CO₂-removal News

Sigurjonsson, Hafthor Ægir; et al. (2015): Climate effect of an integrated wheat production and bioenergy system with Low Temperature Circulating Fluidized Bed gasifier

Sigurjonsson, Hafthor Ægir; Elmegaard, Brian; Clausen, Lasse Røngaard; Ahrenfeldt, Jesper (2015): Climate effect of an integrated wheat production and bioenergy system with Low Temperature Circulating Fluidized Bed gasifier. In Applied Energy 160, pp.[nbsp]511–520. DOI: 10.1016/j.apenergy.2015.08.114[nbsp]

When removing biomass residues from the agriculture for bioenergy utilization, the nutrients and carbon stored within these „residual resources“ are removed as-well. To mitigate these issues the energy industry must try to conserve and not destroy the nutrients. The paper analyses a novel integration between the agricultural system and the energy system through the Low Temperature Circulating Fluidized Bed (LT-CFB) gasifier from the perspective of wheat grain production and electricity generation using wheat straw, where the effects of removing the straw from the agricultural system are assessed along with the effects of recycling the nutrients and carbon back to the agricultural system.

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The Conversation: Can solar geoengineering be part of responsible climate policy?

„There are a number of ideas for how people might intentionally alter the planet’s climate system – an approach called geoengineering. One of the most frequently discussed ideas is solar geoengineering, blocking some of sun’s energy by, for example, injecting tiny particles called sulfate aerosols into the atmosphere. But solar geoengineeering remains a controversial method of addressing climate change.“

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Harvard Science Review: Earth’s Missiles, Ready to Go?

Conclusion: „While many geoengineering solutions will likely continue being contested and therefore underdeveloped, it is worth noting that taking a greater focus in specific carbon-capture based technologies, such as chemically catalyzed reactions for “carbon”-fixation, would enable the same level of climate impact without the side effects. Although challenges abound, the development of carbon capture technology must be the next step in this fight to save this planet.“

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truthout: Techno-Optimism and Bad Science in Paris: The Problem With Carbon Capture and Storage

„The[nbsp]negotiating text in Paris contains proposed text about „zero net emission,“ based on the assumption that actual emissions can be neutralized by future „negative“ ones. This is based on conclusions in[nbsp]the 2014 report of the International Panel on Climate Change (IPCC). According to that report, most relevant models predict that „negative emissions“ in the form of bioenergy with carbon capture and storage (BECCS) would be required later this century if we are to avoid more than 2 degrees Celsius of warming.“

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