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Research articles

ScienceAsia 48 (2022): 310-316 |doi: 10.2306/scienceasia1513-1874.2022.041

Absorption and enrichment characteristics of aquatic plants under cobalt stress

Yonghong Zhenga,b,c, Fangling Chena, Zhiguo Zhanga,*, Weiqing Caia, Chengnan Maa, Yongqiang Denga, Chao Fanga, Zhilin Zhanga

ABSTRACT:      The 6 different genera Canna indica L., Eichhornia crassipes, Nelumbo nucifera, Iris pseudacorus L., Ceratophyllum demersum L., and Myriophyllum spicatum L. were selected as experimental plants. All genera could remove cobalt (Co) from water, and E. crassipes showed the highest removal efficiency of 94.86%. C. demersum L. showed the strongest enrichment ability with a maximum comprehensive enrichment coefficient of 4214.08. For different aquatic plant species, the best harvest time should be considered, and different harvesting methods should be adopted to avoid secondary pollution caused by the decomposition of aquatic plants. In combination with the landscape effect of aquatic plants, the floating plants, E. crassipes and C. demersum L., can be considered potential species for the remediation of Co-polluted water body.

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a School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui 232001 China
b Huainan Mining (Group) Co., Ltd., China, Huainan 232001 China
c National Engineering Laboratory for Protection of Colliery Eco-Environment, Huainan 232001 China

* Corresponding author, E-mail: zzgaust@aust.edu.cn

Received 7 Jul 2021, Accepted 1 Dec 2021