scholarly journals EVALUATION OF THE ELEMENTAL COMPOSITION OF MUNICIPAL SOLID WASTE BOTTOM ASH: A NEW METHODOLOGY FOR SAMPLE PREPARATION

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Rodolfo Sbrolini Tiburcio ◽  
Andrea Carolina Gutierrez Gomez ◽  
Mauro Malpeli Junior ◽  
Ana Maria Pereira Neto
Keyword(s):  
Sample Preparation ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Elemental Composition ◽  
Energy Recovery ◽  
Scientific Literature ◽  
Bottom Ash ◽  
X Ray ◽  
Tetra Pak ◽  
Scanning Electron

The disposal of municipal solid waste (MSW) to thermochemical treatments promotes the formation of ashes as a by-product, which constitutes an important role in the design and operation of energy recovery plants, as the ash can cause corrosion and fouling problems. In this sense, this work analyzed samples of bottom ashes from combustible fractions (organic matter, plastics, textiles, paper/cardboard/Tetra Pak® and sanitary waste) of MSW in natura from Santo André – SP, Brazil. For this, a new methodology for sample preparation was proposed to evaluate the elemental composition of the bottom ashes, for later analysis by Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS). The obtained data showed a standard deviation of less than 10%, guaranteeing a greater reliability of the results and corroborating with standard deviations presented in the scientific literature. In addition, the elemental composition of the bottom ash was similar between the different combustible fractions evaluated. Keywords: MSW, Combustible fractions, SEM-EDS.

scholarly journals Preparation and Evaluation of Standard Bottom Ash of Municipal Solid Waste for Quantitation of Trace Elements by X-ray Fluorescence Spectrometry

2014 ◽  
Vol 63 (5) ◽  
pp. 421-430 ◽  
Author(s):  
Masato SATO ◽  
Yuya HIROKAWA ◽  
Yuki IWAHANA ◽  
Shintaro ICHIKAWA ◽  
Tetsuo INUI ◽  
...  
Keyword(s):  
Trace Elements ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Fluorescence Spectrometry ◽  
X Ray ◽  
Preparation And Evaluation

New fired bricks based on municipal solid waste incinerator bottom ash

2017 ◽  
Vol 35 (10) ◽  
pp. 1055-1063 ◽  
Author(s):  
R Taurino ◽  
E Karamanova ◽  
L Barbieri ◽  
S Atanasova-Vladimirova ◽  
F Andreola ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Mechanical Characteristics ◽  
Bottom Ash ◽  
Waste Incinerator ◽  
Municipal Solid Waste Incinerator ◽  
Sintering Process ◽  
X Ray ◽  
Fired Bricks ◽  
Solid Waste Incinerator

The main objective of this work was to study the sintering process and technological properties of new fired bricks based on high amount of post-treated municipal solid waste incinerator bottom ash and refractory clay. In addition, the effect of the minor addition of flux (Na2CO3) or reinforce (corundum) was also highlighted. Several methods were used to study the effect of compositions variations on the sintering process, structure and the mechanical characteristics of the test briquettes. Differential thermal analysis (TG/DTA) and dilatometry techniques were applied to study the thermal behaviour while scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy and high-temperature X-ray diffraction were used to elucidate the structure and the phase composition. The mechanical characteristics were estimated by micro-indentation, strength and various physical tests (porosity, linear shrinkage and water absorption, etc). The results highlight the possibility to use very high amount of municipal solid waste incinerator bottom ashes in the production of new fired bricks with good performances at all levels. It is also shown that the addition of additives managed the final properties, affecting the crystal phase formation, porosity and greatly the strength of the samples.

scholarly journals Utilization of Municipal Solid Waste Incineration Bottom Ash as Fine Aggregate of Cement Mortars

2021 ◽  
Vol 13 (16) ◽  
pp. 8832
Author(s):  
Byeong-Hun Woo ◽  
In-Kyu Jeon ◽  
Dong-Ho Yoo ◽  
Seong-Soo Kim ◽  
Jeong-Bae Lee ◽  
...  
Keyword(s):  
Solid Waste ◽  
Mercury Intrusion Porosimetry ◽  
Bottom Ash ◽  
Fine Aggregate ◽  
Cement Composites ◽  
Backscatter Electron ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mercury Intrusion ◽  
Scanning Electron

Incineration bottom ash is generated by the incineration of solid waste. Household solid waste is increasing every year and so is incineration bottom ash. This is a problem to treat the incineration bottom ash because the ash has many toxic components. Cement composites can solve this problem and there are many studies for using the bottom ash as fine aggregate. To evaluate the usage of incineration bottom ash, compressive strength, mercury intrusion porosimetry, scanning electron microscopy-backscatter electron, X-ray diffraction, and toxicity characteristic leaching processes were performed. When using incineration bottom ash up to 20% of substitution, the compressive strength in all cases was increased. This study showed how the filler effect appeared well in the cement composites through the scanning electron microscopy-backscatter electron, and mercury intrusion porosimetry. X-ray diffraction indicated the possibility of an alkali-silica reaction of the aggregate with the components of incineration bottom ash. This problem is an obstacle to applying the incineration bottom ash as a fine aggregate. In addition, the toxicity characteristic leaching process was shown to be under the threshold of the Korean standard, however, this should nuanced by the consideration of amorphity. Comprehensively, incineration bottom ash could be used as a fine aggregate of up to 20% of substitution. However, the pre-treatment would need to eliminate or reduce alkali reactive components and heavy metals.

The fate of heavy metals and salts during the wet treatment of municipal solid waste incineration bottom ash

2021 ◽  
Vol 121 ◽  
pp. 33-41
Author(s):  
Yanjun Hu ◽  
Lingqin Zhao ◽  
Yonghao Zhu ◽  
Bennong Zhang ◽  
Guixiang Hu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration
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