Method of improving the conversion of Cadmium-containing plant biomass energy under the background of soil pollution

Abstract

Environmental pollution problems have gradually appeared in the sight of human beings, and environmental pollution problems are also deteriorating, especially soil pollution. The discharge of various metal wastewater makes the metal content of some land on the high side. However, in response to this prominent pollution problem, most of the methods of physical repair and chemical repair are now used. However, these two repair methods have some shortcomings. The method of soil pollution phytoremediation is still under further research. The most suitable method for Cadmium-containing plant biomass energy conversion are find by studying phytoremediation methods. This paper mainly studies the growth of rape and sunflower under different levels of Cadmium (Cd) treatment, improves the analysis of plant height, dry weight of roots and aerial parts, chlorophyll and proline content differences under different concentrations, and finds out the effect of Cd on plant growth. Charcoal, Bacillus subtilis, and earthworms are introduced, and their effects on cadmium-containing plants germination rate and biomass energy conversion are analyzed. The experimental results show that when the treatment level of Cd is 0–10 mg/kg, it can promote the growth of rape and sunflower, and then with the increasing concentration of Cd, the plant height, dry weight and chlorophyll of rape and sunflower decreased continuously, but when the Cd concentration is high, these indicators increased more slowly.