Recycling and Sustainability Honor - Advanced

Nature Study

Requirements

1. How does the selective collection of solid waste work in the following places:
   • Residences
   • Businesses

   Answer: Selective collection separates waste by type (organic, plastic, paper/cardboard, glass, metal) at the source, so that it can later be collected and sent for recycling. By location: 1) Homes/condominiums — each family separates dry waste from organic and places it in proper bags/bins on the days of the municipal or cooperative selective collection; 2) Schools/churches — colored bins in common areas + environmental education for students/members; 3) Companies/businesses — internal collection points, a contract with cooperatives for the pickup of recyclable material; 4) Events and public spaces — eco-points and bins identified by color for correct disposal by the public. In all cases, the clean and separated material goes to sorting, baling, and sale to the recycling industry. — Law 12,305/2010 (the National Solid Waste Policy) requires large generators to make a management plan. Waste-picker cooperatives gained legal status and generate income for more than 800 thousand families in Brazil, according to the MNCR (National Movement of Waste Pickers).

2. How does recycling influence the social context by turning into an alternative source of income for various families?

   Answer: Recycling generates income for waste pickers and cooperatives, selling separated materials (cardboard, aluminum, plastic) to industry. In Brazil, more than 800 thousand people live off waste picking, according to the MNCR. — Law 12,305/2010 recognizes waste pickers as environmental agents. Cooperatives sell directly to industry without a middleman, multiplying income by 2-3 times. Cities such as Curitiba and Diadema have formal partnerships with cooperatives, reducing landfill use and generating jobs.

3. Visit a solid waste treatment cooperative and find out which methods are used to reuse the materials.

   Answer: You should schedule a visit to a local cooperative, observe the sorting conveyor (manual separation by type), the baling into bales, the washing and grinding of plastics, and the sale to industries. — Most Brazilian cooperatives use a manual sorting conveyor because it is cheap and provides jobs. Plastics go through flotation to separate PET (which sinks) from HDPE (which floats). Aluminum is baled into bales of 250-500 kg that go to smelting.

4. Find out how the structure of a sanitary landfill works. Cite the main benefits and drawbacks.

   Answer: Structure of a sanitary landfill (from bottom to top): a base with an impermeable liner (geomembrane) over compacted soil to isolate the water table; a system of drains to capture the leachate (toxic liquid), which is treated; pipes to capture methane gas (burned or used as energy); layers of compacted waste covered daily with soil; and monitoring of the surrounding wells. Benefits: it protects the soil and groundwater from contamination, controls odors and vectors (rats, flies), allows the use of methane as energy, and is an environmentally correct disposal method. Drawbacks: it occupies large areas that remain unusable for years, has a high cost of operation and maintenance, has a limited lifespan (it fills up and a new landfill is needed), generates greenhouse gases, and poses a risk of contamination if the liner or drains fail. — ABNT's NBR 8,419 standard regulates sanitary landfills in Brazil. The captured methane can generate energy (the Caieiras-SP landfill generates 30 MW). Open-air dumps, still common in Brazil, are prohibited by Law 12,305/2010 and must be replaced by proper sanitary landfills.

5. Make at least 2 toys using recyclable materials. These toys must be sent to underprivileged children.

   Answer: Build at least 2 toys with reused materials (PET bottle, cardboard box, bottle caps, toilet paper roll). Examples: a pull-string toy with bottles, a cardboard car, a shuttlecock with a plastic bag, a memory game with bottle caps. — Donation combines environmental education with social responsibility, a central value of the Pathfinder program. NGOs such as GRAACC and municipal shelters accept donations of new, gently used, or handmade toys. Research local groups beforehand to ensure the delivery reaches the target audience.

6. Restore an object that was going to be thrown away into something useful for your home.

   Answer: Choose an object destined for disposal (old furniture, glass bottle, coffee cans) and turn it into something useful. Examples: a bottle becoming a lamp, a can becoming a planter, a chair being sanded and painted, a drawer becoming a flower box, a tire becoming a padded ottoman for the living room. — This process is called upcycling — adding value to something discarded, unlike recycling, which destroys in order to remake. Upcycling grew 350% as a trend on Pinterest between 2018 and 2023, and drives a billion-dollar market of sustainable furniture and decoration.

7. Develop a technique to effectively recycle leftover wood, ropes, or bamboo after camps.

   Answer: Leftovers can become firewood for future campfires (dry wood), smaller pioneering projects (cut bamboo), mats or supports (braided ropes), decorative signs for the club, or compost (wood chips). — Natural sisal ropes decompose in 6 months in the soil, improving its structure. Untreated bamboo lasts 5-10 years as firewood or a tool. Wood can become handmade charcoal by burning slowly in a closed container, a centuries-old Brazilian rural tradition.

8. Produce a video or skit presenting at least 5 tips on how to improve the planet using recycling.

   Answer: Audiovisual content has up to 6x greater reach than text, according to HubSpot. Skits in schools and churches generate local engagement and spread environmental messages. Brazil recycles only 4% of the waste it generates, according to ABRELPE — far below developed countries.

9. In places where there is a selective collection system, bins of different colors are used. Mention what type of material is identified by each color:
   • Blue
   • Red
   • Yellow
   • Brown
   • Green

   Answer: According to the color standard of CONAMA Resolution 275/2001: 1) Blue: paper and cardboard (newspapers, magazines, boxes, notebooks). 2) Red: plastic (PET bottles, packaging, plastic bags, containers). 3) Yellow: metal (aluminum and steel cans, lids, hardware). 4) Brown: organic waste (food scraps, peels, garden trimmings). 5) Green: glass (bottles, jars, and glass containers). — CONAMA Resolution 275/2001 also includes black (wood), white (health/contaminated), orange (hazardous), purple (radioactive), and gray (non-recyclable). The standardization is international, with similar colors in most countries. Learning the colors makes correct separation easier.

10. How should batteries and fluorescent lamps be disposed of? Where is the nearest collection point in your city?

    Answer: Batteries and fluorescent lamps contain heavy metals (mercury, cadmium) and must go to special collection points — never in the regular trash. Research points in your city: large supermarkets, banks, electronics stores, and municipal eco-points. — Law 12,305/2010 establishes mandatory reverse logistics — manufacturers must take the products back. A single fluorescent lamp can contaminate 20 thousand liters of water. Apps such as 'eCycle' and 'Reciclus' show nearby collection points throughout Brazil to make disposal easier.