Have you ever stood in front of the trash bin wondering: does this greasy paper go in the blue or brown bin? This scene plays out daily in millions of Brazilian homes, and the confusion has a real cost: recyclable materials end up in landfills simply because they were discarded in the wrong place. Selective collection is one of the most powerful tools we have to reduce the waste of natural resources, but it only works when each of us understands the rules of the game.
In Brazil, the color system for selective collection was standardized by CONAMA Resolution No. 275/2001, which established a visual coding to facilitate the separation of recyclable solid waste. Although it has existed for more than two decades, adherence is still uneven: small municipalities often lack the structure to implement all categories, and part of the population is still unaware of the meaning of each color. In 2026, with increasingly urgent environmental goals and the National Solid Waste Policy (PNRS) turning 16, understanding this system has become an act of citizenship rather than a technical detail.
This article will guide you through each color of the selective collection, explain what can and cannot go in each bin, and provide practical tips for turning this knowledge into a habit. Prepare your home, your office, and most importantly, your routine.
The Brazilian Color System: How It Was Created and Why It Matters
CONAMA Resolution 275/2001 defined seven colors to identify the different types of recyclable waste at collection points. The logic is simple: the more uniform the separation made by the population, the more efficient the work of waste picker cooperatives and recycling plants becomes. Mixed or contaminated materials often render the entire batch unusable, turning potential recyclables into waste.
The color system also has a powerful educational function: it makes visible what would normally be invisible. When you throw a PET bottle in the wrong green bin, the impact seems abstract. When you clearly see that green is for glass and red is for plastic, the correct decision becomes concrete and immediate.
It is worth remembering that, in practice, many Brazilian municipalities operate with a simplified two-stream model: one for dry recyclables (mixed) and another for waste and organics. This does not invalidate the color system but means you should always check the specific rules of your city on the city hall or collection company’s website.
Each Recycling Bin Color and What It Means
Red: Plastic
The red bin is for plastic materials. It is probably the most used bin in daily life, given the omnipresence of plastic packaging in modern life.
What can go in the red bin:
- PET bottles (sodas, water, juices)
- Cleaning product containers (well washed)
- Food containers (yogurt, margarine, etc.)
- Plastic bags
- Plastic caps
- Rigid straws
- Shampoo and conditioner bottles (clean)
What CANNOT go in the red bin:
- Containers with food residue (need to be rinsed first)
- Dirty or heavily contaminated plastics
- Disposable diapers
- Sanitary pads
- Metalized plastic (snack packaging, for example, is generally not recyclable)
Blue: Paper and Cardboard
The blue bin receives paper and cardboard — materials that, when recycled correctly, can be processed multiple times and save significant volumes of wood and water.
What can go in the blue bin:
- Cardboard boxes (dismantled and dry)
- Newspapers and magazines
- Sheets of paper, notebooks, and books
- Long-life milk and juice boxes (known as carton packaging — check if your city has specific collection for them)
- Envelopes
- Office paper
- Medicine boxes
What CANNOT go in the blue bin:
- Greasy paper (frying paper, dirty pizza boxes)
- Carbon paper or photographs
- Used toilet paper
- Used napkins
- Plasticized paper
Green: Glass
The green bin is exclusive for glass, a material that has an impressive characteristic: it can be recycled infinitely without losing quality. Recycling glass consistently saves energy and virgin raw materials.
What can go in the green bin:
- Beverage bottles (beer, wine, soda)
- Preserve and condiment jars
- Perfume and cosmetic bottles (without the metal pump)
- Broken glasses and goblets (wrap for the safety of waste collectors)
What CANNOT go in the green bin:
- Mirrors
- Tempered glass (windows, windshields)
- Lamps (require special disposal)
- Lead crystal
- Ceramics and porcelain
Yellow: Metal
The yellow bin receives recyclable metals, especially aluminum and steel. Brazil has a remarkable history in aluminum can recycling, with consistently high rates over the years, driven in part by the market value of the material.
What can go in the yellow bin:
- Aluminum cans (soda, beer)
- Steel cans (tuna, corn, peas)
- Metal lids
- Clean aluminum foil
- Small metal household items
What CANNOT go in the yellow bin:
- Batteries and accumulators (require special disposal at collection points)
- Cans with paint or chemical residues
- Aerosols (must be completely empty; check local policy)
Brown: Organic
The brown bin is for organic waste — that is, all biological material that can be composted.
What can go in the brown bin:
- Fruit, vegetable, and green waste
- Coffee grounds and paper filters
- Eggshells
- Food scraps in general
- Dry leaves and small branches
- Hair and nails
Organic waste has an ideal destination: composting. When diverted from landfills, it stops generating methane (a potent greenhouse gas) and turns into fertilizer. If you live in an apartment, it’s worth researching compact home composters or organic collection points in your city.
Black: Wood
The black bin is less common in everyday life but appears at voluntary delivery points and in companies. It is intended for wood waste such as pallets, crates, and furniture scraps.
White: Health Service Waste
The white bin is reserved for health waste — syringes, dressings, expired medications. This material should never go in regular household waste. Pharmacies, health centers, and health units have a legal obligation to receive and properly dispose of this waste.
Orange: Hazardous Waste
The orange bin identifies hazardous waste such as chemicals, paints, solvents, and batteries. They also require special disposal at specific points.
Purple: Radioactive Waste
The purple bin is for radioactive waste, exclusively used in industrial and hospital settings — completely outside the domestic scope.
Summary Table of Colors
Color Material Practical Examples Red Plastic PET bottle, yogurt container, plastic bag Blue Paper and Cardboard Box, newspaper, sheet of paper Green Glass Bottle, preserve jar Yellow Metal Aluminum can, tuna can Brown Organic Food scraps, coffee grounds Black Wood Pallets, furniture scraps White Health Syringes, expired medications Orange Hazardous Batteries, paints, solvents Purple Radioactive Industrial/hospital use How to Implement Selective Collection in Practice: Step by Step
- Find out your city’s system. Visit the city hall’s website or call the environmental department. Many cities operate with simplified selective collection (dry and wet) instead of the full color system.
- Set up a sorting station at home. You don’t need nine bins. Generally, four are enough: organic, dry recyclables (paper, plastic, metal, and glass together, if the municipality mixes), waste, and a separate space for special waste (batteries, medications).
- Wash containers before discarding. A bottle with soda residue or a container with sauce remnants can contaminate an entire load of recyclables. A quick rinse solves it.
- Dismantle cardboard boxes. They take up less space and facilitate sorting work.
- Identify nearby voluntary delivery points. For glass, batteries, used cooking oil, and electronics, there are specific points in supermarkets, pharmacies, and municipal ecopoints.
- Support waste picker cooperatives. In many cities, you can directly send your recyclables to cooperatives, which earn money from selling the material. Besides recycling, you generate income for essential workers in the waste chain.
- Educate those who live with you. Selective collection only truly works when everyone in the house participates. A simple conversation and a poster with the colors on the wall make a difference.
Common Mistakes That Compromise Recycling
- Discarding packaging with food is one of the most frequent and harmful mistakes. It contaminates other materials.
- Placing glass with other dry recyclables can injure waste pickers during manual sorting.
- Throwing batteries and accumulators in regular trash releases heavy metals into the soil and water — a mistake with serious consequences for the environment and health.
- Thinking snack packaging is recyclable because it looks like plastic. Most are made of metalized plastic and have no processing available in most Brazilian cities.
- Giving up due to lack of collection in the neighborhood. Even without door-to-door selective collection, you can separate and take to ecopoints.
If you also want to go beyond disposal and think about how to reuse before even recycling, it’s worth checking out the ideas in Reusing Packaging Has Never Been So Creative.
Waste That Requires Special Disposal
Some materials do not fit into any of the common colored bins and deserve special attention:
- Used cooking oil: Take to ecopoints or supermarket collection programs. One liter of oil can contaminate up to a million liters of water.
- Electronics and appliances (e-waste): Manufacturers are legally required to take back products at the end of their life cycle. Check the brand’s website.
- Batteries and accumulators: Pharmacies, supermarkets, and electronics stores usually have collectors.
- Expired medications: Pharmacies participating in the Correct Medication Disposal Program receive the products.
- Fluorescent and LED lamps: Have specific collection points in electrical goods stores and ecopoints.
Conclusion: One Color at a Time
Understanding the colors of selective collection is a simple step, but it multiplies the impact of every disposal you make. It’s not about immediate perfection — it’s about consistent progress. If today you still confuse blue with red, tomorrow you can have this guide posted in your kitchen. If you still don’t wash containers, start this week.
Selective collection works like a chain: each link strengthens the next. When you separate correctly, waste pickers work more safely and efficiently, materials reach plants with quality, natural resources are preserved, and the cycle closes. You are an essential part of this chain.
Start with one color. Then with two. And invite those around you to do the same. Helping the planet rarely requires grand gestures — but always demands concrete, repeated, intentional actions.
Back To Top - Electronics and appliances (e-waste): Manufacturers are legally required to take back products at the end of their life cycle. Check the brand’s website.
- Placing glass with other dry recyclables can injure waste pickers during manual sorting.
- Discarding packaging with food is one of the most frequent and harmful mistakes. It contaminates other materials.
- Educate those who live with you. Selective collection only truly works when everyone in the house participates. A simple conversation and a poster with the colors on the wall make a difference.
- Support waste picker cooperatives. In many cities, you can directly send your recyclables to cooperatives, which earn money from selling the material. Besides recycling, you generate income for essential workers in the waste chain.
- Identify nearby voluntary delivery points. For glass, batteries, used cooking oil, and electronics, there are specific points in supermarkets, pharmacies, and municipal ecopoints.
- Dismantle cardboard boxes. They take up less space and facilitate sorting work.
- Wash containers before discarding. A bottle with soda residue or a container with sauce remnants can contaminate an entire load of recyclables. A quick rinse solves it.
- Set up a sorting station at home. You don’t need nine bins. Generally, four are enough: organic, dry recyclables (paper, plastic, metal, and glass together, if the municipality mixes), waste, and a separate space for special waste (batteries, medications).
- Find out your city’s system. Visit the city hall’s website or call the environmental department. Many cities operate with simplified selective collection (dry and wet) instead of the full color system.
