Unsustainable: 43 Million Tonnes Of Wind Turbine Blade Waste By 2050
2 New Papers Expose The Environmental Nightmare Of Wind Turbine Blade Disposal
By Kenneth Richard – No Tricks Zone – 22. June 2017
… Despite its extremely limited infiltration as a world energy source, it is assumed that a rapid expansion of wind power will ultimately be environmentally advantageous both due to its reputation as a “clean” energy and because of the potential to contribute to reduced CO2 emissions.
Recently, however, the austere environmental impacts and health risks associated with expanding wind energy have received more attention.
For example, scientists have asserted that wind turbines are now the leading cause of multiple mortality events in bats, with 3 to 5 million bats killed by wind turbines every year. Migratory bats in North America may face the risk of extinction in the next few decades due to wind turbine-related fatalities.
Frick et al., 2017
“Large numbers of migratory bats are killed every year at wind energy facilities. … Using expert elicitation and population projection models, we show that mortality from wind turbines may drastically reduce population size and increase the risk of extinction. For example, the hoary bat population could decline by as much as 90% in the next 50 years if the initial population size is near 2.5 million bats and annual population growth rate is similar to rates estimated for other bat species (λ = 1.01). Our results suggest that wind energy development may pose a substantial threat to migratory bats in North America.”
Wind Turbine Blades Last 20 Years…And Then They Are Tossed Into Landfills
Besides reducing wildlife populations, perhaps one of the most underrated negative side effects of building wind turbines is that they don’t last very long (less than 20 years) before they need to be replaced. And their blades aren’t recyclable. Consequently, 43 million tonnes (47 million tons) of blade waste will be added to the world’s landfills within the next few decades.
Liu and Barlow, 2017
“The blades, one of the most important components in the wind turbines, made with composite, are currently regarded as unrecyclable. With the first wave of early commercial wind turbine installations now approaching their end of life, the problem of blade disposal is just beginning to emerge as a significant factor for the future. … The research indicates that there will be 43 million tonnes of blade waste worldwide by 2050 with China possessing 40% of the waste, Europe 25%, the United States 16% and the rest of the world 19%.”
“Although wind energy is often claimed to provide clean renewable energy without any emissions during operation (U.S. Department of Energy, 2015), a detailed ecological study may indicate otherwise even for this stage. The manufacture stage is energy-intensive and is associated with a range of chemical usage (Song et al., 2009). Disposal at end-of-life must also be considered (Ortegon et al., 2012; Pickering, 2013; Job, 2014).A typical wind turbine (WT) has a foundation, a tower, a nacelle and three blades. The foundation is made from concrete; the tower is made from steel or concrete; the nacelle is made mainly from steel and copper; the blades are made from composite materials (Vestas, 2006; Tremeac and Meunier, 2009; Guezuraga et al., 2012). Considering these materials only, concrete and composites are the most environmentally problematic at end-of-life, since there are currently no established industrial recycling routes for them (Pimenta and Pinho, 2011; Job, 2013).”
In a new paper entitled “Unsustainable Wind Turbine Blade Disposal Practices in the United States“, Ramirez-Tejeda et al. (2017) further detail the imminent and unresolved nightmare of wind turbine blade disposal. The environmental consequences and health risks are so adverse that the authors warn that if the public learns of this rapidly burgeoning problem, they may be less inclined to favor wind power expansion. Advocates of wind power are said to be “largely ignoring the issue”. It’s an “issue” that will not be going away any time soon.
In light of its minuscule share of worldwide consumption (despite explosive expansion in recent decades), perhaps it is time to at least reconsider both the benefits and the costs of wind energy expansion.
‘Adverse Environmental Consequences’ For A Rapidly Expanding Wind Power Grid
Ramirez-Tejeda et al. (2017)
“Globally, more than seventy thousand wind turbine blades were deployed in 2012 and there were 433 gigawatts (GW) of wind installed capacity worldwide at the end of 2015. Moreover, the United States’ installed wind power capacity will need to increase from 74 GW to 300 GW3 to achieve its 20% wind production goal by 2030. To meet the increasing demand, not only are more blades being manufactured, but also blades of up to 100 meters long are being designed and produced.”
“The wind turbine blades are designed to have a lifespan of about twenty years, after which they would have to be dismantled due to physical degradation or damage beyond repair. Furthermore, constant development of more efficient blades with higher power generation capacity is resulting in blade replacement well before the twenty-year life span.”
“Estimations have suggested that between 330,000 tons/year by 2028 and 418,000 tons/year by 2040 of composite material from blades will need to be disposed worldwide. That would be equivalent to the amount of plastics waste generated by four million people in the United States in 2013. This anticipated increase in blade manufacturing and disposal will likely lead to adverse environmental consequences, as well as potential occupational exposures, especially because available technologies and key economic constraints result in undesirable disposal methods as the only feasible options.”
Problems With Landfills
“Despite its negative consequences, landfilling has so far been the most commonly utilized wind turbine blade disposal method. … Landfilling is especially problematic because its high resistance to heat, sunlight, and moisture means that it will take hundreds of years to degrade in a landfill environment. The wood and other organic material present in the blades would also end up in landfills, potentially releasing methane, a potent greenhouse gas, and other volatile organic compounds to the environment.”
“The estimated cost to put blade material in landfills, not including pretreatment and transportation costs, is approximately US $60 per ton. [A typical blade may weigh 30-40 tons]. In the United Kingdom, where landfilling organics is not yet prohibited, the active waste disposal cost (which includes plastics) is approximately US $130 per ton.”
Problems With Incineration
“Incineration of blades is another disposal method with potential for energy and/or material recovery. … Combustion of GFRP is especially problematic because it can produce toxic gases, smoke, and soot that can harm the environment and humans. Carbon monoxide and formaldehyde have been reported as residue from thermal degradation of epoxy resin. Another residue is carbon dioxide, which poses concerns regarding greenhouse gas emissions. In addition, about 60% of the scrap remains as pollutant ash after the incineration process, some of which is sent to landfills, potentially contaminating the sites. Possible emission of hazardous flue gasses is also among the issues with incinerating wind turbine blades.”
“One key issue is that all these thermal processing techniques for wind turbine blades would also require fragmentation of the material into smaller pieces through mechanical processing before being fed into the reactors, increasing energy consumption and carbon dioxide emissions.”
Problems With Mechanical Processing
“Mechanical processing is a relatively simpler disposal method that consists of cutting, shredding, and grinding the material to separate the fibers from resins, so it can be repurposed. This process is energy intensive and produces small fiber particles with poor mechanical properties that can only be used as filler reinforcement material in the cement or asphalt industries. … The dust emitted in the grinding process of FRP creates occupational health and safety risks for workers. Inhalation, as well as skin and eye contact can produce moderate irritation to mucous membranes, skin, eyes, and coughing. Occupational exposure and prolonged inhalation of such particles have been found to produce alterations of the cellular and enzymatic components of the deep lung in humans, identified as acute alveolitis.”
Problems With Chemical Degradation
“The last method is chemical degradation, which consists of first mechanically reducing the size of the blades, then degrading them using a chemical solution. … Although no industrial-level chemical recycling of thermoset polymers has been done yet, some hazardous chemicals such as nitric acids and paraformaldehyde have been used in testing and development processes. Occupational exposure to these chemicals can produce harmful respiratory diseases including potential nasal cancer, and dermal health effects.”
Full article at No Tricks Zone
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If the population of just the North American continent is 500 million and each person produces an average of 20 lbs of trash per-week, that is 10 billion lbs of trash every week, or 5 million tons of trash every week.
As such, the alarmist worry over scrap wind turbine blades being pushed by propenents of good old-fashioned fossil fuel power-generation, an industry which itself produces a tremendous amount of trash, toxic waste, pollutes the air we breathe, and emits the greenhouse gases that are killing planetary livability, is wildly-overblown.
The fact is that 43 millions tons of trash every 20 or 30 years isnt even as much weight as what’s left of the US coal-mining industry produces in mined slag every week, which is left in giant outdoor waste piles that blow dust around when the wind blows and pollute local streams and rivers when it rains or snows.
How many tons of hazardous waste is created every week from the mining and refining of the Canadian Tar Sands, including their own hazardous refinery waste slag that they leave giant piles of anywhere that the industry can get away with it, negatively-impacting the health of local residents? More than 43 million tons per-day.
Without enough electrical power generated without producing greenhouse gases, quite likely several billion people will die, creating several hundred million tons of rotting flesh as well as killing half or more of all customers, with an absolutely-ruinous outcome on the global economy.
So what will it be, 43 million tons of wind turbine trash every 20-30 years, a mere drop in a supertanker-sized bucket as far as energy-related trash is concerned, or billions of dead bodies to deal-with along with a 1000-year economic depression that makes the Great Depression look like a minor down day on Wall Street?
I would choose to put up with a miniscule amount of wind turbine trash myself.
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Comment by detroit57 | July 6, 2017 |
Actually, carbon fuels are vastly more energy dense and therefore provide far more benefit per ton of emission.
CO2 is not really a pollutant either but actually a major part of our normal atmosphere.
Ever dig into a buried nylon rug? It seems that the wind turbine problem may not equate so favorably with normal household trash either. Unlike garbage, the turbines are not going to biodegrade.
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Comment by aletho | July 6, 2017 |
RGHE theory exists only to explain why the earth is 33 C warmer with an atmosphere than without. Not so. The average global temperature of 288 K is a massive WAG at the ”surface.” The w/o temperature of 255 K is a theoretical S-B ideal BB OLR calculation at the top of – the atmosphere. An obviously flawed RGHE faux-thermodynamic “theory” pretends to explain a mechanism behind this non-existent phenomenon, the difference between two made up atmospheric numbers.
But with such great personal, professional and capital investment in this failed premise, like the man with only a hammer, assorted climate “experts” pontificate that every extreme, newsworthy weather or biospheric flora or fauna variation just must be due to “climate change.”
The Earth’s albedo/atmosphere doesn’t keep the Earth warm, it keeps the Earth cool. As albedo increases, heating and temperature decrease. As albedo decreases, heating and temperature increase.
Over 9,900 views of my five WriterBeat papers and zero rebuttals. There was one lecture on water vapor, but that kind of misses the CO2 point.
Step right up, bring science, I did.
Nick Schroeder, BSME, PE (LinkedIn)
http://writerbeat.com/articles/14306-Greenhouse—We-don-t-need-no-stinkin-greenhouse-Warning-science-ahead-
http://writerbeat.com/articles/15582-To-be-33C-or-not-to-be-33C
http://writerbeat.com/articles/19972-Space-Hot-or-Cold-and-RGHE
http://writerbeat.com/articles/16255-Atmospheric-Layers-and-Thermodynamic-Ping-Pong
http://writerbeat.com/articles/15855-Venus-amp-RGHE-amp-UA-Delta-T
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Comment by nickreality65 | March 6, 2018 |