Pelletized Walnut Litter Odor Control

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Solution Overview

Problem

Existing animal litters rely on expensive and hazardous chemical additives for odor control, which are not environmentally friendly and do not effectively prevent odor or breakdown in landfills.

Innovation Solution

An organic animal litter made from pelletized walnut membrane and pelica, with a mold inhibitor agent, that absorbs waste and naturally masks odor without shell components, utilizing a processing method that removes shell particles and includes optional additives like clumping agents and fragrances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If chemical additives are used for odor control in animal litter, then odor control is improved, but manufacturing cost increases and hazardous waste is generated

Engineering Contradiction:

Improveodor controlVSAvoidhazardous waste byproducts

Core Design Contradiction:

Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

The patent converts walnut shell byproducts, which are normally discarded as waste or used for low-value burning applications, into a high-performance animal litter material. The processing method transforms this waste material into pellets that provide superior odor control through natural mechanisms, eliminating the need for chemical additives and their associated hazardous waste problems.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent applies parameter changes by controlling the particle size distribution of walnut shell components during processing. By removing fine particles and controlling the size range, the material achieves optimal absorbency and odor control properties without requiring chemical additives. The pelletization process also changes physical parameters like density and shape to enhance performance.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If chemical additives are used for odor control, then odor masking is improved, but manufacturing cost increases

Engineering Contradiction:

Improveodor controlVSAvoidmanufacturing cost

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent uses inexpensive walnut shell byproducts as the base material, which are readily available from the walnut processing industry. These waste materials are transformed into effective litter that provides odor control through natural physical and chemical properties of the walnut shell components, eliminating the need for expensive chemical odor control additives.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The walnut shell material provides self-service odor control through its natural properties. The porous structure and composition of the processed walnut shell particles enable them to naturally absorb and neutralize odors without requiring additional chemical treatments or expensive additives, making the manufacturing process more economical.

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If traditional walnut shell byproduct is used for burning, then waste disposal is simplified, but environmental benefit is reduced compared to litter application

Engineering Contradiction:

Improvewaste disposalVSAvoidenvironmental friendliness

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent recovers value from walnut shell byproducts that would otherwise be discarded or used for low-value burning. By processing these materials into animal litter, the invention creates a high-value application that benefits both the environment (reducing waste) and provides functional performance (odor control and absorbency).

Inventive Principle:

Principle #34Discarding and recovering

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 litter provides superior odor control, is highly absorbent, and does not break down, outperforming chemical-based litters in odor neutralization and durability, while utilizing waste byproducts from the walnut industry.

Implementation Method 1

highly absorbent and neutralizes odor

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

neutralizes odor

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 3

compressing the resulting slurry through a small holes in a die

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 4

pelletized by mixing with water and compressing the resulting slurry through a small holes in a die

Methodology Applied

Scientific EffectExtrusion: Extrusion

Data Source

PatentUS9750226B2Pelletized tree nut animal litter and method of making same

Publication Date: 2017.09.05 ECO SHELL INC

AI summary

A method of making animal litter from a tree nuts, such as from a walnut composition of shells, pelica and membrane, by grinding or crushing the walnut composition, removing all or almost all of the shells from the walnut composition by vibration and aspiration to form muller, adding any desired additives to the muller (e.g. fragrances, fillers and extenders, clumping agent such as guar bean, mold inhibitor agent such as calcium propionate, etc.), and pelletizing the muller by heating and compressing the muller through small apertures and cutting the muller exiting the apertures at desired lengths. The heating and compression of the muller results in pellets that have odor absorbing characteristics that outperform commercial animal litters.