Animal husbandry – Material for absorbing moisture from waste product
Patent
1997-04-25
1999-10-12
Carone, Michael J.
Animal husbandry
Material for absorbing moisture from waste product
A01K 1015
Patent
active
059641878
DESCRIPTION:
BRIEF SUMMARY
The present invention relates generally to wood-derived products and more particularly to products derived from treated wood and their use such as in bedding material for animals in various industrial, domestic and research applications.
Throughout this specification, unless the context requires otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or integer or group of elements or integers but not the exclusion of any other element or integer or group of elements or integers.
Environmental concerns play a major role in the design of effective waste management protocols in a broad spectrum of industries. The wood industry, for example, generates vast quantities of waste annually throughout the world and it is essential for economic and environmental reasons that wood waste products be disposed of in an appropriate manner.
Preferred waste management practices facilitate the growth of secondary industries from the waste material. The growth of these secondary industries effectively subside the removal of the particular waste concerned. However, some waste products are considered too toxic or recalcitrant for further exploitation and consequently the cost of disposal of such material to the particular industry is passed ultimately to the consumer.
Wood is one of the most important renewable biomass resources in the world and is used in a variety of industries such as the building, textile and energy industries the building and construction industries, the use of softwood is frequently preferred. Soft wood trees (conifers or gymnosperms, i.e. plants with naked seeds) are cone bearing trees which do not contain vessel elements, whereas hard wood trees (angiosperms, i.e. plants with covered seeds) are generally porous in that they contain vessel elements. Structurally, wood varies greatly and for this reason, species are selected for specific purposes.
However, wood may be attacked by a variety of organisms such as fungi, bacteria, insects and marine borers. To combat biodeterioration of wood, chemical preservation is now a common practice. Without preservative treatment, insect damage or microbial degradation of wood may occur within three to five years.
One preservative treatment is known as chromated copper arsenate (hereinafter referred to as "CCA"). During CCA treatment of wood, the preservative ingredients become fixed in the wood cells as leach-resistant, insoluble precipitants of copper arsenate and chrome arsenate which do not vaporise or evaporate.
However, products from treated timber (such as CCA-treated timber) have been considered too toxic or an inappropriate choice for re-use or recycling. For example, wood shavings and sawdust have been used as animal bedding material in many industrial, domestic and research situations. In the State of Victoria, Commonwealth of Australia, alone, the recycling of wood products in the form of animal bedding has created approximately $AUD1.1 million industry. Such wood products would otherwise be of little value. As treated timber waste products have not been used in this or other recycling industries, a secondary industry has not developed for treated timber wastes which has resulted in the disposal of such treated timber waste being non-subsidised.
In accordance with the present invention, it has now been shown that treated wood products such as wood shavings and saw dust exhibit beneficial properties for caged and housed animals such as reducing respiratory infection and generally improving animal health, reducing animal waste odour and delaying biodeterioration of bedding material. The present invention provides, therefore, a valuable secondary industry for treated timber by-products.
Accordingly, one aspect of the present invention is directed to the use of a product derived from treated wood as an animal bedding material.
More particularly, the present invention contemplates the use of a product derived from treated wood as an animal bedding material, which material r
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Abbott Yvonne R.
Carone Michael J.
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