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From leaching data to release estimates: Screening and scenario assessments of electric arc furnace (EAF) slag under unencapsulated use.
Yu, Siyuan; Garrabrants, Andrew C; DeLapp, Rossane C; Hubner, Tara; Thorneloe, Susan A; Kosson, David S.
Afiliación
  • Yu S; Department of Civil and Environmental Engineering, Vanderbilt University, PMB 351826, Nashville, TN 37235-1826, USA.
  • Garrabrants AC; Department of Civil and Environmental Engineering, Vanderbilt University, PMB 351826, Nashville, TN 37235-1826, USA.
  • DeLapp RC; Department of Civil and Environmental Engineering, Vanderbilt University, PMB 351826, Nashville, TN 37235-1826, USA.
  • Hubner T; Land, Chemicals, and Redevelopment Division, Region 8, US EPA, 1595 Wynkoop St., Denver, CO 80202, USA.
  • Thorneloe SA; Office of Research and Development, US EPA, 109 TW Alexander Dr., Research Triangle Park, NC 27711, USA.
  • Kosson DS; Department of Civil and Environmental Engineering, Vanderbilt University, PMB 351826, Nashville, TN 37235-1826, USA. Electronic address: David.Kosson@Vanderbilt.edu.
J Hazard Mater ; 479: 135522, 2024 Nov 05.
Article en En | MEDLINE | ID: mdl-39216240
ABSTRACT
Electric arc furnace (EAF) slag is the non-metallic byproduct of the primary U.S. steelmaking process. Much of the slag is marked for secondary uses as aggregates. EAF slags used as construction fill or residential groundcover are directly exposed to the environment, raising concerns of potential leaching impacts. Leaching data of EAF slags as function of eluate pH (Method 1313) and liquid-to-solid ratio (Method 1314) were used to refine an initial list of constituents of potential concern to those with potential to leach at concentrations greater than project thresholds, and to estimate release from EAF slags when used as unencapsulated groundcover. Screening assessment identified 11 of over 20 constituents requiring further assessment. Scenario-based assessments results showed that constituents with high available content and low leaching concentrations (Al, Cr, Co, Mn, Se) are persistent in contacting water over the assessment period while those with limited available content (As, Ba, Mo, V) were depleted. Aging decreased the release of Se while increasing Tl release, likely through a combination of hydration, carbonation, and cracking processes. Increasing fill depth and infiltration rates did not alter leaching concentrations; however, liquid-solid ratio for each assessment interval changed thereby impacting cumulative release.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Países Bajos