Carbon Capture and Storage

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Details: Written by: Richard_McKie; Parent Category: Ideas; Category: Natural Philosophy (Science); Published: 25 October 2020; Hits: 8342

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(Carbon Sequestration)

The following abbreviated paper is extracted from a longer, wider-ranging, paper with reference to energy policy in New South Wales and Australia, that was written in 2008.
This extract relates solely to CCS.
The original paper that is critical of some 2008 policy initiatives intended to mitigate carbon dioxide emissions can still be read in full on this website: Read here...

Carbon Sequestration Source: Wikimedia Commons

This illustration shows the two principal categories of Carbon Capture and Storage (Carbon Sequestration) - methods of disposing of carbon dioxide (CO₂₎ so that it doesn't enter the atmosphere. Sequestering it underground is known as Geosequestration while artificially accelerating natural biological absorption is Biosequestration.

There is a third alternative of deep ocean sequestration but this is highly problematic as one of the adverse impacts of rising CO₂ is ocean acidification - already impacting fisheries.

This paper examines both Geosequestration and Biosequestration and concludes that while Biosequestration has longer term potential Geosequestration on sufficient scale to make a difference is impractical.

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Travel

Darwin after Europe

On our return from Europe we spent a few days in Darwin and its surrounds. We had a strong sense of re-engagement with Australia and found ourselves saying things like: 'isn't this nice'.

We were also able to catch up with some of our extended family.

Julia's sister Anneke was there, working on the forthcoming Darwin Festival. Wendy's cousin Gary and his partner Son live on an off-grid property, collecting their own water and solar electricity, about 120 km out of town.

We went to the Mindl markets with Anneke and her friend Chris; and drove out to see Gary, in our hire-car, who showed us around Dundee Beach in his more robust vehicle. Son demonstrated her excellent cooking skills.

Fiction, Recollections & News

The Cloud

Chapter 1 - The Party

This morning Miranda had an inspiration - real candles! We'll have real candles - made from real beeswax and scented with real bergamot for my final party as a celebration of my life and my death. This brief candle indeed!

In other circumstances she would be turning 60 next birthday. With her classic figure, clear skin and dark lustrous hair, by the standards of last century she looks half her age, barely thirty, the result of a good education; modern scientific and medical knowledge; a healthy diet and lifestyle and the elimination of inherited diseases before the ban on such medical interventions.

It's ironical that except as a result of accidents, skiing, rock climbing, paragliding and so on, Miranda's seldom had need of a doctor. She's a beneficiary of (once legal) genetic selection and unlike some people she's never had to resort to an illegal back-yard operation to extend her life.

Opinions and Philosophy

Climate Emergency

emergency
/uh'merrjuhnsee, ee-/.
noun, plural emergencies.
1. an unforeseen occurrence; a sudden and urgent occasion for action.

Recent calls for action on climate change have taken to declaring that we are facing a 'Climate Emergency'.

This concerns me on a couple of levels.

The first seems obvious. There's nothing unforseen or sudden about our present predicament.

My second concern is that 'emergency' implies something short lived. It gives the impression that by 'fire fighting against carbon dioxide' or revolutionary action against governments, or commuters, activists can resolve the climate crisis and go back to 'normal' - whatever that is. Would it not be better to press for considered, incremental changes that might avoid the catastrophic collapse of civilisation and our collective 'human project' or at least give it a few more years sometime in the future?

Back in 1990, concluding my paper: Issues Arising from the Greenhouse Hypothesis I wrote:

We need to focus on the possible.

An appropriate response is to ensure that resource and transport efficiency is optimised and energy waste is reduced. Another is to explore less polluting energy sources. This needs to be explored more critically. Each so-called green power option should be carefully analysed for whole of life energy and greenhouse gas production, against the benchmark of present technology, before going beyond the demonstration or experimental stage.

Much more important are the cultural and technological changes needed to minimise World overpopulation. We desperately need to remove the socio-economic drivers to larger families, young motherhood and excessive personal consumption (from resource inefficiencies to long journeys to work).

Climate change may be inevitable. We should be working to climate “harden” the production of food, ensure that public infrastructure (roads, bridges, dams, hospitals, utilities and so) on are designed to accommodate change and that the places people live are not excessively vulnerable to drought, flood or storm. [I didn't mention fire]

Only by solving these problems will we have any hope of finding solutions to the other pressures human expansion is imposing on the planet. It is time to start looking for creative answers for NSW and Australia now.

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