Performance of the Toxicity Characteristic Leaching Procedure

2009 ◽  
pp. 199-199-18 ◽  
Author(s):  
LR Newcomer ◽  
WB Blackburn ◽  
GA Hansen
Keyword(s):  
Toxicity Characteristic Leaching Procedure ◽  
Leaching Procedure

scholarly journals Effects of Particle Size and Contact Time on the Reliability of Toxicity Characteristic Leaching Procedure for Solidified/Stabilized Waste

1998 ◽  
Vol 59 (2) ◽  
pp. 326-332 ◽  
Author(s):  
Michael A. Janusa ◽  
Jeffrey C. Bourgeois ◽  
Grant E. Heard ◽  
Nicole M. Kliebert ◽  
April A. Landry
Keyword(s):  
Particle Size ◽  
Contact Time ◽  
Toxicity Characteristic Leaching Procedure ◽  
Leaching Procedure

Collaborative Study of the Toxicity Characteristic Leaching Procedure (TCLP)

2009 ◽  
pp. 14-14-48 ◽  
Author(s):  
WB Blackburn ◽  
I Show ◽  
L Williams ◽  
DR Taylor ◽  
PJ Marsden
Keyword(s):  
Collaborative Study ◽  
Toxicity Characteristic Leaching Procedure ◽  
Leaching Procedure

scholarly journals Recycling of Reverse Osmosis (RO) Reject Water as a Mixing Water of Calcium Sulfoaluminate (CSA) Cement for Brick Production

2019 ◽  
Vol 9 (23) ◽  
pp. 5044
Author(s):  
Hwan Lee ◽  
Dongho Jeon ◽  
Haemin Song ◽  
Sung Won Sim ◽  
Dohoon Kim ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Toxicity Characteristic Leaching Procedure ◽  
Cement Pastes ◽  
Calcium Sulfoaluminate ◽  
Reject Water ◽  
Ettringite Formation ◽  
Friedel’S Salt ◽  
Mixing Water ◽  
Strength Improvement ◽  
Leaching Procedure

This study explored the possibility of using reverse osmosis (RO) reject water as a mixing water for producing cementitious bricks using calcium sulfoaluminate (CSA) cement along with gypsum, and it investigated the changes in the properties of CSA cement pastes when RO reject water was used. The results were compared with those obtained using purified water and seawater. Overall, the use of RO reject water improved the cement paste’s strength. Given that the use of RO reject water very slightly affected ettringite formation but more significantly influenced the Al2O3-Fe2O3-mono (AFm) phases (i.e., monosulfate, kuzelite, and Friedel’s salt) and amorphous aluminum hydroxide (AH3), the strength improvement was likely mainly due to the formation of Friedel’s salt rather than ettringite formation. This study also demonstrated that the use of RO reject water for brick production satisfied the Korean Standards (KS) F 4004 and toxicity characteristic leaching procedure (TCLP); thus, it is recommended to use RO reject water as a mixing water to produce CSA cement bricks for use in construction.

Assessment of toxicity of heavy metal contaminated soils by the toxicity characteristic leaching procedure

2006 ◽  
Vol 28 (1-2) ◽  
pp. 73-78 ◽  
Author(s):  
Yefang Sun ◽  
Zhengmiao Xie ◽  
Jing Li ◽  
Jianming Xu ◽  
Zuliang Chen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Contaminated Soils ◽  
Toxicity Characteristic Leaching Procedure ◽  
Leaching Procedure

Immobilization of ASH by Microwave Melting

1992 ◽  
Vol 269 ◽  
Author(s):  
Kazuki Morita ◽  
Vinh Q. Nguyen ◽  
Ron Nakaoka ◽  
John D. Mackenzie
Keyword(s):  
Electron Microscopy ◽  
Lithium Carbonate ◽  
Microwave Oven ◽  
Toxicity Characteristic Leaching Procedure ◽  
Leaching Rate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Leaching Procedure ◽  
Pb Immobilization ◽  
Scanning Electron

ABSTRACTNon-radioactive ash was immobilized via microwave melting. The ash composed mainly of silica (SiO2), titania (TiO2), calcia (CaO), alumina (Al2O3), and carbon (C). The ash was melted with various additives, such as magnetite (Fe3O4), lithium carbonate (Li2CO3), sodium carbonate (Na2CO3), and boron oxide (B2O3) by using a 2.45 GHz, 750 W microwave oven. Samples with different ash and additive concentrations were melted when subjected to microwave radiation. Ease of melting was dependent on the carbon and magnetite concentrations. Melted samples were characterized by X-ray diffraction and scanning electron microscopy (SEM), and subjected to the Toxicity Characteristic Leaching Procedure in regard to lead (Pb) immobilization. Melted samples with more than 30 wt% additives has an undetectable leaching rate of less than 0.1 ppm of lead for TCLP test, which was found to be due to the reduction and evaporation of the lead during melting. More than 80 % of the lead was lost through evaporation leaving less than 0.1 wt% Pb in the melted glass.

scholarly journals EFECTO TÓXICO Y ECOTOXICOLÓGICO DE ARENAS NEGRAS DE LA MINERÍA ARTESANAL EN MADRE DE DIOS

2017 ◽  
Vol 83 (4) ◽  
pp. 403-411
Author(s):  
Elsa Huamán Paredes ◽  
Lizardo Visitación Figueroa ◽  
Lisveth Flores del Pino ◽  
Denis Vicuña Puente
Keyword(s):  
Daphnia Magna ◽  
Lactuca Sativa ◽  
Toxicity Characteristic Leaching Procedure ◽  
Madre De Dios ◽  
Leaching Procedure

En el presente trabajo se estudió el efecto tóxico y ecotoxicológico de arenas negras (ANM) provenientes de la extracción artesanal de oro, en el departamento de Madre de Dios. Para evaluar el efecto tóxico se usó el test “Toxicity Characteristic Leaching Procedure” (TCLP) y con los lixiviados se hicieron pruebas de ecotoxicidad agudas según el protocolo de la EPA 600/3-88/029 usando microorganismos de prueba, neonatos de Daphnia Magna, con 24 horas de nacidos y en semillas de Lactuca sativa. La cuantificación de mercurio total en las muestras deANM y en los lixiviados se realizó mediante Espectroscopia de EmisiónAtómica de Plasma Acoplado Inductivamente. Los valores obtenidos de mercurio total en las muestras de ANM estuvieron en el rango de 0,1 y > 275 mg/kg de arena negra, lo que indica que superan en 1000 veces los valores de fondo. En los lixiviados la concentración de mercurio total estuvo en el rango de 0,001 y >2,75 mg/L, algunos de estos valores superan los límites máximos permisibles (0,2 mg/L) representado un potencial tóxico para la salud humana. En el caso del efecto ecotóxico sobre las daphnias, se encontró que el metal mercurio en interacción con otros metales, como el aluminio, podrían ocasionar un efecto letal. Sobre la Lactuca sativa, se determinó mayor efecto ecotóxico sobre la radícula.

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