4.6 Article

Arsenic availability and transportation in soil-rice system affected by iron-modified biochar

期刊

JOURNAL OF CENTRAL SOUTH UNIVERSITY
卷 28, 期 6, 页码 1901-1918

出版社

JOURNAL OF CENTRAL SOUTH UNIV
DOI: 10.1007/s11771-021-4738-2

关键词

arsenic; rice; iron-modified biochar (FeOS); iron plaque; speciation; uptake

向作者/读者索取更多资源

The addition of FeOS can significantly reduce the arsenic content in paddy soils and increase rice biomass, possibly by promoting the formation of iron plaque and altering microbial community structure.
Iron-modified biochar (FeOS) is known to be effective at immobilization of arsenic (As) in soils. A pot experiment was conducted to investigate the effects of FeOS on As availability and ttransportation in the soil-rice system at different growth stages of rice with different pollution levels. The results showed that Fe concentration decreased and As concentration increased in paddy soils with the FeOS addition, especially in 120 mg/kg As treatment, the As concentration decreased by 16.46% and 30.56% at the maturity stage with 0.5% and 1% FeOS additions, respectively. Compared with the control, the application of FeOS reduced the arsenic content in rice tissues and increased the biomass, with the root biomass increased by 12.68% and the shoot biomass was increased by 8.94% with the addition of 1% FeOS. This may be related to the promotion of iron plaque formation and the transformation of microbial community structure in FeOS treatments, in accordance with the result of gene abundance and Fe/As contents of iron plaque in the study. This study is expected to provide further support and theoretical basis for the application of FeOS in the remediation of As contaminated paddy soil.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据