Abstract:

To solve the problem of soil pollution caused by atrazine and look for the active carbon matrix with better adsorption effect, high performance liquid chromatography (HPLC) was used to detect the residue of atrazine solution and suspension after treatment with four kinds of biochar, such as coal, wood, fruit and bamboo, in order to detect its adsorption dynamics in atrazine solution and soil. The results showed that, the coal-based activated carbon had better adsorption effect on atrazine solution and suspension with initial concentration of 100 mg/L and 10 mg/L, and the adsorption rate was 5.651%-68.42%; when the initial concentration of atrazine was 100 mg/L, the adsorption rate of coal-based activated carbon for atrazine solution was up to 23.49% at 40 min; compared with the control group, when the initial concentration of atrazine was 100 mg/L, the residue concentration of atrazine in the soil treated with coal-based activated carbon was the lowest after 42 days, and the adsorption rate of activated carbon was 91.39%. In conclusion, coal-based activated carbon can effectively degrade the content of atrazine in solution and soil, which will lay a foundation for the improvement of atrazine contaminated soil.

Key words: atrazine, activated carbon, adsorption, residue, HPLC