Waste

By Sarah Brugler

Australians think that when they place their recyclable household items in their yellow bins, it is being recycled and turned into new products. This used to happen primarily in China or other southeastern Asian nations. But these countries are increasingly refusing to accept our waste. While the contractors still collect our recycled waste, they are finding it difficult to export and we don’t yet have the recycling facilities in Australia to process it. So large amounts of our recycling is currently being piled up.

Not only does this mean that recycling is not occurring like we think it is, as the stockpiles of recyclable materials in Australia continue to grow, so too does the fire risk. In Melbourne last year, residents had to endure a toxic fire in a recycling facility for almost a week.
Consistent national action is needed urgently.

The Australian Government recently consulted on introducing new targets into the National Waste Policy. While some of the targets were ok, the policy proposals to achieve them were woefully inadequate and fail to address the leadership void that currently exists in Australia regarding waste management.

Here at EJA, we are particularly concerned about the environmental disaster that is plastic pollution. Of the 322 million tonnes of plastic produced globally, 12.7 million tonnes of this ends up in the world’s oceans each year. Much of the plastic we produce is designed to be thrown away after only being used once – such as shopping bags, food packaging and containers, bottles, straws, cups and cutlery. Australians also produce more waste per capita than other comparable OECD nation – except for the UK – and most plastic rubbish found on Aussie beaches, comes from Australian sources, with the most polluted areas near cities.

It’s time for the Commonwealth Government to accept responsibility for the problem and work with the States and Territories to introduced nationally consistent and effective measures. Here are the key points we made to the Government’s proposal to update the National Waste Policy:

Businesses cannot be expected to ‘self-regulate’ when it comes to matters of plastic pollution and waste generation because most private businesses simply do not have the incentives to do so.
A national waste policy has potential to create a streamlined national approach, however targets must be mandatory for States and Territories and a national legislative framework is required to establish the right incentives, rules and regulations. Such a framework should include:

  • bans on problematic single-use plastic materials (where suitable alternatives exist);
  • Commonwealth product stewardship schemes that include extended producer responsibility to become mandatory;
  • a national container deposit scheme;
  • standardisation of landfill levies across Australia (with possible exemptions for accredited or audited recycling residuals);
  • national recycling content standards and specifications must be developed;
  • tax incentives for companies who use recycled materials and levies for use of virgin plastic products;
  • investment in the development of alternative biodegradable products;
  • and a ban on incineration of plastic in waste to energy projects (due to the health and environmental risks).

We believe that if the Government made a commitment to do the above, then we’d have much less plastic in the ocean, and a much better recycling system.

Environmental Justice Australia

The original article by Sarah Brugler can be found at Environmental Justice Australia.

Humans have burned 420 billion tonnes of carbon since the start of the industrial revolution. Half of it is still in the atmosphere.

Humans have burned 420 billion tonnes of carbon since the start of the industrial revolution. Half of it is still in the atmosphere.Reuters/Stringer

Getting climate change under control is a formidable, multifaceted challenge. Analysis by my colleagues and me suggests that staying within safe warming levels now requires removing carbon dioxide from the atmosphere, as well as reducing greenhouse gas emissions. The Conversation

The technology to do this is in its infancy and will take years, even decades, to develop, but our analysis suggests that this must be a priority. If pushed, operational large-scale systems should be available by 2050.

We created a simple climate model and looked at the implications of different levels of carbon in the ocean and the atmosphere. This lets us make projections about greenhouse warming, and see what we need to do to limit global warming to within 1.5℃ of pre-industrial temperatures – one of the ambitions of the 2015 Paris climate agreement.

To put the problem in perspective, here are some of the key numbers.

Humans have emitted 1,540 billion tonnes of carbon dioxide gas since the industrial revolution. To put it another way, that’s equivalent to burning enough coal to form a square tower 22 metres wide that reaches from Earth to the Moon.

Half of these emissions have remained in the atmosphere, causing a rise of CO₂ levels that is at least 10 times faster than any known natural increase during Earth’s long history. Most of the other half has dissolved into the ocean, causing acidification with its own detrimental impacts.

Although nature does remove CO₂, for example through growth and burial of plants and algae, we emit it at least 100 times faster than it’s eliminated. We can’t rely on natural mechanisms to handle this problem: people will need to help as well.

What’s the goal?

The Paris climate agreement aims to limit global warming to well below 2℃, and ideally no higher than 1.5℃. (Others say that 1℃ is what we should be really aiming for, although the world is already reaching and breaching this milestone.)

In our research, we considered 1℃ a better safe warming limit because any more would take us into the territory of the Eemian period, 125,000 years ago. For natural reasons, during this era the Earth warmed by a little more than 1℃. Looking back, we can see the catastrophic consequences of global temperatures staying this high over an extended period.

Sea levels during the Eemian period were up to 10 metres higher than present levels. Today, the zone within 10m of sea level is home to 10% of the world’s population, and even a 2m sea-level rise today would displace almost 200 million people.

Clearly, pushing towards an Eemian-like climate is not safe. In fact, with 2016 having been 1.2℃ warmer than the pre-industrial average, and extra warming locked in thanks to heat storage in the oceans, we may already have crossed the 1℃ average threshold. To keep warming below the 1.5℃ goal of the Paris agreement, it’s vital that we remove CO₂ from the atmosphere as well as limiting the amount we put in.

So how much CO₂ do we need to remove to prevent global disaster?

Are you a pessimist or an optimist?

Currently, humanity’s net emissions amount to roughly 37 gigatonnes of CO₂ per year, which represents 10 gigatonnes of carbon burned (a gigatonne is a billion tonnes). We need to reduce this drastically. But even with strong emissions reductions, enough carbon will remain in the atmosphere to cause unsafe warming.

Using these facts, we identified two rough scenarios for the future.

The first scenario is pessimistic. It has CO₂ emissions remaining stable after 2020. To keep warming within safe limits, we then need to remove almost 700 gigatonnes of carbon from the atmosphere and ocean, which freely exchange CO₂. To start, reforestation and improved land use can lock up to 100 gigatonnes away into trees and soils. This leaves a further 600 gigatonnes to be extracted via technological means by 2100.

Technological extraction currently costs at least US$150 per tonne. At this price, over the rest of the century, the cost would add up to US$90 trillion. This is similar in scale to current global military spending, which – if it holds steady at around US$1.6 trillion a year – will add up to roughly US$132 trillion over the same period.

The second scenario is optimistic. It assumes that we reduce emissions by 6% each year starting in 2020. We then still need to remove about 150 gigatonnes of carbon.

As before, reforestation and improved land use can account for 100 gigatonnes, leaving 50 gigatonnes to be technologically extracted by 2100. The cost for that would be US$7.5 trillion by 2100 – only 6% of the global military spend.

Of course, these numbers are a rough guide. But they do illustrate the crossroads at which we find ourselves.

The job to be done

Right now is the time to choose: without action, we’ll be locked into the pessimistic scenario within a decade. Nothing can justify burdening future generations with this enormous cost.

For success in either scenario, we need to do more than develop new technology. We also need new international legal, policy, and ethical frameworks to deal with its widespread use, including the inevitable environmental impacts.

Releasing large amounts of iron or mineral dust into the oceans could remove CO₂ by changing environmental chemistry and ecology. But doing so requires revision of international legal structures that currently forbid such activities.

Similarly, certain minerals can help remove CO₂ by increasing the weathering of rocks and enriching soils. But large-scale mining for such minerals will impact on landscapes and communities, which also requires legal and regulatory revisions.

And finally, direct CO₂ capture from the air relies on industrial-scale installations, with their own environmental and social repercussions.

Without new legal, policy, and ethical frameworks, no significant advances will be possible, no matter how great the technological developments. Progressive nations may forge ahead toward delivering the combined package.

The costs of this are high. But countries that take the lead stand to gain technology, jobs, energy independence, better health, and international gravitas.

This article was originally published at The Conversation.
By Eelco Rohling, Professor of Ocean and Climate Change, Australian National University
Read the original article.