What if Food Waste Collection was Mandatory?

What If…?

We as humans are naturally inquisitive and we have all been down that oh-so-tempting rabbit hole: what if…? What if I could fly? What if I didn’t pay my taxes? What if I learned to speak Quechua? What if I ate this entire quart of ice cream? Well, you’re not alone and when it comes to our future as a sustainably-minded race, I for one am here to follow through on some of these musings. Over the next few weeks, this blog will offer a glimpse into possible realities.


Big changes, especially those that include a fine, take a while for the public to get used to. Federally mandated food waste collection, like so many laws, would be met with resistance by some and greeted with messianic acclaim by others. There would be concern that waste regulation could impinge on social liberties and lead to armies of governmental henchmen digging through one’s personal refuse. Opinion wars would rage on even after the initiative took effect. Then, gradually the opposition would lose interest as the benefits became clear. And the benefits would be undeniable.

According to the FAO, nearly half of all food produced worldwide is wasted in private kitchens, restaurants, processing plants, supermarkets, and during transportation. In the U.S., as much as 30% of our food goes to waste after production. This means over $48 billion is pulled from our collective pockets and tossed right into the garbage can every year. Anyone who has worked in a high traffic restaurant or eaten at a buffet can attest to just how much we waste on a daily basis. All this discarded food is sent to rot in landfills, where it generates tons upon tons of methane – a greenhouse gas 23 times more destructive than CO2.

On the federal level, the collection of food waste and yard waste would not only immediately decrease the amount of organic material that is heaped into landfills, it would also begin the shift in consciousness from “waste” to “resource.” Food waste still has a lot to give. It can be composted and used as a rich soil amendment, or it can be converted into energy to power the community. It can even be converted into new, usable products!

Food waste is some of the most energy dense material out there. As the majority of you are likely aware, BME’s very own AGATE system is capable of processing all manner of organic waste to produce biogas for energy, and biochemicals to replace toxic petrochemicals. This not only includes food scraps and moldy leftovers, but soiled napkins and compostable paper products. Imagine then that each scrap of food saved from the maw of the garbage bin is a battery, holding the potential to power your home and displace petroleum. We may yet add a new phrase to the environmentally conscious vocabulary: “Don’t throw that away, it’s AGATE-able!”

Think this is a pipedream of the future? In many cities it is already reality. Across the U.S., temporary pilot programs have been setup to test the feasibility of food waste collection in their particular urban environment. Such programs have been underway in Pennsylvania, Massachusetts and Colorado. Longstanding regional programs have flourished and expanded in areas like California’s Alameda County and our own King County. Seattle boasts both recycling and organic (food/yard) waste collection mandates. San Francisco has also enacted mandatory residential organics collection. Since the enactment of this mandate, the amount of food waste collected in San Francisco rose from 400 to 500 tons per day.

The big concern on critics’ lips has been monitoring and enforcing these mandates. There’s really no getting around the fact that the idea of someone inspecting your trash is creepy at best and invasive at worst. That being said, we have yet to see a takeover of the Department of Sanitization by Big Brother in any of the cities currently practicing mandatory food waste collection. It may help to think of food waste mandates as an extension of litter or hazardous material laws. And when it comes to fines, we can breathe a collective sigh of relief. According to officials from Seattle Public Utilities, families failing to separate food waste from their trash do not immediately receive a fine; suffering instead the minor inconvenience of having their trash tagged and left until it has been properly sorted. Only after a residence has been tagged 3 times, will the family receive a fine ($50 in case you’re curious). These fines are intended to provide punitive incentive, not line city coffers. In 2008, only 18 of the 6,000 apartment buildings served by Seattle Public Utilities were fined.

In most cases, cities across the globe with mandatory food waste pickup report a rise in the standard of living. Compostable food waste no longer besmirches apartment building trash chutes and basements, affording tenants a distinctly fresher outlook on life. Salvaged food waste has enriched the soil of local parks and gardens, nourishing plants and improving the public experience. Private companies and municipalities with waste to energy agreements are enjoying the mutual benefits of the shift from “waste” to “resource.” It’s hard to argue with something this full of win, and we can only hope that this regional trend will soon go national.

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America’s Apian Ghost Towns

A good friend of mine has two very life-like bees tattooed on her back, one on either shoulder blade. When asked their significance, she will happily explain that they are a personal reminder of the destruction and mayhem we humans wreck upon our environment. “Bees?” You might ask. “Not a beloved Hometree, toppled by greedy contractors amidst fire and brimstone?”

Interestingly enough bees are an apt reflection of environmental damage. An extreme reduction in the number of honey bees (Apis mellifera to you Latin lovers), feral and commercial, has been recorded over the past several decades. The mysterious phenomenon was dubbed “colony collapse disorder” or CCD in 2006, by which time some areas were reporting colony losses of up to 90% according to USDA. Why mysterious? CCD is characterized by a sudden, complete absence of bees in a colony (including dead bees…spooky, eh?). There is, however, a presence of “capped brood,” i.e. unhatched baby bees, which adult bees would normally never abandon. The vacant colonies also typically contain well stocked larders of both honey and bee pollen, which remain untouched by other bee colonies for some time after they are abandoned. Confirmed cases of CCD have been recorded in 24 different states, portions of Canada, India, Brazil, and parts of Europe. During the winter of 2008/2009, a total loss of 28.6% of commercial honey bee colonies was recorded in the U.S. – 15% of which was confirmed as CCD related.

Loss of the honey bee population would not only be a disastrous event for a certain honey loving bear, but for all of us. Bees aren’t just little honey making machines; they are a very important link in our economy. The bee product industry in the state of Georgia alone generates $70 million per year through the sale of honey, beeswax, queen bees and package bees. Apis mellifera are responsible for the pollination of thousands of plant species, including those we humans depend on for food. A full 1/3 of the human diet can be traced back to bee pollination, a service they kindly provide free of charge. A Canadian study estimated that the annual benefit of bee pollination totaled above $443 million per year. In 2000, a study at Cornell University estimated the value of U.S. crops that are entirely dependent on bee pollination exceeds $15 billion. The economic value bees provide, however, extends far beyond food crops. Bee pollination accounts for over 16% of flowering plant species in the world, sustaining plants that prevent erosion, increase property value, please our jaded senses, and are a key part of natural ecosystems.

While no single culprit has been identified, the causes of CCD have been speculated upon for years, ranging from cell phone signals to climate change and from parasites to pesticides. The explanation now emerging is of a complex condition, triggered by a combination of causes. This is nature we’re discussing after all.

So how is such a complex condition treated? Beekeepers have had some success by increasing the diversity of plants they’re bees feed upon. Bees that feed from a range of plants show signs of healthier immune systems than those forced to feed on acres of monocropping. One of the conclusions of a new French study is that bees need to ingest a range of proteins to create their various chemical defenses; an unvaried diet leaves them open to disease. Meticulous hive sanitation has also proved worthwhile, eliminating the instances of parasites like Nosema apis. In the U.K. farmers receive financial incentives to utilize wildlife-friendly practices. Dr. David Aston, chair of the British Beekeepers’ Association technical committee, says he believes there is a great opportunity to halt this decline by simply restoring natural diversity. “That makes landscapes much more attractive as well, so it’s a win-win situation,” he says.

Great or small, any step taken towards raising awareness or decreasing instances of CCD helps create healthier bees, which will create healthier crops and flowers, which will create healthier, happier humans.


Percentages of U.S. agricultural crop dependence on bee pollination.

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Clean(er) Coal

A single lump of coal, like the kind bad little kids might find in their stocking, is capable of producing 12,000 Btu or enough energy to power a 75-watt light bulb for 2 full days. Compared to oil, coal is easy to get out of the ground and dirt cheap, clocking in at 1/6 the cost of oil or natural gas per Btu.

So is coal the new lean, green fuel of the future? There are certainly some hoping and arguing that this is the case. With uncanny timing, considering the various discussions of capping or taxing C02 emissions, coal is being rebranded. “Clean coal” has been the buzzword on the lips of politicians and lay people alike, with the elusive promise that coal will be the low cost, low emissions fuel capable of maintaining our way of life. Heck, Senators John Kerry (D-MA) and Lindsey Graham (R-SC) even called for the U.S. to become the “Saudi Arabia of clean coal” in their recent New York Times op-ed.

While it sure would be convenient, there’s just one glaring problem with this solution: coal isn’t ever going to be clean. Sooty little chimney sweeps and blacken chutes aside, coal is one dirty little lump. It contains vast amounts of sulfur and nitrogen particulates (that cause acid rain), traces of mercury and other toxic heavy metals. Then of course there’s the unfortunate fact that coal is far and away the largest single source of greenhouse gas emissions in the United States today. And not only is coal bad for the environment, coal emissions have been determined to contribute to 10,000 premature deaths in the U.S. every year.

While we have come a long way in making coal cleaner since the early days of coal power, we’re a far cry from being anywhere near clean coal.

The crux of the clean coal pitch is carbon capture and sequestration (CCS) – essentially bottling and burying the C02 that is produced when coal is burned. While this sounds great in theory, in practice it’s pretty near impossible. Why? Because every pound of coal produces about 2.5 pounds of C02. If we flash back to high school chemistry, we’ll remember that when coal burns, oxygen in the air combines with carbon in the coal in what is called an exothermic, or heat-producing, reaction. So far so good for energy generation but with this added oxygen, the C02 now weighs more than the coal’s carbon “body”. This is where CCS is meant to step in to keep all that C02 out of the atmosphere. The process goes as follows: exhaust from the coal power plant is forced through a liquid solvent, which absorbs the C02. This liquid is later reheated to release the gas in another facility where the C02 is compressed to 100 times normal atmospheric pressure and is ready for storage.

But here’s where things really start going sideways. A typical 500-megawatt coal-fired power plant produces close to 10,000 tons of C02 a day. All together, U.S. coal power plants produce 1.5 billon tons a year. To capture all that, we would have to fill 30 million barrels with liquid C02 every single day. How are we supposed to transport and store all of that? To put this in perspective, it took about a century to build the infrastructure we use to store, transport and distribute petroleum. Serious plans to implement and finance such a vast infrastructure project have yet to be publicly proposed, let alone examined. According to the Congressional Research Service, “There are important unanswered questions about pipeline network requirements, economic regulation, utility cost recovery, regulatory classification of C02 itself, and pipeline safety.” Then there’s the increased energy CCS capable coal plants would require. Capturing and compressing C02 would increase the fuel needs of a coal-fired plant by 25-40%, which means more mountaintop mining, more fly ash, and more transportation fuel. And, of course, it’s a dangerous gamble whether the damn stuff will stay buried at the end of all this…

The frustrating part is that more practical, cost effective means of decreasing the carbon footprint of coal are out there. Though clean coal will likely remain a myth, significant and immediately viable steps could be taken right now to make it cleaner.

Blue Marble Energy offers several such solutions, though (and this is a very good thing) we are by no means the only ones. A BME AGATE plant co-located with a coal-fired power plant would provide several key steps towards cleaner coal. Like a pilot fish to a shark, this symbiotic relationship would offer the following perks: flue gas from the plant could be passed through the anaerobic digester, effectively scrubbing particulates like heavy metals, and sulfur; post-digester biomass materials like lignin and other non-digestible fibers could be fed into the plant along with coal; biogas from the digester could provide energy offset for the plant, while waste heat from the plant could be utilized to increase biochemical production.

With all the hope and drive for a more sustainable world it can be hard not to drink the Kool-Aid on things like clean coal. But the cold hard truth is there’s no easy fix to our fossil fuel addiction, and anyone who claims otherwise is trying to sell something. We have to be willing to put in the work, and take small steps towards our goals. After all, it’s only by putting one foot in front of the other that we can climb mountains.

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