Ramie (Boehmeria Nivea) as Phytoremediation Crop for Heavy Metal-contaminated Paddy Soil in Southern China: Variety Comparison, Cd Accumulation, and Assessment of Fiber Recycling

Abstract Kenaf (Hibiscus cannabinus L.) is suitable for growing in heavy metal-polluted soil for non-food purposes, and can be used as a potential crop to remediate heavy metal-contaminated soil. The main objective of this study was to investigate kenaf phytoextraction of cadmium (Cd), including uptake, translocation, and accumulation differences in tissues among kenaf cultivars. A field experiment was conducted in a Cd contaminated paddy field in southern China area with 13 kenaf cultivars in 2015 and 2016. Agronomic performance, Cd concentrations in plant tissues (root, xylem, and phloem), and biomass of different tissues of each cultivar were measured and evaluated. Significant differences in Cd concentrations and accumulation among tissues and cultivars were observed. The phloem had the highest Cd accumulation and transfer capability compare with the roots and xylem. Approximately 35 ~ 65g of Cd could be taken up by the aerial parts of different kenaf cultivars within every hectare of soil. The percentage of Cd uptake by the phloem ranged from 47–61% and by the xylem ranged from 38–53%. By evaluating the agronomic traits and Cd bioaccumulation capacity, Fuhong 952, Fuhong 992, and Fuhong R1 were regarded as Cd accumulators for the phytoremediation of Cd-contaminated soil. Our study clearly demonstrated that a significant level of Cd in the soil was taken up through the phytoremediation with kenaf. In addition, harmless utilization of kenaf planting in Cd-contaminated paddy soil was discussed.

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Distribution characteristics of heavy metal(loid)s in aggregates of different size fractions along contaminated paddy soil profile

Environmental Science and Pollution Research ◽

10.1007/s11356-017-0012-4 ◽

2017 ◽

Vol 24 (30) ◽

pp. 23939-23952 ◽

Cited By ~ 19

Author(s):

Bin Huang ◽

Zhongwu Li ◽

Dingqiang Li ◽

Zaijian Yuan ◽

Zhiliang Chen ◽

...

Keyword(s):

Heavy Metal ◽

Paddy Soil ◽

Soil Profile ◽

Distribution Characteristics ◽

Size Fractions ◽

Contaminated Paddy Soil

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Effects of Cd-resistant bacteria and calcium carbonate + sepiolite on Cd availability in contaminated paddy soil and on Cd accumulation in brown rice grains

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2020.110492 ◽

2020 ◽

Vol 195 ◽

pp. 110492 ◽

Cited By ~ 2

Author(s):

Qian Li ◽

Ping Zhang ◽

Hang Zhou ◽

Pei-qin Peng ◽

Ke Zhang ◽

...

Keyword(s):

Calcium Carbonate ◽

Paddy Soil ◽

Brown Rice ◽

Resistant Bacteria ◽

Cd Accumulation ◽

Rice Grains ◽

Cd Availability ◽

Contaminated Paddy Soil

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Bioremediation of cadmium-contaminated paddy soil using an autotrophic and heterotrophic mixture

RSC Advances ◽

10.1039/d0ra03935g ◽

2020 ◽

Vol 10 (44) ◽

pp. 26090-26101

Author(s):

Menglong Xu ◽

Yazi Liu ◽

Yan Deng ◽

Siyuan Zhang ◽

Xiaodong Hao ◽

...

Keyword(s):

Heavy Metal ◽

Contaminated Soil ◽

Paddy Soil ◽

Contaminated Soils ◽

Short Term ◽

Remediation Technology ◽

Soil P ◽

Contaminated Paddy Soil

Bioremediation can be a promising and effective remediation technology for treating Cd contaminated soils. Cooperative bioremediation using heterotrophic and autotrophic mixtures proved to be an efficient, short-term bioremediation strategy for heavy metal contaminated soil.

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