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Preparation method and application of a kind of alkali-melted fly ash modified pig manure biochar

A technology of fly ash and biochar, applied in the direction of chemical instruments and methods, water pollutants, and other chemical processes, can solve the problems of reducing the types and quantities of environmental microorganisms, being expensive, and restricting the popularization and application of composite materials

Active Publication Date: 2021-04-27
JIAYING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these composite materials are often expensive, the particles are too small and easy to agglomerate, and have certain toxicity, which will reduce the types and quantities of environmental microorganisms. These shortcomings limit the popularization and application of these composite materials.

Method used

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  • Preparation method and application of a kind of alkali-melted fly ash modified pig manure biochar
  • Preparation method and application of a kind of alkali-melted fly ash modified pig manure biochar
  • Preparation method and application of a kind of alkali-melted fly ash modified pig manure biochar

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preparation example Construction

[0032] A kind of preparation method of alkali-melted fly ash modified pig manure biochar of the present invention comprises the steps:

[0033] 1) Preparation of raw materials: collect coal-fired power plant fly ash and farmland pig manure with a particle size of less than 0.045mm, and dry the fly ash at 100-110°C; dry the pig manure at 90-100°C, and then Crush until the particle size is less than 1.00mm.

[0034] Among them, the chemical composition of coal-fired power plant fly ash is shown in Table 1.

[0035] Table 1 Chemical composition (mass fraction) of fly ash Unit: %

[0036] SiO 2

al 2 o 3

Fe 2 o 3

CaO TiO 2

other 56.74 24.59 6.55 4.87 1.87 5.38

[0037]2) Preparation of alkali-melted fly ash: mix the fly ash and sodium hydroxide obtained in step 1) at a mass ratio of 1:1 to 1.5, mix them evenly, and roast them at a temperature of 600 to 700°C for 0.5 to 2 hours , The roasted product is crushed until the particl...

Embodiment 1

[0042] Dry the fly ash collected in the power plant at 105°C, mix the dried fly ash and sodium hydroxide at a mass ratio of 1:1.2, put it into a corundum crucible, and use a muffle furnace at 650 After calcination at ℃ for 1 hour, take it out after cooling in the furnace, and after crushing, the particle size is less than 1.00mm to obtain alkali-melted fly ash. The farmland pig manure is dried at 95°C, and the particle size of the pig manure after crushing is less than 1.00mm. Mix the dried and pulverized pig manure with the alkali-melted fly ash at a mass ratio of 10:3, that is, the added mass of the alkali-melted fly ash is 30% of the pig manure mass, and then add deionized water into the mixture, The mass volume ratio of the mixture to deionized water is 1:10g / ml, shaken for 9 hours, dried at 95°C, and pulverized to a particle size of less than 1.00mm.

[0043] Put the mixture of dried pig manure and alkali-melted fly ash in a corundum crucible, close the lid of the crucib...

Embodiment 2

[0046] Dry the fly ash collected in the power plant at 100°C, mix the dried fly ash and sodium hydroxide at a mass ratio of 1:1, put it into a corundum crucible, and use a muffle furnace at 600 After roasting at ℃ for 2 hours, take it out after cooling in the furnace, and after crushing, the particle size is less than 1.00mm to obtain alkali-melted fly ash. The farmland pig manure is dried at 90°C, and the particle size of the pig manure after crushing is less than 1.00mm. Mix the dried and pulverized pig manure with alkali-melted fly ash at a mass ratio of 10:1, that is, the added mass of alkali-melted fly ash is 10% of the mass of pig manure, and then add a certain amount of detoxified coal to the mixture. Ionized water, the mass volume ratio of the mixture to deionized water is 1:10g / ml, shake for 8 hours, then dry at 90°C, and pulverize until the particle size is less than 1.00mm.

[0047] Put the dried pig manure and alkali-melted fly ash mixture in a corundum crucible, ...

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Abstract

The invention discloses a preparation method and application of alkali-melting fly ash modified pig manure biochar, and belongs to the technical field of biological environmental protection, comprising the following steps: 1) preparation of raw materials: collecting power plant fly ash and farmland pigs 2) the fly ash obtained in step 1) is mixed with sodium hydroxide and then roasted to obtain alkali-fused fly ash; 3) the alkali-fused fly ash obtained in step 2) is obtained ash is added to the pig manure obtained in step 1), then deionized water is added, shaken, shaken, dried and pulverized to obtain a mixture of pig manure and alkali-fused fly ash; 4) the pig manure obtained in step 3) is obtained It is mixed with alkali-fused fly ash, pyrolyzed and pulverized to obtain alkali-fused fly ash modified pig manure biochar; the preparation raw material of the present invention is industrial and agricultural waste, which is cheap and easy to obtain, the preparation method is simple, and the production cost is low. The removal rate of pollutants is high, the adsorption capacity is large, and there is no secondary pollution to the environment, which is conducive to the control and governance of environmental pollution.

Description

technical field [0001] The present invention relates to a kind of preparation method of modified biochar, more specifically, relate to a kind of preparation method of alkali melting fly ash modified pig manure biochar. The present invention also relates to the application of the modified biochar. Background technique [0002] The discharge of printing and dyeing wastewater is very large. According to European statistics, the weight ratio of fabric and discharged wastewater is 1:150-1:200, and it is about 1:200-1:400 in my country. my country's textile industry wastewater ranks sixth in the country's industrial wastewater discharge, of which 80% is printing and dyeing wastewater. There are many treatment methods for printing and dyeing wastewater, mainly including adsorption, oxidation, membrane separation, flocculation, biodegradation and so on. Adsorption has a special status in the field of wastewater treatment because of its ability to selectively enrich certain compoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20C02F1/28B01J20/30C02F101/30
CPCB01J20/20B01J2220/4887C02F1/283C02F2101/308
Inventor 王开峰彭娜陈海斌李虹雅涂常青张丰如何江曾远娴温丙奎
Owner JIAYING UNIV
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