Schlagwort: biochar

Biomass to biochar – maximizing the Carbon Value

by the Center for Sustaining Agriculture and Natural Resources (Washington State University)

For these up to date report, fourty biochar producers, practitioners, scientists, and engineers held a virtual workshop in April 2020 to chart a roadmap (184 pages, summary 18 pages) for future development of the biochar industry in the Pacific Northwest and beyond.

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Video: Can we remove carbon from the atmosphere? (True Planet)

„There is no ‘magic’ technology to solve climate change, says Professor Cameron Hepburn, Director and Professor of Environmental Economics at Oxford’s Smith School and director of the university’s Economics of Sustainability programme. ‘I wish there were,’ he says. ‘But we have to use all the existing tricks we have in the book as fast as possible to reduce emissions.’ Professor Hepburn emphasises there are some really interesting new technologies – and he thinks we should work to scale these up. In the meantime, he says, we already have some very old technology – the humble tree, which has been doing an important job for millennia – and is making a real contribution to reducing climate change. But Professor Hepburn says that right now, far from rewilding and restoring our ecosystems, we are deforesting and damaging nature with harmful agricultural practices. That needs to change. ‘Used together these various techniques…are going to make quite a big contribution to addressing climate change…what’s stopping us?’ Part of the problem, he says, is that somebody has to pay – and we need to talk about how to achieve that, without relying entirely on the taxpayer. But economics is only part of this, he says. We also need to think about a range of complex issues from politics to equity and beliefs – but, critically, the public needs to be on-board.“

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Tech Crunch: Made of Air, a maker of ‘carbon negative’ thermoplastics, locks in $5.8M

„Berlin-based climate tech startup Made of Air has closed a €5 million (~$5.8 million) seed funding round, led by Norwegian sustainability-focused family fund, TD Veen. […] As the name (kind of) implies, Made of Air (MoA) is producing durable materials for a variety of use cases that make use of (pyrolyzed) wood waste in order to lock up carbon for long periods in the resulting hardened carbon-negative thermoplastic compound. (Which is literally made from biochar and bioplastics).“

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Aquije, Camila; et al. (2021): Low tech biochar production could be a highly effective nature-based solution for climate change mitigation in the developing world

Aquije, Camila; Schmidt, Hans-Peter; Draper, Kathleen; Joseph, Stephen; Ladd, Brenton (2021): Low tech biochar production could be a highly effective nature-based solution for climate change mitigation in the developing world. In Plant Soil. DOI: 10.1007/s11104-021-05159-6.

„Aim: To compare the climate change mitigation benefits of nature-based solutions for management of municipal green waste with conventional management. Methods: This study analyzed the carbon footprint of managing one ton of municipal green waste (MGW) in Lima Peru under 4 different scenarios: 1) Final disposal in authorized landfill, 2) Final disposal in informal landfill, 3) composting and 4) biochar production using a low-cost, low tech Kon-Tiki reactor. Results: The results demonstrate the very clear potential for climate change mitigation from biochar production using low tech and therefore accessible technology in a typical developing world context. The carbon footprint of producing biochar was lower than for composting and biochar and compost both had carbon footprints significantly lower than landfilling. Conclusion We argue that the standards used by nascent platforms for trading carbon removal credits generated by biochar should relax the technology requirement to favor engagement and participation of small-scale market participants in low-income countries. Waste management in the developing world presents significant challenges but often starts from a very low base which means there is large potential for reducing emissions, as well as for sequestering carbon.“

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Joseph, Stephen; et al. (2021): How biochar works, and when it doesn’t: A review of mechanisms controlling soil and plant responses to biochar

Joseph, Stephen; Cowie, Annette L.; van Zwieten, Lukas; Bolan, Nanthi; Budai, Alice; Buss, Wolfram et al. (2021): How biochar works, and when it doesn’t: A review of mechanisms controlling soil and plant responses to biochar. In GCB Bioenergy 755 (1), p. 142582. DOI: 10.1111/gcbb.12885.

„We synthesized 20 years of research to explain the interrelated processes that determine soil and plant responses to biochar. The properties of biochar and its effects within agricultural ecosystems largely depend on feedstock and pyrolysis conditions. We describe three stages of reactions of biochar in soil: dissolution (1–3 weeks); reactive surface development (1–6 months); and aging (beyond 6 months).“

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Fridahl, Mathias; et al. (2021): Biochar Deployment Drivers and Barriers in Least Developed Countries

Fridahl, Mathias, Simon Haikola, Peter Msumali Rogers, and Anders Hansson (2021): Biochar Deployment Drivers and Barriers in Least Developed Countries. Handbook of Climate Change Management, 1–30. https://doi.org/10.1007/978-3-030-22759-3_324-1.

„‌The chapter concludes that the idea of carbon removal alone is unlikely to motivate widespread biochar deployment in LDCs.“

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Belmonte, Beatriz A.; et al. (2021): A fuzzy optimization model for planning integrated terrestrial carbon management networks

Belmonte, Beatriz A.; Aviso, Kathleen B.; Benjamin, Michael Francis D.; Tan, Raymond R. (2021): A fuzzy optimization model for planning integrated terrestrial carbon management networks. In Clean Techn Environ Policy, pp. 1–13. DOI: 10.1007/s10098-021-02119-7.

„Although recent papers have reported the development of process integration models for optimizing carbon management networks based on either biochar application or enhanced weathering, none have reported models integrating these two NETs in the same system. To address this gap, a fuzzy mixed-integer linear programming model is developed that integrates biochar application and enhanced weathering for large-scale carbon sequestration.“

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