Abstract
In this paper, research on pesticide adsorption mechanism of corn straw biochar based on KOH thermal activation is carried out. In this paper, corn stalks and pine needles are used as raw materials for preparing biomass charcoal, and biochar is prepared at temperatures of 200°C, 400°C, and 600°C. This paper uses thermogravimetric analysis, elemental analysis, electron microscopy scanning, aperture measurement, infrared spectroscopy, and other characterization techniques to analyze the structure and properties of biochar in detail. Moreover, this paper uses batch method to select different organic pesticides diuron and carbaryl to test their adsorption performance. This article discusses the relationship between the adsorption mechanism and structural characteristics of biochar for organic pollutants. In addition, this paper studies the adsorption mechanism of diuron and carbaryl in the loess by adding exogenous biochar to the loess. Finally, this article analyzes the impact of the addition of biochar on the environmental behavior of diesel-contaminated loess adsorption of organic pollutants. This paper studies the role of KOH thermally activated corn stover biochar in agricultural adsorption, and verifies the reliability of the method proposed in this paper through experimental studies.
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