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

Mihail Reinhold Wächter, Ioana Ionel, Daniel Dan and Adina Negrea
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Mihail Reinhold Wächter: Faculty of Mechanical Engineering, Polytehnic University Timişoara, Mihai Viteazu Blvd., No. 1, 300222 Timişoara, Romania
Ioana Ionel: Faculty of Mechanical Engineering, Polytehnic University Timişoara, Mihai Viteazu Blvd., No. 1, 300222 Timişoara, Romania
Daniel Dan: Faculty for Civil Engineering, Polytehnic University Timişoara, Traian Lalescu, No. 2, 300223 Timişoara, Romania
Adina Negrea: Faculty of Industrial Chemistry and Environmental Engineering, Polytehnic University Timişoara, Vasile Parvan Blvd., No. 6, 300223 Timişoara, Romania

Energies, 2021, vol. 14, issue 4, 1-10

Abstract: 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.

Keywords: incineration residues; heavy metal stabilization; cement substitute; energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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