"Whether it's crystallized or blended with other polymers, if handled appropriately like other polymers, Ingeo can be recycled and its properties retained through numerous recycle events," said Frank Diodato, segment director for durables and distribution for NatureWorks. "This is true for both post-industrial and post-consumer Ingeo (engineering) plastics formulations. At the post-consumer level plastics are often mixed, making recycling more difficult, but that's not as common with post-industrial materials."
Although bioplastics have been targeted as "contaminating" the recycling and waste stream, nearly all plastics do, said Davies.
"Bottles in the US are typically made of either 100-percent clear polyethylene terephthalate (PET) or 100-percent white high-density polyethylene, so these are easily identified. They are easy for consumers to identify, and for material recovery facilities (MRFs) to sort manually, and therefore get recycled in very high numbers. By contrast, clear clamshells can be made of PET, polystyrene, or polypropylene, and recyclers need the most modern equipment to distinguish among them. Most of them sort out bottles only and then landfill the rest, or ship it to Asia for sorting, or ship it to end users here for reuse."
Aside from sharing details with MRFs about how to work with its products, NatureWorks also wants to help develop end markets. "Once there are end markets for a material, the MRFs will be happy to sort it." said Davies. For example, traditional plastics compounders buy different plastics feedstocks and mix them together to make value-added blends. Some of them are interested in buying NatureWorks' recycled polylactic acid (PLA) bioplastics. BioCor, for example, already buys post-industrial and post-consumer PLA scrap, both petro-plastic and bioplastic.
The new range of materials made out of recyclables is opening up huge design possibilities. It's interesting to note that, right now, this is really taking just a drop in the bucket out of the waste stream. In 50 years, however, we could see a significant reduction in the waste stream because of serious percentages of recylcing. As well, the whole movement, notable in the auto industry, about designing equipment so that it's easily disassembled, will reach full flower and feed into this. Also of note is the fact that what's happening now seems driven more by technology than regulations, which makes it more organic.
Seems there are two interesting aspects of this story, Ann. for one, it's good to see a manufacturer would work with a recycler to make sure the products they produce have a welcome home at their end of life. It's also good to see these products will break down easily in landfills -- given that you say 88 percent of plastic doesn't get recycled.
Rob, Completely agree with you and it seems like those two criteria will ultimately become requirements for almost all types of recycling options. It's amazing to think about the amount of innovation that will likely occur in this market area over the next few years, given the pace of developments at this point. Good stuff, Ann.
Thanks for the feedback guys. Actually, only some bioplastics are biodegradable--but purposeful, managed composting and biodegrading in landfills are two different things. The first captures as much CO2 as possible, while the second does not--landfills are the last resort that everyone is trying to avoid because it takes so long for anything to break down there and lets off a lot of CO2 into the atmosphere. Engineering bioplastics are neither, so recycling them is the best option.
Alex' point is a good one about technology, not regulations, driving things. That's certainly the case when it comes to energy recovery of plastic by recycling them into fuels, which will be the subject of my May feature.
I agree, Apresher. Given the low participation in recycling, your suggestion of making materials that decompose easily may be a big answer. Now that we're harvesting methane from landfills, decomposable trash going to landfills will become positive.
But, like everything else, recycling begins in the home. Our fast paced and often immoral life-style seems to be endangering the original concept of home. We now rely government, industry, science, and big thinking to solve the simplest problems that use to be second nature in the home.
Chuck, it is possible to recycle plastics into fuels, which is the subject of my upcoming May feature article on alternative energy. However, bioplastics aren't currently a large component in such recycled plastics-based fuel, since they represent such a small part of the plastics waste stream and since plastics-to-oil technology is only just starting to take off commercially. But yes, you can start with either biomaterials or petromaterials to get to ethanol, and this is happening in small numbers.
It's true that some energy harvesting is occurring at landfills, but it's important to remember that there's a world of difference in CO2 released between unmanaged biodegradation in the typical landfill or anywhere else on the one hand, and managed composting in landfills or anywhere else, on the other. A biodegradable material can take many many years to finish biodegrading, during which time it releases considerable amounts of CO2 and may also leave undesirable residues in the soil. Composting, when done right, happens a lot faster, capturing more CO2 and leaving little or (preferably) no residues.
There are many places on the web to find our more, but here's some info and definitions from BASF, a bioplastics maker:
A new service lets engineers and orthopedic surgeons design and 3D print highly accurate, patient-specific, orthopedic medical implants made of metal -- without owning a 3D printer. Using free, downloadable software, users can import ASCII and binary .STL files, design the implant, and send an encrypted design file to a third-party manufacturer.
A recent report sponsored by the American Chemistry Council (ACC) focuses on emerging gasification technologies for converting waste into energy and fuel on a large scale and saving it from the landfill. Some of that waste includes non-recycled plastic.
Capping a 30-year quest, GE Aviation has broken ground on the first high-volume factory for producing commercial jet engine components from ceramic matrix composites. The plant will produce high-pressure turbine shrouds for the LEAP Turbofan engine.
Seismic shifts in 3D printing materials include an optimization method that reduces the material needed to print an object by 85 percent, research designed to create new, stronger materials, and a new ASTM standard for their mechanical properties.
A recent study finds that 3D printing is both cheaper and greener than traditional factory-based mass manufacturing and distribution. At least, it's true for making consumer plastic products on open-source, low-cost RepRap printers.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.