高砷废渣玻璃固化研究
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- 英文论文题名：The study of the vitrification of arsenic-rich residue
- 论文作者：赵宗文 ; 柴立元 ; 闵小波 ; 李威
- 英文论文作者：Zhao Zong-wen ; Chai Li-yuan ; MIN Xiao-bo ; Li Wei ; School of Metallurgy and Environment ; Central South University ; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution
- 年：2016
- 作者机构：中南大学冶金与环境学院;国家重金属污染防治工程技术研究中心;
- 论文关键词：玻璃固化体 ; 固化 ; 砷
- 英文论文关键词：vitrification ; immobilized ; Arsenic
- 会议召开时间：2016-12-01
- 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
- 语种：中文
- 分类号：X705
- 学会代码：HJKP
- 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：中国环境科学学会
- 学会名称：中国环境科学学会
- 页数：6
- 文件大小：1177k
- 原文格式：D
- 会议级别：全国
摘要
采用美国环保部规定的毒性特性浸出程序法(TCLP)以及x-射线衍射(XRD)和扫面电镜(SEM)分析了砷酸钠为主的高砷废渣固化前后的特性,研究表明:固化前砷酸钠废渣中砷浸出浓度高达6380mg/L属于危险废物,采用玻璃固化后玻璃固化体中砷的浸出毒性浓度最大为4.49mg/L小于限定值5mg/L;XRD结果显示,砷酸钠废渣中砷的主要物相为Na_4As_2O_7,Na_3AsO_4,以及NaAsO_3,NaAsO_2,固化后玻璃固化体呈现出明显的非晶态;SEM电镜研究表明,玻璃固化后原本松散,无序的表面变得致密光滑。
The vitrification of arsenic-sodium waste residue was analyzed by USEPA toxicity characteristic leaching procedure(TCLP), x-ray diffraction(XRD) and scanning electron microscopy(SEM). The results indicated that the arsenic leaching concentration of the arsenic-sodium waste residue was 6380mg/L, which was hazardous waste according to USEPA. However, arsenic concentrations in all leachate were found to be lower than 5mg/L and the maximum arsenic leaching concentration was 4.49 mg/L; XRD result proved that the arsenic in the residue in the form of Na_4As_2O_7, Na_3AsO_4, and NaAsO_3, NaAsO_2 and the vitrification presented obvious x-amorphous; The SEM result indicated the vitrification became smooth and the structure became compact.
The vitrification of arsenic-sodium waste residue was analyzed by USEPA toxicity characteristic leaching procedure(TCLP), x-ray diffraction(XRD) and scanning electron microscopy(SEM). The results indicated that the arsenic leaching concentration of the arsenic-sodium waste residue was 6380mg/L, which was hazardous waste according to USEPA. However, arsenic concentrations in all leachate were found to be lower than 5mg/L and the maximum arsenic leaching concentration was 4.49 mg/L; XRD result proved that the arsenic in the residue in the form of Na_4As_2O_7, Na_3AsO_4, and NaAsO_3, NaAsO_2 and the vitrification presented obvious x-amorphous; The SEM result indicated the vitrification became smooth and the structure became compact.
引文
[1]S.Wang,C.N.Mulligan,Occurrence of arsenic contamination in Canada:Sources,behavior and distribution,Science of The Total Environment,366(2006)701-721.
[2]B.Gupta,Z.Begum I,Separation and removal of arsenic from metallurgical solutions using bis(2,4,4-trimethylpentyl)dithiophosphinic acid as extractant,Separation and Purification Technology,63(2008)77-85.
[3]K.-R.Kim,B.-T.Lee,K.-W.Kim,Arsenic stabilization in mine tailings using nano-sized magnetite and zero valent iron with the enhancement of mobility by surface coating,Journal of Geochemical Exploration,113(2012)124-129.
[4]C.-J.Shih,C.-F.Lin,Arsenic contaminated site at an abandoned copper smelter plant:waste characterization and solidification/stabilization treatment,Chemosphere,53(2003)691-703.
[5]J.Xue,W.Wang,Q.Wang,S.Liu,J.Yang,T.Wui,Removal of heavy metals from municipal solid waste incineration(MSWI)fly ash by traditional and microwave acid extraction,Journal of Chemical Technology&Biotechnology,85(2010)1268-1277.
[6]Y.-M.Lin,S.-Q.Zhou,S.-I.Shih,S.-L.Lin,L.-C.Wang,G.-P.Chang-Chien,Emissions of polybrominated diphenyl ethers during the thermal treatment for electric arc furnace fly ash,Aerosol Air Qual.Res,12(2012)237-250.
[7]P.Hrma,J.V.Crum,P.R.Bredt,L.R.Greenwood,B.W.Arey,H.D.Smith,Vitrification and testing of a Hanford high-level waste sample.Part 2:Phase identification and waste form leachability,Journal of Nuclear Materials,345(2005)31-40.
[8]Y.-M.Kuo,J.-E.Chang,C.-H.Jin,J.-Y.Lin,G.-P.Chang-Chien,Vitrification for reclaiming spent alkaline batteries,Waste Management,29(2009)2132-2139.
[9]Y.-M.Kuo,An alternative approach to recovering valuable metals from zinc phosphating sludge,Journal of Hazardous Materials,201–202(2012)265-272.
[10]G.Baret,R.Madar,C.Bernard,Silica‐Based Oxide Systems I.Experimental and Calculated Phase Equilibria in Silicon,Boron,Phosphorus,Germanium,and Arsenic Oxide Mixtures,Journal of The Electrochemical Society,138(1991)2830-2835.
[2]B.Gupta,Z.Begum I,Separation and removal of arsenic from metallurgical solutions using bis(2,4,4-trimethylpentyl)dithiophosphinic acid as extractant,Separation and Purification Technology,63(2008)77-85.
[3]K.-R.Kim,B.-T.Lee,K.-W.Kim,Arsenic stabilization in mine tailings using nano-sized magnetite and zero valent iron with the enhancement of mobility by surface coating,Journal of Geochemical Exploration,113(2012)124-129.
[4]C.-J.Shih,C.-F.Lin,Arsenic contaminated site at an abandoned copper smelter plant:waste characterization and solidification/stabilization treatment,Chemosphere,53(2003)691-703.
[5]J.Xue,W.Wang,Q.Wang,S.Liu,J.Yang,T.Wui,Removal of heavy metals from municipal solid waste incineration(MSWI)fly ash by traditional and microwave acid extraction,Journal of Chemical Technology&Biotechnology,85(2010)1268-1277.
[6]Y.-M.Lin,S.-Q.Zhou,S.-I.Shih,S.-L.Lin,L.-C.Wang,G.-P.Chang-Chien,Emissions of polybrominated diphenyl ethers during the thermal treatment for electric arc furnace fly ash,Aerosol Air Qual.Res,12(2012)237-250.
[7]P.Hrma,J.V.Crum,P.R.Bredt,L.R.Greenwood,B.W.Arey,H.D.Smith,Vitrification and testing of a Hanford high-level waste sample.Part 2:Phase identification and waste form leachability,Journal of Nuclear Materials,345(2005)31-40.
[8]Y.-M.Kuo,J.-E.Chang,C.-H.Jin,J.-Y.Lin,G.-P.Chang-Chien,Vitrification for reclaiming spent alkaline batteries,Waste Management,29(2009)2132-2139.
[9]Y.-M.Kuo,An alternative approach to recovering valuable metals from zinc phosphating sludge,Journal of Hazardous Materials,201–202(2012)265-272.
[10]G.Baret,R.Madar,C.Bernard,Silica‐Based Oxide Systems I.Experimental and Calculated Phase Equilibria in Silicon,Boron,Phosphorus,Germanium,and Arsenic Oxide Mixtures,Journal of The Electrochemical Society,138(1991)2830-2835.