Exploring negative emission potential of biochar to achieve carbon neutrality goal in China.
Where this comes from
- Record sourced from PubMed, PMID 38316787.
- Also identified by DOI 10.1038/s41467-024-45314-y and PMC identifier 10844326.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Limiting global warming to within 1.5 °C might require large-scale deployment of premature negative emission technologies with potentially adverse effects on the key sustainable development goals. Biochar has been proposed as an established technology for carbon sequestration with co-benefits in terms of soil quality and crop yield. However, the considerable uncertainties that exist in the potential, cost, and deployment strategies of biochar systems at national level prevent its deployment in China. Here, we conduct a spatially explicit analysis to investigate the negative emission potential, economics, and priority deployment sites of biochar derived from multiple feedstocks in China. Results show that biochar has negative emission potential of up to 0.92 billion tons of CO<sub>2</sub> per year with an average net cost of US$90 per ton of CO<sub>2</sub> in a sustainable manner, which could satisfy the negative emission demands in most mitigation scenarios compatible with China's target of carbon neutrality by 2060.
Medical subject headings
- Carbon
- Carbon Dioxide
- Charcoal