Method for repairing cadmium-arsenic polluted soil by utilizing bidens pilosa
A cloverleaf and compound pollution technology, applied in the field of phytoremediation of polluted environments, can solve problems such as slow research progress and limited rejection plants, and achieve the effects of strong operability, repairing cadmium pollution, and not causing secondary pollution
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[0013] The growth response of P. trifoliate under pollution conditions and the characteristics of arsenic absorption and accumulation are further explained in the following figure as a cadmium hyperaccumulator and arsenic rejection plant, which has certain utilization value for the control of arsenic pollution.
[0014]The test site is located in the Shenyang Ecological Experiment Station of the Chinese Academy of Sciences. The geographical location is 123°41′ east longitude, 41°31′ north latitude, and the altitude is about 50m. -164d, the annual precipitation is 650-700mm. The potting test soil was collected from the top soil (0-20cm) of the station. The soil type was meadow brown soil. Its physical and chemical properties were pH 6.56, organic matter 12.26g / kg, total N 0.91g / kg, total P 0.4g / kg, Total K 183g / kg, total Cd 0.17mg / kg, total Cu 32.9mg / kg, total Zn 28.1mg / kg, total Pb 11.1mg / kg, total As 2.1mg / kg.
[0015] After the test soil is air-dried and passed through a 4m...
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- IPC
- B09C1/00; B09C1/10
- Inventors
- 孙约兵; 周启星