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

Preparation method and application method of rice mercury absorption inhibitor

An application method and inhibitor technology, applied in the field of soil remediation, can solve the problems of high ash content, low content of toxic and harmful substances, poor adsorption capacity, etc., and achieve the effects of inhibiting absorption, reducing enrichment, and reducing methyl mercury content

Inactive Publication Date: 2018-06-19
ZHEJIANG FORESTRY UNIVERSITY
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high lignin and cellulose content of plant waste itself and the low content of toxic and harmful substances, the charcoal products produced by vegetation have high ash content and slightly poor adsorption capacity.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application method of rice mercury absorption inhibitor
  • Preparation method and application method of rice mercury absorption inhibitor
  • Preparation method and application method of rice mercury absorption inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of rice mercury absorption inhibitor, including biochar, the preparation method of biochar is that under the condition of flowing nitrogen, the raw material of biochar is pyrolyzed and carbonized in a pyrolysis carbonization furnace, taken out after cooling, and stored in a dry In the container, the pyrolysis temperature is 600°C, and the pyrolysis time is 1h.

[0038] The raw material of biochar is cow dung, and the obtained biochar is cow dung charcoal.

Embodiment 2

[0040] A preparation method of rice mercury absorption inhibitor, including biochar, the preparation method of biochar is that under the condition of flowing nitrogen, the raw material of biochar is pyrolyzed and carbonized in a pyrolysis carbonization furnace, taken out after cooling, and stored in a dry In the container, the pyrolysis temperature is 600°C, and the pyrolysis time is 1h.

[0041] The raw material of biochar is sheep manure, and the obtained biochar is sheep manure charcoal.

Embodiment 3

[0043] A preparation method of rice mercury absorption inhibitor, including biochar, the preparation method of biochar is that under the condition of flowing nitrogen, the raw material of biochar is pyrolyzed and carbonized in a pyrolysis carbonization furnace, taken out after cooling, and stored in a dry In the container, the pyrolysis temperature is 600°C, and the pyrolysis time is 1h.

[0044] The raw material of biochar is municipal sludge, and the obtained biochar is sludge charcoal.

[0045] The biochar that embodiment 1-3 obtains carries out physical and chemical characteristic analysis by Fourier transform infrared spectroscopy (FTIR). Depend on figure 1 It can be seen that the positions of the characteristic absorption peaks of the oxygen-containing functional groups of the biochar obtained in Examples 1-3 are basically the same, indicating that the types of surface groups are roughly the same, but there are differences in the peak intensity of the characteristic abs...

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of soil restoration, and discloses a preparation method of a rice mercury absorption inhibitor. The rice mercury absorption inhibitor comprises biomass charcoal; a preparation method of the biomass charcoal comprises the following steps: pyrolyzing and carbonating a biomass charcoal raw material in a pyrocarbonizing furnace under the condition of introducing nitrogen; cooling and then taking out the pyrolyzed and carbonated biomass charcoal raw material, and storing the pyrolyzed and carbonated biomass charcoal raw material in a drying device, wherein the pyrolyzing temperature is 400 to 600 DEG C, and the pyrolyzing time is 1 to 4 hours; the invention also discloses an application method of the rice mercury absorption inhibitor; nitrogen fertilizer, phosphate fertilizer and potassium fertilizer are taken as base fertilizer; the rice mercury absorption inhibitor and the base fertilizer are overturned and buried at the position of 1 to 15 cmfrom a mercury polluted soil plough layer; and after rice is planted, the nitrogen fertilizer is applied in a tillering stage and a heading period. The rice mercury absorption inhibitor disclosed by the invention can absorb methyl mercury and Hg<2+> in the soil, can also reduce the content of active mercury in the mercury polluted soil, can also effectively reduce the enrichment of inorganic mercury in rice, and effectively inhibits the adsorption of the rice to the methyl mercury; and the content of the methyl mercury in rice is reduced by 73 percent.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a preparation method and an application method of a rice mercury absorption inhibitor. Background technique [0002] Mercury is one of the most toxic heavy metal elements. Mercury in the environment has the characteristics of persistence and bioaccumulation, and even low-dose exposure can cause toxicity to organisms. Therefore, mercury pollution has a great negative impact on the ecological environment and human health. [0003] Biochar is a high-carbon solid residue produced by the thermal decomposition of biomass under complete or partial anoxic conditions, low temperature or relatively low temperature (<700°C). Biochar can be used as an effective soil amendment and is widely used in greenhouse gas emission reduction, contaminated soil remediation, and bioavailability regulation. [0004] Traditional soil stabilizers commonly use phosphorus-containing chemicals,...

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): C05G3/04C01B32/05A01C21/00C05G3/80
CPCA01C21/005C05B17/00C05G3/80C05C9/00C05D1/00C05D9/00
Inventor 梁鹏吴胜春张进曹玉成徐振涛
Owner ZHEJIANG FORESTRY UNIVERSITY
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