Multi-methodological characterisation of Costa Rican biochars from small-scale retort and top-lit updraft stoves and inter-methodological comparison
作者: Joeri KaalRoberto CalveloArt DonnellyAnna McBeathAntonio Martínez CortizasHugh McLaughlin
作者单位: 1nstitute for Heritage Science (Incipit), Spanish National Research Council (CSIC), Santiago de Compostela, Spain; Departamento de Edafoloxía e Química Agrícola, Fac. Bioloxía, Universidade de Santiago de Compostela, Campus Sur, Santiago de Compostela, Spain
2New Zealand Biochar Research Centre, Soil and Earth Sciences Group, Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand
3SeaChar.Org, University Place, Seattle, USA
4College of Science, Technology and Engineering,
刊名: Journal of Agriculture and Rural Development in the Tropics and Subtropics, 2017, Vol.118 (1), pp.1-15
来源数据库: Directory of Open Access Journals
关键词: BiocharCharacterisationCosta RicaRural communities 1 Introduction Biochar is thermally modified biomassSuch as charcoal obtained from urbanIndustrialAgricultural or forestry residuesRural communities
原始语种摘要: We applied common (pH, elemental analysis, thermogravimetry) and less-common (infrared spectroscopy, GACS adsorption test, pyrolysis-GC-MS, hydrogen pyrolysis) analytical procedures to a set of biochars from Costa Rica (bamboo stalk, cacao chaff, sawmill scrap, coconut husk and orchard prunings feedstocks). The biochars were produced by high temperature combustion in a top-lit updraft stove (TLUD) and low temperature anaerobic charring in a retort (RET), the latter of which was heated by the gas that evolved from the TLUD. The RET biochars exhibit a smaller adsorption capacity, higher molecular diversity and larger proportion of thermolabile materials, because of the lower degree of thermochemical alteration (DTA) and therefore limited formation of the microporous polycondensed aromatic...
全文获取路径: DOAJ  (合作)

  • chemical 化学的
  • updraft 向上气流
  • adsorption 吸附
  • anaerobic 嫌气的
  • retort 蒸馏器
  • methodological 方法论的
  • pyrolysis 加热分解
  • because 由干
  • higher 
  • their 他们的