The full name of DBNPA is 2,2-dibromo-3-nitriloproio amide. It is a broad-spectrum and efficient industrial fungicide. DBNPA is used to prevent bacteria and algae from growing in papermaking, industrial circulating cooling water, mechanical lubricants, pulp, wood, paint, and plywood. 2,2-Dibromo-3-Nitrilopropionamide is currently popular at home and abroad. Organic bromine fungicides.
Sterilization mechanism of DBNPA
2,2-Dibromo-3-nitriloproion amide molecules can rapidly penetrate microbial cell membranes. Act on certain protein groups. The cells are normally redox terminated. Its branches can also selectively bromine or oxidize specific enzyme metabolites of microorganisms. Eventually leads to cell death.
1. DBNPA product performance
1.1 Broad spectrum, fast and efficient sterilization performance
2,2-Dibromo-3-nitriloproionamide has a broad spectrum of bactericidal properties. It has a good killing effect on bacteria, fungi, yeast, algae, biological slime and pathogenic microorganisms that threaten human health.
2,2-Dibromo-3-nitriloproion amide (DBNPA) is characterized by extremely fast sterilization and high efficiency. The sterilization rate can reach over 99% in 5~10 minutes. It was compared to the other three biocides. The results showed that when the same bactericidal effect was achieved, 2,2-Dibromo-3-nitriloproion amide was used at a dose of the only 7.5ppm, which is much lower than the other three fungicides.
1.2 Good inhibition of peeling on biofilms
When this biocide is added to the system, its active components act rapidly on planktonic microorganisms. It can be quickly sterilized. At the same time, the permeability of organic bromine is good. The active component of the agent rapidly penetrates the metal surface. Acts on smaller microbial communities. It allows rapid depolymerization and prevents the formation of biofilms.
For systems that have formed biofilms, the active components do not react with the slime layers in the biofilm. It quickly penetrates deeper into the biofilm. A microbial community acting at the junction of a biofilm and a metal surface. Destruction of its viscosity causes the biofilm to fall off.
Experimental studies have shown that for the peeling of the biofilm at the age of 7 days, the smaller dosage can achieve the same peeling effect, and the advantage of the peeling effect on the biofilm is very obvious.
1.3 Effectively kill Legionella
The control effect of 2,2-Dibromo-3-nitriloproion amide (DBNPA) on Legionella is very significant.
Studies have shown that 2~5 mg/L of this biocide (effective), can reduce Legionella 5-6 logs within 3 hours. 2~4 mg/L (effective) can reduce Legionella by 6 logs for 2 hours. For Legionella in biofilms. 10 mg/L (effective), 12 hours can completely kill Legionella. Additional data indicate that low doses of organic bromine and glutaraldehyde are used in combination. Legionella in biofilms can be lowered to undetectable levels.
1.4 Rapid degradation
2,2-Dibromo-3-nitriloproionamide is rapidly degraded to carbon dioxide, ammonia and bromine salts upon completion of bactericidal action. It does not cause the enrichment of harmful ions in the water. There is no impact on the environment, so emissions are not restricted. This is a distinguishing feature of organic bromine biocides that distinguish them from other non-oxidizing biocides.
| The relationship between DBNPA half-life and temperature and pH | |||||||
|---|---|---|---|---|---|---|---|
| pH value | 6.0 | 6.7 | 7.3 | 7.7 | 8.0 | 8.9 | 9.7 |
| Half-life, h | 155.0 | 37.0 | 8.8 | 5.8 | 2.0 | 0.34 | 0.11 |
| Temperature, °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
1.5 Effectively kill sulfate-reducing bacteria
The oilfield sewage has a high sulfate content, which is very beneficial to the reproduction of sulfate-reducing bacteria. The large-scale reproduction of sulfate-reducing bacteria will lead to an increase in the content of H2S in water. 2,2-Dibromo-3-nitriloproion amide acts rapidly on sulfate-reducing bacteria. It can be quickly killed before it reacts with sulfate to form H2S.
Experimental studies have shown that 10 mg/L can effectively control the sulfate-reducing bacteria in the system, so as to completely remove the sulfide in the re-injection system and protect the system from sulfide corrosion.
2. DBNPA application areas and how to use
2.1 DBNPA application area
2,2-Dibromo-3-Nitrilopropionamide is widely used as a disinfectant, bactericide, algicide, slime stripper, and mildew inhibitor in the following aspects.
The circulating cooling water system, oil field water injection system, bactericide, algicide, slime stripper in the paper industry.
Preservatives for paints, waxes, inks, detergents, surfactants, slurries, resins.
Process water, air purifier system in the machinery manufacturing industry, fungicides, and algicides in municipal water landscapes.
2.2 DBNPA usage
When used as a water treatment slime stripper, the DBNPA is added at a concentration of 30~50 mg/L.
Used as a water treatment bactericide for circulating cooling water systems. According to water retention, DBNPA is added at 10~20 mg/L.
(Please consult IRO Professional Service Engineer for other applications)
3. Packaging and storage
Packed in 25 kg woven bags. The transportation process prevents exposure and rain. Store in a ventilated, dry place below 40°C. Avoid freezing, heating or direct sunlight. The product shelf life is six months.