OECD report says governments need to act to encourage plastic recycling markets

The Organisation for Economic Co-operation and Development (OECD), France, has issued a report stating that plastic recycling is failing to reach its full potential as low recovery rates of plastic scrap, poor quality of recycled plastic and a lack of price incentives are holding back secondary plastic markets.

Given rising public concern over plastic pollution, governments should act urgently to encourage more and better recycling, according to the report, Improving Markets for Recycled Plastics: Trends, Prospects and Policy Responses.

The report attributes the lag in plastic recycling to the fact that it is still cheaper to make new plastic than to produce recycled plastic, partly because of the difficulties involved with separating out different plastic polymers. Moreover, primary plastic can be priced much higher than recycled plastic as it tends to be of much better quality, the report states. Issues with the presence of hazardous chemical additives that can survive in recycled plastic also weigh on secondary markets. The world produces around eight times as much new plastic as recycled plastic.

The report calls for stronger incentives for better design of plastic goods to ensure easy recycling, as well as investment in waste collection infrastructure and ensuring that different types of plastic are properly separated at source. It also recommends the introduction of product labels showing recycled content to help create consumer-driven demand for recycled plastics. In some sectors, required levels of recycled content in goods could be set.

The report also suggests heavier taxes on the manufacture or use of new plastics. For example, making consumers pay for single-use plastic bags, cutlery or drinking straws.

The widespread use of plastics has brought many benefits, according to Improving Markets for Recycled Plastics: Trends, Prospects and Policy Responses.

“However, their increasingly pervasive use and inadequate disposal also have significant environmental impacts,” OECD says. “The manufacture of plastic is highly resource-intensive and accounts for 4 percent to 8 percent of global oil and gas consumption. Waste plastics can remain in the environment, harming wildlife and marine creatures, for centuries. Yet, globally only around 15 percent of plastic waste is collected for recycling. A quarter is incinerated. The rest ends up in landfill, is burnt in the open air—releasing pollutants and greenhouse gases—or dumped in nature. Much ends up in oceans.”

Recycling rates across different polymers vary greatly across countries. PET (polyethylene terephthalate) and HDPE (high-density polyethylene), which are mostly used for packaging, are recycled at relatively high rates (19 percent to 85 percent, respectively), while polypropylene (PP) and polystyrene (PS) are much less recycled (1 percent to 21 percent). Overall, plastic recycling rates range from 30 percent in the EU to 10 percent in the United States. In many developing countries, uncontrolled waste collection and treatment is still prevalent, OECD says.

Barriers that need to be overcome to properly develop secondary plastic markets, according to the report, include:

• Pprimary and recycled plastics are treated as substitutes, with no separate demand for recycled plastics This leaves markets exposed to trends in primary markets.
• Prices of recycled plastics are driven by primary plastics prices, which follow oil prices rather than the costs of collecting, sorting and processing plastic waste. Producers of recycled plastics thus have few options to adjust their costs in a downturn.
• The plastics recycling sector is smaller and more fragmented than the primary industry, leaving it at a disadvantage in terms of economies of scale and its ability to absorb market shocks such as oil price swings.
• The market for plastics scrap is concentrated in a few countries. This makes recycled plastics markets slow to adjust to demand shocks such as the recent import restrictions imposed by China, which previously accounted for two-thirds of waste plastics imports.
• Technical challenges are associated with the wide range of polymers and additives used, the significant levels of contamination in postconsumer plastics and practical challenges of collecting plastics, particularly in lower-income countries.

The report will be presented at the May 29-31 Global Forum on Environment - Plastics in a Circular Economy: Design of Sustainable Plastics from a Chemicals Perspective in Copenhagen.

OECD is an intergovernmental economic organization with 35 member countries, founded in 1961 to stimulate economic progress and world trade.