| DOI: | 10.2172/979448
|
| 报告号: | None
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| 报告题名: | Novel Adsorbent-Reactants for Treatment of Ash and Scrubber Pond Effluents |
| 作者: | Bill Batchelor; Dong Suk Han; Eun Jung Kim
|
| 出版年: | 2010
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| 发表日期: | 2010-01-31
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| 国家: | 美国
|
| 语种: | 英语
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| 中文主题词: | PH
; 铁
; X射线
; PH值
|
| 主题词: | PH
; IRON
; X-RAY
|
| 英文摘要: | The overall goal of this project was to evaluate the ability of novel adsorbent/reactants to remove specific toxic target chemicals from ash and scrubber pond effluents while producing stable residuals for ultimate disposal. The target chemicals studied were arsenic (As(III) and As(V)), mercury (Hg(II)) and selenium (Se(IV) and Se(VI)). The adsorbent/reactants that were evaluated are iron sulfide (FeS) and pyrite (FeS{sub 2}). Procedures for measuring concentrations of target compounds and characterizing the surfaces of adsorbent-reactants were developed. Effects of contact time, pH (7, 8, 9, 10) and sulfate concentration (0, 1, 10 mM) on removal of all target compounds on both adsorbent-reactants were determined. Stability tests were conducted to evaluate the extent to which target compounds were released from the adsorbent-reactants when pH changed. Surface characterization was conducted with x-ray photoelectron spectroscopy (XPS) to identify reactions occurring on the surface between the target compounds and surface iron and sulfur. Results indicated that target compounds could be removed by FeS{sub 2} and FeS and that removal was affected by time, pH and surface reactions. Stability of residuals was generally good and appeared to be affected by the extent of surface reactions. Synthesized pyrite and mackinawite appear to have the required characteristics for removing the target compounds from wastewaters from ash ponds and scrubber ponds and producing stable residuals. |
| URL: | http://www.osti.gov/scitech/servlets/purl/979448
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/39934
|
| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 979448.pdf（6707KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Bill Batchelor,Dong Suk Han,Eun Jung Kim. Novel Adsorbent-Reactants for Treatment of Ash and Scrubber Pond Effluents. 2010-01-01.
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