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China’s trash ban lifts lid on global recycling woes but also offers opportunity

MD Staff

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China’s decision to ban imports of foreign waste, including some plastics, has reverberated around the world, with recycling operations in other countries struggling to deal with the new reality. But is this an opportunity wrapped in a crisis?

Some experts argue that developed nations will, at last, have to face up to the true cost of their plastic addiction instead of shipping the problem to China, which has taken nearly half the world’s waste since 1992.

This could spur much-needed investment in domestic recycling facilities as well as innovation in plastic manufacturing to make products more suited to repurposing. It could also invigorate the vociferous public campaign to change our throwaway culture.

Last year, China decided to ban imports of 24 categories of solid waste, including certain types of plastics, paper and textiles, citing environmental and health concerns. Essentially, it is seeking to upgrade its economy and deal more effectively with its own growing mounds of trash. The material it was importing added 10-13 per cent to its overall waste levels.

Another problem was the poor quality of waste imports, which made them more difficult to recycle and consequently hit profits for the Chinese companies involved.

The ban came into force in January and the effects are now being tallied.

In a new study, published in June in Science Advances, scientists from the University of Georgia (UGA) found that 111 million metric tons of plastic waste will be displaced by China’s new policy by 2030. All that rubbish will have to go somewhere else.

The ban is already beginning to bite. The Washington Post says states such as Massachusetts and Oregon are lifting restrictions on pouring recyclable material into landfills.

AFP has reported that significant stockpiles of recyclables are piling up in the US, with some municipalities saying they will no longer collect certain materials or send them to landfills, while some recycling facilities are storing the extra waste outside or in parking lots.

“Our team has been and will be closely monitoring reports and impacts from the ban and have certainly heard that waste is accumulating within the borders of countries that have long depended on China or other countries to import their plastic waste,” said Amy Brooks, a doctoral student at UGA’s College of Engineering and lead author of the plastic waste study.

The ban has also exposed systemic weaknesses in recycling processes in the United States. The National Recycling Coalition (NRC) said in May that the ban exposed the problems caused by dirty recyclables. The introduction of single-stream recycling in the United States, which mixes paper, metal, glass and plastics — means recyclables are less pure and less valuable.

“The good news and bad news is that customer enthusiasm for recycling is strong. The public wants to recycle, but they express that enthusiasm by recycling materials that are not eligible.  A combination of ‘wishful recycling’ and insufficient enforcement of quality is proving very damaging to the industry – abysmal and volatile markets, a dirty product that is not a reliable ‘commodity’, closed plants, and programs that are hurting economically,” Marjorie Griek, the NRC’s executive director, said in a statement.

“We cannot continue to act and behave as if business as usual will offer a solution to today’s issues. We must fundamentally shift how we speak to the public, how we collect and process our recyclables, and what our end markets accept and utilize to truly recycle,” Griek said.

Such changes will, of course, take time. As will new investment in recycling facilities to fill the gap left by China, which imported around 7 million tonnes of waste in 2016. This is even more concerning when one realises that, to date, only 9 per cent of waste has been recycled globally, with most of it ending up in landfills or in the environment, including in our seas.

Some developed countries reacted to the ban by sending their waste to other Southeast Asian countries, such as Thailand and Malaysia, and some Chinese recyclers have opened factories in nearby countries to cash in on this new business.

However, experts point out that some of these countries do not have the capacity to deal with the waste influx and are already considering imposing restrictions of their own. Another concern is that Asia is already home to five of the world’s top marine plastic polluters and sending more trash to countries that are ill-equipped to deal with it will simply exacerbate that problem.

Since the Chinese ban, Britain’s waste exports to Malaysia have tripled, the Financial Times has reported, with the domestic recycling industry seen to be languishing and underfunded.

Peter Skelton of the sustainability organisation WRAP, believes the government, waste management firms and local authorities can rise to the challenge.

“We’ve been reliant on export markets for a lot of our recycling and that’s got to change. In some ways, it’s a forced decision,” Skelton said. “There’s been a great response from the waste and recycling organisations … because they see the landscape has shifted,” he said.

Governments also have a role to play by investing in recycling and waste management, he added. The British government is due to publish a Waste and Resources strategy later this year.

UGA’s Brooks agrees that governments must step up by educating people about recycling and encouraging innovation.

China’s ban has also shone a spotlight on the parlous state of international regulation about plastic waste.

The UGA study argues that the International Basel Convention, which governs the export of hazardous and other waste, could be applied to plastic waste if the latter was characterized as “waste requiring special consideration”. It could then be regulated while knowledge could be shared and standards harmonised.

One potentially positive side-effect of China’s ban has been to focus attention on the need for a more sustainable circular economy, where resources like plastics will be kept in use for as long as possible. However, with oil prices relatively low, virgin plastic is cheaper than recycled plastic — a financial obstacle that must be surmounted.

“This is definitely a complex situation financially and socially,” Brooks said. “I prefer to remain optimistic that our relationship with plastic can be improved, despite some of the financial barriers. Every person plays a role in our global use of plastic and the circular economy can be embedded in that relationship so that waste is more valuable and less likely to end up in the environment.”

European authorities appear to have recognised the value inherent in plastics. The European Commission’s Plastics Strategy, which was unveiled in January, says its drive to make all plastic packaging recyclable or reusable by 2030 could create 200,000 jobs but only if recycling capacity is multiplied fourfold.

For Brooks, and her co-author Jenna Jambek, an associate professor at UGA’s College of Engineering, China’s ban should serve as a wake-up call and an opportunity to improve domestic management of plastic waste and invest in technology and new initiatives.

“The bottom line is that our solutions going forward need to incorporate all stakeholders, citizens, governments and industry, both locally and internationally,” said Brooks.

UN Environment

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Green Planet

Thwarting Trump on Climate Change Denial

Dr. Arshad M. Khan

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We now have the remarkable convenience of the internal combustion engine, and also its noise and chaos and emissions to energize climate change.  Burning fossil fuels has put us on planet Titanic …

The doomsday clock remains at a critical two minutes to midnight, the ‘new abnormal,’ spelling future disaster, and we will continue to be like the “Titanic, ignoring the iceberg ahead, enjoying the fine food and music,” to quote former California governor Jerry Brown.  He is now the executive chairman of the Bulletin of Atomic Scientists, the organization behind the clock.  This year climate change is cited as a major cause; it was the principal reason in 2012 and 2014.

The U.S. ‘National Climate Assessment’ last November did not mince words when it noted, “The evidence of human-caused climate change is overwhelming … the impacts of climate change are intensifying across the country.”  The report mandated by Congress and affirmed by science agencies of the government was repudiated by President Trump:  “I do not believe it,” was his blunt response.  Mr. Trump religiously opposes climate change, believing it to be a natural phenomenon that will reverse itself also naturally.  About the current administration, one prominent scientist, the president of the Woods Hole Research Center, was quoted in Science as saying, “They’re in la-la-land.” Science has labeled the inaction, the policy breakdown of the year.

Sadly this la-la-land is not harmless as tell-tale signs of the exacerbation of weather events are already here:  Hurricanes intensify quickly, then move slowly shedding unprecedented amounts of rain.  It happened with Harvey over Houston in 2017, and with Florence over North Carolina in 2018.  That overall temperature in the oceans is breaking new records is one good reason.

The 1.5C report from the Intergovernmental Panel on Climate Change has given us, on the safe side, a 12-year window in which to start reducing emissions, to try to achieve neutral balance by mid-century, or eventually a self-reinforcing feedback loop will lead to uncontrollable warming and a “Hothouse Earth.”  If   we cannot expect any policy initiatives from this administration, can changes in individual behaviors help?  Apparently yes, and it is within our power to address two major CO2 sources:

Carbon capture from the atmosphere is difficult and expensive.  A better alternative might be to remove it at the source.  That means at power stations and factories, and there are new processes offering hope.  However, most carbon emission comes from transportation, and it points to a future of electric cars using electricity from CO2 scrubbed power stations.  The choice of car is clearly up to us.

Another avenue of individual involvement is dietary change for a sustainable future — in itself clearly at odds with the zealous consumption of meat in rich countries.  Ruminants release methane through belching as food passes through their several stomachs.  Over their agricultural cycle, cattle alone emit 270,000 tonnes of greenhouse gas per tonne of protein, many times more than poultry.  As Bill Gates has observed if cows were a country, they would rank third in greenhouse gas emissions.

There is another way to look at it.  One can translate a kilo of different food sources into the number of car miles driven.  Lamb is definitely the worst at 91 miles followed by beef at 63.  Bad news for vegetarians, cheese comes in at 31 miles.  It is followed by pork (28), turkey (25), chicken (16), nuts (5) and lentils (2).  Imagine if dietary habits changed from beef to lentils, even once a week would make an enormous difference.  Also chicken, turkey and pork are reasonable substitutes as cutting out beef and lamb is clearly critical.  By the way, Indian food has delicious lentil recipes.

Scientists may soon have other intriguing possibilities, including lab-grown meat, that is if the current Beyond Burger type bean substitutes do not quite make the taste test.  Then there are crickets!  They happen to be an excellent source of protein offering more per pound than beef, and their production leaves a tiny ecological footprint in comparison.  Ground up into powder, this protein can be added to flour or other foods, and it is available.  Kernza is a perennial grain and a substitute for wheat and corn but without their annual tilling which robs the soil of nutrients and also causes erosion.  There is also a new oil made from algae.  Sourced originally from the sap of a German chestnut tree, it has been developed further to yield more oil, and is being sold under the name Thrive.  With a neutral taste and high smoke point, it makes an excellent substitute for the environmentally destructive palm oil, where plantations have ravaged forests in Indonesia and imperiled orangutans.

Personal choices can make a huge difference, including walking whenever possible for short distances instead of driving — mostly it’s just habit.  Bicycles, tricycles and push scooters are all out there, including some with electrical power assist.

Yes, there are options available to cut back our contributions to climate change; they require changes in habits and tastes, perhaps difficult, but we will have to eventually if we are not to leave behind a raging planet for future generations.  Meanwhile, the young in Europe have been marching in their tens of thousands to draw attention to the issue, and it cannot hurt to do likewise.

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Eye in the sky: Using satellites to better manage natural resources

MD Staff

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Looking up towards the stars at night, the sky can give the impression of being empty and infinite. In reality, space is getting more and more crowded every day.

According to the United Nations Office for Outer Space Affairs, there are currently 4,857 satellites orbiting the planet. Among them are two Sentinel-2 satellites, part of a space-borne mission provided by the Copernicus European Earth Observation programme. The two satellites visit the same spot on Earth every two to five days, depending on the location.

Their sensors acquire multispectral images with spatial resolution varying between 10, 20, or 60 metres, depending on the spectral band. The data produced by Sentinel satellites is freely available to the public and the volumes of data are staggering. Between Sentinel 1, 2 and 3, over 10 petabyte of new data are made available for download every year. With a single petabyte equalling 500 billion pages of standard typed text, this is Big Data worthy of its name.

The satellites are providing ever more detailed information about the state of our planet, and businesses have long ago figured out how to use this data. The European Commission estimates that the cumulative benefits of the Copernicus programme by 2020 range between US$11.4 to US$15 billion (10 to 13 billion euros). So how can we translate this wealth of information into tangible benefits for the environment at the local level?

“In Colombia, small-scale, mechanized illegal gold mining is creating environmental challenges on an unprecedented scale,” says Inga Petersen, Senior Extractives Adviser within UN Environment’s Crisis Management Branch. “Excavators and dredgers used to dig up river beds for alluvial gold mining are contributing to wide-ranging deforestation and the loss of natural wetlands. Highly toxic mercury used in processing contaminates air and water and has accumulated in the food chain, posing significant threats to human health and ecosystems,” she adds.

However, mining areas are often hard to reach and keeping track of new or abandoned operations can be a challenge to local government agencies.

To support the mapping of new and abandoned sites and identify opportunities for restoration, UN Environment is collaborating with the University of Liège, in Belgium, to leverage Sentinel-2 data for local-level decision-making and early warning.

Funded by the European Commission (DG Grow) and EIT RawMaterials, the RawMatCop CopX project (Geospatial mining transparency through Copernicus and MapX) is analysing changes on land and water bodies, focusing specifically on mining ponds created on riverbeds. These ponds offer clues regarding the status of the mining activities.

Detecting and analysing these clues with the use of Earth Observation requires machine learning and image processing techniques in challenging, highly clouded areas. These techniques are key to understanding the dynamics in the mining area and to potentially automate the search to cover larger areas and track changes over time.

Testing this innovative underlying methodology started in 2018 in the Bajo Cauca region in the Antioquia department. The project is being implemented in close cooperation with the Government of Colombia, including the Ministry of Mines and Energy, the Ministry of Defence and the Ministry of Environment and Sustainable Development as well as other UN agencies and strategic partners. Once established, CopX aims for the analysis to be applied at a larger scale and even offer the potential to establish an early warning system which can be adopted by the government to tackle illegal gold mining and monitor the implementation of restoration strategies.

However, translating big data into actionable insights is only a part of the solution. Making this data available to the relevant policymakers at the local and national level in a format which is accessible to non-experts is a critical step to enable evidence-based decision-making.

With this in mind, the project will use MapX, an online, open-source geospatial platform backed by the neutrality of the United Nations, to make the results available in easy-to-understand maps. The platform uses summary story maps, such as this one, to outline the interlinkages between the environment, conflict and natural resources.

“Whilst MapX can host sensitive datasets in private projects, MapX’s mission is to increase global environmental transparency by making the best available data widely accessible. Access to information is especially important in places like Colombia, where the environment features prominently in the 2016 peace agreement,” says Petersen.

In addition to featuring the outcomes of the project, MapX provides a comprehensive data catalogue, including data on the environment, the socio-economic context and conflict interlinkages. Combined with a suite of analytical and visualization tools, platform users can easily analyse, contextualize and visualize interactions between different data layers to increase awareness and inform decisions. Data, maps, narrative and multimedia files can then be summarized in interactive story maps to help tell the story hidden in the data.

UN Environment

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Air pollution is choking Bangkok, but a solution is in reach

MD Staff

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photo: UN Environment

A recent spell of especially soupy air has Bangkok scrambling to disperse dangerous pollutants and protect residents against dire health impacts.

The government has reacted quickly, clamping down on heavily polluting vehicles, deploying police and military to inspect factories and incinerators, shutting schools to protect children, and even deploying cloud-seeding planes to force rain and clear the air.

According to Kakuko Nagatani-Yoshida, UN Environment’s Regional Coordinator for Chemicals, Waste, and Air Quality, it’s a good start.

“The government has to take decisive action to enforce pollution regulations, and they are on the right track so far, deploying efforts such as strict enforcement of emission controls. We know they are also looking at more urgent measures and UN Environment is working closely with the government on longer-term solutions,” she said.

“While solutions like cloud seeding may provide temporary relief for larger particulates, it does not, however, help reduce PM2.5,” she warns. “After these interim measures, the next logical step is to shut down the most polluting factory. That may mean accepting some economic damage in the short term, but protecting public health must be the utmost priority. Beyond factories, the government can move urgently to replace soot-spewing public buses and boats running on diesel fuel with versions that are less polluting.”

Air pollution in Bangkok arises from a mix of factors. Traffic, construction and factory emissions are the main reasons, but at this time of the year, burning of waste and crop residues is also a major source. There isn’t just one culprit for the recent bout of air pollution, but it has been exacerbated by weather conditions that have not allowed the pollutants to disperse.

Bangkok and other areas in Thailand already experience regular air pollution. The prolonged period of unhealthy air in Bangkok is not unique to the city nor the country: 92 per cent of Asia and the Pacific’s population—some 4 billion people—are exposed to levels of air pollution that pose a significant risk to their health.

The current countermeasures are a short-term solution to this problem because, as Nagatani-Yoshida points out, “Factories can’t be closed forever. People need to get around. Ultimately, if people want to breathe clean air, numerous measures must be taken to tackle pollution.”

UN Environment recently published guidance on reducing air pollution. Some 25 measures could reduce premature mortality in the region by one third and see one billion people living in Asia breathing clean air.

“We hope country, provincial and city governments across the region, including Bangkok, look at these recommendations and implement them urgently,” said Nagatani-Yoshida.

UN Environment and the Climate and Clean Air Coalition are already working with the Thailand Pollution Control Department, the Department of Alternative Energy Development and Efficiency, and other agencies to implement some of these clean air measures and substantially reduce PM2.5 levels.

In particular, UN Environment is collaborating with the Pollution Control Department to leapfrog from Euro IV vehicle emission standards to Euro VI, which are currently the strictest standards in place.

Collaboration will also focus on helping shift 2–3 wheelers in Bangkok from gasoline to electric and retrofitting the numerous boats and ferries used for public transportation in the canal-connected city.

There is no time to waste. The faster the government moves to clamp down on emitters and back clean alternatives, the sooner Bangkok and the rest of the country can start to breathe again.

UN Environment

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