Preparing method and evaluating method of organic pollutant adsorbent

Abstract

The invention provides a preparing method and an evaluating method of an organic pollutant adsorbent. The preparing method includes following steps: placing air-dried crop straws in an opened container, lighting the straws to enable the straws to burn fully, and collecting straw ash after the straws being burned, wherein the straw ash is the organic pollutant adsorbent. The invention also provides the evaluating method of the organic pollutant adsorbent. The evaluating method includes following steps: processing the adsorbent through a density classification method and a repeatedly acid pickling method to obtain light components, heavy components and carbon-based components in the adsorbent; and carrying out an adsorption experiment to a representative soil organic pollutant, with the crop straws which is used for preparing the adsorbent and the prepared adsorbent together, according to a batch equilibrium method for calculating an equilibrium concentration of the organic pollutant on the adsorbent, thereby obtaining an adsorption isotherm of the adsorbent to the organic pollutant. The invention provides the preparing method and the evaluating method of the organic pollutant adsorbent. The methods are simple. The adsorbent is excellent in performance, is stable and reliable, is low in cost and can be widely applied in repair and treatment of soil organic pollution.

Description

technical field [0001] The invention relates to a preparation and evaluation method of an organic pollutant adsorbent, belonging to the field of organic pollution environment restoration. Background technique [0002] The rapid economic development has caused a great burden on the ecological environment. After water pollution and air pollution, the pollution of the soil environment has become increasingly prominent. The National Environmental Protection "Twelfth Five-Year Plan" has clearly proposed to strengthen soil environmental protection and It is required to promote the restoration of contaminated sites and soil in key areas, and increase investment in soil pollution restoration and control. [0003] The soil organic matter pollution caused by the production activities of chemical factories and the application of pesticides and insecticides in farmland, like heavy metal pollution, is persistent and accumulative, and can be transmitted into the human body through the foo...

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