Morphology and pH changes in leached solidified/stabilized waste forms

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:549374

Cheng, K Y ^[1]; Bishop, P L ^[2]

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1. Dames and Moore, Santa Ana, CA (United States)
2. Univ. of Cincinnati, OH (United States). Dept. of Civil and Environmental Engineering

Leaching of cement-based waste forms in acetic acid solutions with different acidic strengths has been investigated in this work. The examination of the morphology and pH profile along the acid penetration route by an optical microscope and various pH color indicators is reported. A clear-cut leaching boundary, where the pH changes from below 6 in the leached surface layers to above 12 in the unleached waste form, was observed in every leached sample.

• Sponsoring Organization: Environmental Protection Agency, Washington, DC (United States)
• OSTI ID: 549374
• Report Number(s): CONF-931119-; TRN: IM9751%%57
• Resource Relation: Conference: 3. international symposium on stabilization/solidification of hazardous, radioactive and mixed wastes, Williamsburg, VA (United States), 1-5 Nov 1993; Other Information: PBD: 1996; Related Information: Is Part Of Stabilization and solidification of hazardous, radioactive, and mixed wastes: 3. volume; Gilliam, T.M.; Wiles, C.C. [eds.]; PB: [740] p.; ASTM special technical publication 1240
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
36 MATERIALS SCIENCE
LEACHING
MORPHOLOGICAL CHANGES
WASTE FORMS
PH VALUE
SOLIDIFICATION
STABILIZATION
HAZARDOUS MATERIALS
WASTE PROCESSING