BR102020003209A2 - COMPOSITION FOR NEUTRALIZATION AND CONTROL OF AMMONIA AND ITS DERIVATIVES AND USE OF THE SAME - Google Patents

Abstract

composition for neutralizing and controlling ammonia and its derivatives and its use. the composition for neutralizing and controlling ammonia and its derivatives according to the invention comprises by weight relative to the total mass of the composition: (a) 0.02% to 20% of solubilizer; (b) 0.01% to 10% of a mixture of salts; (c) 10% to 65% blend of natural preservatives; (d) 1% to 15% alcohol blend; (e) 0.1 to 5% of a rheological modifier; and (f) water. the present invention is particularly intended for the adsorption of ammonia gases in an industrial environment.

Description

COMPOSITION FOR NEUTRALIZATION AND CONTROL OF AMMONIA AND ITS DERIVATIVES AND USE OF THE SAME Application field

[001] The present invention deals with a composition for the control and neutralization of gases and compounds derived from ammonia, with application in any type of industry that needs to carry out contingency in situations of leakage of ammonia and its derivatives.

State of the art

[002] Ammonia is present in almost all types of industries. This happens because the most widespread industrial refrigeration system in the country uses this gas in a pressurized manner, having high refrigeration efficiency at a relatively low cost. However, ammonia gas is extremely toxic and aggressive when in contact with people, causing several problems for those exposed to it, ranging from breathing problems, skin burns, burns in the respiratory system, blindness and in cases of longer exposure in high concentration, even death.

[003] Products or compositions adsorbing gases or unwanted odors are already known.

[004] The document CN 106349768 teaches an environment purifying composition comprising negative ion powders, water, sodium polyacrylate, laurel glycoside, ethylene glycol, imidazolinone, malic acid, zirconium oxide, polyoxyethylated castor oil, hydroxybis(lacto)titanium and titanate.

[005] Document CN 105062331 teaches an emulsion for adsorption of odor comprising diethanolamine, polyester resin, diatomite, white bamboo charcoal, diethanolamide, lime, powder gypsum, castor oil, polyvinyl alcohol, crab shell powders and water among others.

[006] The document RU 2702363 deals with air purifying agent containing glycerin, glycol and water in addition to perfume, odorant, surfactant, etc.

[007] The document CN 109125386 deals with bactericidal deodorant product, containing ethanol, glycerin, acetic acid, radix sophorae fiavescentis and essence.

[008] The document CN 106387996 deals with composition to adsorb ammonia containing peracetic acid, hydroxypropyl starch, glycerin monostearate, and diethylthiourea solution.

[009] Document CN 106350270 teaches a composition for removing unwanted odor in the form of washing liquid comprising propylene glycol, sorbierite, glycerin, dodecylbenzenesulfonic acid, ethanolamine, surfactant, coconut oil, copolymer of acrylic and maleic acids, ethanol, etc.

[0010] The document RU 2702363 teaches an air purifying agent containing glycerin and glycol, water, in addition to odorant, surfactant, perfume, etc.

[0011] Currently, some companies use acetic acid (with a concentration of around 3% to 5%) or something similar, in emergency cases, for the neutralization of ammonia. These used products do not obtain the same results as the performance of the present invention.

[0012] Acetic acid from a certain percentage becomes harmful to the environment and leaves the atmosphere flammable, so the application of acetic acid to neutralize ammonia and derivatives is impractical and dangerous.

[0013] In the neutralization with acetic acid an absurd volume of acetic acid is used while the product according to the invention makes the neutralization effective and safe with much less quantity. For example, for 1 kg of ammonia approximately 500 kg of acetic acid are needed, while in the case of the present invention for 1 kg of ammonia a maximum of 3 kg of the product is used.

[0014] Therefore, acetic acid becomes a palliative alternative to try to minimize the impacts that an ammonia leak can cause.

[0015] Due to the lack of products and solutions that effectively neutralize ammonia, a safe system for neutralizing ammonia and its derivatives was developed. The products used by the man in the art also do not obtain the same results as the present invention. We managed to develop a revolutionary product for the market that does not generate toxic effluents, but biodegradable.

Objectives of the invention

• - a composição final é verde, pois emprega como componentes essenciais, matérias primas naturais e biodegradáveis;
• - o processo de produção da composição não gera efluentes não biodegradáveis;
• - apresenta boa relação custo-benefício, por empregar componentes biodegradáveis e naturais seu custo final para o consumidor é acessível;
• - é capaz de realizar a neutralização dos gases amônia e derivados em situações controladas ou emergenciais, como em vazamentos ou escapes de gás que podem ocorrer durante a jornada de trabalho, por exemplo;
• - produto atóxico, inodoro e anticongelante, capaz de atuar em ambientes a menos de 40°. C.

[0016] The Applicant developed a composition that performs the neutralization and control of ammonia and its derivatives that had the following objectives:

• - the final composition is green, as it uses natural and biodegradable raw materials as essential components;
• - the composition production process does not generate non-biodegradable effluents;
• - presents a good cost-benefit ratio, as it uses biodegradable and natural components, its final cost for the consumer is affordable;
• - it is capable of neutralizing ammonia gases and derivatives in controlled or emergency situations, such as leaks or gas leaks that may occur during the working day, for example;
• - non-toxic, odorless and antifreeze product, capable of acting in environments below 40°. Ç.

Brief Description of the Invention

• (a) 0,02 % a 20 % de solubilizante;
• (b) 0,01 % a 10 % de um ou mais sais;
• (c) 10 % a 65 % de um ou mais conservantes naturais;
• (d) 1 % a 15 % de um ou mais álcoois;
• (e) 0,1 a 5 % de um modificador reológico; e
• (f) água.

[0017] The present invention deals with a composition for the control and neutralization of gases and ammonia-derived compounds which comprises in weight in relation to the total mass of the composition the following components:

• (a) 0.02% to 20% solubilizer;
• (b) 0.01% to 10% of one or more salts;
• (c) 10% to 65% of one or more natural preservatives;
• (d) 1% to 15% of one or more alcohols;
• (e) 0.1 to 5% of a rheological modifier; and
• (f) water.

Detailed Description of the Invention

[0018] The composition for neutralizing and controlling ammonia and its derivatives according to the invention consists of a combination and concentration of chemically compatible and stable substances, with the differential of being non-toxic and biodegradable. The formula was developed to carry out the neutralization and control of ammonia and its derivatives, having its formulation components that provide greater fluidity, stability, resistance to temperature and high speed of action.

[0019] The neutralization characteristics are also attractive points, as they have low density, bypass obstacles and have miscibility with water. The main function of the product is to neutralize and control leaks, contamination, treatments, among other examples, which are identified by the presence of ammonia and its derivatives.

[0020] Due to density and expansion by means of application, the product according to the invention acts directly on the molecule by molecular attraction based on Arhenius, Bronsted-Lowry Usanovich, Lavoisier and Lewis theories, which causes protection and prevents the passage of unwanted gases and compounds, leading the reagents to the formation of new non-toxic and biodegradable compounds.

• (a) 0,02 % a 20 % de solubilizante;
• (b) 0,01 % a 10 % de um ou mais sais;
• (c) 10 % a 65 % de um ou mais conservantes naturais;
• (d) 1 % a 15 % de um ou mais álcoois;
• (e) 0,1 a 5 % de um modificador reológico; e
• (f) água.

[0021] The present invention deals with a composition for the control and neutralization of gases and ammonia-derived compounds which comprises in weight in relation to the total mass of the composition the following components:

• (a) 0.02% to 20% solubilizer;
• (b) 0.01% to 10% of one or more salts;
• (c) 10% to 65% of one or more natural preservatives;
• (d) 1% to 15% of one or more alcohols;
• (e) 0.1 to 5% of a rheological modifier; and
• (f) water.

[0022] The neutralization of ammonia and its derivatives can occur by reactions that generate a new biodegradable compound and release water, or even in the case of an aqueous medium through hydrogen bonding, depending on the application format, which can occur by direct contact by liquid/liquid solution or gaseous phase gas/nebulization, through stoichiometric ratios.

• (a) 2 % a 10 % de solubilizante;
• (b) 1,5 % a 3 % de um ou mais sais;
• (c) 10 % a 50 % de um ou mais conservantes naturais;
• (d) 6 % a 8 % de um ou mais álcoois;
• (e) 0,2 a 1 % de um modificador reológico; e
• (f) água.

[0023] According to an embodiment of the invention, the composition may contain:

• (a) 2% to 10% solubilizer;
• (b) 1.5% to 3% of one or more salts;
• (c) 10% to 50% of one or more natural preservatives;
• (d) 6% to 8% of one or more alcohols;
• (e) 0.2 to 1% of a rheological modifier; and
• (f) water.

[0024] The component (a) or solubilizer can be chosen from the group comprising: castor oil, distilled glycerin, polysorbate, nonylphenol. Preferably, castor oil is used.

[0025] Component (b) or natural preservative can be chosen from the group comprising: citric acid, lactic acid, acetic acid, fumaric acid, malic acid, phosphoric acid, tartaric acid, gluconic acid, adipic acid, ascobic acid, propionic acid, succinic acid, lactobionic acid and delta-lactone gluconate. Preferably citric acid is used.

[0026] The component (c) or the salt can be chosen from the group comprising: sodium chloride, calcium carbonate and ammonium phosphate. In a preferred embodiment, sodium chloride is used.

[0027] The component (d) or the alcohol can be chosen from the group comprising: isopropanol, ethanol and fatty alcohol. Preferably isopropanol is used.

[0028] The rheological agent or component (e) can be chosen from xanthan gum and guar gum. Preferably, xanthan gum is used.

[0029] Component (f) or vehicle is preferably water.

• (a) 2 % a 10 % de óleo de mamona;
• (b) 1,5 % a 3 % de cloreto de sódio;
• (c) 10 % a 50 % de ácido cítrico;
• (d) 6 % a 8 % de isopropanol;
• (e) 0,2 a 1 % de goma xantana; e
• (f) água.

[0030] According to another embodiment of the invention, the composition comprises by weight relative to the total mass of the composition:

• (a) 2% to 10% castor oil;
• (b) 1.5% to 3% sodium chloride;
• (c) 10% to 50% citric acid;
• (d) 6% to 8% isopropanol;
• (e) 0.2 to 1% xanthan gum; and
• (f) water.

[0031] The composition according to the invention can be used in leaks, treatments and environmental decontamination, and can be applied in various ways, according to the specific need of each industry segment, such as: chemical, petrochemical, food, steel, agrochemical, between others.

[0032] The types of processes where the application of the composition is recommended are: contingency in case of ammonia leakage (mostly in a refrigeration system), treatment of exhausted atmospheric gases, gas washers, disinfection of environments, among others activities in which ammonia is present and is a risk factor.

[0033] The present technology acts in two application formats, namely: direct contact by liquid/liquid solution or gaseous phase gas/nebulization. Each application requires a stoichiometric balance studied on a case-by-case basis.

[0034] In various stages of development, improvements and applications, the composition reached a maximum neutralization level of 99% of gaseous ammonia, and along with this a non-toxic, odorless and antifreeze product, capable of acting in environments below 40°. C, thus being a complete solution that can work even inside cold rooms for freezing.

• (a) Desinfecção de ambientes: é necessária quando a amônia permanece confinada em determinado local. Com uma aplicação simples e manual, esta aplicação pode ser feita com equipamentos nebulizadores e atomizadores disponíveis no mercado. Os benefícios desta aplicação estão no retorno imediato das atividades, eliminando altos custos de paradas industriais, no fluxo do processo, modificações emergenciais em estrutura, entre outros. Este tipo de aplicação também beneficia nas manutenções preventivas, garantindo mais segurança e sem alerta por pequenos vazamentos de amônia;
• (b) Contingência móvel: é realizada através do sistema de alta aplicação capaz de combater vazamentos pontuais e de grandes proporções. A presente invenção é capaz de garantir um controle em momentos de emergência e de grande necessidade de contenção de gás. Os benefícios desta aplicação são: controle e proteção contra o vazamento de gás; aumento do tempo para evacuação dos colaboradores do ambiente; aumento da segurança da expansão do gás; auxilia no fechamento de válvulas para conter o vazamento e auxilia nas manutenções preventivas;
• (c) Contingência fixa: é realizada através de sistema de alta pressão, compostos por cilindros de alta pressão, painéis elétricos, medidores de gás, tubulações, bicos especiais para aplicação de produto, entre outros componentes. O sistema é projetado especialmente para seu local de aplicação, levando em conta produtos essenciais, como válvulas, tanques, tubulações, painéis elétricos, evaporadores, entre outros, para a eficiência máxima na contenção do gás no momento de emergência. Os benefícios deste sistema é o fato de ser seguro e automatizado, identifica de forma imediata o vazamento, representando maior segurança, eficácia, agilidade no combate ao gás e maior abrangência de aplicação.

[0035] The forms of application of the composition according to the invention can be:

• (a) Disinfection of environments: it is necessary when ammonia remains confined to a certain location. With a simple and manual application, this application can be done with nebulizers and atomizers available on the market. The benefits of this application are in the immediate return of activities, eliminating high costs of industrial stoppages, in the process flow, emergency changes in structure, among others. This type of application also benefits from preventive maintenance, ensuring more safety and without warning for small ammonia leaks;
• (b) Mobile contingency: it is performed through a high application system capable of combating punctual and large-scale leaks. The present invention is capable of guaranteeing control in times of emergency and when there is a great need for gas containment. The benefits of this application are: control and protection against gas leakage; increased time for evacuation of employees from the environment; increased security of gas expansion; assists in closing valves to contain leakage and assists in preventive maintenance;
• (c) Fixed contingency: is performed through a high pressure system, consisting of high pressure cylinders, electrical panels, gas meters, pipes, special nozzles for product application, among other components. The system is specially designed for its application site, taking into account essential products such as valves, tanks, piping, electrical panels, evaporators, among others, for maximum efficiency in containing gas in an emergency. The benefits of this system are the fact that it is safe and automated, it immediately identifies the leak, representing greater safety, efficiency, agility in combating the gas and greater scope of application.

[0036] The following are examples of embodiments of the invention that should not serve for purposes limiting the scope of the invention.

Example 1

TABELA 1[0037] A composition for the control and neutralization of gases and ammonia-derived compounds was prepared according to the invention, which presented contents of the components as indicated below in Table 1:

TABLE 1

• - tanque de 1.000 litros com misturador
• - bomba de envase
• - sistema automatizado de envase
• - cocho de contenção
• - bombonas de 25 litros
• - chave de aperto de tampa
• - balança

[0038] The equipment used were:

• - 1,000 liter tank with mixer
• - filling pump
• - automated filling system
• - containment trough
• - 25 liter drums
• - lid tightening wrench
• - balance

• 1°) 600 ml de água,
• 2°) ácido cítrico,
• 3°) cloreto de sódio,
• 4°) óleo de mamona,
• 5°) isopropanol,
• 6°) goma xantana, e
• 7°) completar água até 1000 ml.

[0039] Initially 600 liters of water was added to the mixing tank. Then the mixer was turned on, so that the raw materials indicated in Table 1 were being added, in the following sequence:

• 1°) 600 ml of water,
• 2°) citric acid,
• 3°) sodium chloride,
• 4°) castor oil,
• 5) isopropanol,
• 6th) xanthan gum, and
• 7°) make up to 1000 ml of water.

[0040] The mixture obtained was added for 15 minutes at room temperature and room pressure. After this time, the composition obtained was filled.

[0041] The production time of the composition lasted 1 hour and 30 minutes and the filling time lasted two hours.

• (a) Medições por aplicação fixa via medidores de gás (líquido x gás): realiza-se aplicação de amônia através de um cilindro pressurizado de volume expansivo onde o volume do ambiente é de 50 m3. A concentração de amônia sendo elevada para mais de 500 ppm. Após esta leitura se aplica a solução obtendo-se a neutralização do composto indesejado.
• (b) Aplicação por caixa nebulizador (líquido x gás): aplica-se amônia em um reservatório fechado transparente. Realiza-se a medição com um medidor portátil acoplado a caixa. Assim que a concentração chegar a 150 ppm, inicia-se a nebulização da solução para realizar a neutralização do composto em questão.
• (c) Leitura de neutralização por condutividade (líquido x líquido): introduz-se uma solução de amônia 30% em um Becker volumétrico. Realiza-se a leitura da condutividade que certamente é de aproximadamente 800 μS (micro Siemens). Aplica-se a solução para neutralização. Após a aplicação, realiza-se novamente a leitura de condutividade onde esta deve estar acima de 2000 μS (micro Siemens);
• (d) Comprovação de neutralização por titulação e pH (líquido x líquido): adiciona-se um volume conhecido de amônia em um Erlenmeyer, na bureta coloca-se a solução da composição segundo a invenção. Ao atingir o equilíbrio estequiométrico entre os compostos reagentes chega-se ao ponto de viragem quando a solução muda de coloração conforme o indicador empregado.
• (e) Medições para aplicações móveis (líquido x gás): simula-se um vazamento de amônia em ambiente controlado. Ao iniciar o vazamento do gás, inicia-se a aplicação da solução neutralizadora através de equipamentos nebulizadores de alta pressão. Durante a aplicação, realiza-se medições através de medidores de gás amônia no ambiente do teste, para comprovar eficiência de neutralização.

[0042] The analytical ways to prove effectiveness can be:

• (a) Measurements by fixed application via gas meters (liquid x gas): ammonia is applied through a pressurized cylinder of expanding volume where the ambient volume is 50 m3. Ammonia concentration being raised to over 500 ppm. After this reading, the solution is applied, obtaining the neutralization of the unwanted compound.
• (b) Application by nebulizer box (liquid x gas): ammonia is applied in a transparent closed reservoir. The measurement is carried out with a portable meter attached to the box. As soon as the concentration reaches 150 ppm, the nebulization of the solution begins to carry out the neutralization of the compound in question.
• (c) Conductivity neutralization reading (liquid x liquid): a 30% ammonia solution is introduced into a volumetric Becker. The conductivity is read, which is certainly approximately 800 μS (micro Siemens). The solution for neutralization is applied. After the application, the conductivity reading is performed again, where it must be above 2000 μS (micro Siemens);
• (d) Proof of neutralization by titration and pH (liquid x liquid): a known volume of ammonia is added in an Erlenmeyer flask, and the solution of the composition according to the invention is placed in the burette. Upon reaching the stoichiometric balance between the reacting compounds, the turning point is reached when the solution changes color according to the indicator used.
• (e) Measurements for mobile applications (liquid x gas): an ammonia leak in a controlled environment is simulated. When starting the gas leak, the application of the neutralizing solution is started through high pressure nebulizer equipment. During the application, measurements are carried out using ammonia gas meters in the test environment, to prove the neutralization efficiency.

Example 2

[0043] The attached Figure 1 shows the result of the neutralization curve referring to the gas meter of a company in the slaughterhouse sector in a simulation of leakage in a controlled environment.

Example 3

SNC*: Sistema Nervoso Central; NA: nenhuma alteração; 1: Conteúdo sanguinolento; 2: Congestão; 3: Conteúdo gasoso; -: Necropsia não realizada devido avançado estado de autólise do animal.
TABELA 2[0044] Table 2 below indicates the test result on the toxic effects resulting from acute inhalation exposure (in a single exposure of an average aerosol concentration of 1.740 mg/l for 4 hours, with the formulation according to example 1), through of the determination of the median lethal concentration in rats:

CNS*: Central Nervous System; NA: no changes; 1: Bloody content; 2: Congestion; 3: Gas content; -: Necropsy not performed due to the animal's advanced state of autolysis.
TABLE 2

Example 4

[0045] Two tests were performed according to the methodology below.

[0046] The composition of example 1 was applied in a container containing ammonia with the dimensions below:

[0047] Height: 2.25 m

[0048] Width: 2.45 m

[0049] Length: 7.40 m

[0050] Volume: Approximately 41 m3

[0051] These samples were applied with the aid of a motor pump at 12 bar, a 3/8 pipe of approximately 12 meters and 4 nebulizer nozzles with a flow of 150 ml/minute each.

[0052] Attached, Figures 2 and 3 indicate the ammonia concentrations over time, for the two tests performed respectively.

Example 5

[0053] An immediate biodegradability test was carried out with the product according to example 1, hereinafter referred to as "SAFE", according to the protocol transcribed below:"...

2. MATERIALS AND METHODS

[0054] The adopted methodology follows the OECD Guidelines for the Testing of Chemicals (Ready Biodegradability. Closed Bottle Test. 301 D, 1992).
2.1 Sample data
Sample identification: SAFE.
Sample number: 1915736.
Entry date: 04/02/2019.
Date of manufacture: 03/2019.
Expiry date: 09/2021.
Lot No: 2500319.
Packaging: plastic bottle.
Physical State: Liquid.
Sampling: under the responsibility of the applicant.
Chemical Oxygen Demand (COD) 1: 246288 mg/kg.
1 Determination performed on the pure sample.
2.2 Data from test organisms
Species: microorganisms present in activated sludge from a biological sewage treatment plant.
Tested sludge concentration: 0.02 mg/L suspended solids.
2.3 Test conditions Start date: 04/09/2019.
End date: 05/07/2019.
Water temperature: 20.1 to 23.4°C.
Photoperiod: dark.
Duration: 28 days.

2.4 Preparation of stock solutions

[0055] The sample stock solution (1000 mg/L) was prepared by weighing 0.1000 g on an analytical balance and diluting to a volume of 100.0 mL with deionized water.

[0056] The stock solution of the reference substance (1000 mg/L) was prepared by weighing 0.1000 g of Sodium Benzoate on a balance and diluting to a volume of 100.0 mL with deionized water.

2.5 Preparation of solutions

[0057] The stock solutions were constantly homogenized during the preparation of test solutions. Test solutions were prepared in synthetic mineral medium.

[0058] To verify the immediate biodegradability of the sample, a solution of 2.00 mg/L of the sample was prepared.

[0059] To assess the activity of microorganisms present in the water, a 2.00 mg/L solution was prepared with the reference substance, sodium benzoate.

[0060] To assess whether the sample has potential toxicity to microorganisms, a toxicity control (CT) was prepared consisting of 2.00 mg/L of the sample and 2.00 mg/L of reference substance.

[0061] A white control, with only synthetic mineral medium and inoculum of microorganisms, was included in the test to eliminate oxygen consumption of possible interferents.

TABELA 3[0062] Table 3 below describes the procedure for preparing the test and white control solutions:

TABLE 3

[0063] For all treatments, ten incubation flasks were prepared, being used two flasks for each day of reading.

2.6 Procedures

[0064] The dissolved oxygen concentration (mg O2/L) and the pH of all test solutions were determined at the beginning of the test (day 0). On days 7, 14, 21 and 28, two vials of each test solution were removed for the analysis of dissolved oxygen concentration in order to determine the Biochemical Oxygen Demand (BOD).

2.7 Determination of the Chemical Oxygen Demand of the Sample

[0065] Chemical Oxygen Demand (COD) is the amount of oxygen consumed during the oxidation of a substance when heated with a strong oxidizing agent (potassium dichromate). It provides a measure of the amount of oxidizable matter present and is expressed in mg of oxygen consumed per mg of substance. The analysis of the COD of the sample was performed by the closed reflux method followed by colorimetric determination, according to Standard Methods for the Examination of Water and Wastewater (APHA et al., 2005) and specifications of the equipment manufacturer (HACH, 1993).

[0066] The sample was homogenized and an aliquot was diluted in deionized water, providing a stock solution with adequate concentration for analysis. This preparation was performed in duplicate and an aliquot was taken from each prepared solution to be added to the flask containing the reagents for acid digestion. Tubes were placed in a heating block at 150°C for 2 hours. A white control with deionized water was treated in the same way.

[0067] After cooling, through a spectrophotometer, the absorbance of the solutions present in the tubes was verified to determine the COD of the sample.

2.8 Calculation of Theoretical Oxygen Demand (DTO) of the reference substance

Onde,
c, h, cl, n, s, p, na, o: referem-se ao número de átomos de C, H, Cl, N, S, P, Na e O, respectivamente, presentes na molécula da substância.[0068] When the molecular formula of a chemical substance is known, one can calculate the Theoretical Oxygen Demand, which is the total amount of oxygen required to completely oxidize the substance. The DTO is calculated from the molecular formula and molecular weight (PM) of the substance, being expressed in mg of oxygen required per mg of sample, using the following formula:

Where,
c, h, cl, n, s, p, na, o: refer to the number of atoms of C, H, Cl, N, S, P, Na and O, respectively, present in the molecule of the substance.

The calculated OD of Sodium Benzoate was calculated to be 1665394 mg/kg.

2.9 Treatment of results

[0070] For each day of analysis, the net oxygen consumption was calculated as the difference in oxygen consumption of the blank control and test solutions, under the test conditions, and the result was expressed in mg 02/mg of the substance tested:

[0071] Biodegradability (%D) was calculated as the ratio between this net oxygen consumption (BOD) and the Chemical Oxygen Demand (COD) of the sample, expressed as a percentage:

[0072] The percent degradation (%D) of the reference substance was calculated by dividing the BOD by the DTO.

• - O consumo de O2 no controle branco não deve exceder 1,5 mg de oxigênio dissolvido/L após 28 dias.
• - A porcentagem de biodegradação da substância de referência deve ser igual ou superior a 60%, ao final de 28 dias de incubação.
• - A concentração residual de oxigênio nos tratamentos (amostra e de referência) deve estar acima de 0,5 mg/L, em qualquer tempo.

[0073] For the sample to be characterized as readily biodegradable, it must present a minimum of 60% biodegradation within 14 days after obtaining 10% (14-day window), and this 14-day window must not exceed 28 rehearsal days.
2.10 Validation Criteria

• - O2 consumption in the white control must not exceed 1.5 mg dissolved oxygen/L after 28 days.
• - The percentage of biodegradation of the reference substance must be equal to or greater than 60% at the end of 28 days of incubation.
• - The residual oxygen concentration in the treatments (sample and reference) must be above 0.5 mg/L at any time.

3. RESULTS

[0074] The measured values of dissolved oxygen (mg/L) in the two replicates on days 0, 7, 14, 21 and 28 of the blank control, reference substance, SAFE sample (2.00 mg/L) and toxicity control are shown in Table 1.

[0075] Table 2 shows the values of net dissolved oxygen consumption (mg/L) after 0, 7, 14, 21 and 28 days. The net dissolved oxygen consumption values of the sample, the toxicity control and the reference substance during the 28 days of testing are shown in Figure 1.

[0076] It was verified that there was consumption of 0.28 mg/L of oxygen in the white control, a value below the limit of 1.50 mgO2/L. The percentage of biodegradability obtained for the reference substance was 75%, which is higher than the 60% limit established by the test standard. The residual oxygen concentration in the treatments (sample and reference) was above 4.55 mgO2/L. All test validation criteria were met (OECD, 1992).

[0077] The toxicity control containing the sample and the reference substance showed an oxygen consumption similar to that observed in the reference substance (sodium benzoate), indicating that the sample did not show toxicity to microorganisms.

[0078] At the end of the 28-day incubation period, the consumption of oxygen in the sample solution was higher than in the blank control, indicating that the sample suffered microbial degradation. The biodegradability of the sample was estimated at 100%, with a minimum of 60% biodegradation during the 14-day window, as established by the OECD (1992) standard. In view of the results obtained, the SAFE sample was considered to be readily biodegradable after 28 days.
..."

Example 6:

TABELA 5

TABELA 4[0079] Different compositions were also formulated than indicated in example 1 and which are indicated in table 4 below:

TABLE 5

TABLE 4

Claims (14)

Composition for neutralizing and controlling ammonia and its derivatives characterized by comprising in weight in relation to the total mass of the composition:

• (a) 0.02% to 20% solubilizer;
• (b) 0.01% to 10% of one or more salts;
• (c) 10% to 65% of one or more natural preservatives;
• (d) 1% to 15% of one or more alcohols;
• (e) 0.1 to 5% of a rheological modifier; and
• (f) water.

Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1, characterized in that it comprises in weight in relation to the total mass of the composition:

• (a) 2% to 10% solubilizer;
• (b) 1.5% to 3% of one or more salts;
• (c) 10% to 50% of one or more natural preservatives;
• (d) 6% to 8% of one or more alcohols;
• (e) 0.2 to 1% of a rheological modifier; and
• (f) water.

Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1 or 2, characterized in that the solubilizer or component (a) can be chosen from the group comprising: castor oil, distilled glycerin, polysorbate, nonylphenol. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 3, characterized in that the solubilizer is castor oil. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1 or 2, characterized in that the salt or component (b) is chosen from the group comprising: sodium chloride, calcium carbonate and ammonium phosphate. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 5, characterized in that the salt is sodium chloride oil. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1 or 2, characterized in that the component (c) or natural preservative is chosen from the group comprising: citric acid, lactic acid, acetic acid, fumaric acid, acid malic acid, phosphoric acid, tartaric acid, gluconic acid, adipic acid, ascobic acid, propionic acid, succinic acid, lactobionic acid and delta-lactone gluconate. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 7, characterized in that the preservative is citric acid. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1 or 2, characterized in that the component (d) or alcohol is chosen from the group comprising: isopropanol, ethanol and fatty alcohol. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 9, characterized in that the alcohol is an isopropanol oil. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1 or 2, characterized in that the component (e) or rheological agent is chosen between xanthan gum and guar gum. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 11, characterized in that the rheological agent is xanthan gum. Composition for neutralizing and controlling ammonia and its derivatives, according to claim 1 or 2, characterized in that it comprises in weight in relation to the total mass of the composition:

• (a) 2% to 10% castor oil;
• (b) 1.5% to 3% sodium chloride;
• (c) 10% to 50% citric acid;
• (d) 6% to 8% isopropanol;
• (e) 0.2 to 1% xanthan gum; and
• (f) water.

Use for neutralizing composition and control of ammonia and its derivatives, as described in any one of the preceding claims, characterized in that it is used for the neutralization and control of ammonia and its derivatives.

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