Prediction of Solid Waste Incineration Residues Quantity for Valorization in Lightweight Aggregates

2006 ◽  
Vol 514-516 ◽  
pp. 1731-1735 ◽  
Author(s):  
Margarida J. Quina ◽  
Marisa A. Almeida ◽  
Regina C. Santos ◽  
João C. Bordado ◽  
Rosa M. Quinta-Ferreira
Keyword(s):  
Solid Waste ◽  
Waste Incineration ◽  
Raw Material ◽  
Air Pollution Control ◽  
Lightweight Aggregates ◽  
Percentage Concentration ◽  
Incineration Residues ◽  
Eu Policies ◽  
Waste Characteristics ◽  
Apc Residues

The recycling of wastes is nowadays a priority in terms of the EU policies. This study aims at the replacement of a certain percentage of clay (natural raw material) by residues produced in a municipal solid waste incineration (MSWI) process referred as Air Pollution Control (APC) residues. The main objective of this work concerns the prediction of the quantity of the waste that can be valorized as lightweight aggregates (LWA). For this analysis the Riley diagram was considered, which consists in plotting the percentage concentration of the main oxides (SiO2, Al2O3, fluxing) in a ternary diagram. The fluxing is defined as the sum of Fe2O3+CaO+MgO+Na2O+K2O. Our results point out that no more than 5% of APC residues should be considered, since the main oxide composition of APC residues is far away from bloating area. A pre-washing treatment improved the waste characteristics being then possible to increase the amount of residue that can be incorporated in percentages below 10%. This theoretical analysis can save experimental work, since it allows the prediction of the maximum amount of wastes to be tested.

scholarly journals Investigation of Environmental Leaching Behavior of an Innovative Method for Landfilling of Waste Incineration Air Pollution Control Residues

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1025
Author(s):  
Mihail Reinhold Wächter ◽  
Ioana Ionel ◽  
Daniel Dan ◽  
Adina Negrea
Keyword(s):  
Air Pollution ◽  
Portland Cement ◽  
Pollution Control ◽  
Waste Incineration ◽  
Air Pollution Control ◽  
Leaching Behavior ◽  
Lignite Fly Ash ◽  
Incineration Residues ◽  
Apc Residues ◽  
Air Pollution Control Residues

Waste incineration air pollution control (APC) residues require pretreatment before landfilling because these types of residues encompass pollutants from an incineration gas stream. The environmental concerns of APC residues consist of a risk of leaching and subsequent release of potentially harmful substances that occur under environmental exposure. The stabilization/solidification (S/S) method of incineration residues is one of the most applied technologies for hazardous incineration residues. Portland cement is commonly used as a binder material in S/S for pollutant encapsulation, in order to change the hydrological characteristics of the landfilled material. Based on previous research, an innovative S/S method for APC residues is investigated, meant to replace Portland cement with cement-like material made from lignite fly ash (FA). To do this, a lab-scale landfill was created through the promoted S/S method and exposed to the environment for 12 months. Thus, this article assesses the lab-scale leaching behavior of a landfill disposal material exposed to environmental conditions and attempts to prove the promoted innovative S/S method. The results show that the replacement of Portland cement with a substitute material for utilization in the S/S method can mitigate energy consumption in the industrial cement subsector.

scholarly journals Compatibility analysis of municipal solid waste incineration residues and clay for producing lightweight aggregates

2014 ◽  
Vol 102 ◽  
pp. 71-80 ◽  
Author(s):  
Margarida J. Quina ◽  
Marisa A. Almeida ◽  
Regina Santos ◽  
João M. Bordado ◽  
Rosa M. Quinta-Ferreira
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Lightweight Aggregates ◽  
Municipal Solid Waste Incineration ◽  
Compatibility Analysis ◽  
Incineration Residues

A mini-review of heavy metal recycling technologies for municipal solid waste incineration fly ash

2021 ◽  
pp. 0734242X2110039
Author(s):  
Huan Wang ◽  
Fenfen Zhu ◽  
Xiaoyan Liu ◽  
Meiling Han ◽  
Rongyan Zhang
Keyword(s):  
Fly Ash ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Electrochemical Process ◽  
Chemical Extraction ◽  
Air Pollution Control ◽  
Municipal Solid Waste Incineration ◽  
Mswi Fly Ash ◽  
Metal Recycling

This mini-review article summarizes the available technologies for the recycling of heavy metals (HMs) in municipal solid waste incineration (MSWI) fly ash (FA). Recovery technologies included thermal separation (TS), chemical extraction (CE), bioleaching, and electrochemical processes. The reaction conditions of various methods, the efficiency of recovering HMs from MSWI FA and the difficulties and solutions in the process of technical development were studied. Evaluation of each process has also been done to determine the best HM recycling method and future challenges. Results showed that while bioleaching had minimal environmental impact, the process was time-consuming. TS and CE were the most mature technologies, but the former process was not cost-effective. Overall, it has the greatest economic potential to recover metals by CE with scrubber liquid produced by a wet air pollution control system. An electrochemical process or solvent extraction could then be applied to recover HMs from the enriched leachate. Ongoing development of TS and bioleaching technologies could reduce the treatment cost or time.

Comparison of trace element mobility from MSWI ash before and after plasma vitrification

2021 ◽  
pp. 0734242X2110115
Author(s):  
Wesley N Oehmig ◽  
Justin Roessler ◽  
Abdul Mulla Saleh ◽  
Kyle A Clavier ◽  
Christopher C Ferraro ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Waste To Energy ◽  
Air Pollution Control ◽  
Plasma Arc ◽  
Municipal Solid Waste Incineration ◽  
Trace Element Mobility ◽  
Before And After ◽  
Air Pollution Control Residues

A common perception of plasma arc treatment systems for municipal solid waste incineration ash is that the resulting vitrified slag is inert from an environmental perspective. Research was conducted to examine this hypothesis and to assess whether reduced pollutant release results from pollutant depletion during the process of the ash with plasma, or encapsulation in the glassy vitrified matrix. The concentrations of four discrete municipal solid waste incineration ash samples before and after plasma arc vitrification in a bench-scale unit were compared. Slag and untreated ash samples were leached using several standardized approaches and mobility among the four metals of interest (e.g. As, Cd, Pb and Sb) varied across samples, but was generally high (as high as 100% for Cd). Comparison across methods did not indicate substantial encapsulation in the vitrified slag, which suggests that reduced pollutant release from plasma arc vitrified slag is due to pollutant depletion by volatilization, not encapsulation. This has significant implications for the management of air pollution control residues from waste-to-energy facilities using plasma arc vitrification.

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