An X-ray diffraction (XRD) and Fourier transform infrared spectroscopic (FT-IR) characterization of the speciation of arsenic (V) in Portland cement type-V

被引：122
作者：
Mollah, MYA [1 ]
Lu, F [1 ]
Cocke, DL [1 ]
机构：
[1] Lamar Univ, Gill Chair Analyt Chem & Chem Engn, Beaumont, TX 77710 USA
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 1998年 / 224卷 / 1-3期
关键词：
x-ray diffraction; Fourier transform infrared spectroscopy; calcium arsenate; solidification/stabilization; charge dispersal model;
D O I：
10.1016/S0048-9697(98)00318-0
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The speciation of As(V) bearing oxyanions (AsO43-) in cementitious environment has been investigated by X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR). The hydration of Portland cement type-V(OPC-V) was found to be retarded in presence of AsO43-, and the retardation was caused mainly by the formation of highly insoluble calcium arsenate on the surface of hydrating cement particles. Arsenate substituted analog of ettringite (Ca-6(Al2O6)(SO4)(3). 32H(2)O, was also identified by XRD analyses of the samples. Examination of the FT-IR spectra of AsO43- treated cement indicated interactions of the oxyanions with cement particles, The 'Charge Dispersed Model' has been used to elucidate the mechanism of speciation of As(V) in cement. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：57 / 68
页数：12
相关论文
共 42 条
[31]  
POLLMANN H, 1989, NEUES JB MINER ABH, V160, P133
[32]  
PRASAD G, 1994, ADV ENV SCI TECHNOLO, V26
[33]   HIGH-PRESSURE CARBONATION OF CEMENTITIOUS GROUT [J].
REARDON, EJ ;
JAMES, BR ;
ABOUCHAR, J .
CEMENT AND CONCRETE RESEARCH, 1989, 19 (03) :385-399
[34]  
REIMERS RS, 1989, Patent No. 4853208
[35]  
Socrates G., 1980, INFRARED CHARACTERIS
[36]  
Taylor H.F. W., 1990, CEMENT CHEM
[37]   OXIDATION-STATE OF ARSENIC IN COAL ASH LEACHATE [J].
TURNER, RR .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1981, 15 (09) :1062-1066
[38]  
TWIDWELL L G, 1985, Nuclear and Chemical Waste Management, V5, P297, DOI 10.1016/0191-815X(85)90005-1
[39]   Solidification/stabilization of toxic metal wastes using coke and coal combustion by-products [J].
Vempati, RK ;
Mollah, MYA ;
Chinthala, AK ;
Cocke, DL ;
Beeghly, JH .
WASTE MANAGEMENT, 1995, 15 (5-6) :433-440
[40]  
White R.G., 1964, HDB IND INFRARED ANA
12345