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Environment-friendly snow-melting agent taking acetic acid waste liquid and straw ash as raw materials, and preparation method and application thereof

A technology of snow-melting agent and straw ash, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems of highways, bridges, concrete pavement corrosion damage, pollution of rivers, groundwater, and destruction of ecological environment, etc., to achieve good snow-melting effect and corrosion Less destructive and less potential safety hazards

Pending Publication Date: 2020-04-03
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the excessive use of deicing agents, a large number of green vegetation have died, resulting in serious corrosion and damage to the concrete pavement of roads and bridges.
After the snow mixed with deicing agent melts and seeps into the ground, it will pollute rivers and groundwater and damage the ecological environment.

Method used

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  • Environment-friendly snow-melting agent taking acetic acid waste liquid and straw ash as raw materials, and preparation method and application thereof
  • Environment-friendly snow-melting agent taking acetic acid waste liquid and straw ash as raw materials, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1 Preparation of environmental protection deicing agent with acetic acid waste liquid and straw ash as raw materials

[0022] 1. Pretreatment of acetic acid waste liquid:

[0023] The acetic acid waste liquid is diluted, and the dilution factor is 10.

[0024] 2. Straw ash pretreatment:

[0025] The temperature of the oven was set at 200°C, and the wheat straw ash was dried in the oven for 30 minutes, and then the dried wheat straw ash was filtered through a 50-mesh sieve.

[0026] 3. Preparation of environmentally friendly deicing agent with acetic acid waste liquid and straw ash as raw materials:

[0027] 1) Add the dried wheat straw ash to the diluted acetic acid waste liquid, the mass ratio of wheat straw ash to acetic acid waste liquid is 1:10;

[0028] 2) The mixture was heated in a water bath at 85°C for 75 minutes, stirred mechanically, and the insoluble matter was removed by suction filtration after the reaction;

[0029] 3) The obtained light ye...

Embodiment 2

[0030] Example 2 Determination of performance of an environmentally friendly deicing agent using acetic acid waste liquid and straw ash as raw materials

[0031] 1. pH of deicing agent

[0032] The pH value is an important indicator of the environmental protection performance of the deicing agent. If the pH is too high or too low, it will have a significant impact on the ecological environment. It is generally required to be neutral or weakly alkaline. Weigh 1.00g of environmentally friendly deicing agent, put it in a 500mL beaker, add 5mL of ethanol to moisten it, then add 100mL of carbon dioxide-free water, stir and dissolve, directly pipette 100mL of liquid sample, and measure the pH value of the deicing agent with a precision pH meter. Continue to weigh and add to measure the pH value of the deicing agent at different concentrations.

[0033] Dissolve the prepared snow-melting agent in distilled water and configure different mass concentrations, that is, the content of th...

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Abstract

The invention relates to an environment-friendly snow-melting agent taking acetic acid waste liquid and straw ash as raw materials, and a preparation method and an application thereof, and belongs tothe technical field of snow-melting agents. The preparation of the environment-friendly snow-melting agent relates to wheat straw ash, acetic acid waste liquid and the like. The preparation method comprises the steps: adding diluted acetic acid waste liquid into dry wheat straw ash, wherein the mass ratio of the wheat straw ash to the acetic acid waste liquid is 1:10; heating in a water bath at the temperature of 85 DEG C for 75 min, mechanically stirring, carrying out suction filtration to remove insoluble substances after the reaction is finished, crystallizing the obtained pale yellow solution by using a rotary evaporator, dissolving in distilled water, and adsorbing by activated carbon to finally obtain the snow-melting agent solid. The acetate environment-friendly snow-melting agent is prepared by mixing a large amount of acetic acid, hydroxyacetone and acetaldehyde generated by wheat straw thermal cracking liquefaction with the acetic acid waste liquid. The environment-friendly snow-melting agent has the advantages of cheap and accessible raw materials, favorable snow-melting effect, no pollution and low corrosivity.

Description

technical field [0001] The invention belongs to the technical field of snow-melting agents, and in particular relates to an environmentally friendly snow-melting agent using acetic acid waste liquid and straw ash as raw materials and its preparation method and application. Background technique [0002] Snow melting agent, also known as deicing salt and road antifreeze, is mainly used in winter airports, highways, squares, parking lots, railways, urban streets, etc. to remove snow and prevent freezing. Its ingredients are sodium chloride, calcium chloride, magnesium chloride, etc. Salt-based. Due to the advantages of convenient use and moderate price, deicing agents are not only widely used in large cities, but also gradually tend to be used in large quantities in many small and medium-sized cities. However, due to the excessive use of deicing agents, a large number of green vegetation died, resulting in severe corrosion damage to the concrete pavement of roads and bridges. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
CPCC09K3/185
Inventor 包红旭宋泽斌徐晓红巨成文胡家伟李泽刘洪源隋然
Owner LIAONING UNIVERSITY