scholarly journals Municipal solid waste incineration bottom ash: Physicochemical characterization of organic matter

Analusis ◽  
1999 ◽  
Vol 27 (1) ◽  
pp. 75-80 ◽  
Author(s):  
S. Dugenest ◽  
H. Casabianca ◽  
M. F. Grenier-Loustalot
Keyword(s):  
Organic Matter ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Physicochemical Characterization ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration

Effect of Composted Sewage Sludge on Metals Leaching Behavior in Municipal Solid Waste Incineration Bottom Ash

2013 ◽  
Vol 295-298 ◽  
pp. 418-421
Author(s):  
Hai Xia Zhang ◽  
Takayuki Shimaoka
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Mswi Bottom Ash ◽  
Composted Sewage Sludge

In order to study the effect of organic matter on the heavy metals leachability from municipal solid waste incineration (MSWI) bottom ash. In the project, the composted sewage sludge (CS) rich in organic matter was mixed with MSWI bottom ash in a certain proportion. e exudation test, determination of the leaching liquid pH, dissolved organic carbon and humus concentration, and the concentration of heavy metals. And the combination of CS and BA in organic compounds and metal content, calculate metal leaching rate. According to the experimental results, analysis of dissolved organic matter and humic acid concentrations and Cu and Cr leaching concentration, showed that when CS mixture ratio of 20%, organic matter and humic substances concentration and Cu and Cr leaching concentrations are highly linear correlation.

scholarly journals Municipal Solid Waste Incineration Bottom Ash as Sole Precursor in the Alkali-Activated Binder Formulation

2020 ◽  
Vol 10 (12) ◽  
pp. 4129
Author(s):  
Àlex Maldonado-Alameda ◽  
Jessica Giro-Paloma ◽  
Anna Alfocea-Roig ◽  
Joan Formosa ◽  
Josep Maria Chimenos
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Sodium Silicate ◽  
Bottom Ash ◽  
Physicochemical Characterization ◽  
Waste Incineration ◽  
Waste To Energy ◽  
Municipal Solid Waste Incineration ◽  
Alkali Activator ◽  
Alkali Activated

The concern about the large amount of weathered bottom ash (WBA) produced in waste-to-energy plants (WtE) has caused an increased search for alternatives to reduce their environmental impact. The present study aims to provide an added value through the WBA valorization from municipal solid waste incineration (MSWI) for its use as a sole precursor for developing alkali-activated binders (AABs). Alkali-activated weathered bottom ash binders (AA-WBA) were formulated with a liquid-to-solid ratio of 1.0 and using sodium silicate (80 wt.%) and NaOH (20 wt.%) at different concentrations (2, 4, 6, and 8M) as alkali-activator solutions. AA-WBA were cured at room temperature to extend their applicability. The effect of the alkali-activator solution molarity on the final properties of the AA-WBA was evaluated. The physicochemical characterization by XRD, FTIR, and SEM evidenced the presence of the typical phases (calcium silicate hydrate and gehlenite) of C-(A)-S-H gel. Leaching concentrations of As, Cu, and Mo exceed the acceptance in landfills for inert waste, while the leaching concentration of Sb exceeds the one for non-hazardous waste. The structure of the binders depends on the alkalinity of the activator, obtaining better results using NaOH 6M in terms of microstructure and compressive strength (6.7 MPa). The present study revealed that AA-WBA for non-structural purposes can be obtained. The AA-WBA formulation contributes to the WBA valorization and development of low-carbon cements; therefore, it is an encouraged alternative to ordinary Portland cement (OPC). Considering the amounts and costs of the WBA, sodium silicate, NaOH, and water, the total cost of the developed formulations is comprised in a range between 137.6 and 153.9 €/Tn.

Sign in / Sign up

Export Citation Format

Share Document