Health and Safety
Before we look at the proper ways to dispose of waste after painting, here are some important rules for maintaining hygiene in the art room or studio:
- Work in a well-ventilated room, preferably near a window. You can use a fan to draw the fumes from the canvas away from the artist;
- Avoid eating, drinking, and smoking near the workspace. This can lead to the unintentional inhalation or ingestion of harmful substances;
- Use an appropriate type of mask when working with aerosols, dry pastels, and powdered pigments;
- Storesolvents in sealable containers to prevent them from evaporating and being inhaled. Use the minimum amount necessary and wipe them up immediately in the event of a spill;
- Oil-soaked rags must be stored in an airtight metal container due to their high flammability;
- Skin contact with paints and solvents should be kept to a minimum. When painting with your fingers, some of the pigments seep into it;
- when painting with oil paints, you can protect the skin on your hands with nitrile or vinyl gloves . Latex gloves are permeable to solvents and would not be effective in this case;
- Do not lick the brush used to shape the tip. A container of water can be used for this purpose.
Health risks and the components required for the work can be significantly reduced by replacing certain media with others. For example, traditional oil-based paints can be replaced by water-based paints, which can be cleaned with just soap and water. And for people with sensitive respiratory systems oil-based instead of dry pastels may be a better option.
Waste Disposal
It is very important for every artist to set up a waste disposal system in their workspace that is convenient for them after they finish painting.
Although this is undoubtedly the most practical option, it is extremely important not to pour undried paint, solvents, or contaminated water down the drain. This also applies to cleaning paintbrushes, which should be done in a separate container or jar, not in the sink. Anything disposed of in this improper manner ends up back in the drinking water supply or in the environment, and at the very least can clog the plumbing system. Instead, surfaces and utensils should be wiped with a cloth or paper towel, which are then disposed of in general waste bins. Brushes should be soaked in water or a cleaning solution, after which they can be rinsed, dried, and left lying flat or hung up with the bristles facing down to dry.
The solvents and water used for working and cleaning the brushes should be left in a closed jar so that the pigments settle to the bottom. The clear liquid can then be poured into another container and reused. If the water is no longer needed, let it evaporate and remove the sediment that has settled at the bottom. Soiled jars (including those from the paint itself) should be wiped clean with a cloth or paper towel and either reused or set aside for recycling.
As we mentioned, it’s a good idea to collect kitchen towels, cloths, and any other materials soiled with paint in a trash can set aside specifically for that purpose. In this regard, it is recommended, whenever possible, to buy paint in jars rather than in tubes. The designated trash can or box should be disposed of as hazardous waste.
Paint residue
WithAfter the creative session is over, the wet paints are scraped off the palette and squeezed out of the brushes, and returned to their containers whenever possible. Paints squeezed onto the palette can be covered with plastic wrap to slow down drying, and those in small containers can be sealed with a damp sponge to retain moisture. Another trick is to pack them in some kind of container and a zip-top bag and place them in the freezer. By paying attention to the amounts right from the start, we prevent the waste of paints and mediums and the need to clean them up afterward —for example, by squeezing out only as much paint as we need at the moment.
If there’s one thing to remember, it’s not to throw away paint that hasn’t hardened or hasn’t been absorbed by a cloth. With acrylics , this is convenient, since it’s easiest to clean by “peeling” it off the palette once it’s dry. Leftover oil paints can be stored in a common container to be used as a gray or brown base for future paintings. If you have larger quantities of unwanted oil paint, you can transfer it to a container or bag filled with cat litter or sawdust. This speeds up the drying process, after which it’s ready to be disposed of.
Proper storage of paints, mediums, and thinners results in less waste and saves money in the long run. It’s best to store jars and tubes with tight-fitting lids at a temperature above 10 °C. Containers seal most securely when the threads are thoroughly cleaned; some people also wrap them in kitchen or aluminum foil. This way, they can last for years. It’s also helpful to label various unlabeled solvents and oils.
Author: Martina Petrova
