Carbon-Sequestration

We Can Use Container Ships to Sequester CO2

- Adam Clare

wind enhanced ship

Years of researchers looking into carbon sequestration have concluded two things:
1. It’s far better to reduce emissions than rely on sequestration to avoid climate catastrophe
2. Ocean-based sequestration is more efficient than direct air capture.

A team of researchers have found a way to get container ships to help with sequestration of carbon into the ocean by using an accelerated natural process. It’s well known that modern fossil-fuel powered shipping is very bad for the planet so the researchers wondered what if we could leverage the movement of ships on the water to spread limestone over greater distances? They modelled it out and this approach of using ships as a way to spread the carbon sequestration method is quite efficient and better than a stationary setup.

Calcium carbonate dissolution is the dominant negative feedback in the ocean for neutralizing the acidity from rising atmospheric carbon dioxide. Mimicking this natural process, the accelerated weathering of limestone (AWL) can store carbon as bicarbonate in the ocean for tens of thousands of years. Here, we evaluate the potential of AWL on ships as a carbon sequestration approach. We show a successful prediction of laboratory measurements using a model that includes the most recent calcite dissolution kinetics in seawater. When simulated along a Pacific shipping lane in the Estimating the Circulation and Climate of the Ocean–Darwin ocean–general circulation model, surface alkalinity and dissolved inorganic carbon increase by <1.4% after 10 years of continuous operation, leaving a small pH and partial pressure of carbon dioxide impact to the ocean while reducing 50% carbon dioxide emission in maritime transportation.

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Microwave CO2

- Adam Clare

Something that I’ve never thought about is happening in New Zealand and that’s using microwaves to store carbon in charcoal.

“The application of microwaves to charcoal making is new,” says Tim Flannery of Macquarie University in Sydney, Australia, an expert on climate change and not associated with Carbonscape. “If it increases efficiency in the charcoal-making process it could prove to be a real winner.”

The plant is months away from running at full capacity, and is currently being used to produce charcoal that can be used to fertilise soil and for academic research.

The use of charcoal as a fertiliser, or “biochar”, is well known. Nearly 500 years ago, tribes in the Amazon used to smoulder their domestic waste, and the resultant charcoal was mixed into the soil. In places in the Amazon, this terra preta, or black earth, is nearly half a metre thick.

Charcoal makes the soil more fertile by binding nutrients to itself and making them available for plants, and is extremely resistant to breakdown. “You do quite often get a very significant boost in soil fertility and water holding capacity,” says Michael Bird at the University of St Andrews, UK.

“The unknowns that remain are exactly how long [the charcoal] stays in the soil. In some circumstances it can be millions of years, or decades, depending on how it is made, and soil conditions.”

Terra Preta Soils Technology To Master the Carbon Cycle

- erich

This technology represents the most comprehensive, low cost, and productive approach to long term stewardship and sustainability.Terra Preta Soils a process for Carbon Negative Bio fuels, massive Carbon sequestration, 1/3 Lower CH4 & N2O soil emissions, and 3X Fertility Too.

SCIAM Article May 15 07;

After many years of reviewing solutions to anthropogenic global warming (AGW) I believe this technology can manage Carbon for the greatest collective benefit at the lowest economic price, on vast scales. It just needs to be seen by ethical globally minded companies.

Could you please consider looking for a champion for this orphaned Terra Preta Carbon Soil Technology?

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