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November 17, 2020 10:14 AM

Value chains must change to reach automotive circularity, report says

Sarah Kominek
Sarah Kominek
Staff Reporter
Plastics News Staff
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    File photo, Ford Motor Co.

    Carmakers and suppliers should pair with municipalities and economic development groups “to get funding for infrastructure for better and more recycling facilities,” according to a director at the American Chemistry Council.

    The automotive industry needs to "reimagine" its value chain in order to transition to a circular economy, researchers at the American Chemistry Council say.

    As automakers continue to set sustainability goals, Gina Oliver, senior director of the automotive plastics division at ACC, told Plastics News that "a lot of change" and coordination will be required to escape from the "make-use-dispose" system.

    "We don't have everybody on the same page," Oliver said. "We know it's important to start that conversation now."

    ACC's Oct. 5 report, "Transitioning Toward a Circular Economy for Automotive Plastics and Polymer Composites," identifies focus areas and existing products and processes that could improve industrywide efforts to increase the circularity of automotive materials and components.

    The traditional automotive value chain, Oliver said, "needs to expand to include recyclers and dismantlers."

    While U.S. automakers and material suppliers are currently "working toward" sustainability goals without legislation requiring they do so, she said the industry still "might need help, potentially from Congress, to help us certify with the agencies that recycled content is good, valuable and desirable. Get that stamp of approval."

    Getting the U.S. Environmental Protection Agency "engaging on recycling initiatives," Oliver said, could help to build the much-needed infrastructure.

    Carmakers and suppliers should pair with municipalities and economic development groups "to get funding for infrastructure for better and more recycling facilities, and not just have them regionally siloed around the nation," she said.

    More recycling solutions

    China's 2019 ban on imported waste left "a lot of companies, municipalities and cities to have to throw their valuable recyclables away in some cases," Oliver said.

    "We just weren't able to handle capacity," she added.

    ACC's recycling and recovery development team has been working closely with EPA and the U.S. Department of Energy to find such solutions but can't do it on its own, she added.

    "The current processes that we have don't really provide a very good portfolio of solutions to get valuable materials out of a vehicle at end of life," Oliver said.

    Materials harvested from a vehicle at end-of-life, if not immediately recycled, are often shredded, she said. Those materials can be cross-contaminated by other materials that end up in the shredder, "usually metals."

    That contaminated plastic content then has very few approved uses, Oliver said.

    "If recyclers would use dedicated shredders, that would solve the problem," she said. "It's an education thing, but it's also an investment. Shredders are hugely expensive, and the recyclers don't necessarily have the motivation or a requirement to use dedicated shredder. … It's not an economic benefit to them."

    Other value chain shifts might include feedstock arrangements becoming "long-term supply agreements with waste management companies," Oliver said. "Or maybe backward integration where a plastics company might acquire an automotive shredder company or waste collection operation."

    OEMs will need to design vehicles to be easily disassembled, something that is just beginning to happen because the concept of circularity, she said, "is still relatively new."

    The industry is "enabling through adhesives, easy assembly of a vehicle, taking it apart for repair or end-of-life disassembly and recycling … [or] nondestructive evaluation," she said.

    "The materials themselves also have to be designed to be recyclable," Oliver said.

    "Polyolefins are a great success," she added. "They're fully recyclable, and we already have processes in place. … The recycled material actual meets a virgin-material requirement."

    Plastics and polymer composites are "well suited" to meet design challenges when it comes to vehicle end-of-life disassembly and sorting, Oliver said.

    The materials can be accurately and easily identified, she said, and can be put back into new vehicles "or another product in the value stream."

    "A huge range of resins go into automotive applications, parts and assembly," Oliver said.

    New and advanced recycling technologies will have to be able to process that diverse range "into valuable feedstock," she added.

    Plastics can also contribute to lengthening vehicle life, with attributes like a high strength-to-weight ratio and durable, scratch-resistant, self-cleaning and antimicrobial surfaces.

    "All of those things are going to be needed in order for us to capture that maximum amount of vehicle use," she said. "Those are going to play into circularity, but also they're going to play into future mobility trends that are happening, including ride-sharing and attracting millennials to vehicles.

    "We have the unique ability to build nearly limitless solutions into the DNA of our materials," Oliver added.

    Plastics also provide "a really wide range of options for reducing waste and improving efficiencies through things like parts integration, the uses of regrind, or the reprocessing of defective parts."

    Automotive suppliers are "already ahead of the curve when it comes to optimizing manufacturing processes and helping the OEMS optimize their processes," Oliver said.

    "While they're manufacturing components or parts, they have to be able to, if there's waste, reincorporate it either into another part of the vehicle assembly and design," she said. "Or bring it back to the drawing board, melt it down and it goes back in the circular process.

    "There's more to be done and more to learn," Oliver said. "We have to look at recovery and recycling models more closely, and in coordination with and integrated with recycling value chains."

    The industry should create "supply webs" or reimagine its supply chain as a "material swap" or "material exchange marketplace" to reach a closed-loop recycling process.

    Standardized assessment practices

    One missing component for the industry to start its move toward circularity, Oliver said, is an agreed-upon standard method for vehicle life cycle assessment.

    "We can't accurately assess the advantages and disadvantages of material choices when it comes to measuring or enabling circularity if we're not comparing apples to apples," she said.

    "We need to get an industry working group together and hear what the OEMs need and what they want to see with methodology," Oliver said. "We're not basing it on any kind of quantifiable numbers. … Everyone does it differently.

    "The business models have to be attractive; they have to be profitable," she said. "We know that there's amazing economic opportunity there for the value chain to move to circularity. What we do that is up in the air."

    ACC hopes to "engage the relevant federal agencies and get their help to recognize the need for the auto industry to have a standardized methodology so we can move forward," she said.

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