Burning Plastic Bags: Is It Eco-Friendly?

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Discussion Overview

The discussion centers around the environmental implications of burning plastic bags compared to allowing them to degrade naturally. Participants explore various perspectives on the ecological impact of both methods, considering factors such as carbon emissions, marine life toxicity, and the practicality of recycling versus burning.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants question whether burning plastic bags is more environmentally friendly than allowing them to degrade, noting that plastics take thousands of years to break down.
  • Others argue that burning increases carbon dioxide emissions and may not be necessary if plastics can degrade safely over time.
  • Concerns are raised about incomplete combustion leading to carbon monoxide production during burning.
  • One viewpoint suggests that burning plastics could make their constituents available for biological processes more quickly than degradation in the environment.
  • Another participant emphasizes the importance of proper waste disposal to prevent plastics from entering oceans, suggesting that recycling and reusing should be prioritized over burning.
  • Some participants highlight the challenges of recycling plastics due to the complexity of different types and the potential for lower quality recycled materials.
  • There is a discussion about the energy potential of burning plastics, with some claiming it can yield significant energy compared to other methods.
  • Concerns are raised about the potential toxic byproducts of burning plastics and the impact on the ozone layer.
  • One participant mentions the need for high-temperature burning to minimize smoke and pollutants.
  • Another participant questions the ecological impact of plastic in landfills versus the potential harm from burning.

Areas of Agreement / Disagreement

Participants express a range of views, with no clear consensus on whether burning plastic bags is a better option than allowing them to degrade or recycling them. There are competing perspectives on the environmental impacts of each method, and the discussion remains unresolved.

Contextual Notes

Participants note various assumptions, such as the conditions under which burning occurs and the definitions of "environmentally friendly." The discussion also highlights the complexities of plastic degradation and recycling processes, as well as the potential for harmful emissions from burning.

Necross
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My question is that would it be more environmentally friendly to burn plastics bags rather than letting them degrade? They take thousands of years to do so and even then many plastics do not completely break down beyond the molecular level...so instead of letting them hang around in the environment why do we not just burn them? Plastics are mainly made of hydrocarbons, so burning them would release (mainly) carbon dioxide and water. Again I'm talking about the majority of plastics.
 
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Define environmentally friendly. Plastic that slowly degrades to water and carbon dioxide is not necessarily dangerous to environment - so why burn it and increase carbon dioxide emission?
 
Depending on how you burn it it won't neccesarily be complete combustion, which means production of carbon monoxide.
 
Borek said:
Define environmentally friendly. Plastic that slowly degrades to water and carbon dioxide is not necessarily dangerous to environment - so why burn it and increase carbon dioxide emission?

Currently, majority of our waste that does not end up in landfills, ends up in the oceans. There the plastic is bleached and broken down into smaller and smaller granules. This is then swallowed by small fish and the higher you go up the food chain the more plastic fish/oceanic life contain. This stuff is toxic to them. In addition in this form plastics can't be utilized by microbes and degraded..but if burnt plants could use the carbon dioxide etc... By burning we make the constituents of plastic available for life to utilize much faster instead of littering the planet and polluting our oceans.
 
Plastic that ends in the oceans lands there not because it wasn't burnt, but because it was thrown away where it shouldn't be. So before burning it, you have to collect it - and once it is collected it can be safely put in landfills, it doesn't have to be burnt. Even better will be to reuse it after collecting.

Simple plastics - like polyethylene - are not toxic. They can be made toxic by plasticizers or dyes, but if these substances are present in plastic, it usually means that burning it cleanly and safely is much more difficult.

I don't mean that burning plastics is an absolutely bad idea, but before trying we should take a lot of factors into account, to be sure that solution is properly addressed and is not worse than the problem itself.
 
Is there a specific reason to consider burning rather than recycling?
 
Recycling is better than burning. Both are better than landfill/nothing.
Burning plastic gives up to 80% of the oil equivalent.

So until we've abolished the practice of burning oil, burning plastic is no big deal IMO.
 
How many times can you recycle a plastic bag? And how safe is the plastic in landfills, etc...? The viewpoint I take for burning is that by burning the plastic, the constituents are readily put back into the bio/chem cycle of the planet. Whereas on the otherhand if plastic just remains in its normal form it just breaks down into smaller and smaller pieces and take a very very long time to degrade...Sure burning it would release CO2 into the atmosphere but that would be better than poisoning marine and other animal life...
 
Necross said:
Sure burning it would release CO2 into the atmosphere but that would be better than poisoning marine and other animal life...

Do you have any data to support that claim?

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  • #10
Necross said:
My question is that would it be more environmentally friendly to burn plastics bags rather than letting them degrade?
Burning plastic is only good is if it's burned at high temperatures with a lot of oxygen. This is true for almost all hydrocarbons. You can test this by looking at how much smoke comes from your car (none) vs how much smoke comes from burning gasoline in a tin can (lots).

Lots of garbage is already burned to create electricity, and it's very clean when done properly.
http://discovermagazine.com/2007/may/the-ultimate-garbage-disposal

Is there a specific reason to consider burning rather than recycling?
Recycling plastic is difficult because things like polystyrene should not be mixed with polyethylene or polyurethane, and the recycled plastic is often lower quality and more expensive than new plastic. Burning plastic is easy because polystyrene, polyethylene, and polyurethane can be mixed together, color doesn't matter, and the energy it produces is just as good as energy produced from any other power plant. Using the plastic for energy is also more cost effective.
 
  • #11
Do you know what temperature plastic would have to be burned at to produce less smoke?
 
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  • #12
Borek said:
Plastic that ends in the oceans lands there not because it wasn't burnt[...] before burning it, you have to collect it - and once it is collected it can be safely put in landfills
alxm said:
Recycling is better than burning. Both are better than landfill/nothing.
Burning plastic gives up to 80% of the oil equivalent. So until we've abolished the practice of burning oil, burning plastic is no big deal IMO.
Let's not endorse something that is equivalent* to a practice we are trying to abolish.

*or worse, if it just un-sequesters 20% more carbon
Borek said:
Necross said:
Sure burning it would release CO2 into the atmosphere but that would be better than poisoning marine and other animal life...
Do you have any data to support that claim?
Indeed. If one's motivation is marine well-being (rather than just knee-jerking to the cause that presents the most emotionally engaging simplistic photographs), and even (implausibly) assuming all landfill-plastic somehow escapes into the ocean, it's not clear that bits of plastic threaten the existence of any species as dramatically as the rapid acidification caused by our "terraforming" emissions threatens entire ocean ecosystems.
 
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  • #13
All of us know that burning plastics can damage our ozone layer but still everyone ignores that and how about the plastic bottles, toys, and vessels? Is there a way on how to segregate them properly without burning them?
I'd read an article about segregation of this plastic by means of cornstarch. Yea! starch! Just put the starch in the plastic and that's it. The bacteria will eat the starch and so on the plastic.
 
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  • #14
Necross said:
The viewpoint I take for burning is that by burning the plastic, the constituents are readily put back into the bio/chem cycle of the planet.
I've never heard of burning garbage and producing toxic byproducts described with such a positive spin!

Seriously, they're pollutants in that form; we don't really want them back in the system.

But if they must go back into the system, it is better to release them over a longer time, so that the affected ecology has time to absorb them.
 

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