Agreed, but the issue is how does that and other important ideas get into CDR
policy, roadmapping and PR while seemingly more complex yet limited approaches
like BECCS take center stage - better marketing, lobbyists? Granted, BECCS
generates negative emissions energy, but there are other methods of doing this,
including some that don't rely on biology. Given the circumstances, do we
really have the luxury of ignoring any of these until they are proven (rather
than assumed to be) irrelevant?Greg Rau
From: "Schuiling, R.D. (Olaf)" <[email protected]>
To: "'[email protected]'" <[email protected]>;
"[email protected]" <[email protected]>
Sent: Sunday, August 20, 2017 2:26 AM
Subject: RE: [geo] It’s time to start talking about “negative” carbon dioxide
emissions
#yiv6674855978 #yiv6674855978 -- _filtered #yiv6674855978
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div.yiv6674855978WordSection1 {}#yiv6674855978 Well, the message is clear, but
when I propose the most scalable and proven process, and probably the cheapest
way, not many people seem to listen. So again: 1:The weathering of olivine
(and some similar rocks as well) has made life possible on Earth 2: Life itself
(mainly marine life), by practically storing all CO2 as limestones (made up of
the calcite skeletons of corals, shellfish and plankton) has provided a huge
storage capacity for CO2. Carbonate sediments contain about a million times all
the CO2 in seas, the atmosphere and the biosphere together. 3. The needed
additional storage capacity because we burn in a few hundred years all the
coal, oil and natural gas that has taken hundreds of million years to form can
be found in mining, milling and spreading olivine at locations which make rapid
weathering of olivine possible, like tropical countries with high rainfall, or
beaches with a strong surf, where coarse olivine grains can be dumped. These
grains will collide in the surf, by which small slivers of olivine are knocked
off. We have shown that thee slivers often are already weathered within ten
days in the saline water. 4. There are much more olivine massifs at the Earth’s
surface than we will ever need to rebalance the input and output of CO2. These
massifs can be mined in open pit mines. In order to minimize transport costs,
such olivine mines should be strategically spread over the Earth and care can
be taken to spread their locations in such a way that developing countries
profit from the employment provided by the mining exploitation. 5. Spreading
olivine grains can be done in such a way that other advantages of this
spreading can also be used. 6. Olivine is the most common mineral on Earth. I
think that developing many, mostly unproven technologies to counter climate
change is silly, as we have a natural process that has proven its validity
during 4.5 billion years, Olaf Schuiling From:
[email protected] [mailto:[email protected]]On
Behalf Of Greg Rau
Sent: zondag 20 augustus 2017 1:22
To: [email protected]
Subject: [geo] It’s time to start talking about “negative” carbon dioxide
emissions
https://www.vox.com/energy-and-environment/2017/8/18/16166014/negative-emissions
"...it’s time for governments to start implementing policies that
incentivize the development of carbon removal technologies. And not just
one-off pilot projects, either, like the one that is spectacularly failing in
Mississippi, but the kinds of policies that will build up an industry that can
expand into gigatons. Just demonstrating that the technology can work is no
longer enough. Time to think about scale."
GR - esp, thinking beyond land biology. --
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