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Method for extracting potassium humate from vegetable leaves and preparing iron-carbon composite material and application

A technology of potassium humate and composite materials, which is applied in the fields of application, chemical instruments and methods, and organic fertilizers, can solve the problems of underground soil and water pollution in reservoir areas, red mud dust pollution, and secondary pollution of the environment, achieving improved Utilization rate, promotion of nutrient absorption, effect of macromolecule activity

Pending Publication Date: 2022-07-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Red mud wet storage is easy to pollute surface water and groundwater because of its strong alkalinity, and wet storage will cause secondary pollution to the environment once the dam breaks
The red mud stored in dry method is easy to cause dust pollution, and the red mud storage stored in the open air will also pollute the underground soil and water in the storage area due to the leaching effect of rainwater.

Method used

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  • Method for extracting potassium humate from vegetable leaves and preparing iron-carbon composite material and application
  • Method for extracting potassium humate from vegetable leaves and preparing iron-carbon composite material and application
  • Method for extracting potassium humate from vegetable leaves and preparing iron-carbon composite material and application

Examples

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Effect test

Embodiment 1

[0033] The coriander leaves (Chinese cabbage leaves) were dried and crushed, and then passed through a 200-mesh sieve for use. Take 5g of dried coriander leaves (Chinese cabbage leaves) powder samples and put them in a horizontal muffle furnace. 1 After cooling to room temperature, the mass of the roasted sample was weighed, and the content of organic matter in cabbage leaves (Chinese cabbage leaves) was calculated to be 61.79%. ) has the value of extracting potassium humate.

[0034] Take the coriander leaves (Chinese cabbage leaves), weigh them before drying, and place them in an oven. After drying to a constant weight, weigh the mass, measure the water content, and calculate the water content of the coriander leaves (Chinese cabbage leaves) about approx. It is 85.47%, and the high water content indicates that its drying treatment application in the industry will generate higher costs.

[0035] Take 5g of dry tail cabbage leaves (Chinese cabbage leaves) powder for element c...

Embodiment 2

[0043] A method for extracting potassium humate and preparing iron-carbon composite material by utilizing coriander leaves, the specific steps are as follows:

[0044] (1) After the coriander leaves and water are mixed according to the mass-volume ratio g:mL of 1:5, crush them with a juicer, get the vegetable leaf juice and add it to the hydrothermal kettle, and add the KOH solution with a concentration of 1 mol / L evenly Stir, the volume ratio of vegetable leaf juice and KOH solution is 4:1, the mixture is subjected to hydrothermal reaction in the hydrothermal kettle, the reaction temperature in the hydrothermal kettle is 180 ° C, and the reaction time is 3h, after the hydrothermal reactant is cooled Suction filtration and separation to obtain solid residue and separation liquid, use 0.45 μm organic filter membrane for suction filtration, separation liquid is potassium humate solution, add hydrochloric acid to adjust pH value to about 2, stand for 2 hours, and separate to obtai...

Embodiment 3

[0047] A method for extracting potassium humate and preparing iron-carbon composite material by utilizing coriander leaves, the specific steps are as follows:

[0048](1) after the coriander leaves and water are mixed according to the mass volume ratio g:mL of 1:10, crush them with a juicer, get the vegetable leaf juice and add it to the hydrothermal kettle, and add the KOH solution with a concentration of 1 mol / L evenly Stir, the volume ratio of vegetable leaf juice and KOH solution is 5:1, and the mixture is subjected to a hydrothermal reaction in a hydrothermal kettle. The reaction temperature in the hydrothermal kettle is 190 ° C, and the reaction time is 3h. After the hydrothermal reactants are cooled Suction filtration and separation to obtain solid residue and separation liquid, use 0.45 μm organic filter membrane for suction filtration, separation liquid is potassium humate solution, add hydrochloric acid to adjust pH value to about 1.5, stand for 2 hours, and separate ...

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Abstract

The invention discloses a method for extracting potassium humate and preparing an iron-carbon composite material by utilizing rotten vegetable leaves and application, the method comprises the following steps: smashing rotten vegetable leaves and water, juicing, adding a KOH solution, carrying out hydrothermal reaction, carrying out suction filtration and separation to obtain solid residues and a separation liquid, adjusting the pH value of the separation liquid, standing and separating to obtain a precipitate and a filtrate, and drying to obtain the iron-carbon composite material. Collecting the precipitate, drying to constant weight to obtain potassium humate, and collecting and storing the filtrate; the solid residues, red mud, potassium carbonate and the filtrate are mixed and then subjected to ultrasonic dispersion, stirring, drying and roasting, and an iron-carbon composite material is obtained; according to the method, the potassium humate and iron-carbon composite material is produced from the tail vegetable leaves, full-quantitative utilization of the tail vegetable leaves is achieved, a new way for recycling the red mud is provided, compared with the prior art, the cost is low, the waste recycling target of pollution reduction, carbon reduction and synergistic interaction is achieved, the important social value and environmental value are achieved, and the method is worthy of popularization and application. And a new method is provided for solid waste recycling.

Description

technical field [0001] The invention belongs to the technical field of red mud resource utilization of coriander leaves and bulk industrial solid waste, and in particular relates to a method and application for extracting potassium humate from coriander leaves and preparing iron-carbon composite materials. Background technique [0002] With the improvement of people's living standards, grocery shopping in supermarkets has become the living habit of most urban residents, which puts forward higher requirements for the appearance, quality and processing of vegetables, resulting in many vegetables with poor quality being sold Abandoned, resulting in waste of resources and environmental pollution. The content of nutrients in discarded tail vegetables is relatively high, and random storage and disposal will not only cause serious harm to surface water and groundwater, but also traditional incineration methods will also produce fly ash that diffuses into the atmospheric environment...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C05F11/02C05G3/80C02F101/20
CPCB01J20/20B01J20/06B01J20/041B01J20/3078C05F11/02C05G3/80C02F1/283B01J20/08B01J20/103C02F1/281C02F2101/20B01J2220/4887
Inventor 齐佳敏李彬周鹏翔宁平宿新泰陈玉保王紫嫙徐昊樊欣悦
Owner KUNMING UNIV OF SCI & TECH
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