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Title: Design and scale-up of a heavy-metals recovery process from municipal-solid-waste-incinerator residues

Abstract

Bottom ash, fly ash or fly ash and scrubber residue, and combined ash was obtained from three facilities and characterized for chemical composition and buffering capacities. Equilibrium extractions utilizing an acidic, inorganic salt solution investigated the leaching dependency on pH and provided insight to the structure of the ash. Sequential batch extractions were carried out to increase metallic and salt species concentrations by adding ash to recycled extract and to observe the solubility limitations and interaction of these species upon full recycle of an extract stream. A model was derived for the lead extraction dependency on equilibrium pH for three fly ash residuals. The extraction patterns were compared to the solubilization and chloride complexation of several complex lead minerals. The empirical rate of neutralization was also determined. Bottom and combined ash studies were carried out to evaluate separation and subsequent treatment processes. Another alternative process, soluble salts recovery from fly ash or fly ash and scrubber residue, also was investigated. A continuous laboratory scale pilot plant was designed and operated to treat ashes at a rate of 1 kilogram/hour. The pilot plant was operated in a single pass mode and the residence time distribution of the reactor was evaluated. Amore » secondary investigation observed the effect of recycle streams on the extraction efficiency. Three conceptual processes were designed for heavy metals recovery from combustion residuals, separation and subsequent treatment of bottom or combined ash, and the soluble salts recovery from fly ash or fly ash scrubber residuals at the pilot scale of 20 tons per day. The primary economic analysis of all three processes are presented.« less

Authors:
Publication Date:
Research Org.:
Rutgers-the State Univ., New Brunswick, NJ (United States)
OSTI Identifier:
5093652
Resource Type:
Miscellaneous
Resource Relation:
Other Information: Thesis (Ph.D.)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 29 ENERGY PLANNING, POLICY AND ECONOMY; FLY ASH; CHEMICAL COMPOSITION; LEAD; MATERIALS RECOVERY; MUNICIPAL WASTES; COMBUSTION; WASTE PROCESSING PLANTS; DESIGN; ECONOMIC ANALYSIS; INCINERATORS; PILOT PLANTS; RECYCLING; SOLID WASTES; AEROSOL WASTES; ASHES; CHEMICAL REACTIONS; COMBUSTION PRODUCTS; ECONOMICS; ELEMENTS; FUNCTIONAL MODELS; INDUSTRIAL PLANTS; MANAGEMENT; METALS; OXIDATION; PROCESSING; RESIDUES; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-); 320305 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management; 290300 - Energy Planning & Policy- Environment, Health, & Safety

Citation Formats

Legiec, I A. Design and scale-up of a heavy-metals recovery process from municipal-solid-waste-incinerator residues. United States: N. p., 1991. Web.
Legiec, I A. Design and scale-up of a heavy-metals recovery process from municipal-solid-waste-incinerator residues. United States.
Legiec, I A. 1991. "Design and scale-up of a heavy-metals recovery process from municipal-solid-waste-incinerator residues". United States.
@article{osti_5093652,
title = {Design and scale-up of a heavy-metals recovery process from municipal-solid-waste-incinerator residues},
author = {Legiec, I A},
abstractNote = {Bottom ash, fly ash or fly ash and scrubber residue, and combined ash was obtained from three facilities and characterized for chemical composition and buffering capacities. Equilibrium extractions utilizing an acidic, inorganic salt solution investigated the leaching dependency on pH and provided insight to the structure of the ash. Sequential batch extractions were carried out to increase metallic and salt species concentrations by adding ash to recycled extract and to observe the solubility limitations and interaction of these species upon full recycle of an extract stream. A model was derived for the lead extraction dependency on equilibrium pH for three fly ash residuals. The extraction patterns were compared to the solubilization and chloride complexation of several complex lead minerals. The empirical rate of neutralization was also determined. Bottom and combined ash studies were carried out to evaluate separation and subsequent treatment processes. Another alternative process, soluble salts recovery from fly ash or fly ash and scrubber residue, also was investigated. A continuous laboratory scale pilot plant was designed and operated to treat ashes at a rate of 1 kilogram/hour. The pilot plant was operated in a single pass mode and the residence time distribution of the reactor was evaluated. A secondary investigation observed the effect of recycle streams on the extraction efficiency. Three conceptual processes were designed for heavy metals recovery from combustion residuals, separation and subsequent treatment of bottom or combined ash, and the soluble salts recovery from fly ash or fly ash scrubber residuals at the pilot scale of 20 tons per day. The primary economic analysis of all three processes are presented.},
doi = {},
url = {https://www.osti.gov/biblio/5093652}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}

Miscellaneous:
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