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Fertilizer for phthalate polluted soil

A technology of phthalates and polluted soil, applied in the field of fertilizers, can solve problems such as difficulty in achieving removal effect, long cycle, etc., and achieve the effects of enriching nutrition, promoting growth, and achieving remarkable effects

Inactive Publication Date: 2017-03-08
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microbial remediation involves the screening of highly efficient degrading bacteria and inoculating such strains in PAEs-contaminated soil. The technical cycle is relatively long, and the degrading bacteria are affected by many environmental factors after being inoculated into the soil, so it is difficult to achieve removal in the laboratory. Effect

Method used

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  • Fertilizer for phthalate polluted soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A fertilizer for phthalate-contaminated soil is characterized in that it consists of the following raw materials in parts by weight: urea 35kg, sodium nitrate 25kg, potassium sulfate 20kg, potassium dihydrogen phosphate 15kg, urea phosphate 25kg, nitric acid Calcium 10kg, calcium chloride 10kg, sodium carbonate 12kg, gypsum 7kg, sodium selenite 5kg, zinc sulfate 2kg, ammonium molybdate 3kg, modified traditional Chinese medicine slag 15kg, modified iron manganese oxide 25kg, modified activated carbon 25kg.

[0022] The modified traditional Chinese medicine dregs are dried, crushed through a 20-mesh sieve, added oxalic acid, stirred with a magnetic stirrer for 1 h in a constant temperature water bath at 65°C, added 0.25 mol / L sodium hydroxide, and adjusted the pH to 7. Filter, mix with fly ash of 0.4 times the quality of traditional Chinese medicine slag, and ultrasonically treat it for 8 minutes at a frequency of 50KHz to obtain a mixture, mix it with sodium lauryl sulfat...

Embodiment 2

[0031] A fertilizer for phthalate-contaminated soil is characterized in that it consists of the following raw materials in parts by weight: urea 45kg, sodium nitrate 30kg, potassium sulfate 40kg, potassium dihydrogen phosphate 25kg, urea phosphate 30kg, nitric acid Calcium 15kg, calcium chloride 15kg, sodium carbonate 18kg, gypsum 13kg, sodium selenite 10kg, zinc sulfate 6kg, ammonium molybdate 5kg, modified traditional Chinese medicine slag 20kg, modified iron manganese oxide 30kg, modified activated carbon 30kg.

[0032] The modified Chinese medicine dregs are dried, crushed through a 40-mesh sieve, added oxalic acid, stirred with a magnetic stirrer for 1.5 hours in a constant temperature water bath at 70°C, added 0.35mol / L sodium hydroxide, and adjusted the pH 7, filtered, mixed with fly ash 0.45 times the mass of traditional Chinese medicine residue, ultrasonically treated at a frequency of 60KHz for 12min to obtain a mixture, mixed with sodium lauryl sulfate and water at a...

Embodiment 3

[0041] A fertilizer for phthalate-contaminated soil is characterized in that it consists of the following raw materials in parts by weight: urea 40kg, sodium nitrate 28kg, potassium sulfate 30kg, potassium dihydrogen phosphate 20kg, urea phosphate 28kg, nitric acid Calcium 13kg, calcium chloride 13kg, sodium carbonate 16kg, gypsum 11kg, sodium selenite 8kg, zinc sulfate 4kg, ammonium molybdate 4kg, modified traditional Chinese medicine slag 18kg, modified iron manganese oxide 28kg, modified activated carbon 28kg.

[0042] The modified Chinese medicine dregs are dried, crushed through a 30-mesh sieve, added oxalic acid, stirred with a magnetic stirrer for 1.3 hours in a constant temperature water bath at 68°C, added 0.3mol / L sodium hydroxide, and adjusted the pH 7, filtered, mixed with fly ash 0.43 times the mass of traditional Chinese medicine residue, ultrasonically treated at a frequency of 55KHz for 10 minutes to obtain a mixture, mixed with sodium lauryl sulfate and water a...

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Abstract

The invention relates to the technical field of fertilizer, and particularly relates to fertilizer for phthalate polluted soil. The fertilizer is prepared from the following raw materials in parts by weight: 35-45 parts of urea, 25-30 parts of sodium nitrate, 20-40 parts of potassium sulfate, 15-25 parts of monopotassium phosphate, 25-30 parts of urea phosphate, 10-15 parts of calcium nitrate, 10-15 parts of calcium chloride, 12-18 parts of sodium carbonate, 7-13 parts of gypsum, 5-10 parts of sodium selenite, 2-6 parts of zinc sulfate, 3-5 parts of ammonium molybdate, 15-20 parts of modified traditional Chinese medicine residues, 25-30 parts of modified iron and manganese oxides and 25-30 parts of modified activated carbon. The fertilizer is rich in nutrition, contains multiple macroelements and micronutrient elements essential to crops, has total nutrient of nitrogen, phosphorus and potassium of more than and equal to 59.5 percent, and is rich in multiple nutrient elements. The fertilizer has a removal rate of di(2-ethylhexyl) phthalate in soil of over 97.4 percent and a removal rate of dibutyl phthalate in soil of 97.6 percent or over with remarkable effect, and can be used for increasing the yield of rice, for instance, by 13.1-13.9 percent, so that double benefits of increasing yield and removing organic matters can be achieved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a fertilizer used for phthalate-contaminated soil. Background technique [0002] Phthalates, PAEs, also known as phthalates, commonly known as plasticizers, are an important class of organic compounds, they are widely used as plastic plasticizers, pesticide carriers, insect repellents, clothing, cosmetics, lubricants Raw materials for the production of agents, etc. Among them, plastic plasticizers are used in the largest amount, accounting for about 80% of its total output. PAEs are also a class of environmental endocrine disruptors, some of which have reproductive and developmental toxicity, liver toxicity, potential carcinogenicity and bioaccumulation effects. Among them, 6 PAEs compounds are listed as "excellent" by China Environmental Monitoring Center, the US Environmental Protection Agency and the European Union. pollution control". In recent years, with the extensiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/00C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05B15/00C05C3/00C05C5/02C05C5/04C05C9/00C05D1/02C05D3/00C05D9/00C05D9/02C05F11/00
Inventor 陈肖虎鲁圣军赵平原黎志英刘利金会心
Owner GUIZHOU UNIV
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