Category Archives: Biodegradation

Debunking the Myths of the Paper vs. Plastic Debate, Part I

Image by Aeropause

Standing at the grocery store checkout, realizing you forgot your reusable shopping bags, or if you did remember them, you don’t have enough, you’re faced with the decision: paper or plastic? First, you’re momentarily overcome with pangs of guilt; second, the inner dialogue commences. You’re a deer in the headlights, frozen, afraid to make a move.

There’s a lot of confusion surrounding the Great Bag Debate, much of it perpetuated by misinformation, common assumptions, and a whole lot of greenwashing. For years, it was thought that the better choice for the environment was paper, but it turns out that paper and plastic bags are just about equal in pros and cons. They both use resources, cause pollution, and generate many tons of waste that more often than not, ends up in the landfill.

To further complicate the conundrum, there is more than just paper and plastic to consider these days; plastic alternatives, including corn-based PLA, and landfill biodegradable plastics are commonly being used in packaging. As eco-conscious consumers, which bag do we choose, and how can feel good about our choice?

The Resources and Energy Pitfall

Myth #1: Paper is made from a renewable resource, so it must have a lower impact.

The first part of this statement is true, but in fact, paper production deals a double blow when it comes to climate change and environmental impact. First, forests are cut down, removing trees that absorb greenhouse gases and convert it into oxygen (not to mention the other impacts on wildlife and ecosystems in general); in 1999, more than 14 million trees were cut down to produce the 10 billion paper bags consumed in the U.S. alone. Second, manufacturing paper from pulp takes a tremendous amount of energy, and because paper is relatively heavy, it takes a lot of fuel to transport the finished product.

How does this compare with the plastics? Of course, there are impacts associated with the extraction of petroleum (just look at the Gulf), but it turns out that the actual production of plastic bags releases about 92% fewer emissions into the atmosphere than paper bag production, and requires about Plastic bags also weigh significantly less than paper, requiring less fuel to get them from point A to point B.

What About Waste

Myth #2: Paper breaks down in the landfill faster than plastic, so it must be the better choice.

Image by greenismyfavoritecolor.net

It turns out that under standard landfill conditions, paper does not degrade any faster than plastic. Even newspaper can take years to break down; newspapers excavated from one New York landfill were mostly intact after 50 years, and another in Arizona was still readable after 35 years. Indeed, the largest percentage of solid waste in U.S. landfills comes from paper and paperboard products, about 31%.

On the other hand, the new generation of plastics somewhat complicate this debate. PLA, or corn-based, plastics commonly used in disposable cutlery, packaging, and plastic grocery bags is compostable, but only among the perfect conditions found in a commercial composting facility, NOT in the landfill where most plastic ends up, or even in the backyard compost pile.

Biodegradable plastics, like ENSO’s products, however, do break down in the anaerobic landfill environment in a short amount of time (an average of five years), leaving behind only methane, carbon dioxide, and biomass. The use of an additive in standard plastic production also makes it a cost-effective solution. In terms of the plastic waste problem, the biodegradables currently hold the most promise.

Next week, in Part II, we’ll take a look at the aspects of pollution and recycling, and see how the contenders hold up.

Putting Biodegradable Plastics and Methane to Work for Us

When organic material and ENSO Bottles are broken down by microbes in landfills, the decomposition process results in the creation of many gases, including methane, which can be very harmful to humans, animals and the environment if not handled properly. But methane also has the potential to be very beneficial to society if a nationwide system could be put in place to give it a practical use, such as supplying our homes with electricity.

Maybe you’ve heard the term “landfill gas.” Methane and landfill gas are not one and the same, although methane does account for roughly 40 to 60 percent of landfill gas on average; the remaining percentage is a mix of carbon dioxide and small amounts of various other elements.

Methane has its pros and cons. At room temperature and standard pressure, it’s non-toxic and odorless; however, it can be highly flammable as well as an asphyxiant, meaning it displaces all the oxygen in an enclosed space and could cause a person in the room to suffocate. Methane is also known to accelerate the breakdown of the ozone layer and contribute to global warming. And according to the Environmental Protection Agency, it can remain in the atmosphere for nine to 15 years.

But municipalities that have the means to safely harness the gases coming off landfills can put methane to work for them in a positive way. When you compare methane to the other hydrocarbon fuels, also known as fossil fuels (for example, coal and petroleum), methane produces less carbon dioxide when burned, leading many to argue it’s a greener alternative when it comes to heating homes, powering stoves or running our cars. Methane can also be converted to electricity right on-site at a landfill, providing cities with a relatively convenient and cost-effective way to add power to its electrical grid.

This is how it works: Garbage arrives at a landfill, where it’s compounded and left to decompose (1). As the microbes eat away at organic matter and other biodegradable objects, ENSO Bottles included, the process creates landfill gases (2) that enter underground pipes (3). The pipes transport these gases (4) to a facility where any and all harmful contaminants, such as mercury or sulfur, can be filtered out and neutralized. After the methane is isolated, it can be pumped into an engine (5), which powers a generator, which creates electricity (6). Cities that employ this method can add the power generated by their landfills right into their power supply grid. What city wouldn’t want such an efficient system in place?

According to the EPA, of the approximately 2,300 currently operating (or recently closed) municipal solid waste landfills in the U.S., more than 490 have wised up and utilize landfill gas energy projects — that’s up from the 395 programs that were in place at the end of 2005. And, the EPA has identified at least 515 additional landfills that would be good candidates, which would be capable of producing enough electricity to power more than 665,000 additional homes in the U.S.

Ideally, we would live in a culture of zero waste, where every product manufactured is reused, recycled or reclaimed, but the reality is, landfills are very much a part of our society and won’t be going away any time soon. So one thing we can focus on right now is supporting biodegradable products, such as the plastic bottles ENSO makes, as well as projects that reclaim energy from landfill methane in order to ensure that what we toss out as garbage will live on to heat our homes, power our vehicles and make our waste management system just that much greener.

The Ocean’s Plastic Garbage – A Serious Environmental Hazard

Our world’s oceans are home to five growing plastic gyres – vortexes of swirling ocean currents filled with degrading plastic that pose a serious threat to marine life.

Captain Charles Moore, noted author and oceanographer, has spent years conducting ocean and coastal samplings documenting plastic fragments along the 40,000 miles of the North Pacific Ocean. Captain Moore was the first to discover the Great Pacific Garbage Patch, otherwise known as the Pacific Gyre, which lies in the northern Pacific near Hawaii. This is the largest of the known gyres – roughly 12,400 square miles in size and growing – and filled with swirling fragmented colorful plastic debris.

Plastic in the ocean takes roughly 600 years to degrade fully. Marine life like sharks, dolphins, whales and numerous species of fish mistake these colorful remnants of our castoff trash as food, often suffering starvation due to the trash being indigestible. Oddly, it’s only the colored plastic they go for, though the clear plastic is also hazardous. Plastic water bottles are regularly found tangled in ocean coral, littering the ocean floor.

Plastic garbage doesn’t just stay in the ocean. Storms periodically break gyres up, pushing waves of trash onto beaches around the globe. Hawaii’s Kamilo Beach is frequently known as Plastic Beach due to its continually being overrun with plastic trash brought in by the ocean’s waves.

This plastic comes in all sizes and forms – discarded toothbrushes, combs, cups and, of course, plastic water bottles. Plastic trash discarded in Asia and Europe makes its way to the ocean, gets caught in the Indian Ocean gyre, then gets pushed back again to litter the once pristine shoreline.

We use 2 million plastic beverage bottles every 5 minutes in the U.S.

“No one is (looking) at it as a global phenomena and at the root causes (to) try to make it stop,” said Cecilia Nord, Vice President – Floor Care Sustainability and Environmental Affairs of Swedish-based Electrolux.

“We need to make it stop,” she said.

“Only we humans make waste that Nature can’t digest,” says Moore.

ENSO Bottles realizes that what’s needed is a shift in thinking as well as action. By creating their innovative biodegradable plastic bottle with the ENSO additive, these PET-based bottles break down, rather than contribute to the world’s plastic pollution. It’s part of ENSO’s commitment “to act as environmental stewards.”

With plastic trash increasing the world over, and the devastating effect this has on marine life, it’s crucial for consumers to become responsible stewards who take on recycling to a level not seen before is needed.

Individuals doing their part can make the difference.