Waste Flashcards

1
Q

Is overall waste production increasing globally? How about on a per capita basis?

A

Yes. On a per capita basis, waste production varies depending on factors such as income levels, lifestyle choices, and waste management practices. In many developed countries, per capita waste generation is high due to higher levels of consumption, disposable goods, and packaging materials. In developing countries, per capita waste generation may be lower, however, rapid urbanization and industrialization can lead to an increase

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2
Q

On average, how much waste is produced per person in the USA per day?

A

Approximately 4.9 pounds

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3
Q

Where does most of our waste end up?

A

Landfills

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4
Q

What types of waste management categories are increasing throughout time?

A

Recycling and composting

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5
Q

What materials make up the majority of materials in our landfills? In our recycling stream?

A

In terms of landfills, it consists of organic waste such as food scraps, yard waste, and paper products. Plastics, metals, and glass also make up a significant portion. In terms of the recycling stream, materials such as paper, cardboard, plastics, metals, and class are commonly recycled

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6
Q

What is the Precautionary Principle?

A

In the absence of scientific certainty, if an action or policy has potential to cause farm to human health or the environment, precautionary measures should be taken to prevent or minimize such harm

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7
Q

What was the main outcome of the Stockholm Convention? How did it relate to the Precautionary Principle

A

It aimed to control and eventually eliminate harmful chemicals called persistent organic pollutants (POPs). It required countries to take steps to reduce the production and use of these chemicals and to monitor their impact on the environment. This agreement was guided by the Precautionary Principle.

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8
Q

What different waste management options exist?

A

Reduce, reuse, recycle, compost, waste-to-energy, landfilling, waste-to-materials

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9
Q

What are some potential limitations of landfills?

A

They produce significant amounts of methane as organic waste decomposes anaerobically in the absence of oxygen. They can also generate leachate, a toxic liquid that forms as rainwater percolates through the waste and picks up contaminants. They can emit volatile organic compounds (VOCs), which are hazardous air pollutants

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10
Q

Why may landfills not be a viable solution in the future?

A

Climate change may exacerbate the environmental impacts of landfills, such as increased risks of flooding, erosion, and leachate contamination. Depletion of available land for landfilling, scarcity of suitable landfill sites, and competition for land use from over development activities may constrain the availability and expansion of landfill capacity.

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11
Q

Reduce

A

Refers to the minimizing the amount of waste generated int he first place

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12
Q

Reuse

A

Involves finding alternative uses for items instead of discarding them after a single use

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13
Q

Recycle

A

Involves collecting and processing materials that would otherwise be discarded into new products

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14
Q

Repurpose

A

Involves finding creative ways to use items for new purposes or functions

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15
Q

Refuse

A

Refers to actively choosing not to purchase or accept items that are unnecessary, wasteful, or harmful to the environment

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16
Q

What resource recovery and reduction measures exist? (aluminum, paper,
cardboard, glass, steel, tires, plastics)

A

Aluminum
- highly recyclable and can be melted down and reused indefinitely without losing its quality
- Encouraging the use of aluminum products with minimal packaging or promoting reusable aluminum containers can help reduce waste generation

Paper and cardboard
- Widely recyclable materials
- Implementing paperless initiatives such as digital communication and electronic billing can help reduce paper consumption and waste

Glass
- 100% recyclable and can be recycled indefinitely without losing quality
- Promoting reusable glass containers and bottles or implementing refillable beverage programs can help reduce single-use glass packaging waste

Steel
- Highly recyclable and can be melted down and reused in the production of new steel products
- Encouraging the use of steel products with minimal packaging or promoting reusable steel containers can help reduce waste generation

Tires
- Can be recycled into various products such as crumb rubber for use in playgrounds, athletic fields, and asphalt paving
- Implementing tire stewardship programs for tire take-back initiatives can incentivize tire manufacturers to collect and recycle end-of-life tires responsibly

Plastics
- Certain types of plastics such as PET and HDPE are widely recyclable
- Promoting alternatives to single-use plastics, such as reusable bags, containers, and utensils, or encouraging plastic-free initiatives can help reduce plastic waste generation

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17
Q

Pollution Prevention, involvement and solutions

A

Involves identifying, minimizing, or eliminating the release of pollutants into the environment to prevent or reduce environmental degradation and adverse impacts on human health. It encompasses a range of strategies and approaches to address pollution at its source and promote sustainable practices across various sectors

18
Q

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)

A

Enacted in 1980 to address the cleanup of hazardous waste sites and the management of hazardous substances

19
Q

Resource Conservation and Recovery Act (RCRA)

A

Enacted in 1976 and amended several times since, regulates the management of hazardous and non-hazardous solid waste, as well as hazardous waste disposal facilities

20
Q

Toxic Substances Control Act (TCSA)

A

Enacted in 1976 and amended by the Frank R. Lautenberg Chemical Safety for the 21st Century Act in 2016, regulates the manufacture, importation, use, and disposal of chemical substances in the United States

21
Q

What are human health hazards of major types of waste?

A

Hazardous waste
- Toxic chemical exposure
- Fire and explosion risks

Biomedical waste
- Infection transmission
- Occupational hazards

Municipal solid waste
- Air and water pollution
- Vector attraction

Electronic waste (E-waste)
- Chemical exposure
- Data security risks

22
Q

Ignitable waste

A

Refers to waste materials that are capable of catching fire easily and burning spontaneously under certain conditions, such as exposure to heat, sparks, or open flames

23
Q

Corrosive waste

A

Refers to waste materials that are highly acidic or alkaline and have the ability to corrode metals, dissolve tissues, or damage materials upon contact

24
Q

Reactive waste

A

Refers to waste materials that are unstable, reactive, or capable of undergoing violent chemical reactions under certain conditions, such as heat, pressure, or exposure to incompatible substances

25
Q

Toxic/poisonous waste

A

Refers to waste materials that contain hazardous substances at concentrations exceeding regulatory thresholds and have the potential to cause adverse health effects to humans, animals, or ecosystems

26
Q

Pollution

A

The presence or introduction of contaminants into the environment that cause adverse effects on living organisms and ecosystems

27
Q

Waste vs garbage

A

Waste refers to any unwanted or discarded material whereas garbage specifically refers to organic waste such as food scraps

28
Q

Municipal Solid Waste (MSW)

A

Encompasses household, commercial, and institutional waste streams, excluding hazardous and industrial waste

29
Q

Hazardous vs toxic waste

A

Hazardous waste contains substances that pose substantial or potential threats to human health or the environment, while toxic waste specifically refers to waste containing poisonous substances that can cause harm upon exposure

30
Q

Toxins

A

Harmful substances that can cause adverse effects on living organisms

31
Q

Acute vs chronic toxicity

A

Acute toxicity refers to the immediate or short-term effects of exposure, while chronic toxicity refers to the long-term effects that develop over time

32
Q

Carcinogenic substances

A

Have the potential to cause cancer

33
Q

Teratogenic substances

A

Can cause birth defects in developing fetuses

34
Q

Mutagenic substances

A

Can induce genetic mutations in living organisms

35
Q

Infectious waste

A

includes materials contaminated with pathogens such as bacteria, viruses, and parasites, posing risks of infections to humans and animals

36
Q

Persistent Organic Pollutants (POPs)

A

Toxic chemicals that persist in the environment, bioaccumulate in living organisms, and pose risks to human health and ecosystems

37
Q

Incineration

A

A waste treatment process that involves burning waste materials at high temperatures to convert them into ash, gases, and heat energy

38
Q

Landfills

A

Disposal sites for solid waste, with secure landfills designed to precent environmental contamination and sanitary landfills engineered to minimize health and environmental risks through containment and management practices

39
Q

Resource recovery

A

Involves the extraction of valuable materials, energy, or resources from waste streams through processes such as recycling, composting, and anaerobic digestion

40
Q

Aerobic vs anaerobic respiration/conditions

A

Aerobic respiration occurs in the presence of oxygen, while anaerobic respiration occurs in the absence of oxygen. Conditions within a landfill change over time, initially aerobic but becoming increasingly anerobic as oxygen is depleted, impacting waste decomposition and gas production

41
Q

Bioaccumulation vs biomagnification

A

Bioaccumulation is the accumulation of a substance in the tissues of an organism over time, while biomagnification is the increase in concentration of a substance as it moves up the food chain, posing risks to higher trophic levels