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I feel like it is missing most of the important questions. What's the impact on sea life (one sentence saying we need monitoring...) The techniques used mean th
by ta988 2y ago
I feel like it is missing most of the important questions. What's the impact on sea life (one sentence saying we need monitoring...) The techniques used mean that all the microorganisms, planktons, algaes will be destroyed by those processes. What is the yield of those approaches, you remove 1000 tons, but how much do you produce to make the devices, maintain and run them,
the boats... What do you do with the CO2, that's now weight you have to move as well and put in containers that required CO2 to be made. This all should count in the equations for the credits, and from what we have seen in the past it is unlikely it will.
- Avicebron 2y agoYeah this is seems like it's reduced the complexity down to one dimension (removing the CO2) and has blown past any of that, didn't even think about the algae initially, just energy expenditures getting this up and running, but yeah, that's pretty much saying you'll solve climate change by chopping down trees and planting golf course grass
- youngtaff 2y agoThey’re not even removing that much CO2 either > Captura’s Port of Los Angeles pilot can remove about 100 tonnes of CO2 per year from seawater. The company’s new plant under construction in Hawaii will capture 10 times that amount—a measurement the company can definitively quantify. So 1,000 tonnes of CO2 / year?
- Avicebron 2y agoSo back of the sticky note math, 1,000 ton/yr, at $7.37/ton carbon credit resell value per Google "AI" header thing, that's $7,370/year profit. Hopefully that covers the boat, employee salaries, and fuel. Good job team.
- natch 2y agoMy god, exactly. But I think you mean $7,370/year revenue. Meh, words. /s
- caseyohara 2y agoTo help quantify this further, a typical passenger car emits ~5 tonnes of CO2 per year. So we’re talking about offsetting 20-200 cars per year. https://www.epa.gov/greenvehicles/greenhouse-gas-emissions-typical-passenger-vehicle https://www.epa.gov/greenvehicles/greenhouse-gas-emissions-t...
- deleted 2y ago[deleted]
- noxer 2y agoOnly if you ignore the who knows how many tons of CO2 was put into the atmosphere to create the thing. In reality that thing probably need to run several years to break even.
- vsensei 2y agoOh no, the algae, nobody thought of them!
- aziaziazi 2y ago> how much do you produce to make the devices, maintain and run them, the boats Boats consume way more fuel than a layman may think. I’ve been on a ~80m / 20people crew coast guard ship for 6 weeks and did a napkin math onboard based on tank levels and refueling date. It was +1000l/person/day of diesel (can’t remember precise numbers). We were moving ~50% or the time. In addition of the motors there were many BIG generators to make everything work: heating, sewage, hot water, AC, pumps, motors for cranes, anchor raising… you also need your motors running at least in low speed even when still to control your position and direction. I’m sure boats acting like platforms and with less crew to accommodate does consume less, however it’s still nothing comparable to an onshore plant. It work "economically" because you often manage to refuel in an port with low fuel price.
- ChuckMcM 2y agoI have wondered if you could tow a barge with the processing, then incentivize the box transports to pull the barge along behind. There are challenges with seas and storms and things like the tow line breaking. I read a proposal for an air extraction system that fit in a container, so that you could stack a few on a container ship and they would process air as they went from port to port. Typically power challenged though (you want some clean energy powering them). Nuclear powered container ships would be good for this.
- timewizard 2y ago[dead]
- alphan0n 2y agoHamilton class?
- renewiltord 2y agoYeah, this is a common reason that environmentalists oppose nuclear power. First you have to prove that what you're going to do is making an improvement. The key element to remember is that we got everything right until the 1970s. After that, it's best to not touch things.