DOI: 10.1016/j.atmosenv.2014.07.039
Scopus记录号: 2-s2.0-84904917565
论文题名: Natural near field sinks of hydrogen sulfide from two geothermal power plants in Iceland
作者: Olafsdottir S ; , Gardarsson S ; M ; , Andradottir H ; O
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 96 起始页码: 236
结束页码: 244
语种: 英语
英文关键词: Atmospheric sinks
; Geothermal emission
; Hydrogen sulfide
; Near field fate
Scopus关键词: Free radicals
; Geothermal fields
; Geothermal power plants
; Hydrogen sulfide
; Lakes
; Porous materials
; Sulfur
; Sulfur determination
; Uncertainty analysis
; Atmospheric oxidation
; Diffusion of H
; Geothermal resources
; Natural sinks
; Near fields
; OH radical
; Plants emission
; Study areas
; Atmospheric chemistry
; hydrogen sulfide
; hydroxyl radical
; surface water
; atmospheric pollution
; diffusion
; estimation method
; geothermal energy
; hydrogen sulfide
; oxidation
; pollutant transport
; pollution monitoring
; power plant
; surface water
; uncertainty analysis
; article
; atmosphere
; comparative study
; cooling tower
; electric power plant
; geothermal energy
; Iceland
; oxidation
; pH
; plume
; precipitation
; priority journal
; vegetation
; Iceland
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: Hydrogen sulfide (H2S) emissions have been growing with the increasing utilization of geothermal resources. Atmospheric H2S concentration has been measured and studied but less is known about the natural sinks of the chemical. This study investigates the atmospheric depletion of H2S within a 35km distance from two Icelandic power plants. The results showed that atmospheric oxidation by the OH radical was the largest sink in the area. The second largest sink was H2S uptake in surface water, in a neighboring lake, but it was, however, small compared to the reported difference of sulfur amount in the lake in- and outflow. Sulfur was found to accumulate in moss close to the power plants at a maximum rate of about 1500mgS/kg moss per year and decreased exponentially from the source, being negligible at a distance of a few kilometers. Soil uptake was limited by diffusion of H2S into the porous media and was thus much smaller than the estimated soil uptake potential. Washout with precipitation was estimated to be the smallest sink due to the low H2S reactivity in the precipitation (pH=5.6), compared to the surface water (pH ~8). Depletion of H2S from the atmosphere in the study area was estimated to be about 1.2% of the 2012 power plants emissions of over 20,000tons. Although the uncertainties in the depletion estimates were considerable, most of the H2S emitted from the power plants was strongly indicated to be transported out of the study area as H2S. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80973
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Faculty of Civil and Environmental Engineering, University of Iceland, Hjardarhagi 6, 107 Reykjavik, Iceland
Recommended Citation:
Olafsdottir S,, Gardarsson S,M,et al. Natural near field sinks of hydrogen sulfide from two geothermal power plants in Iceland[J]. Atmospheric Environment,2014-01-01,96