气候变化领域集成服务门户(CCPortal): Carbon sequestration in support of the "4 per 1000" initiative using compost and stable biochar from hazelnut shells and sunflower husks

CCPortal

DOI	10.3390/PR8070764
	Carbon sequestration in support of the "4 per 1000" initiative using compost and stable biochar from hazelnut shells and sunflower husks
	Mikula K.; Soja G.; Segura C.; Berg A.; Pfeifer C.
发表日期	2020
ISSN	22279717
卷号	8 期号:7
英文摘要	The achievement of carbon neutrality till 2050 will require the deployment of negative carbon emission technologies like the production and soil incorporation of biochar, produced from pyrolyzed plant-based residues. The carbon sequestration potential of biochar (BC) from hazelnut (Corylus avellana L.) shells (HNS) and sunflower (Helianthus annuus L.) husks (SFH) was evaluated when the biomass was carbonized in a fixed bed reactor, in a rotary kiln and in a screw reactor. In all tested reactors, higher temperatures (>500 °C) and longer retention times increased the C concentration and stability of the biochar, with negligible effects of the reactor type and feedstock. A national case study was developed for Austria concerning the potential use of SFH-and HNS-BC in combination with compost for reaching the "4 per mille" objective. An annual soil organic carbon increase of 2.5 Mt C would be needed, requiring amendment rates of 2.2 Mt C a-1 for all annual crop areas and 0.3 Mt C a-1 for all vineyards and orchards. If compost only were used, the annual cost would be about 200 EUR ha-1 but short-term re-mineralization would have to be considered. If the more recalcitrant biochar were used only, about 2.3 t BC ha-1 would be needed at a cost of 1400-1870 EUR ha-1. The study shows in principle the feasibility of applying compost-biochar mixtures for achieving the "4 per mille" objective but in practice, supplemental soil management strategies for sequestering C will be required. © 2020 by the authors.
英文关键词	Fixed bed reactor; Pyrolysis; Rotary kiln; Screw reactor; Soil organic carbon (SOC)
来源期刊	Processes
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176629
作者单位	Institute of Chemical and Energy Engineering, University of Natural Resources and Life Sciences Vienna, Muthgasse 107, Vienna, 1190, Austria; Unidad de Desarrollo Tecnológico, Universidad de Concepción, Coronel, 4191996, Chile; AIT Austrian Institute of Technology GmbH, Konrad Lorenz-Str. 24, Tulln, 3430, Austria
推荐引用方式 GB/T 7714	Mikula K.,Soja G.,Segura C.,et al. Carbon sequestration in support of the "4 per 1000" initiative using compost and stable biochar from hazelnut shells and sunflower husks[J],2020,8(7).
APA	Mikula K.,Soja G.,Segura C.,Berg A.,&Pfeifer C..(2020).Carbon sequestration in support of the "4 per 1000" initiative using compost and stable biochar from hazelnut shells and sunflower husks.Processes,8(7).
MLA	Mikula K.,et al."Carbon sequestration in support of the "4 per 1000" initiative using compost and stable biochar from hazelnut shells and sunflower husks".Processes 8.7(2020).