Ammonia Suppression in Animal Litter Using Staphylococcus Bacteria
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Solution Overview
Problem
Animal litter odors, primarily caused by ammonia formation from microbial action on urea and uric acid, are distressing to humans and animals, and contribute to greenhouse gas emissions, necessitating a method to suppress ammonia formation effectively.
Innovation Solution
A method involving a carrier material treated with Staphylococcus-xylosus or Staphylococcus-cohnii bacteria and a salt of an aminopolycarboxylic acid compound as an odor inhibitor, combined with an acidifier, significantly reduces ammonia levels in the headspace, achieving a 5 to 98 percent improvement compared to untreated controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If animal waste is managed using conventional litter materials, then the litter can absorb feces and urine, but strong ammonia odors develop due to microbial action on urea and uric acid
Solution Approach 1:
The patent introduces specific bacteria strains (Staphylococcus xylosus and Staphylococcus cohnii) as intermediary organisms that compete with ammonia-producing microbes. These bacteria serve as a mediator that transforms the microbial community structure in the litter, reducing ammonia formation while maintaining waste decomposition functions.
Solution Approach 2:
The patent changes the microbial population parameters by introducing specific bacterial strains that alter the biochemical processes in the litter. The addition of these bacteria changes the metabolic pathways active in the waste material, shifting from ammonia-producing reactions to processes that reduce odor formation.
2Object-affected harmful factors
If ammonia formation is suppressed using chemical inhibitors, then odor is reduced, but the system complexity and potential harm from chemical substances increase
Solution Approach 1:
The patent employs self-service by utilizing naturally occurring or easily culturable bacteria strains that perform the odor suppression function autonomously. The Staphylococcus xylosus and Staphylococcus cohnii strains naturally compete with ammonia-producing microbes and can be applied directly to the litter without requiring complex chemical delivery systems or continuous external intervention.
3Object-affected harmful factors
If ammonia formation is suppressed using chemical inhibitors, then odor is reduced, but potential toxicity and harm to animals and environment increase
Solution Approach 1:
The patent converts the harmful effect of ammonia production into a benefit by introducing bacteria that outcompete ammonia-producing microbes. The Staphylococcus xylosus and Staphylococcus cohnii strains transform the harmful microbial activity into a beneficial process where odor formation is reduced while waste is still effectively managed. This approach eliminates the need for potentially toxic chemical inhibitors.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively suppresses ammonia formation, reducing undesirable odors and ammonia content in animal waste management systems, improving animal welfare and environmental sustainability.
Implementation Method 1
ammonia results from microbial action on urea and/or uric acid in the animal waste
Implementation Method 2
the odor inhibitor comprising a salt of an aminopolycarboxylic acid compound
Implementation Method 3
providing a bacteria, an acidifier and an odor inhibitor to the carrier material
Data Source
AI summary
A method for suppressing the formation of ammonia comprising providing a carrier material to a container having a headspace; providing a bacteria, an acidifier and an odor inhibitor to the carrier material, the bacteria comprising Staphylococcus-xylosus or Staphylococcus-cohnii bacteria, and the odor inhibitor comprising a salt of an aminopolycarboxylic acid compound; and applying animal waste to the carrier material; wherein there is a 5 to 98 percent improvement of ammonia content in the headspace as compared to an untreated control comprising a container containing the carrier material and the bacteria and not contain the odor inhibitor.