Supercharge Your Innovation With Domain-Expert AI Agents!

A synergistic biocide and process for controlling growth of microorganisms

A technology for microorganisms and water control, applied in the direction of chemicals for biological control, plant growth regulators, botany equipment and methods, which can solve problems such as non-use, high volatility and odor

Inactive Publication Date: 2012-05-30
SOLENIS TECH CAYMAN
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dichloroamines are reported to be excellent disinfectants but have negative properties such as high volatility and odor
[0021] Although chloramine is widely practiced for treating municipal water distribution systems, it is not typically used in industrial systems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A synergistic biocide and process for controlling growth of microorganisms
  • A synergistic biocide and process for controlling growth of microorganisms
  • A synergistic biocide and process for controlling growth of microorganisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] A measured amount of monochloramine and a measured amount of dichloramine are added to the bacterial suspension and the cell suspension incubated for a certain period of time. The efficacy of the antimicrobial mixture was determined by measuring its growth or loss after an additional appropriate incubation time. This sample demonstrates synergistic activity between monochloroamine and dichloroamine on artificial bacterial consortia in synthetic white water at pH 5.5 and 8.0 under a simultaneous feeding strategy. A synergy index value of <1.00 indicates a synergistic effect of the two active substances.

[0092] The synergy index of table 1 monochloramine and dichloramine mixture

[0093]

[0094]

[0095] Table 1 shows the synergy between monochloroamines and dichloroamines. This synergy is affected by pH. For example, the synergistic ratio of monochloroamine and dichloroamine is broader at pH 8 than at pH 5. At higher pH, the ratio of monochloroamine can be l...

Embodiment 2

[0097] In this example, a measured amount of monochloramine and a measured amount of dichloramine were added to a prepared density of about 1×10 6 cells per milliliter of the bacterial consortium and incubate the cell suspension for a certain period of time. The bacterial consortium is as described above. The efficacy of the antimicrobial mixture was determined by measuring the number of surviving bacteria after the contact time. The efficacy of monochloramine, dichloramine and mixtures of these two active substances was compared at different pH values. Bacterial consortiums are prepared in inorganic salt solutions, pH adjusted to a selected value, and immunized with monochloramines and dichloramines and combinations thereof. Samples were collected at regular intervals to count the number of surviving bacteria.

[0098] Table 2 Number of surviving bacteria after 20 minutes of contact with monochloramine (MCA), dichloramine (DCA) and mixtures thereof. Quantity is log 10 tr...

Embodiment 3

[0102] Although synergy was detected when monochloramine and dichloramine were mixed in a 1:1 ratio, the results of Example 1 indicated that the optimal ratio was greater than 1:1 (monochloramine:dichloramine). In this example, the bacterial consortium was prepared by adjusting the pH of the inorganic salt solution to a selected level immediately prior to the addition of the cells. By mixing appropriate amounts of 30% ammonium hydroxide and 6.2% sodium hypochlorite in a volume of deionized water to obtain an equimolar ratio of Cl - and NH 2 + to prepare the desired concentration of monochloramine. After preparing the monochloramine solution, its purity was checked by measuring the absorption spectrum of the solution. To prepare the dichloroamine solution, adjust the pH of the monochloramine solution to below 3.0. This ensures the conversion of monochlorinated amines to dichloroamines. The spectral characteristics of the dichloroamine solution indicated that the pH drop of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Synergistic mixtures of haloamines and their use to control the growth of microorganisms in aqueous systems are disclosed. The method of using the synergistic mixtures entails adding an effective amount of a monohaloamine and an effective amount of a dihaloamine to an aqueous system. The ratio of monohaloamine to dihaloamine is selected to result in a synergistic biocidal effect.

Description

technical field [0001] The present invention relates to synergistic mixtures of haloamines and their use to control the growth of microorganisms in aqueous systems, more particularly in industrial process waters. Background technique [0002] Uncontrolled growth of microorganisms in industrial manufacturing systems can have serious consequences such as reduced product quality, product degradation or spoilage damage, product contamination, and disruption of a wide range of important industrial manufacturing processes. The growth of microorganisms on surfaces exposed to water (e.g., recirculation systems, heat exchangers, once-through heating and cooling systems, pulp and paper processing systems, etc.) can be particularly problematic since many of these systems provide An environment suitable for the growth of bacteria and other types of microorganisms. Industrial preparation water often provides temperature, nutrients, pH and other conditions that allow the growth of microo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/00A01N33/14A61L2/18A01P1/00C02F1/76
Inventor M·J·迈耶F·L·辛格尔顿
Owner SOLENIS TECH CAYMAN
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com