How do animals produce waste?

Waste of animal and vegetable origin is considered as

Organic wastes are all elements that are wastes or residues of animal and/or vegetable origin. These wastes have the capacity to degrade rapidly, transforming into another type of organic matter.

In Chile, organic wastes are of domestic, commercial or industrial origin.    Organic waste is the most generated and the least managed. It represents about 50% of municipal solid waste and is mainly disposed of in sanitary landfills.    This has a strong environmental impact: the generation of greenhouse gases and the production of leachates.

Organic waste has a strong environmental impact and can pollute the atmosphere, soil and water (surface and groundwater). This is due to its high content of unstable and immature organic matter.    Also mineral elements, recalcitrant organic compounds, heavy metals, phytotoxins, plant and animal pathogens, among others, which are highly polluting.

Household waste

Animal wastes are all organic substances from the raising or slaughtering of animals, including livestock excrement and urine, by-products from the meat and dairy industry, and wastes from fish farms and land-based aquaculture. Animal wastes from meat processing include hair, blood, feathers, hides, skins, bones, hides, beaks, fat and liquids. These wastes can contain organic matter and pathogenic microorganisms and give off odors. They can also be a source of bacteria and nitrates, which are contaminants of drinking water and cause human illness.

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Farmers often use animal waste as fertilizer and apply it to the soil. If applied too much or improperly, they can contaminate lakes, streams and groundwater sources and harm human health.

Types of waste resulting from food

Identify the wastes produced in the laboratory activity and request the most appropriate container for each type depending on the state (liquid, solid or gel), the speed of their generation and the space available in the laboratory.

Laboratory waste is classified into different categories according to its nature, hazardousness and final destination. Please classify each waste you generate into one of the groups in the following table (Consult SEPA for any doubt or clarification about the classification of waste). Download the corresponding label, filling in the blanks (substance/s contained in the container, applicant’s data). They are in fillable pdf format. For your convenience, the “applicant’s data” fields are autocopied on all labels once they have been written on any of them. Attach them to the container before you start filling it, that way everyone in your group will know what is being deposited in it.

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VERY IMPORTANT: the labels include a hazard pictogram that must be printed in color, in accordance with the REACH Regulation (Registration, Evaluation, Authorization and Restriction of Chemicals), and preferably on four-label self-adhesive paper (If you do not have a color printer, print in black and white and color the border of the hazard pictogram with a red marker pen).

Examples of animal waste

Biodigesters are presented as a technology that allows waste to be given a second chance to generate energy in a sustainable way. Discover in this article what a biodigester is, how biogas works and how you can build a homemade one to generate gas. Technologies like these bring us closer to a more sustainable future.

A biodigester is a hermetically sealed container containing organic waste of plant or animal origin (decomposing meat, excrement…). A group of microorganisms present in the organic waste produce a reaction known as anaerobic fermentation, from which energy can be obtained.

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Biodigesters are an economical and effective alternative in rural communities around the world. They meet the energy demands of these populations and provide a suitable means of handling human and animal waste. In short, they are an effective alternative to address global warming.

The second product of organic matter digestion is biofertilizer. This is an excellent fertilizer and soil conditioner with a high concentration of nutrients essential for good plant growth. These include nitrogen, phosphorus, potassium and microelements.