Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of nitrified modified biochar fertilizer

A biochar modification technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of adsorption performance and stability limitations, cost and labor increase, and less microporous structure, and achieve far-reaching social significance and economic value , Improve climate change, increase soil organic matter effect

Inactive Publication Date: 2017-11-03
黄名义
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its raw materials and preparation methods, traditional biochar has less microporous structure and smaller specific surface area, and its adsorption performance and stability are greatly limited; moreover, the nitrogen, phosphorus, and potassium of traditional biochar The content of plant nutrient elements and other trace elements is extremely low, and other fertilizers are often needed to enhance fertilizer efficiency during application, resulting in increased costs and labor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing nitrified modified biochar fertilizer, the steps are as follows:

[0039] (1) Selection and preparation of biomass raw materials

[0040] The corn stalks are sun-dried or dried, crushed into powder, and mixed evenly. The water content of the corn stalks is controlled below 8%; (2) Selection and preparation of human and animal manure

[0041] Dry or dry human and animal manure, pulverize it into powder, and mix it evenly. The water content of human and animal manure is controlled below 16%;

[0042] (3) Weigh and mix

[0043] The corn stalks, human and livestock manure and catalyst after treatment in steps (1) and (2) are weighed and mixed according to a mass ratio of 3:2:1. The catalyst is the ash obtained after burning cypress trees and is adjusted with ammonia water. PH to 8.2, then filter, use 0.45μm filter membrane, freeze-dry the obtained substance;

[0044] (4) Dehydration and deoxygenation: Put the mixture obtained in step (3) into the pyrolysis mate...

Embodiment 2

[0050] A method for preparing nitrified modified biochar fertilizer, the steps are as follows:

[0051] (1) Selection and preparation of biomass raw materials

[0052] The wheat straw is sun-dried or dried, crushed into powder, and mixed evenly. The water content of the wheat straw is controlled below 6%; (2) Selection and preparation of human and animal manure

[0053] Dry or dry human and animal feces, crush them into powder, and mix them evenly. The water content of human and animal feces is controlled below 15%;

[0054] (3) Weigh and mix

[0055] The wheat straw, human and livestock manure and the catalyst treated in steps (1) and (2) are weighed and mixed at a mass ratio of 3:2:1. The catalyst is the ash obtained after burning cypress trees and is adjusted with ammonia water. PH to 8.2, then filter, use 0.45μm filter membrane, freeze-dry the obtained substance;

[0056] (4) Dehydration and deoxygenation: Put the mixture obtained in step (3) into the pyrolysis material silo with a ...

Embodiment 3

[0062] A method for preparing nitrified modified biochar fertilizer, the steps are as follows:

[0063] (1) Selection and preparation of biomass raw materials: the wood chips are sun-dried or dried, crushed into powder, and mixed evenly. The water content of the wood chips is controlled below 9%;

[0064] (2) Selection and preparation of human and animal manure: drying or drying human and animal manure, crushing it into powder, and mixing, among which, the water content of human and animal manure is controlled below 18%;

[0065] (3) Weighing and mixing: the wood chips, human and animal feces and the catalyst treated in steps (1) and (2) are weighed and mixed in a mass ratio of 3:2:1, where the catalyst is the plant ash obtained after burning cypress After dissolving in water, adjust the pH to 8.2 with ammonia water, and then filter. Use a 0.45μm filter membrane to freeze-dry the obtained substance;

[0066] (4) Dehydration and deoxygenation: Put the mixture obtained in step (3) into ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
water contentaaaaaaaaaa
water contentaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a nitrified modified biochar fertilizer. The preparation method comprises: (1) respectively drying a biomass raw material and human-livestock manure in the sun or baking the material, and crushing into powder; (2) weighing and mixing the treated biomass raw material, the treated human-livestock manure and a catalyst according to a mass ratio of 3:2:1; (3) carrying out dewatering and oxygen discharging; (4) carrying out cracking carbonization; (5) adding the mixed liquid of concentrated sulfuric acid and concentrated nitric acid to a biochar fertilizer, and carrying out nitrification treatment to obtain a nitrified biochar fertilizer; and (6) adding water and stannous chloride to the nitrified biochar fertilizer, and carrying out heating reflux treatment to obtain the nitrified modified biochar fertilizer. According to the present invention, the preparation method is simple; the prepared nitrified modified biochar fertilizer has the substantially improved heavy metal ion adsorption performance, can be recycled through the desorption regeneration after the adsorption, and has the high fertilizer efficiency; and after the application of the nitrified modified biochar fertilizer in the soil, the soil structure can be improved, and the nitrified modified biochar fertilizer can be used as the fertilizer so as to well meet the requirements of the growth of crops.

Description

Technical field [0001] The invention relates to the field of high-value comprehensive utilization of biomass resources and environmental pollution treatment, and in particular to a method for preparing nitrified modified biological carbon fertilizer. Background technique [0002] Whether in the field of food crops or cash crops, fertilization has long been used to improve crop yield and quality. From the earliest application of farmhouse organic fertilizer to the application of inorganic fertilizer, to the application of organic-inorganic compound fertilizer. The type of fertilization, the amount of fertilization, and the ratio have a great impact on the yield and quality of food crops or cash crops. Although traditional fertilizers, especially organic and inorganic compound fertilizers, have played a good role in increasing crop yields. However, traditional fertilizers have unreasonable ingredients and nutrient distribution ratios, which can hardly restore soil fertility, impr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G1/00C05G3/80
CPCC05G1/00C05G3/80
Inventor 黄名义
Owner 黄名义
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com