang, S.-G.. 2007

[3]Excessive sulfur supply reduces arsenic accumulation in brown rice. Fan, J.,Xia, X.,Hu, Z.,Ziadi, N.,Liu, C..

[4]Iron-modified biochar effectively mitigates arsenic-cadmium pollution in paddy fields: A meta-analysis. Beilei Wei,Dongliang Zhang,Paramsothy Jeyakumar,Lukáš Trakal,Hailong Wang,Keke Sun,Ying Wei,Xiaoqi Zhang,Huarong Ling,Shijie He,Hanqian Wu,Zhigang Huang,Chong Li,Ziting Wang. 2024

[5]Green manuring reduces cadmium accumulation in rice: Roles of iron plaque and dissolved organic matter. Jiancheng Xie,Qianyu Fan,Ting Liang,Hai Liang,Hui Wang,Zhaogui Gui,Ji Wu,Songjuan Gao,Weidong Cao. 2024

[6]Oxygen-nanobubble-loaded biochar increases soil carbon sequestration in rice paddies. Yiyu Lan,Qingnan Chu,Xiangyu Liu,Shuhan Xu,Detian Li,Chengming Zhang,Ping He,Xianwen Feng,Hanlin Zhang,Zhimin Sha. 2025

[7]Analysis of ustiloxins in rice using polymer cation exchange cleanup followed by liquid chromatography-tandem mass spectrometry. Cao, Zhao-Yun,Mou, Ren-Xiang,Lin, Xiao-yan,Zhou, Rong,Ma, You-Ning,Chen, Ming-Xue,Sun, Li-Hua.

[8]Mitigation of cadmium and arsenic in rice grain by applying different silicon fertilizers in contaminated fields. Wang, Hong-Yan,Cen, Kuang,Wang, Hong-Yan,Chen, Peng,Sun, Guo-Xin,Wen, Shi-Lin,Zhang, Lu.

[9]Developing thermal infrared de-ghost and multi-level nested conglutinated segmentation algorithm for detection of rice seed setting rate. Jun Zhou,Xiangyu Lu,Rui Yang,Yaliang Wang,Huizhe Chen,Jianxun Shen,Mengyuan Chen,Zhenjiang Zhou,Fei Liu. 2023

[10]Cadmium in Rice Is Affected by Fertilizer‐Borne Chloride and Sulfate Anions: Long‐Term Field Versus Pot Experiments. Hussain B.,Ma Y.,Li J.,Gao J.,Ullah A.,Tahir N.. 2022

[11]QTL MAPPING FOR GRAIN APPEARANCE QUALITY TRAITS USING DOUBLED HAPLOID POPULATION OF RICE UNDER DIFFERENT ENVIRONMENTS. Fahad Ali,Wei Chen,Sajid Fiaz,Yakun Wang,Xiangjin Wei,Lihong Xie,Guiai Jiao,Gaoneng Shao,Shikai Hu,Shaoqing Tang,Zhonghua Sheng,Peisong Hu. 2022

[12]Spatial and variety distributions, risk assessment, and prediction model for heavy metals in rice grains in China. Z. Cao,Meiyan Guan,Xiaoyan Lin,Wanyue Zhang,Ping Xu,Mingxue Chen,Xiaolong Zheng. 2024

作者其他论文 更多>>