CN113617796A - Plant deodorant for garbage deodorization and preparation method and application method thereof - Google Patents

Abstract

The invention discloses a plant deodorant for garbage deodorization, which is prepared from the following raw materials in percentage by mass and volume: 30-50 g/L of lemongrass, 40-60 g/L of yucca, 10-30 g/L of vanillin, 10-20 g/L of citric acid and 20-40 g/L of hydroxypropyl methyl cellulose; the invention provides a plant deodorant for garbage deodorization, a preparation method and an application method thereof, the plant deodorant can loosen and break plant cell walls through complex enzyme enzymolysis, is beneficial to dissociating effective compounds in cells, does not damage the structure of effective substances, improves the extraction efficiency by more than 30 percent compared with the common steam distillation method, shortens the high-temperature cooking time, has milder extraction environment and reduces the production cost.

Description

Plant deodorant for garbage deodorization and preparation method and application method thereof

Technical Field

The invention relates to the technical field of environmental protection, in particular to a plant deodorant for garbage deodorization, a preparation method and an application method thereof.

Background

Deodorants for malodors in the environment currently used in the market are mainly classified into chemical deodorants, physical adsorbents, biological deodorants, masking deodorants, plant deodorants, and the like.

The chemical deodorant deodorization is to change odor molecules into odorless substances through chemical reaction by contacting the odor molecules in the air through a negative pressure washing tower, and the aim of deodorization is achieved.

The physical adsorption deodorant is characterized in that odor is extracted from a negative pressure tower and passes through porous adsorption materials such as active carbon, zeolite and certain metal oxides, and is deodorized through the physical adsorption effect.

The biological deodorant is a new deodorant which is prepared by dissolving odor components into water through spraying or a biological filter and degrading odor through the metabolism of microorganisms, so that the aim of deodorization is fulfilled.

The masking method deodorant adopts stronger aromatic odor to mask odor, cannot eliminate odor components, and still has harm to the environment and human bodies.

The plant deodorant is prepared by compounding plant extracts with a deodorizing effect, is formed by decomposing odor components into odorless substances through contact of a spraying or negative pressure washing tower and odor in the air, is one of the mainstream of the existing deodorant due to the advantages of environmental protection, no toxicity, no harm and quick effect on the environment and human bodies, but has high extraction difficulty, needs an extracting agent in some plant extraction processes, and has complex process and high production cost.

Disclosure of Invention

In order to solve the technical problems, the invention provides a plant deodorant for garbage deodorization, and a preparation method and an application method thereof.

The technical scheme of the invention is as follows: a plant deodorant for garbage deodorization is prepared from the following raw materials in percentage by mass and volume: comprises 30 to 50g/L of lemongrass, 40 to 60g/L of yucca, 10 to 30g/L of vanillin, 10 to 20g/L of citric acid and 20 to 40g/L of hydroxypropyl methyl cellulose.

A preparation method of a plant deodorant for garbage deodorization comprises the following steps:

step1, drying the lemongrass and yucca in the shade, and then crushing the dried lemongrass and yucca to enable the lemongrass and yucca to pass through a sieve of 80-200 meshes;

step2, taking 30-50 g/L of the above raw materials of lemongrass, 40-60 g/L of yucca and the balance of water according to the mass-volume ratio, placing the raw materials in a fermentation tank, adding acid cellulase (FPA) and acid pectinase to carry out enzymolysis for 60-90 min at the temperature of 45-50 ℃, the pH value of 6-7 and the rotation speed of 200r/min in the fermentation tank, then heating the temperature in the fermentation tank to 80-100 ℃ and preserving the temperature for 1-2 h, finally cooling the liquid in the fermentation tank, and filtering the liquid with a plate frame to obtain a first plant extract;

step3, taking a proper amount of hydroxypropyl methyl cellulose according to the mass-volume ratio of 20g/L to 40g/L (w/v), weighing the hydroxypropyl methyl cellulose and water according to the mass-volume ratio of 1:3, adding the hydroxypropyl methyl cellulose into 65 ℃ water for swelling for 2 hours, and finally mixing, stirring and dissolving the mixture with the first plant extract for 30 minutes to obtain a second plant extract;

step4, adding 10-30 g/L of vanillin and 10-20 g/L of citric acid into the second plant extract, stirring at normal temperature for 30min, and stirring uniformly to obtain the plant deodorant.

Preferably, the first plant extract contains yucca saponin (yucca extraction rate) no less than 0.11mg/ml and citral (lemongrass extraction rate) no less than 0.35 mg/ml.

Preferably, after the acid cellulase (FPA) is added into the Step2, the enzyme activity of the acid cellulase (FPA) in the liquid in the fermentation tank body is 700-1100 u/m1, and after the acid pectinase is added, the enzyme activity of the acid pectinase in the fermentation tank body is 20-40 u/ml.

A method for applying a plant deodorant for deodorizing garbage comprises the following steps:

step1, diluting the plant deodorant by 50-100 times with water;

step2, spraying the diluted plant deodorant on the surface of the garbage at the frequency of spraying for 1min and stopping spraying for 30min by using a timing spraying upright column with the dosage of 20ml per square.

Compared with the prior art, the invention has the following beneficial effects:

1. compared with the prior art, the invention can loosen and break the plant cell wall through the enzymolysis of the complex enzyme, is beneficial to the liberation of effective compounds in the cell, does not damage the structure of effective substances, improves the extraction efficiency by more than 30 percent compared with the common steam distillation method, shortens the high-temperature cooking time, has milder extraction environment and reduces the production cost.

2. The deodorant disclosed by the invention can be sprayed to deodorize odor in air, and the deodorant can fall on the ground to form a layer of covering film on the surface of garbage through hydroxypropyl methyl cellulose gel, so that the deodorant can fully react with odor molecules, and the aim of lasting deodorization is fulfilled.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", and the like, indicate orientations or positional relationships, and are used for convenience of description and simplification of description, but do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Example 1

(1) Drying Cymbopogon citratus and Yucca in the shade, and pulverizing to make them pass through 80 mesh sieve;

(2) taking 40g/L (g/L is expressed as the amount of added raw materials in 1L of water) of the lemongrass according to w/v, adding the raw materials into a fermentation tank according to the corresponding mass ratio according to the actual condition, increasing or reducing the specific amount according to the corresponding mass ratio, and the same below), 50g/L Yucca, and the balance of water, adding acid cellulose (FPA) to ensure that the enzyme activity of acid cellulose (FPA) in the liquid in the fermentation tank is 900u/m1 and adding acid pectinase to ensure that the enzyme activity of acid pectinase in the fermentation tank is 40u/ml, adjusting the specific amounts of acid cellulose (FPA) and acid pectinase according to the actual condition, then carrying out enzymolysis for 60min under the conditions that the temperature in the fermentation tank is 50 ℃, the PH value is 6.5 and the rotating speed is 200r/min, then heating the temperature in the fermentation tank to 80 ℃ and preserving the temperature for 1.5h, finally, cooling the liquid in the fermentation tank and filtering the liquid by using a plate frame to obtain a first plant extracting solution;

the detection shows that the content of yucca saponin in the first plant extract is 0.13mg/ml, the content of citral is 0.46mg/ml, the extraction rate of yucca in the first plant extract is measured by yucca saponin, and the extraction rate of lemongrass is measured by citral.

(3) Taking a proper amount of hydroxypropyl methyl cellulose according to a mass ratio of 30g/L (w/v, which is a mass-volume ratio and is the same as that of g/L), weighing the hydroxypropyl methyl cellulose and water according to a mass ratio of 1:3, adding the hydroxypropyl methyl cellulose into 65 ℃ water to swell for 2 hours, mixing with the first plant extract, stirring and dissolving for 30min to obtain a second plant extract;

(4) and then adding 20g/L of vanillin and 20g/L of citric acid into the second plant extract, stirring at normal temperature for 30min, and stirring uniformly to obtain the plant deodorant.

(5) Diluting the produced plant deodorant by 50 times with water, spraying the plant deodorant on the surface of garbage at the frequency of spraying for 1min and stopping spraying for 30min by using a timing spraying upright column at the dosage of 20ml per square, continuously performing comparison before and after detection and implementation after 5 days, wherein the ammonia gas removal rate is 94.2%, the hydrogen sulfide removal rate is 83%, the methyl mercaptan removal rate is 82%, the concentration of the odor in a garbage site meets the first-level standard of table 1 of the emission standard of malodorous pollutants (GB14554-1993), and the concentration meets the industrial standard.

Example 2

Laboratory enzyme extraction comparative experiment

(1) Weighing 100g of dry lemongrass leaves and 100g of dry yucca leaves, crushing the leaves by a crusher, sieving the leaves by a 80-mesh sieve, weighing 40g of lemongrass sieved powder and 50g of yucca sieved powder, and uniformly mixing the powders for later use;

(2) taking 12 250ml shake flasks, respectively weighing 2.70g of the mixed powder of the lemongrass and the yucca, adding 30ml of distilled water, and dividing into 4 groups with the initial pH of 6.0-6.5;

(3) adding distilled water into group a to make blank, adding 40u/ml acid cellulase 900u/m1 acid pectinase into group b according to volume ratio, adding 40u/ml acid cellulase 700u/m1 acid pectinase into group c, and adding 20u/ml acid cellulase 900u/m1 acid pectinase into group d;

(4) placing 4 groups of samples in a shaking table at 200-220 r/min, performing enzymolysis at 50 ℃ for 60min, placing in a 80 ℃ water bath kettle, preserving heat for 1.5h, centrifuging at 800r/min for 5nin, and taking supernatant; the average content of yucca saponin and citral in each group of samples was determined.

Group of	Yucca saponin (mg/ml)	Citral (mg/ml)
			Group a	0.09	0.30
Group b	0.15	0.48
			Group c	0.11	0.45
Group d	0.13	0.41

The results show that the effect of enzyme extraction is more subtle than that of the sample without enzyme, and the effect is best when the acid cellulase 900u/m1 acid pectinase 40u/ml is added.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A plant deodorant for deodorizing garbage is characterized by being prepared from the following raw materials in mass-volume ratio: comprises 30 to 50g/L of lemongrass, 40 to 60g/L of yucca, 10 to 30g/L of vanillin, 10 to 20g/L of citric acid and 20 to 40g/L of hydroxypropyl methyl cellulose.

2. A preparation method of a plant deodorant for garbage deodorization is characterized by comprising the following steps:

step1, drying the lemongrass and yucca in the shade, and then crushing the dried lemongrass and yucca to enable the lemongrass and yucca to pass through a sieve of 80-200 meshes;

step2, taking 30-50 g/L of the above raw materials of lemongrass, 40-60 g/L of yucca and the balance of water according to the mass-volume ratio, placing the raw materials in a fermentation tank, adding acid cellulase (FPA) and acid pectinase to carry out enzymolysis for 60-90 min at the temperature of 45-50 ℃, the pH value of 6-7 and the rotation speed of 200r/min in the fermentation tank, then heating the temperature in the fermentation tank to 80-100 ℃ and preserving the temperature for 1-2 h, finally cooling the liquid in the fermentation tank, and filtering the liquid with a plate frame to obtain a first plant extract;

step3, taking a proper amount of hydroxypropyl methyl cellulose according to the mass-volume ratio of 20g/L to 40g/L (w/v), weighing the hydroxypropyl methyl cellulose and water according to the mass-volume ratio of 1:3, adding the hydroxypropyl methyl cellulose into 65 ℃ water for swelling for 2 hours, and finally mixing, stirring and dissolving the mixture with the first plant extract for 30 minutes to obtain a second plant extract;

step4, adding 10-30 g/L of vanillin and 10-20 g/L of citric acid into the second plant extract, stirring at normal temperature for 30min, and stirring uniformly to obtain the plant deodorant.

3. The method for preparing a plant deodorant for garbage deodorization according to claim 2, wherein the first plant extract contains yucca saponin (yucca extraction rate) of not less than 0.11mg/ml and citral (lemongrass extraction rate) of not less than 0.35 mg/ml.

4. The method for preparing a plant deodorant for garbage deodorization according to claim 2, wherein the enzyme activity of acid cellulase (FPA) in the liquid in the fermenter tank after the acid cellulase (FPA) is added to Step2 is 700-1100 u/m1, and the enzyme activity of acid pectinase in the fermenter tank after the acid pectinase is added is 20-40 u/ml.

5. An application method of a plant deodorant for garbage deodorization is characterized by comprising the following steps:

step1, diluting the plant deodorant by 50-100 times with water;

step2, spraying the diluted plant deodorant on the surface of the garbage at the frequency of spraying for 1min and stopping spraying for 30min by using a timing spraying upright column with the dosage of 20ml per square.