Thermodynamic solubility constant of Ca(OH)2 in simulated radioactive sulfate liquid waste

被引：10

作者：

Guerrero, A ^{[1
]}

Goñi, S ^{[1
]}

Hernández, MS ^{[1
]}

机构：

[1] CSIC, Inst Construct Sci Eduardo Torroja, Madrid 28033, Spain

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 04期

关键词：

D O I：

10.1111/j.1151-2916.2000.tb01289.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The thermodynamic solubility product constant (K-sp) of Ca(OH), in simulated radioactive sulfate liquid waste was experimentally determined at temperatures of 25 degrees and 40 degrees C. Synthetic solutions were prepared with pH ranging from 12.6 to >14 and ionic strength ranging from 0.25M to 3.7M. All the solutions were saturated in CaO and contained Na2SO4 to simulate the salts accompanying radioactive liquid waste. The Bromley model was applied to estimate the global ionic activity coefficients, and the K-sp value was compared with those found in the literature, The stability ranges of the different compounds formed as a function of pH were determined by X-ray diffractometry analysis, and their quantification was conducted by thermal analysis.

引用

页码：882 / 888

页数：7

共 21 条

[1] THE CHEMISTRY OF THE AQUEOUS PHASE OF PORTLAND-CEMENT [J].

BAILEY, JE ;

HAMPSON, CJ .

CEMENT AND CONCRETE RESEARCH, 1982, 12 (02) :227-236

[2] THERMODYNAMIC PROPERTIES OF STRONG ELECTROLYTES IN AQUEOUS-SOLUTIONS [J].

BROMLEY, LA .

AICHE JOURNAL, 1973, 19 (02) :313-320

[3]

Diamond S., 1975, Cement and Concrete Research, V5, P607

[4] MEASUREMENT AND PREDICTION OF PORTLANDITE SOLUBILITY IN ALKALI SOLUTIONS [J].

DUCHESNE, J ;

REARDON, EJ .

CEMENT AND CONCRETE RESEARCH, 1995, 25 (05) :1043-1053

[5] SATURATION FACTORS FOR CALCIUM HYDROXIDE AND CALCIUM SULFATES IN FRESH PORTLAND-CEMENT PASTES [J].

GARTNER, EM ;

TANG, FJ ;

WEISS, SJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1985, 68 (12) :667-673

[6] THERMODYNAMICS OF CALCIUM SILICATE HYDRATES AND THEIR SOLUTIONS [J].

GARTNER, EM ;

JENNINGS, HM .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1987, 70 (10) :743-749

[7]

GARTNER EM, 1986, P 8 INT S CHEM CEM, V3, P244

[8] Calcium hydroxide saturation factors in the pore solution of hydrated portland cement fly ash pastes [J].

Goni, S ;

Lorenzo, MP ;

Guerrero, A ;

Hernandez, MS .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1996, 79 (04) :1041-1046

[9] Effect of temperature on the leaching performance of a simulated cement-based immobilization system. Calcium and hydroxyl behaviour [J].

Goni, S ;

Hernadez, MS ;

Guerrero, A ;

Lorenzo, MP .

CONSTRUCTION AND BUILDING MATERIALS, 1996, 10 (03) :171-177

[10]

GONI S, 1995, P 3 INT C ANQUE SOL, V2, P455

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