THE POSSIBILITY OF SEPARATING AND UTILISING CHAR OBTAINED FROM FLY ASHES

Heavy metals in MSW incineration fly ashes

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:20030341 ◽

2003 ◽

Vol 107 ◽

pp. 463-466 ◽

Cited By ~ 6

Author(s):

C. Ferreira ◽

A. Ribeiro ◽

L. Ottosen

Keyword(s):

Heavy Metals ◽

Fly Ashes ◽

Msw Incineration

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COMBINED EFFECTS OF OXYGEN, CHLORINE AND WATER VAPOR ON THE VAPORIZATION OF HEAVY METALS DURING FLY ASHES VITRIFICATION BY PLASMA

High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes ◽

10.1615/hightempmatproc.v1.i4.30 ◽

1997 ◽

Vol 1 (4) ◽

pp. 441-448 ◽

Cited By ~ 1

Author(s):

J. M. Badie ◽

X. Chen ◽

Gilles Flamant ◽

D. Gauthier

Keyword(s):

Heavy Metals ◽

Water Vapor ◽

Combined Effects ◽

Fly Ashes

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Machine Learning Enables Rapid Screening of Reactive Fly Ashes Based on Their Network Topology

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.0c06978 ◽

2021 ◽

Vol 9 (7) ◽

pp. 2639-2650

Author(s):

Yu Song ◽

Kai Yang ◽

Jingyi Chen ◽

Kaixin Wang ◽

Gaurav Sant ◽

...

Keyword(s):

Machine Learning ◽

Network Topology ◽

Rapid Screening ◽

Fly Ashes

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Functional group characteristics and pyrolysis/combustion performance of fly ashes from Karamay oily sludge based on FT-IR and TG-DTG analyses

Fuel ◽

10.1016/j.fuel.2021.120669 ◽

2021 ◽

Vol 296 ◽

pp. 120669

Author(s):

Wenlong Mo ◽

Zifan Wu ◽

Xiaoqiang He ◽

Wenjie Qiang ◽

Bo Wei ◽

...

Keyword(s):

Functional Group ◽

Oily Sludge ◽

Fly Ashes ◽

Combustion Performance ◽

Ft Ir ◽

Group Characteristics

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Multi-Scale Minero-Chemical Analysis of Biomass Ashes: A Key to Evaluating Their Dangers vs. Benefits

Sustainability ◽

10.3390/su13116052 ◽

2021 ◽

Vol 13 (11) ◽

pp. 6052

Author(s):

Paola Comodi ◽

Azzurra Zucchini ◽

Umberto Susta ◽

Costanza Cambi ◽

Riccardo Vivani ◽

...

Keyword(s):

Raw Materials ◽

Average Diameter ◽

Rietveld Analysis ◽

Fly Ashes ◽

Amorphous Content ◽

Multi Scale ◽

Italian Law ◽

Polycyclic Aromatic ◽

Mineralogical Study ◽

The One

A multi-methodic analysis was performed on five samples of fly ashes coming from different biomasses. The aim of the study was to evaluate their possible re-use and their dangerousness to people and the environment. Optical granulometric analyses indicated that the average diameter of the studied fly ashes was around 20 µm, whereas only ~1 vol% had diameters lower that 2.5 µm. The chemical composition, investigated with electron probe microanalysis, indicated that all the samples had a composition in which Ca was prevalent, followed by Si and Al. Large contents of K and P were observed in some samples, whereas the amount of potentially toxic elements was always below the Italian law thresholds. Polycyclic aromatic hydrocarbons were completely absent in all the samples coming from combustion plants, whereas they were present in the fly ashes from the gasification center. Quantitative mineralogical content, determined by Rietveld analysis of X-ray powder diffraction data, indicated that all the samples had high amorphous content, likely enriched in Ca, and several K and P minerals, such as sylvite and apatite. The results obtained from the chemo-mineralogical study performed make it possible to point out that biomass fly ashes could be interesting materials (1) for amendments in clayey soils, as a substitution for lime, to stimulate pozzolanic reactions and improve their geotechnical properties, thus, on the one hand, avoiding the need to mine raw materials and, on the other hand, re-cycling waste; and (2) as agricultural fertilizers made by a new and ecological source of K and P.

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Novel Nickel- and Magnesium-Modified Cenospheres as Catalysts for Dry Reforming of Methane at Moderate Temperatures

Catalysts ◽

10.3390/catal9121066 ◽

2019 ◽

Vol 9 (12) ◽

pp. 1066 ◽

Cited By ~ 2

Author(s):

Bogdan Samojeden ◽

Marta Kamienowska ◽

Armando Izquierdo Colorado ◽

Maria Elena Galvez ◽

Ilona Kolebuk ◽

...

Keyword(s):

Supported Catalysts ◽

Temperature Programmed Desorption ◽

Catalytic Performance ◽

Dry Reforming ◽

Dry Reforming Of Methane ◽

Temperature Programmed Reduction ◽

Fly Ashes ◽

Coal Fly Ashes ◽

Temperature Programmed ◽

Mg Content

Cenospheres from coal fly ashes were used as support in the preparation of Ni–Mg catalysts for dry reforming of methane. These materials were characterized by means of XRD, H2-temperature-programmed reduction (H2-TPR), CO2-temperature-programmed desorption (CO2-TPD), and low-temperature nitrogen sorption techniques. The cenosphere-supported catalysts showed relatively high activity and good stability in the dry reforming of methane (DRM) at 700 °C. The catalytic performance of modified cenospheres was found to depend on both Ni and Mg content. The highest activity at 750 °C and 1 atm was observed for the catalyst containing 30 wt % Mg and 10, 20, and 30 wt % Ni, yielding to CO2 and CH4 conversions of around 95%.

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