If you're like me, you don't think much about carpets.
Except maybe when you spill on one.
But like so many everyday things that we take for granted, carpets have a story to tell, and it's becoming an intriguing sustainability story. Shaw Floors, the world's largest carpet manufacturer, which is owned by Warren Buffett's Berkshire Hathaway, recycled 121 million pounds of used carpet last year -- reclaiming it from homes or offices, breaking it down into caprolactam, a compound which is a building block of nylon, and then redeploying the nylon to make new carpet.
The carpet pictured above is branded as EcoWorx. It's a PVC-free, fully recyclable alternative to traditional carpet tile, designed from the get-go to be broken down and remanufactured into itself again and again. More than half of the carpet sold by Shaw is now certified as Cradle to Cradle, the protocol developed by McDonough Braungart Design Chemistry.
In Shaw's sustainability report, Buffett writes:
Companies today have to consider what kind of impact their decisions will have on both their businesses and the planet -- ten, twenty, thirty or forty years from now. And when in doubt, it's wise to err on the side of the planet.
Nice. Recently, I met with Paul Murray, Shaw's vice president of sustainability, and David Wilkerson, director of sustainability, to talk about Shaw. It's a big company -- revenues topped $4 billion last year and Shaw employs about 25,000 people, most in manufacturing jobs in the southeast, near its headquarters in Dalton, Ga., the world's carpet capital. Like its peers, Shaw is enduring hard times because its business is closely tied to the real estate industry; its sales have fallen from a peak of $5.8 billion in 2006.
Shaw has embraced green practices since the 1990s and got formally organized around sustainability about five years ago when Vance Bell became CEO. "A successful sustainability group within a corporation needs support from the top," Wilkerson said. Bell talks easily about the "triple bottom line" and notes that even during the downturn Shaw has invested in projects like Re2E (reclaim to energy), a plant that turns old carpet into fuel.
[Shaw's work has been overshadowed by the sustainability pioneer in the carpet industry, Ray Anderson of Interface, who died last summer. In case you missed it, here's Paul Hawken's eloquent tribute to Ray.]
Changing the way an industry operates is never easy. Traditional carpet is made from petrochemicals -- the surface is typically nylon, the backing is primarily polypropylene. When carpets wear out, most are sent to a landfill. In 2010, about 3.4 billion pounds of carpets were discarded and only about 338 million pounds were diverted or recycled, according to the Carpet America Recovery Effort (CARE), an industry group. Partly that's a matter of habit, partly it's economics and partly it's because breaking carpet down into its component parts isn't simple. "It's more like unmaking a layer cake than melting down a bowl of Jello," Wilkerson said.

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The debate about the best
The debate about the best methods of reaching sustainability is moot without a steady stream of the raw materials.
Old carpet is difficult to manage and consumer habits need to change in order for any recycling effort to be successful.
Efforts to collect carpet can only be accomplished on the community level, with regional organizations supplying the goods.
When companies like CLEAR Carpet Recycling (www.landfillclear.com) uses an existing infrastructure to promote responsible handling of used carpet and pad, recycling programs have a good chance of reaching the goal.
At Shaw, we agree that the
At Shaw, we agree that the best option for diverting end-of-life carpet from landfills is indeed to eliminate waste in the manufacturing process and design products that can be deconstructed and recycled into new flooring products on a “Cradle to Cradle” basis.
In fact, our Evergreen Nylon Recycling facility in Augusta, GA does exactly this. This innovative plant uses a sophisticated depolymerization process to recover caprolactam, the building block for Nylon 6, from post consumer Nylon 6 carpet which is used to make new nylon and, ultimately, new carpet again and again without ever degrading the material.
However, Nylon 6 is only one of several synthetic fibers used by the carpet industry and none of the others currently have a commercially viable closed loop recycling option. With that said, Shaw is diligently focused on developing cost effective ways to either recycle or “down cycle” these other fibers although, in the absence of an available recycling path, we believe extracting the embodied energy and using it as an alternative fuel in our manufacturing plants is an appropriate use of material that would otherwise end up in landfills.
For example, we are now able to take post consumer Nylon 6,6 carpet, remove the face fiber and convert it into a pellet that is used by the engineered resin market to produce plastic auto parts and other industrial products. We are also developing carpet pad products that utilize the remaining backing components once the face fiber is removed.
However, one of the industry’s challenges is deciding what to do with PET and polypropylene post consumer carpets which are widely sold in the residential market but do not currently have commercially developed recycling options. As a result, they are routinely taken to landfills at the end of their useful life which is a waste of petroleum based resources and, in our opinion, an unsustainable practice.
Because of our commitment to “Sustainability Through Innovation”, Shaw has built the world’s first alternative energy plant that is fueled entirely by post consumer carpet and related waste materials. Named Re2E, which stands for “Reclaimed to Energy”, this LEED certified facility produces approximately 50,000 lbs of steam per hour and saves enough fossil fuel equivalents to support over 7,200 single family homes per year. It also has state of the art pollution controls which capture SOx, NOx, and particulate matter, preventing it from going into the atmosphere. Re2E also co-generates approximately 3.5 million kWh of electricity annually which is enough to support about 300 homes. Most importantly, its primary fuel source is post consumer PET and polypropylene carpet products which would otherwise be destined for landfills.
In summary, our priorities at Shaw are “carpet to carpet” recycling, “carpet to other products” recycling and, as a final option, extracting the embodied energy from reclaimed products that cannot be recycled at this time.
Shaw's "Re2E" project is not
Shaw's "Re2E" project is not sustainable.
"Burning" carpet with pyrolysis creates toxic emissions when the gases are combusted.
A real sustainability effort would do away with carpet that could not be recycled or composted.
A real sustainability effort would have better carpet design.
Real sustainability does not aid in a system that wastes resources and requires the extraction of new resources after "old carpet" goes up oin flames.
Shaw should be praised for their other efforts but not for their greenwash pyrolysis project.