17 February 2016, Eureka Alert, Assessing carbon capture technology. Carbon capture and storage could be used to mitigate greenhouse gas emissions and thus ameliorate their impact on climate change. The focus of this technology is on the large-scale reduction of carbon emissions from fossil-fuelled power plants. Research published in the International Journal of Decision Support Systems investigates the pros and cons, assesses the risks associated with carbon capture and provides a new framework for assessing the necessary technology. John Michael Humphries Choptiany formerly of Dalhousie University in Nova Scotia and now at the Food and Agriculture Organization of the United Nations in Rome, Italy, together with colleagues at Dalhousie, Alberta Innovates – Technology Futures (AITF), and G BACH Enterprises Incorporated, explain how they have adopted information from the environmental, social, economic and engineering fields to create their assessment framework, which incorporates utility curves, criterion weights, thresholds, decision trees, Monte Carlo simulation, critical events and sensitivity analysis. “Climate change is one of the most serious threats facing humankind,” the team reports, “Carbon capture and storage (CCS) includes a suite of technologies and processes with the goal of mitigating climate change by capturing and storing anthropogenic CO2 from various emitters, including fossil-fuelled power plants, in geological reservoirs.” The Intergovernmental Panel on Climate Change (IPCC) has recognized that CCS should be one component of our response to carbon emissions and climate change, but there are many different approaches that could be taken, all with various risks. Read More here
Tag Archives: carbon capture
15 February 2016, Science Daily, Removing carbon dioxide from the atmosphere. You may as well learn the expression “carbon-negative technology,” or Bio-CCS, right away, because it has become a talking point in technological circles. Gemini explains why. There exists a method, or technology, that is capable of reducing the level of carbon dioxide in the atmosphere. “In practice, the methods consists of capturing carbon dioxide emitted by “climate-neutral” processes such as the combustion of organic waste, pellets or sawdust,” explains SINTEF research scientist Mario Ditaranto, a specialist in combustion technology. It is then stored safely underground for ever, thus reducing its concentration in the atmosphere, because it has been eliminated from the natural carbon dioxide cycle. This is the only method we have to lower the level of atmospheric carbon dioxide, which is an important cause of our climate problems. The method is called Bio-CCS, and it is not new. Until now it has suffered from a rather mixed reputation as insignificant, expensive and limited in its range of applications. However, in the light of climate change and the recent COP21 summit in Paris, it is on the of everyone in the climatology field. In Norway, it has led to SINTEF, the environmental organisation Bellona and certain branches of Norwegian industry working together for a rapid breakthrough. “Superlight” geoengineering The reason for the growing popularity of Bio-CCS is that at the very least it can be regarded as an extremely mild and non-hazardous form of geo-engineering. The aim of geo-engineering is to counteract anthropogenic climaste changes by means of physical interventions. Launching huge sunshades into space and spraying >> millions of ?? tonnes of sulphur into the atmosphere to filter sunlight are a couple of suggestions. These have naturally led to heated debates about both the ethics and safety of such solutions. After all, what might be the consequences if we fix things in ways that only make them worse? Unavoidable More than 1000 estimates brought together in the latest report from the Intergovernmental Panel on Climate Change (IPCC)https://www.ipcc.ch/report/ar5/) show that even a significant but gradual brake on carbon dioxide emissions will not be sufficient if we are to avoid a serious climatic crisis. Read More here
1 February 2016, WorldWatch Institute, Carbon Trading a hidden threat to soil carbon sequestration? If something has a price tag, people consider its perceived monetary value. But what if, by measuring the value of our planet’s natural systems using dollar amounts alone, we are minimizing their true worth? And what if our focus on solving global problems with money is taking all of us, especially poorer countries, down the wrong road? One global solution to the world’s climate challenges—soil carbon sequestration—may soon face the “threat of the price tag.” A French climate proposal known as the 4 Per 1000 initiative—aimed at increasing the global stock of agricultural soil carbon by 0.4 percent per year on average—attracted worldwide support and media attention when it was officially launched at the December 2015 United Nations climate talks in Paris. The initiative recognizes that good organic agriculture and grazing practices could increase the soil carbon stock and lead to cascading benefits, including improvements in areas such as soil fertility, climate resilience, the nutritional value of foods, and farmers’ livelihoods, all while reversing climate change (see previous Worldwatch blog). But the potential addition of carbon trading—a market-based tool to moderate carbon emissions—into the strategy raises serious concerns.The principles of the 4 Per 1000 initiative will be clarified at a members-only meeting in the first half of 2016, to guide the projects supported by the initiative. As of now, it is unclear whether carbon trading will be part of the design, nor is it known how heavily this initiative will be branded as “a sink for current emissions,” rather than as a true means to reverse already-excessive past emissions in combination with emission-reduction strategies. However, the enthusiasm for carbon pricing at the Paris talks, together with the fact that the initiative’s goal of “0.4 percent annual increase of soil carbon stock” was back-calculated from current fossil fuel emissions (rather than based on the actual potential of soil carbon sequestration), raises serious concerns. Read more here
21 January 2016, Climate News Network, Carbon capture plans need urgent aid. Call for governments to give financial backing for technology that could help save the world from overheating by preventing CO2 escaping into the atmosphere. Governments may no longer be investing in the capture of carbon dioxide in the atmosphere. But a new study says that doesn’t mean it’s a bad idea. It argues that the world just needs to think harder and spend more to make the technology work because, to contain climate change, it may prove the only realistic and affordable way to dramatically reduce carbon emissions. Many governments appear to agree, and include carbon capture and storage in their plans to keep the world from dangerous climate change, But, at the same time, many are abandoning many trials that are needed to make it work. David Reiner, senior lecturer in technology policy at the University of Cambridge Judge Business School, argues in the new journal Nature Energy that stopping trials is foolish. Effective answer In a world addicted to fossil fuel energy, but threatened with catastrophic climate change driven by the greenhouse gas emissions from those same fossil fuels, he says that one effective answer would be to capture the carbon dioxide before it gets into the atmosphere, and then store it. He writes that the only way to find out how to do this is to spend billions on a range of possible attempts at carbon capture and storage (CCS), and then choose the best one. “If we are serious about meeting aggressive national or global emissions, the only way to do it affordably is with CCS,” Dr Reiner says. “But, since 2008, we have seen a decline in interest in CCS, which has essentially been in lock step with our declining interest in doing anything serious about climate change.” Just before the UN climate change summit in Paris last December, the UK government cancelled a £1 billion competition to support large-scale demonstration projects. Since 2008, other projects have been cancelled in the US, Canada, Australia and Europe. Read More here