Comparing metal leaching and toxicity from high pH, low pH, and high ammonia fly ash

Anthony V. Palumbo; Jana R. Tarver; Lisa A. Fagan; Meghan S. McNeilly; Rose Ruther; L. Suzanne Fisher; James E. Amonette

doi:10.1016/j.fuel.2006.11.018

Comparing metal leaching and toxicity from high pH, low pH, and high ammonia fly ash

Anthony V. Palumbo
, Jana R. Tarver
, Lisa A. Fagan
, Meghan S. McNeilly
, Rose Ruther
, L. Suzanne Fisher
, James E. Amonette

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Previous work with both class F and class C fly ash indicated minimal leaching from most fly ashes tested. However, the addition of NO_x removal equipment might result in higher levels of ammonia in the fly ash. We have recently been testing fly ash with a wide range of pH (3.7-12.4) originating from systems with NO_x removal equipment. Leaching experiments were done using dilute CaCl₂ solutions in batch and columns and a batch nitric acid method. All methods indicated that the leaching of heavy metals was different in the highest ammonia sample tested and the high pH sample. However, toxicity testing with the Microtox

Original language	English
Pages (from-to)	1623-1630
Number of pages	8
Journal	Fuel
Volume	86
Issue number	10-11
DOIs	https://doi.org/10.1016/j.fuel.2006.11.018
State	Published - Jul 2007

Funding

This research is sponsored by the US Department of Energy, Office of Fossil Energy and DOE National Energy Technology Laboratory (NETL). John Litynski is the program manager. Oak Ridge National Laboratory is managed by the University of Tennessee-Battelle, LLC, for the US Department of Energy under contract DE-AC05-00OR22725.

Keywords

Carbon sequestration
Fly ash
Metals

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10.1016/j.fuel.2006.11.018

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title = "Comparing metal leaching and toxicity from high pH, low pH, and high ammonia fly ash",

abstract = "Previous work with both class F and class C fly ash indicated minimal leaching from most fly ashes tested. However, the addition of NOx removal equipment might result in higher levels of ammonia in the fly ash. We have recently been testing fly ash with a wide range of pH (3.7-12.4) originating from systems with NOx removal equipment. Leaching experiments were done using dilute CaCl2 solutions in batch and columns and a batch nitric acid method. All methods indicated that the leaching of heavy metals was different in the highest ammonia sample tested and the high pH sample. However, toxicity testing with the Microtox",

keywords = "Carbon sequestration, Fly ash, Metals",

author = "Palumbo, \{Anthony V.\} and Tarver, \{Jana R.\} and Fagan, \{Lisa A.\} and McNeilly, \{Meghan S.\} and Rose Ruther and Fisher, \{L. Suzanne\} and Amonette, \{James E.\}",

year = "2007",

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doi = "10.1016/j.fuel.2006.11.018",

language = "English",

volume = "86",

pages = "1623--1630",

journal = "Fuel",

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T1 - Comparing metal leaching and toxicity from high pH, low pH, and high ammonia fly ash

AU - Palumbo, Anthony V.

AU - Tarver, Jana R.

AU - Fagan, Lisa A.

AU - McNeilly, Meghan S.

AU - Ruther, Rose

AU - Fisher, L. Suzanne

AU - Amonette, James E.

PY - 2007/7

Y1 - 2007/7

N2 - Previous work with both class F and class C fly ash indicated minimal leaching from most fly ashes tested. However, the addition of NOx removal equipment might result in higher levels of ammonia in the fly ash. We have recently been testing fly ash with a wide range of pH (3.7-12.4) originating from systems with NOx removal equipment. Leaching experiments were done using dilute CaCl2 solutions in batch and columns and a batch nitric acid method. All methods indicated that the leaching of heavy metals was different in the highest ammonia sample tested and the high pH sample. However, toxicity testing with the Microtox

AB - Previous work with both class F and class C fly ash indicated minimal leaching from most fly ashes tested. However, the addition of NOx removal equipment might result in higher levels of ammonia in the fly ash. We have recently been testing fly ash with a wide range of pH (3.7-12.4) originating from systems with NOx removal equipment. Leaching experiments were done using dilute CaCl2 solutions in batch and columns and a batch nitric acid method. All methods indicated that the leaching of heavy metals was different in the highest ammonia sample tested and the high pH sample. However, toxicity testing with the Microtox

KW - Carbon sequestration

KW - Fly ash

KW - Metals

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SN - 0016-2361

VL - 86

SP - 1623

EP - 1630

JO - Fuel

JF - Fuel

IS - 10-11

ER -

Comparing metal leaching and toxicity from high pH, low pH, and high ammonia fly ash

Abstract

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Keywords

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