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A method for carbon sequestration in sandy soil in the field

A sandy soil and field technology, applied in the field of sandy soil carbon sequestration in the field, can solve the problem of limited improvement of carbon sequestration capacity per plant, and achieve the effects of increasing field planting yield, carbon sequestration capacity, and fertilizer efficiency

Active Publication Date: 2022-02-01
CROP RES INST SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon sequestration by photosynthesis is mainly based on a large number of afforestation, but due to the influence of the plant's own performance, the improvement of the carbon sequestration capacity of the unit plant is very limited

Method used

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  • A method for carbon sequestration in sandy soil in the field
  • A method for carbon sequestration in sandy soil in the field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The carbon fixation regulator described in this embodiment includes the following components in parts by weight: 30 kg of biogas residue, 30 kg of wood vinegar, 8 kg of bentonite, and 15 kg of seaweed residue.

[0021] The wood vinegar is prepared according to the following steps: using straw crops as raw materials, according to methods known in the prior art, performing oxygen-limited pyrolysis carbonization at 350-550 ° C to produce biomass charcoal, pyrolysis gas spraying, cooling to produce the water-soluble acidic liquid, collect the separated liquid product, which is crude wood vinegar; and filter the obtained crude wood vinegar with walnut shells and diatomaceous earth to remove tar and impurities contained, and obtain refined wood vinegar, After simple distillation, that is.

[0022] The biogas residue is obtained by modifying according to the following steps:

[0023] (1) Take the biogas residue formed by the fermentation of livestock and poultry manure and pu...

Embodiment 2

[0028] The carbon fixation regulator described in this embodiment includes the following components in parts by weight: 50 kg of biogas residue, 20 kg of wood vinegar, 15 kg of bentonite, and 5 kg of seaweed residue.

[0029] Described wood vinegar is identical with embodiment 1.

[0030] The biogas residue is obtained by modifying according to the following steps:

[0031] (1) Take the biogas residue formed by the sludge and pulverize it with a pulverizer and carry out vacuum drying until the moisture content is lower than 10%;

[0032] (2) In a closed container equipped with 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid, control the biogas residue without contacting with the ionic liquid, and the 1-butyl-3 -The addition volume of methylimidazole tetrafluoroborate accounts for 1% of the volume of the reaction vessel;

[0033] (3) The temperature of the reaction vessel is raised to 60°C, and the air is exhausted, and then the vessel is filled with CO 2 Gas, and...

Embodiment 3

[0036] The carbon fixation regulator described in this embodiment includes the following components in parts by weight: 40 kg of biogas residue, 25 kg of wood vinegar, 12 kg of bentonite, and 10 kg of seaweed residue.

[0037] Described wood vinegar is identical with embodiment 1.

[0038] The biogas residue is obtained by modifying according to the following steps:

[0039] (1) Take the biogas residue formed by plant straw fermentation and grind it with a pulverizer and vacuum-dry it until the moisture content is lower than 10%;

[0040] (2) In a closed container filled with 1-ethyl-3-methylimidazolium tetrafluoroborate and 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid (1:1v / v) , controlling the biogas residue not in contact with the ionic liquid, the added volume of the ionic liquid accounts for 0.8% of the volume of the reaction vessel;

[0041] (3) The temperature of the reaction vessel is raised to 50°C, and the air is exhausted, and then the vessel is fill...

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Abstract

The invention belongs to the technical field of ecological soil treatment, and in particular relates to a method for sequestering carbon in sandy soil in the field. The carbon fixation method for sandy soil in the field of the present invention effectively improves the carbon fixation capacity of the sandy soil by mixing the carbon fixation regulator with the sandy soil, helps to improve the fertilizer efficiency, and effectively increases the planting yield. And the carbon fixation regulator of the present invention, with biogas residue, wood vinegar, bentonite, seaweed slag as raw material, especially utilizes CO 2 The supercritical fluid carries ionic liquid to modify the biogas residue, which effectively improves the carbon sequestration performance of the biogas residue, returns the biogas residue to the field, and improves the waste utilization rate; and each raw material also has good nutrients. It helps to increase the yield of field planting.

Description

technical field [0001] The invention belongs to the technical field of ecological soil treatment, and in particular relates to a method for sequestering carbon in sandy soil in the field. Background technique [0002] Global warming caused by the greenhouse effect has become the focus of human attention, and the carbon cycle of terrestrial ecosystems is the key to the study of global climate change. According to research, the soil carbon pool is 3.3 times that of the atmospheric carbon pool and 4.5 times that of the biological carbon pool, making it the largest carbon pool in the terrestrial ecosystem, and the soil organic carbon pool accounts for more than half of the soil carbon pool. The soil organic carbon that undergoes active exchange of components accounts for about 2 / 3 of the carbon in terrestrial ecosystems, so small changes in soil organic carbon will greatly moderate or accelerate atmospheric CO 2 concentration and has the potential to alter the global carbon cyc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02C05G3/00C05G3/80
CPCY02P20/54
Inventor 代红翠刘开昌李宗新张慧薛艳芳高英波钱欣刘璐
Owner CROP RES INST SHANDONG ACAD OF AGRI SCI
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