- Title
- Evaluation of manganese application after soil stabilization to effectively reduce cadmium in rice
- Creator
- Liang, Yuanfang; Wu, Qi-Tang; Lee, Charles C. C.; Jiang, Cheng'ai; Wei, Zebin
- Relation
- Journal of Hazardous Materials Vol. 424 Part A, Issue 15 February 2022, no. 127296
- Publisher Link
- http://dx.doi.org/10.1016/j.jhazmat.2021.127296
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2022
- Description
- In order to produce safe rice from cadmium (Cd) contaminated soils, a special pot experiment in the field was proposed to facilitate the study of multiple remediation measures. In the field experiments, four treatments were selected for the first half of the year: rice without soil treatment (R); rice with zeolite stabilization (RZ); oilseed rape phytoremediation (OR); and inter-cropping Sedum alfredii and maize phytoremediation (IC). As the early rice with zeolite stabilization still contained elevated Cd, manganese (Mn) fertilizer was added in the late rice with a special pot experiment in the field. Results showed that, in the first crops, the grains of maize and oilseed rape contained Cd below the food standard limit, while Cd in rice grain exceeded the limit of 0.2 mg/kg. The RZ treatment did not reduce Cd in rice but decreased significantly Mn in rice straw. In the late rice, Mn fertilizer additionally reduced Cd in rice grain to 0.12 mg/kg in combination with the RZ treatment. Mn accumulation in rice straw was enhanced by Mn fertilizer. These results indicate that the pot experiment in the field provides a useful tool to further evaluate effective treatment combinations to reduce Cd in rice.
- Subject
- cadmium (Cd); stabilization; phytoremediation; manganese fertilizer; rice; SDG 15; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1475864
- Identifier
- uon:49677
- Identifier
- ISSN:0304-3894
- Language
- eng
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