Volcanoes' Unsuitability for Plastic Disposal Versus Geothermal Energy Use - Episode Hero Image

Volcanoes' Unsuitability for Plastic Disposal Versus Geothermal Energy Use

Original Title:

TL;DR

  • Throwing plastic waste into volcanoes releases toxic fumes that cannot be effectively filtered, unlike controlled incineration which can generate energy and capture pollutants.
  • Harnessing geothermal energy in Iceland, by extracting hot water from volcanoes, provides approximately 80% of the nation's heating and hot water needs.
  • Basaltic lava, common in Hawaii, is dense and viscous, causing objects to sit on top and burn rather than sink and be consumed.
  • Volcanic eruptions create "Pele's Hair," fine glass fibers formed from stretching lava, which are beautiful but can be mistaken for animal hair.
  • While close proximity to some lava flows is possible with protective gear, the intense heat and radiant energy can cause harm if approached too closely.
  • Volcanic eruptions produce powerful, low-frequency booming sounds that are felt as vibrations through the body, alongside the acrid smell of sulfur dioxide.
  • Explosive volcanoes like those in the Pacific Ring of Fire have cooler magmas (700-800°C) than basaltic volcanoes (around 1000°C) due to chemical changes and water content during ascent.

Deep Dive

Volcanoes, while powerful natural phenomena, are not viable solutions for large-scale plastic waste disposal due to uncontrolled toxic emissions. While volcanic heat can be harnessed for geothermal energy, directly incinerating plastic in active volcanoes would release harmful fumes into the atmosphere without adequate filtration, unlike controlled industrial incinerators.

Volcanic heat is effectively utilized in regions like Iceland, where geothermal power provides approximately 80% of the nation's heating and electricity by drilling into volcanic systems to extract hot water. This demonstrates a practical application of volcanic energy for sustainable purposes.

Direct interaction with lava flows requires significant caution, even for experienced volcanologists. Lava, particularly basaltic types found in Hawaii, possesses a surprising strength and viscosity that prevents objects from sinking in, causing them to sit on top and burn. Realistic portrayals of lava, such as Gollum's demise in "Lord of the Rings," are inaccurate; individuals or objects would likely burn on the surface rather than be consumed as if falling into a liquid. The proximity to lava flows is also dependent on their viscosity and the surrounding environment; while some stable flows allow for close observation and even cooking, others, especially those interacting with water or ice, can become unpredictably explosive, necessitating a considerable safe distance. The intense heat radiating from active lava flows is comparable to a bonfire but significantly amplified, creating a palpable and potentially dangerous sensation.

Volcanic temperatures vary, with basaltic lava from Hawaii reaching around 1000 degrees Celsius, while more explosive volcanoes in the Pacific Ring of Fire can have slightly cooler magmas, between 700-800 degrees Celsius. These temperature differences are not due to magma origin but rather the evolving chemistry and water content as magma journeys to the surface, particularly in subduction zones.

"Pele's hair," named after the Hawaiian goddess of volcanoes, are fine glass fibers formed from extruding lava or bursting bubbles. While beautiful and potentially mistaken for animal hair, these fibers are generally not a significant health risk to tourists observing eruptions from a safe distance, as their large size prevents deep inhalation into the respiratory system. However, volcanic plumes themselves can contain harmful chemicals and potentially asbestos-like fibers in other volcanic environments, necessitating protective measures like gas masks for prolonged exposure or close proximity.

Experiencing an active eruption is an overwhelming sensory event. The booming sounds are felt physically through vibrations in addition to being heard. The air is often filled with the acrid smell of sulfur dioxide, which can irritate the eyes and throat, and in other volcanic areas, the distinct smell of hydrogen sulfide (rotten eggs) may be present. The visual spectacle is a dramatic shift in color palette, dominated by black, orange, yellow, and red hues. Mount Etna in Sicily and Villarrica volcano in Chile are highlighted as particularly special locations for fieldwork, offering both geological fascination and unique environmental experiences, from stunning conical structures to the culinary opportunities presented by volcanic heat.

Action Items

  • Audit plastic waste disposal: Evaluate current incinerator filtration effectiveness and compare to potential volcanic fume dispersion risks.
  • Design geothermal energy system: Investigate feasibility of drilling into volcanic edifices for hot water extraction to drive turbines for electricity generation.
  • Develop Pele's Hair sampling protocol: Create guidelines for safe collection and analysis of glass fiber extrusions, specifying protective equipment and customs declaration procedures.
  • Measure lava flow heat impact: Conduct controlled experiments to quantify heat transfer from basaltic lava flows at varying distances, using oven mitts and similar protective gear.

Key Quotes

"The problem with throwing it into an active volcano is that active volcanoes are very hot and so what that will do is is burn the burn the plastic debris this releases toxic fumes uh as well as as well as other stuff as well as carbon as well as of course um and the issue when you're doing that in an active volcano is that's quite tricky to fit active volcanoes with good filtration devices to get rid of all those toxic fumes whereas we have a much better chance of doing that if we do it if we if we burn plastic waste in in incinerators and generate uh heat energy and electrical energy as well"

Tamson Maher explains that while incinerating plastic waste can generate energy, attempting to dispose of it in active volcanoes is problematic. Maher argues that volcanoes lack the necessary filtration systems to capture toxic fumes released from burning plastic, unlike controlled incinerators. This means that harmful emissions would be dispersed into the atmosphere.


"so um i was just in iceland earlier this year uh and iceland they have a big program of uh harnessing the heat of their volcanoes so they drill into the volcanoes and extract hot water that's flowing through the volcanic edifices and use that to to drive turbines to get electricity they also put it through heat exchangers um and heat hot water that then they pipe down from the highlands to the cities like reykjavik um and i think about 80 of heating or space heating and hot water in iceland is actually driven by geothermal power"

Tamson Maher highlights Iceland's successful utilization of geothermal energy derived from volcanic heat. Maher describes how Iceland drills into volcanoes to extract hot water, which is then used to power turbines for electricity generation and to heat water for municipal use. Maher notes that approximately 80% of Iceland's heating and hot water needs are met through this geothermal power.


"so actually to get stuff to get a sample of lava you have to push really hard into it or sort of hack at it with your with a hammer or something like that really um and you need special protective equipment so if you if you dropped something on a lava flow it would sit on top of the lava flow in most cases and burn um unless it's made of of heat resistant material"

Tamson Maher explains the physical properties of lava and the challenges of sampling it. Maher details that lava, particularly basaltic lava found in places like Hawaii, possesses a significant strength that requires considerable force to penetrate. Maher also points out that most objects dropped onto a lava flow would likely sit on top and burn rather than sink, unless made of highly heat-resistant material.


"if you have things like some of the flow fronts on hawaii that are relatively stable um and they're kind of doing these these outbursts that you can see happening um you can get you can get pretty close i mean you can see pictures and video online of people uh actually in uh the recent icelandic eruptions and they're kind of cooking hot dogs um putting coffee pots on the flow on the flow fronts um you know cooking bacon and eggs uh and stuff like that so you can get very very close but you would you know you would need to have oven gloves and that type of thing"

Tamson Maher discusses the proximity one can safely approach to certain lava flows, particularly those in Hawaii. Maher notes that stable flow fronts can allow for close observation, with people even cooking food on them, though Maher stresses the need for protective gear like oven gloves. Maher contrasts this with other lava flows, suggesting caution is necessary depending on the flow's viscosity and the surrounding terrain.


"so pele's hair is uh is named after her pele's hair is amazing stuff uh it's basically formed when when a basaltic lava erupts or when bubbles burst even on a lava lake surface you get this extrusion of glass fibers so this stretching of fine glass fibers and then they break and they come up with the hot gases and they collect um on the ground or they collect around vegetation or any rocks that you have and it looks remarkably like animal hair but it's actually more like glass wool or something like that that you might use for for diy for home tasks"

Tamson Maher describes Pele's hair, a volcanic phenomenon named after the Hawaiian goddess of volcanoes. Maher explains that Pele's hair is formed from fine glass fibers extruded during basaltic lava eruptions or when bubbles burst on a lava lake surface. Maher notes its appearance resembles animal hair but is akin to glass wool, and these fibers are carried upward with hot gases.


"and the amazing thing about being near an erupting volcano is that the booming sounds are incredible and you hear them through your ears but you also feel them through your body so it's not just because they're so loud that you feel the sound waves through your body you're also feeling the vibrations because they're coming from inside the earth actually traveling through the ground and out through your body as well so it's it's an incredible kind of sounding experience because the sound is kind of hitting you from all directions and then there's the the smells and i guess the most overwhelming smells in volcanic areas are normally the sulfur gases"

Tamson Maher conveys the sensory experience of being near an erupting volcano, emphasizing both auditory and physical sensations. Maher explains that the booming sounds are felt not only through hearing but also as vibrations through the body due to seismic activity. Maher also mentions the overwhelming presence of sulfur gases, which can have a distinct smell and cause a burning sensation.

Resources

External Resources

Books

  • "Lord of the Rings" - Mentioned as an example of unrealistic depiction of lava interaction.

People

  • Tamson Maher - Volcanologist interviewed about volcano behavior and safety.
  • Flora Lichtman - Host of Science Friday.
  • Kathy - Listener who asked about plastic waste disposal in volcanoes.
  • Gollum - Character from "Lord of the Rings" mentioned in relation to lava interaction.
  • Susan - Listener who asked about temperature differences in volcanoes.
  • Jackie - Listener who asked about Pele's hair.
  • Freddie - Mentioned as a relative requiring a holiday gift.

Organizations & Institutions

  • Bear Science - Mentioned as a supporter of rigorous scientific processes.
  • Mathworks - Creator of MATLAB and Simulink, mentioned as a supporter of Science Friday.
  • Alienware - Mentioned as a supporter of Science Friday, offering deals on gaming PCs and monitors.
  • AT&T - Mentioned as a supporter of Science Friday, highlighting network speed and reliability.
  • Givewell - Mentioned as a supporter of Science Friday, focused on funding cost-effective non-profit programs.
  • Half Price Books - Mentioned as a retailer for holiday gifts.
  • Walgreens - Mentioned for holiday gift shopping with discounts.
  • INGV (Istituto Nazionale di Geofisica e Vulcanologia) - Mentioned as colleagues of Tamson Maher in Italy.
  • University of Palermo - Mentioned as colleagues of Tamson Maher.
  • University of Catania - Mentioned as colleagues of Tamson Maher.
  • University of Oxford - Tamson Maher's affiliation.
  • Yale University - Partnered with OMGYES for research on pleasure.
  • Indiana University - Partnered with OMGYES for research on pleasure.

Websites & Online Resources

  • mathworks.com - Website for Mathworks.
  • alienware.com/deals - Website for Alienware deals.
  • givewell.org - Website for Givewell.
  • omgyes.com - Website for OMGYES, sharing research on pleasure.
  • hpb.com - Website for Half Price Books.

Other Resources

  • Pele's Hair - Extrusion of glass fibers formed from erupting lava or bursting bubbles, named after the Hawaiian goddess of volcanoes.
  • Basaltic Lava - Type of lava found in Hawaii, described as hotter and runnier.
  • Pele - Hawaiian goddess of volcanoes.
  • Halema'uma'u Crater - Crater on Kilauea where Pele is believed to live.
  • Pele's Tears - Mentioned in relation to Pele's hair.
  • Pele's Comb - Mentioned in relation to Pele's hair.
  • Pele's Necklace - Mentioned in relation to Pele's hair.
  • Pele's Hair Fibers - Described as large and unlikely to penetrate deep into the respiratory system.
  • Volcanic Plumes - Mentioned as containing potentially harmful chemicals.
  • Harmful Crystals - Mentioned as potentially present in volcanic fumes from some volcanoes.
  • Asbestos Fibers - Compared to harmful crystals found in some volcanic fumes.
  • Hydrogen Sulfide - Described as having a "rotten egg" smell, a volcanic gas.
  • Sulfur Dioxide - Described as having an "acrid burnt matches" smell, a volcanic gas.
  • Geothermal Power - Harnessing volcanic heat for electricity and heating, as done in Iceland.
  • MATLAB - Software for technical computing.
  • Simulink - Software for model-based design.
  • Plastic Waste Disposal - Discussed as a problem that volcanoes are not a viable solution for due to toxic fumes.
  • Incinerators - Mentioned as a method for burning plastic waste to generate heat energy with better filtration.
  • Mount Doom - Fictional volcano from "Lord of the Rings."
  • Glass-Shard Hairballs - Mentioned in the episode description.
  • Lava Lakes - Mentioned in relation to Pele's hair formation.
  • DIY (Do It Yourself) - Mentioned in relation to glass wool.
  • Subduction Zones - Areas like the Pacific Ring of Fire where magma chemistry can change.
  • Pacific Ring of Fire - Mentioned as an area with more explosive volcanoes.
  • Mount Pinatubo - Mentioned as an example of a famous big explosive eruption.
  • Kilauea Volcano - Mentioned as currently erupting on the Big Island of Hawaii.
  • Pele's Hair - Extrusion of glass fibers formed from erupting lava or bursting bubbles.
  • Mount Etna - Volcano in Sicily, described as a special place to work with changing summit and good colleagues.
  • Villarrica Volcano - Volcano in Chile, described as a beautiful mountain with a perfect conical structure and ice cap.
  • Crampons - Equipment used for walking on ice.
  • Volcanic Eruptions - Described as having booming sounds felt through ears and body, and vibrations through the ground.
  • Volcanic Gases - Mentioned as potentially burning the eyes and skin.
  • Rotten Egg Smell - Characteristic smell of hydrogen sulfide.
  • Acrid Burnt Matches Smell - Characteristic smell of sulfur dioxide.
  • Holiday Gift - Mentioned in relation to shopping at Half Price Books and Walgreens.
  • Bonus - Mentioned in relation to needing a gift without receiving a bonus.
  • Savings - Mentioned in relation to Alienware and Walgreens promotions.
  • Holiday Road - Mentioned in relation to Walgreens.
  • Root Score Report - Used by AT&T to measure network performance.
  • Low Overhead Costs - Fundraising metric discussed by Givewell.
  • Efficient Fundraising - Fundraising metric discussed by Givewell.
  • Impact on People's Lives - Focus of Givewell's research.
  • Highly Cost-Effective Programs - Focus of Givewell's funding.
  • Foreign Aid Funding Cuts - Being analyzed by Givewell.
  • Pleasure and Intimacy - Research topic covered by OMGYES.
  • Consensual Partnership - Mentioned in relation to OMGYES research.
  • Evidence-Backed Methods - Offered by OMGYES.
  • Games, Toys, Comics - Items available at Half Price Books.
  • Record Collectors - Mentioned as a category of gift at Half Price Books.
  • Regular Collectors - Mentioned as a category of gift at Half Price Books.

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