Effect of different ramie (Boehmeria nivea L. Gaud) cultivars on the adsorption of heavy metal ions cadmium and lead in the remediation of contaminated farmland soils
文献类型： 外文期刊
作者： Zhu, Shoujing 2 ; Shi, Wenjuan 2 ; Zhang, Jian 1 ;
作者机构： 1.Anhui Acad Agr Sci, Inst Hort, Hefei, Peoples R China
2.Yichun Univ, Coll Life Sci Resources & Environm, Yichun, Peoples R China
3.Key Lab Crop Growth & Dev Regulat Jiangxi Prov, Yichun, Peoples R China
4.Hunan Agr Univ, Inst Ramie, Changsha, Peoples R China
关键词： Boehmeria nivea; cadmium; lead; phytoremediation; soil pollution
期刊名称：OPEN CHEMISTRY （ 影响因子：1.977； 五年影响因子：2.298 ）
ISSN： 2391-5420
年卷期： 2022 年 20 卷 1 期
页码：
收录情况： SCI
摘要： Heavy metal ions, including cadmium (Cd) and lead (Pb), are serious pollutants in farmland soils. The effective removal of heavy metals is an important task in soil remediation. This study aimed to evaluate the ability of seven ramie (Boehmeria nivea L. Gaud) cultivars to remove heavy metals. Results showed that the seven ramie varieties grew well in Cd and Pb polluted soils. The aboveground biological tissues and raw fiber yield of "Zhongzhu1" were 20.71 and 24.61 Mg ha(-1) per year, respectively, which were significantly higher than those of the six other varieties. Cd levels in each ramie part can be arranged as husks > root > stem bone > leaf > raw fiber, while Pb levels in each ramie part can be arranged as root > leaf > husks > stem bone > raw fiber. The Cd content in the shoots of "Zhongzhu1" was 19.89 mg kg(-1), and the Pb content of the aboveground shoots of "Shiqianzhugenma" was 9.41 mg kg(-1). The extraction efficiency of Cd in "Zhongzhu1" was greatly higher than those of the six other varieties. The extraction efficiency of Pb was similar in all varieties. Our observations suggest that ramie can be used to remove toxic ions (Cd and Pb). This study provides a new understanding of planting ramie for heavy metal removal from contaminated soils.
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