Preparation method of wood fiber-based microorganism-loaded material for repairing organic contaminated soil
A technology for wood fiber and organic pollution, applied in the field of organic polluted soil remediation, can solve the problems of unfavorable microorganisms obtaining nutrients, discharge of dissolved oxygen microbial metabolites, weak adsorption, etc., to achieve harmless degradation, accelerated degradation, and improved Effect of contact area
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[0027] A method for preparing a lignocellulosic-based microorganism-loaded material for remediating organically polluted soil, comprising the following steps:
[0028] (1) Extraction and purification of lignocellulosic base: select agricultural wastes for mechanical crushing, sieve through soil, soak the solid particles in lye after sieving, and cook the solid particles in a high-temperature pressure cooker after lye soaking After cooking, cool to room temperature, collect the filtrate and add dropwise acidic solution to adjust the pH, filter after the solids in the filtrate are completely precipitated, wash the filter residue with acidic solution and distilled water successively for several times, freeze-dry for 24h to constant weight, and obtain the lignocellulosic base Material;
[0029] Agricultural waste includes one or more of rice straw, corn straw, wheat straw, soybean straw, rice husk, and peanut shell; the soil mesh is 6-20 mesh; the cooking time in a high-temperatur...
Embodiment 1
[0038] (1) Extraction and purification of lignocellulosic base: First, select corn stalks for mechanical crushing, then sieve through a 6-mesh soil sieve, soak the sieved solid particles in lye for 24 hours, and then cook in a high-temperature pressure cooker at 160°C for 1.0 hours , cooled to room temperature, collecting the filtrate and adding an acidic solution dropwise to adjust the pH to 3, filtering after the solids are completely precipitated, washing the filter residue with acidic solution, washing with distilled water several times, and drying to obtain the lignocellulosic-based material.
[0039] (2) Lysine modification of lignocellulosic base: react lignocellulosic base, formaldehyde, and lysine in a mass ratio of 3:3.0:2.0, and add 1.5 g of lignocellulose base and 15 ml of distilled water into a beaker After stirring evenly, add lye dropwise to adjust the pH of the solution to 9, move the mixed solution to a three-necked flask, then add 1.0 g of lysine and 1.5 g of ...
Embodiment 2
[0043] (1) Extraction and purification of lignocellulosic base: First, select soybean straws for mechanical crushing, then sieve through a 10-mesh soil sieve, soak the sieved solid particles in lye for 24 hours, and then cook them in a high-temperature pressure cooker at 175°C for 2 hours , cooled to room temperature, collecting the filtrate and adding an acidic solution dropwise to adjust the pH to 3, filtering after the solids are completely precipitated, washing the filter residue with acidic solution, washing with distilled water several times, and drying to obtain the lignocellulosic-based material.
[0044] (2) Lysine modification of lignocellulosic base: react lignocellulosic base, formaldehyde and arginine in a mass ratio of 3:6.0:8.0, add 1.5g of lignocellulosic base and 15ml of distilled water in a beaker After stirring evenly, add lye dropwise to adjust the pH of the solution to 10, move the mixed solution to a three-necked flask, then add 4.0 g of arginine and 3.0 g...
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