本文运用改进的Tessier法对某燃煤电厂静电除尘器收集的三个电场的粉煤灰进行分级提取(SEE)实验研究.SEE实验将粉煤灰中的重金属分为五个存在形态进行分级提取:水溶态(pH=7),酸溶态(pH=5),氧化物结合态,难还原态及残渣态.试验结果表明,残渣态在ESP除尘器所收集的飞灰中含量占据绝大部分;在容易迁移的离子可交换态和酸溶态中,所研究的痕量重金属元素均呈现出FA1 In this paper,Sequential extraction(SEE)is performed on fly ashes collected from three electrostatic Drecipitators in a coal-fired power plant in order to determine the binding forms of trace elements in the fly ash.Test results show that the major trace elements are enriched in the residue state in the fly ash.In the fractionation of ion-exchange and acid-soluble state,the trace elements we studv are displayed as a trend of FAl
参考文献
| [1] | Jerzy Jankowski;Colin R. Ward;David French .Mobility of trace elements from selected Australian fly ashes and its potential Impact on aquatic ecosystems[J].Fuel,2006(2):243-256. |
| [2] | GONG Xun;YAO Hong;ZHANG Dan.Leaching Characteristics of Heavy Metals in Fly Ash From Different Esps of Coal-Fired Power Plant[A].湖北武汉,2007:890-895. |
| [3] | Dijkstra JJ;van der Sloot HA;Comans RNJ .The leaching of major and trace elements from MSWI bottom ash as a function of pH and time[J].Applied Geochemistry: Journal of the International Association of Geochemistry and Cosmochemistry,2006(2):335-351. |
| [4] | A. G. Kim .The effect of alkalinity of Class F PC fly ash on metal release[J].Fuel,2006(10/11):1403-1410. |
| [5] | Maryam Mahmoudkhani;Magda Wilewska-Bien;Britt-Marie Steenari .Evaluating two test methods used for characterizing leaching properties[J].Waste Management,2008(1):133-141. |
| [6] | Xiao Wan;Wei Wang;Tunmin Ye;Yuwen Guo;Xingbao Gao .A study on the chemical and mineralogical characterization of MSWI fly ash using a sequential extraction procedure[J].Journal of hazardous materials,2006(1/3):197-201. |
| [7] | Senol Kartal;Zeki Aydin;Serife Tokalioglu .Fractionation of metals in street sediment samples by using the BCR sequential extraction procedure and multivariate statistical elucidation of the data[J].Journal of hazardous materials,2006(1):80-89. |
| [8] | Bronwyn L.Larner;Andrew J.Seen;Ashley T.Townsend .Comparative study of optimised BCR sequential extraction scheme and acid leaching of elements in the certified reference material NIST 2711[J].Analytica chimica acta,2006(2):444-449. |
| [9] | Eleonora Soco;Jan Kalembkiewicz .Investigations of sequential leaching behaviour of Cu and Zn from coal fly ash and their mobility in environmental conditions[J].Journal of hazardous materials,2007(3):482-487. |
| [10] | Tessier A CPGC;Bisson M .Sequential Extraction Proce-dure for the Speciation of Particulate Trace Metals[J].Analytical Chemistry,1979,51:844-851. |
| [11] | WANG Jin-Fang;LIU Zheng .Studies on Chemical Forms of Vanadium in Soil and Their Transformation[J].China Environmental Science,1995,15(01):34-38. |
| [12] | 冯军会,何品晶,曹群科,蔡天洁,章灿钢.不同粒径垃圾焚烧飞灰重金属分布和浸出性质[J].环境科学研究,2005(04):63-66,70. |
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