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Landfill potential threats to the environment
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Aerobic vs. anaerobic decomposition
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APES ch 16 quiz

QuestionAnswer
Landfill potential threats to the environment Always the possibility that leachate from a landfill will contaminate the underlying adjacent waterways. Anaerobic decomposition also produces carbon dioxide and methane (greenhouse gasses)
Aerobic vs. anaerobic decomposition Aerobic decomposition allows oxygen to enter waste - leads to the creation of compost. Anaerobic decomposition restricts organic waste from receiving oxygen which leads to anaerobic breakdown of the waste which leads to the release of methane.
Incineration process of burning waste materials
Incineration pro Pros: Reduces volume and mass of waste materials and sometimes generates electricity or heat.
Incineration con Cons: Tipping fees are higher at incinerators than landfills, releases air pollutants, produces ash that is deemed toxic and must be disposed of in a special landfill.
Illegal dumping and associated problems (ex: connection between tires and disease) Tires that may end up in the wrong place, sit there and collect water as it rains. This sedentary water in the tire becomes a breeding ground for mosquitoes - carrying malaria.
Dangers of E waste E-waste contains toxic metals such as mercury and cadmium which can leach out of landfills; harmful to humans and ecosystems
recycling pro Pro: reduces landfill volume
recycling con Con: costly and still requires additional energy
composting pro Pro: aerobic decomposition creates organic fertilizer
composting con Con: anaerobic decomposition of organic materials leads to production of methane; smelly
RCRA "cradel to grave" List of hazardous materials; must properly dispose of hazardous materials
CERCLA "superfund act" Tax on chemical+petroleum industries; $ used to clean up contaminated sites
Created by: maddiehubbs
 

 



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