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ORIGINAL RESEARCH
Study on Remediation of Cd Contamination
in Riverbed Soils Around Outfalls
by Six Typical Plants
1
Library, School of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin – 643000, China
2
College of Mechanical & Electrical Engineering, Shaanxi University of Science & Technology, Xian – 710021, China
Submission date: 2023-10-15
Final revision date: 2024-03-06
Acceptance date: 2024-04-13
Online publication date: 2024-07-19
Publication date: 2025-01-09
Corresponding author
Fengkui Xiong
Library, School of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin – 643000, China
Library, School of Mechanical Engineering, Sichuan University of Science & Engineering, Yibin – 643000, China
Pol. J. Environ. Stud. 2025;34(2):1221-1231
KEYWORDS
TOPICS
ABSTRACT
To study the phytoremediation effect of Cd pollution in the riverbed soil around the sewage,
the effects of six typical plants, namely Solanum nigrum L (SNL), Phytolacca acinosa roxb (PAR),
Nephrolepis auriculata (L.) (NAL), Pogonatherum crinitum (Thunb.) kunth (PCK), Pteris vittata L
(PVL), and Sedum lineare Thunb (SLT), on the Cd concentration in the soil with different pollution
levels (3, 5, and 8 mg/kg) and the Cd concentration in different parts of the plant (root, stem, and leaf)
after planting were studied to explore the remediation effects of different plants on different Cd polluted
soils. The research results show that when the concentration of Cd in the soil was 3 mg/kg, the Cd
enrichment coefficient of SNL and SLT was the largest. At the same time, the Cd concentrations in the
stem and leaf of SNL and the root and stem of SLT are 26.18, 40.26, 34.38, and 49.45 mg/kg, which can
be recycled by composting. Therefore, it is recommended to plant SNL or SLT to repair the Cd pollution
in the urban residential area. At 5 mg/kg, the Cd enrichment coefficient of SLT was the largest. At the
same time, the concentration of Cd in roots and stems was 65.79 and 108.11 mg/kg, which could be
reused by composting and hydrothermal transformation. Therefore, it is recommended to plant SLT to
repair the Cd pollution in the light industry zone. At 8 mg/kg, the Cd enrichment coefficients of NAL
and SNL were the largest. At the same time, the stem and leaf of SNL and the leaf of NAL could be
reused by composting and hydrothermal transformation. Therefore, it is recommended to plant NAL to
repair the Cd pollution in the heavy industry zone and mix NAL and SNL to repair the Cd pollution in
the chemical industry concentration zone.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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