DOI: 10.1007/s10584-015-1388-0
Scopus记录号: 2-s2.0-84937525049
论文题名: Enhancing carbon sequestration in soil with coal combustion products: a technology for minimising carbon footprints in coal-power generation and agriculture
作者: Yunusa I.A.M. ; Blair G. ; Zerihun A. ; Yang S. ; Wilson S.C. ; Young I.M.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2015
卷: 131, 期: 4 起始页码: 559
结束页码: 573
语种: 英语
Scopus关键词: Agriculture
; Alkalinity
; Carbon
; Carbon footprint
; Coal
; Coal combustion
; Coal deposits
; Emission control
; Fly ash
; Gas emissions
; Greenhouse gases
; Lime
; Manures
; Organic carbon
; Soils
; Titanium oxides
; Agricultural emissions
; Carbon sequestration
; Coal combustion products
; Coal-fired power generation
; Environmental footprints
; Low concentrations
; Microbial populations
; Structural characteristics
; Soil pollution
; acid soil
; agricultural soil
; carbon footprint
; carbon sequestration
; coal-fired power plant
; combustion
; concentration (composition)
; emission control
; fly ash
; greenhouse gas
; industrial emission
; soil aggregate
; soil carbon
; soil emission
; soil remediation
英文摘要: Coal-fired power generation and agriculture account for more than half of global greenhouse gas emissions, but the coal fly ash (CFA) produced in the former can be a resource for reducing emissions from agriculture to minimise environmental footprints in both industries. Our aim in this study was to test how acidic and alkaline CFA addition could minimise loss of C and N from acidic soil, with or without added manure. We determined composition and structural characteristics of acidic and alkaline CFA for their capacity to adsorb organic carbon, but observed poor adsorption because of low concentrations of cenospheres and unburnt carbon as the primary absorbents in the ash. Addition of CFA had no impact on the loss of carbon or nitrogen from unmanured soil in which concentrations of these nutrients were low. Loss of carbon from manured soil was reduced by 36 % with alkaline ashes and by 3-fold with acidic ashes; while loss of N was 30–50 % lower with acidic ashes, but 28 % higher with alkaline ashes, compared with no ash treatment. The increases in C sparing with CFA addition were achieved not by direct C absorption but by restraining microbial population and respiration, and potentially emissions. Alkaline CFA increased soil pH and if used to substitute just 10 % of lime for ameliorating soil acidity would reduce CO2 emission associated with the mining of the lime and its eventual dissolution in soil by ~ 2.66 Tg or 2.8 % of Australia’s annual agricultural emissions. High concentrations of oxides of phosphorus, silicon, titanium and clay particles in acidic ashes, and oxides of cations in alkaline ashes, were associated with potential for promoting C storage and acidity amelioration in soil. © 2015, Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84564
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: School of Environmental & Rural Sciences, University of New England, Armidale, NSW, Australia; Department of Environment & Agriculture, Curtin University, Bentley, WA, Australia; Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, China
Recommended Citation:
Yunusa I.A.M.,Blair G.,Zerihun A.,et al. Enhancing carbon sequestration in soil with coal combustion products: a technology for minimising carbon footprints in coal-power generation and agriculture[J]. Climatic Change,2015-01-01,131(4)