Slow-release material taking traditional Chinese medicine waste as raw material, slow-release fertilizer and preparation method thereof
A slow-release material and waste technology, which is applied to fertilizers, nitrogen fertilizers, and phosphate fertilizers made from biological wastes, can solve problems such as economic losses, low fertilizer utilization rates, and environmental pollution, and achieve improved water holding capacity, product savings, and cost reduction effect
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[0047] The preparation method of the sustained-release material using traditional Chinese medicine waste as raw material comprises the following steps:
[0048] (1) Traditional Chinese medicine waste refers to roots and / or stems and / or bark and / or seeds and / or fruits of traditional Chinese medicines, scraps generated during processing and processing, residues after extracting active ingredients, and extracted active ingredients One or more of the ineffective components produced during the purification process, after drying and pulverizing the Chinese medicine waste, passing through a 100-200 mesh sieve after the Chinese medicine waste is pulverized, take 4-10 parts, add 20-60% of the Chinese medicine waste double the amount of water, stir at 50-90°C for 0.5-1h;
[0049] (2) Add acrylic acid 4-20 times the amount of traditional Chinese medicine waste to the system obtained in step (1), and neutralize it to 65-80% with potassium hydroxide;
[0050] (3) Add loess with 10-80% of ...
Embodiment 1
[0063] (1) Dry the medicinal residues extracted from licorice, crush them, pass through a 180-mesh sieve, take 4 g and add 80 mL of distilled water to stir at 80 ° C for 0.5 h, then add 16 mL of acrylic acid to the system, and neutralize with potassium hydroxide until neutralized 70%; then add 0.4g of loess, 0.004 parts of N, N´ -Methylenebisallylamine, stirred for 30 minutes, then added 0.012g of potassium persulfate, stirred at 85°C for 100 minutes to obtain a multifunctional polymer product that can save water and fertilizer, wash, dry, and crush through a 100-mesh sieve to obtain Glycyrrhiza waste residue-based water-saving and fertilizer-retaining agent slow-release material;
[0064] (2) 40g of licorice residue, 50g of urea, 20g of zinc sulfate, 20g of diammonium hydrogen phosphate, 15g of sodium carboxymethyl cellulose, 30g of loess as raw materials, 2% aqueous solution of sodium alginate as binder, and granulated by disc The machine granulates under the conditions of ...
Embodiment 2
[0069] (1) Dried the medicinal dregs extracted from Lycium barbarum, crushed them, passed through a 180-mesh sieve, took 7g and added 280mL of distilled water, stirred at 80°C for 40min, then added 84mL of acrylic acid to the system, and neutralized it with potassium hydroxide to the neutralization degree 70%; then add 3.15g of loess, 0.074 parts of N, N´ -Methylenebisallylamine, stirred for 30 minutes, then added 0.151g of potassium persulfate, stirred at 85°C for 200 minutes to obtain a multifunctional polymer product that can save water and fertilizer, wash, dry, and crush through a 100-mesh sieve to obtain Lycium barbarum waste residue-based water-saving and fertilizer-preserving agent slow-release material;
[0070] (2) 50g of wolfberry medicinal residue, 70g of urea, 15g of zinc sulfate, 20g of ammonium molybdate, 25g of diammonium hydrogen phosphate, 20g of sodium carboxymethylcellulose, 40g of loess as raw materials, 4% aqueous solution of sodium alginate as binder, U...
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