Peanut shell biochar composite hydrogel and application thereof in tobacco planting

A technology of composite hydrogel and peanut shell, which can be used in application, tobacco cultivation, planting substrate, etc., can solve problems such as unknown effect and human health risk, and achieve timely closure of stomata, reduction of toxic effects, and improvement of tobacco leaf surface. type effect

Active Publication Date: 2020-12-22
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Tobacco is an important economic crop and model crop, however, it is more adaptable than other crops to absorb cadmium and can easily pose risks to human health through inhalation of smoke from cigarettes
[0004] Hydrogel is a cross-linked polymer with a network structure and hydrophilic groups, which enables it to absorb a large amount of water without dissolving, thanks to its three-dimensional network structure and various functional groups, hydrogel has become a Effective adsorbents for heavy metal ions in wastewater, however, current hydrogel materials have not been used in the field of tobacco cultivation, and their effectiveness is still unknown

Method used

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  • Peanut shell biochar composite hydrogel and application thereof in tobacco planting
  • Peanut shell biochar composite hydrogel and application thereof in tobacco planting
  • Peanut shell biochar composite hydrogel and application thereof in tobacco planting

Examples

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Effect test

Embodiment 1

[0042] Example 1: The peanut shell biochar composite hydrogel provided in this example, the composite hydrogel includes peanut shell biochar (B), acrylamide (AM), carboxymethyl cellulose (CMC), ammonium persulfate (APS) and N,N'-methylenebisacrylamide (MBA), where peanut shell biochar: carboxymethyl cellulose: acrylamide = 4:1:8, where the mass of ammonium persulfate is acrylamide and 1% of the mass sum of carboxymethyl cellulose, and 0.5% of the mass sum of acrylamide and carboxymethyl cellulose in the mass of N,N'-methylenebisacrylamide.

[0043] Preparation:

[0044] The first step is to cut the washed and naturally air-dried peanut shells into small pieces of about 2cm and crush them through a 2mm sieve with a grinder, then put the crushed peanut shells in a muffle furnace, and pyrolyze them at 450°C for 3 hours to obtain peanut shell organisms charcoal, after the reaction, close the muffle furnace and wait for the pyrolysis gas to cool down to room temperature, take out ...

Embodiment 2

[0047]Example 2: The peanut shell biochar composite hydrogel provided in this example, the composite hydrogel includes peanut shell biochar (B), acrylamide (AM), carboxymethyl cellulose (CMC), ammonium persulfate (APS) and N,N'-methylenebisacrylamide (MBA), where peanut shell biochar: carboxymethyl cellulose: acrylamide = 3:1:6, where the mass of ammonium persulfate is acrylamide and The mass sum of carboxymethyl cellulose is 0.5%, and the mass of N,N'-methylenebisacrylamide is 0.3% of the mass sum of acrylamide and carboxymethyl cellulose.

[0048] Preparation:

[0049] The first step is to cut the washed and naturally air-dried peanut shells into small pieces of about 2cm and crush them through a 2mm sieve with a pulverizer, then put the crushed peanut shells in a muffle furnace, and pyrolyze them at 420°C for 4 hours to obtain peanut shell organisms charcoal, after the reaction, close the muffle furnace and wait for the pyrolysis gas to cool down to room temperature, take ...

Embodiment 3

[0052] Example 3: The peanut shell biochar composite hydrogel provided in this example, the composite hydrogel includes peanut shell biochar (B), acrylamide (AM), carboxymethyl cellulose (CMC), ammonium persulfate (APS) and N,N'-methylenebisacrylamide (MBA), where peanut shell biochar: carboxymethyl cellulose: acrylamide = 5:1:10, where the mass of ammonium persulfate is acrylamide and The mass sum of carboxymethyl cellulose is 1.5%, and the mass of N,N'-methylenebisacrylamide is 0.8% of the mass sum of acrylamide and carboxymethyl cellulose.

[0053] Preparation:

[0054] The first step is to cut the washed and naturally air-dried peanut shells into small pieces of about 2cm and crush them through a 2mm sieve with a grinder, then place the crushed peanut shells in a muffle furnace, and pyrolyze them at 480°C for 2 hours to obtain peanut shell organisms charcoal, after the reaction, close the muffle furnace and wait for the pyrolysis gas to cool down to room temperature, take...

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Abstract

The invention belongs to the technical field of composite hydrogel materials, and particularly relates to peanut shell biochar composite hydrogel and application thereof in tobacco planting. The composite hydrogel is prepared by taking acrylamide, carboxymethyl cellulose and peanut shell biochar prepared by pyrolysis as raw materials, taking ammonium persulfate as an initiator, taking N,N'-methylene bisacrylamide as a cross-linking agent, and conducting heating in an aqueous solution for cross-linking polymerization reaction. The composite hydrogel has strong water absorption and water retention properties, can adsorb cadmium in soil in tobacco planting, alleviates the toxic action of tobacco seedlings under Cd stress, improves the SPAD value of the tobacco seedlings, enhances the oxidation resistance and stress resistance of the tobacco seedlings, and promotes the growth and development of the tobacco seedlings.

Description

technical field [0001] The invention belongs to the technical field of composite hydrogel materials, and in particular relates to a peanut shell biochar composite hydrogel and its application in tobacco planting. Background technique [0002] Cadmium (Cd) is one of the most common and most toxic heavy metal pollutants in soil, and it is also recognized as one of the most harmful metal pollutants to humans, animals and plants. Cd mainly enters the environment through industrial processing and phosphate fertilizers, and can accumulate through crops and eventually transfer to the food chain. Humans enter the human body by eating cadmium-contaminated animals and plants, causing serious damage to the kidneys and bones. Cd stress mainly affects plant growth and physiological and biochemical processes, including root growth, inhibition of nutrient uptake, and inhibition of chlorophyll synthesis for photosynthesis. Reducing plant cadmium pollution is a current research hotspot. ...

Claims

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Application Information

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IPC IPC(8): C08F251/02C08F292/00C08F220/56C08F222/38C08J3/075A01G24/35A01G24/30A01G24/25A01G24/22A01G22/45C08L51/02C08L51/10
CPCA01G22/45A01G24/22A01G24/25A01G24/30A01G24/35C08F251/02C08F292/00C08J3/075C08J2351/02C08J2351/10C08F220/56C08F222/385
Inventor 姬小明杜甫魏跃伟赵华新任天宝云菲张红
Owner HENAN AGRICULTURAL UNIVERSITY
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