DOI: 10.1016/j.atmosenv.2015.10.070
Scopus记录号: 2-s2.0-84946401489
论文题名: Effects of moisture content on wind erosion thresholds of biochar
作者: Silva F ; C ; , Borrego C ; , Keizer J ; J ; , Amorim J ; H ; , Verheijen F ; G ; A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 121
结束页码: 128
语种: 英语
英文关键词: Bagnold model
; Biochar
; Particle size
; Threshold friction velocity
; Wind tunnel
Scopus关键词: Friction
; Industrial research
; Moisture determination
; Particle size
; Soil conditioners
; Soils
; Tribology
; Velocity
; Wind tunnels
; Adhesive effect
; Bio chars
; Coal particles
; Different moisture contents
; Small particles
; Storage and handling
; Threshold friction velocities
; Wind erosions
; Moisture
; biochar
; charcoal
; unclassified drug
; biomass
; charcoal
; coal
; friction
; gravimetry
; guideline
; moisture content
; particle size
; performance assessment
; public health
; pyrolysis
; threshold
; wind erosion
; wind tunnel
; Article
; electric conductivity
; force
; friction
; gravity
; leaching
; moisture
; particle size
; pH
; priority journal
; pyrolysis
; response surface method
; velocity
; water content
; wind erosion
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Biochar, i.e. pyrolysed biomass, as a soil conditioner is gaining increasing attention in research and industry, with guidelines and certifications being developed for biochar production, storage and handling, as well as for application to soils. Adding water to biochar aims to reduce its susceptibility to become air-borne during and after the application to soils, thereby preventing, amongst others, human health issues from inhalation. The Bagnold model has previously been modified to explain the threshold friction velocity of coal particles at different moisture contents, by adding an adhesive effect. However, it is unknown if this model also works for biochar particles. We measured the threshold friction velocities of a range of biochar particles (woody feedstock) under a range of moisture contents by using a wind tunnel, and tested the performance of the modified Bagnold model. Results showed that the threshold friction velocity can be significantly increased by keeping the gravimetric moisture content at or above 15% or greater to promote adhesive effects between the small particles. For the specific biochar of this study, the modified Bagnold model accurately estimated threshold friction velocities of biochar particles up to moisture contents of 10%. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81443
Appears in Collections: 气候变化事实与影响
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作者单位: University of Aveiro, Centre for Environmental and Marine Studies (CESAM), Department of Environment and Planning, Campus Santiago, Aveiro, Portugal; Swedish Meteorological and Hydrological Institute (SMHI), Air Quality Research Unit, Norrköping, Sweden
Recommended Citation:
Silva F,C,, Borrego C,et al. Effects of moisture content on wind erosion thresholds of biochar[J]. Atmospheric Environment,2015-01-01,123