Hi,
I agree with Tito, CO2 production so far exceeds the capacity of capture technologies that we are nowhere near to breaking even. In addition, the carbon economy is based on a cycle, its not a linear process. In our example, algae produced using flue gas will be used as animal feed or a food additive, so after consumption the captured carbon will be released again as CO2. Therefore its not carbon negative, but a zero carbon solution. If we want carbon negative, then we need to make sure the organics created are not broken down again and released into the air. As an example, dried algae can be used as a soil additive or a plastic feedstock, both cases trapping most of the carbon and making the process a carbon negative one. So should we in the distant future end up capturing more CO2 than we produce, we can release it back into the cycle to keep a desired concentration if we wish to.
CO2 concentrations are actually increasing because we are bringing dormant stocks into the cycle, like carbon trapped underground via the oil industry, or carbon stored in the soil and the sea, which is brought into the cycle by farming and fishing.
And also, Tito, you may be interested to know that we received some funding to develop a proof-of-concept alga bioreactor for Mars. Algae are the top choice as fresh food source for future Mars missions so technologies to that end are being developed by Algacraft, and others. Next month we will be showcasing our work at the Space Research for Food & Water Security on Earth Conference in Dubai, if anyone is around, you are welcome to come by. The event will be held alongside the Humans in Space Flight Symposium: https://www.his2019.com/ .
Cheers,
Mate
Ice age 2.0!There's a million million tons of excess carbon dioxide in our atmosphere. 10^12. Current capacities for removing carbon are in the tens or hundreds of tons per year. So we're not there yet. My sense is the technologies become attractive for use on Mars, their atmosphere is 95% carbon dioxide.Cheers,TitoSent with ProtonMail Secure Email.‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐On Monday, October 28, 2019 8:14 AM, S James Parsons Jr <sjamesp...@gmail.com> wrote:Not to seem negative, with the great work being done by harvesting carbon from the air. But what happens when we have a CO2/green-house-gas deficit? Our lifestyles created cars, green-house producing food chain, pollution from consumable goods where the negative externality. But what happens when our lifestyle makes zero-emission cars, green-house free foods, and carbon offsetting consumer goods. What happens to the O2 harvesting companies? Do they go out of business, or do they become the enemy?On Oct 28, 2019, at 11:01 AM, Tito Jankowski <ti...@titojankowski.com> wrote:Wow Algacraft looks cool! Submit it to the AirMiners index, http://airminers.orgAlso, click "Join Community" to join AirMiners Slack, the world's largest community of scientists, engineers, and entrepreneurs mining carbon from the air.Cheers,TitoSent with ProtonMail Secure Email.‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐On Monday, October 28, 2019 2:36 AM, Ravasz <ravasz...@gmail.com> wrote:This thread is from last year...Since then we also formed an alga biotech startup: www.algacraft.comWe are currently being funded by the Edinburgh Centre for Carbon Innovation and hope to build bioreactors that that can mitigate the carbon output of other industries.Our idea is too hook our systems up to the flue gas of power plants, cement factories and similar, and use the CO2 rich gas to grow algae even more rapidly than they would with plain old air.If anyone is more interested in this, do not hesitate to write.Cheers,MateOn Sunday, 27 October 2019 21:33:24 UTC, Jonathan Cline wrote:On Friday, September 21, 2018 at 11:48:57 AM UTC-7, Tito wrote:Hi everybody,Anyone here interested in direct air capture for carbon removal? https://www.fastcompany.com/40510680/can-we-suck-enough- co2-from-the-air-to-save-the- climate The current generation of tech is chemical engineering. I'm curious what solutions biology might offer. Figured some people on this list might be thinking about it already.Thoughts?Cheers,TitoQuoteHypergiant Industries wants to use algae boxes to solve the problem....The prototype bioreactor is 3' x 3' x 3', and holds 55 gallons of water and algae. "Algae wants CO2 and light," the company explains on its website. "The light can be from the sun, or in this case, artificial light. The algae and water are pumped through a series of tubes to maximize their exposure to light sources lining the inside of the Reactor."Inside the reactor, the algae absorbs the carbon dioxide and in the process creates a biomass, essentially dried algae. In the oceans, dried algae has a crucial role: It sinks to the bottom of the ocean and creates food for microorganisms. The company says the algae biomass can then be "harvested and processed to create fuel, oils, nutrient-rich high-protein food sources, fertilizers, plastics, cosmetics, and more."The Hypergiant team claims the device is 400 times more effective than trees at carbon sequestration."With the first generation Eos, we have precise control of every aspect of the algae's environment and life cycle," Ben Lamm, CEO and founder, tells Fast Company. "It's a photobioreactor, but it's also an experimentation platform. We'll be using this platform to better understand the environment that best suits biomass production under controlled circumstances, so that we can better understand how to design reactors for the variety of environmental conditions we're going to encounter in the wild."The company has a local vision for the biogenerators. Rather than (at least at first) a field of the algae boxes in an energy grid, Hypergiant envisions HVAC units, close to exhaust and industrial pipes, breathing in the carbon dioxide from a office building.According to the International Energy Agency, buildings and building construction account for 36 percent of global final energy consumption and nearly 40 percent of the world's total direct and indirect CO2 emissions.But a prototype is still just a prototype, and Libby says the company has no plans to start selling quite yet. The next step, in spring 2020, will be to make the design for the algae boxes open-source and see what the world will make of them.End Quote
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