Bibliographic Citation
| Document |  286 K |
|---|---|
| Title | A preliminary study of the chemistry of pore water extracted from tuff by one-dimensional compression |
| Creator/Author | Kharaka, Y.K. ; Maest, A.S. [eds.] [Geological Survey, Menlo Park, CA (United States)] ; Peters, C.A. ; Yang, I.C. [Geological Survey, Denver, CO (United States)] ; Higgins, J.D. [Colorado School of Mines, Golden, CO (United States)] ; Burger, P.A. [Bureau of Reclamation, Denver, CO (United States)] |
| Publication Date | 1992 Oct 01 |
| OSTI Identifier | OSTI ID: 138460; Legacy ID: DE92040952 |
| Report Number(s) | CONF-920761--15 |
| DOE Contract Number | AI08-92NV10874 |
| Other Number(s) | Other: ON: DE92040952 |
| Resource Type | Conference |
| Resource Relation | Conference: 7. water-rock interaction conference, Park City, UT (United States), 9-23 Jul 1992; Other Information: PBD: [1992] |
| Research Org | Geological Survey, Denver, CO (United States) |
| Sponsoring Org | USDOE, Washington, DC (United States) |
| Subject | 54 ENVIRONMENTAL SCIENCES ;05 NUCLEAR FUELS; GROUND WATER; CHEMICAL ANALYSIS; TUFF; COMPRESSION; YUCCA MOUNTAIN; HIGH-LEVEL RADIOACTIVE WASTES; UNDERGROUND FACILITIES; ROCK-FLUID INTERACTIONS; DILUTION; DISSOLUTION; TRACE AMOUNTS; CARBON DIOXIDE; CLAYS; ZEOLITES; Yucca Mountain Project |
| Description/Abstract | A specially designed and fabricated one-dimensional compression cell is being used to extract water from nonwelded and densely welded tuffs having degrees of saturation greater than 16 and 37 percent respectively. Chemical analyses of pore water obtained at increasing pressures are used to evaluate possible changes in chemistry caused by compression. The extracted pore water varies form a calcium chloride type to a sodium bicarbonate type. The mean concentration of dissolved ions generally decreases during compression. The relative abundance of the major cations varies little with increasing pressure. Possible causes of the pore-water-chemistry changes include: (1) dilution of pore water by low ionic strength adsorbed water from zeolites and clays; (2) dissolution reactions caused by the increase in dissolved carbon dioxide concentrations that may result from pressurization; (3) membrane filtration by zeolites and clays; and (4) ion exchange with the zeolites and clays. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: ED; Size: 6 p. |
| Availability | INIS; OSTI as DE92040952 |
| System Entry Date | 2008 Sep 04 |
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