Novel Adsorbent-Reactants for Treatment of Ash and Scrubber Pond Effluents

doi:10.2172/979448

GSTDTAP > 地球科学

DOI	10.2172/979448
报告编号	None
来源ID	OSTI ID: 979448
	Novel Adsorbent-Reactants for Treatment of Ash and Scrubber Pond Effluents
	Bill Batchelor; Dong Suk Han; Eun Jung Kim
	2010-01-31
出版年	2010
语种	英语
国家	美国
领域	地球科学
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	查看原文
来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5006
专题	地球科学
推荐引用方式 GB/T 7714	Bill Batchelor,Dong Suk Han,Eun Jung Kim. Novel Adsorbent-Reactants for Treatment of Ash and Scrubber Pond Effluents,2010.