Mineralogical Evolution and Leaching Behaviour of a Heap of Bottom Ash as a Function of Time: Influence on Its Valorization

2018 ◽  
Vol 9 (12) ◽  
pp. 2517-2527 ◽  
Author(s):  
D. Blanc ◽  
L. Gonzalez ◽  
M. Lupsea-Toader ◽  
C. de Brauer
Keyword(s):  
Bottom Ash ◽  
Leaching Behaviour

Leaching behaviour of municipal solid waste incineration bottom ash: From granular material to monolithic concrete

2017 ◽  
Vol 35 (9) ◽  
pp. 978-990 ◽  
Author(s):  
Sabrina Sorlini ◽  
Maria Cristina Collivignarelli ◽  
Alessandro Abbà
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Bottom Ash ◽  
Waste Incineration ◽  
Municipal Solid Waste Incineration ◽  
Concrete Mixtures ◽  
Concrete Production ◽  
Critical Issues ◽  
Leaching Behaviour ◽  
Natural Aggregates

The aim of this work was to assess the leaching behaviour of the bottom ash derived from municipal solid waste incineration (MSWI) used in concrete production. In particular, the release of pollutants was evaluated by the application of different leaching tests, both on granular materials and monolithic samples (concrete mixtures cast with bottom ash). The results confirmed that, according to Italian regulations, unwashed bottom ashes present critical issues for the use as alternative aggregates in the construction sector due to the excessive release of pollutants; instead, the leachate from washed bottom ashes was similar to natural aggregates. The concentration of pollutants in the leachate from concrete mixtures was lower than regulation limits for reuse. The crushing process significantly influenced the release of pollutants: this behaviour was due both to the increase in surface area and the release of contaminants from cement. Moreover, the increase in contact time (up to 64 days) involved more heavy metals to be released.

Effect of short-term natural weathering on MSWI and wood waste bottom ash leaching behaviour

2011 ◽  
Vol 189 (1-2) ◽  
pp. 435-443 ◽  
Author(s):  
M. Gori ◽  
B. Bergfeldt ◽  
G. Pfrang-Stotz ◽  
J. Reichelt ◽  
P. Sirini
Keyword(s):  
Bottom Ash ◽  
Wood Waste ◽  
Natural Weathering ◽  
Short Term ◽  
Leaching Behaviour ◽  
Ash Leaching

Effect of leaching behaviour by quenching of bottom ash from MSW incineration

2010 ◽  
Vol 29 (10_suppl) ◽  
pp. S39-S47 ◽  
Author(s):  
Franco Marchese ◽  
Giuseppe Genon
Keyword(s):  
Bottom Ash ◽  
Msw Incineration ◽  
Leaching Behaviour

Analysis and interpretation of the leaching behaviour of waste thermal treatment bottom ash by batch and column tests

2016 ◽  
Vol 56 ◽  
pp. 216-228 ◽  
Author(s):  
Martina Di Gianfilippo ◽  
Giulia Costa ◽  
Iason Verginelli ◽  
Renato Gavasci ◽  
Francesco Lombardi
Keyword(s):  
Thermal Treatment ◽  
Bottom Ash ◽  
Column Tests ◽  
Leaching Behaviour

scholarly journals COMBUSTION AND LEACHING BEHAVIOR OF TRACE ELEMENTS IN LIGNITE AND COMBUSTION BY-PRODUCTS FROM THE MUĞLA BASIN, SW TURKEY

2017 ◽  
Vol 43 (5) ◽  
pp. 2218 ◽  
Author(s):  
M. Fotopoulou ◽  
G. Siavalas ◽  
H. İnaner ◽  
K. Katsanou ◽  
N. Lambrakis ◽  
...  
Keyword(s):  
Trace Elements ◽  
Environmental Impacts ◽  
Bottom Ash ◽  
Lignite Fly Ash ◽  
Sw Turkey ◽  
Hazardous Trace Elements ◽  
Mode Of Occurrence ◽  
Leaching Behaviour ◽  
Ph Conditions ◽  
Ash Disposal

The Muğla Basin is one of the most well-documented coal basins of Anatolia, SW Turkey. Previous studies mainly focused on coal geology, as well as on the environmental impacts from trace elements emitted into the atmosphere during coal combustion. However, the environmental impacts from coal utilization also include groundwater contamination from hazardous trace elements leached from exposed lignite stockpiles or ash disposal dumps. In the present study a comparative assessment of the combustion, as well as the leaching behaviour of trace elements from sixteen lignite, fly ash and bottom ash samples under various pH conditions is attempted. The samples were picked up from three regions in the Muğla Basin, namely, these of Yeniköy, Kemerköy and Yatağan. Proximate and ultimate analyses were performed on all samples. Quantitative mineralogical analysis was carried out using a Rietveld-based full pattern fitting technique. The elements Ag, As, B, Ba, Be, Co, Cr, Cu, Fe, Ga, Hf, Li, Mn, Mo, Ni, Pb, Sr, U, V and Zn were grouped according to their volatility during combustion and their leachability in the various types of samples. The pH of the leaching agent little affected the leaching trends of most elements and the mode of occurrence proved to be the major factor controlling primarily combustion and to a lesser extent leaching. The elements were classified into 7 classes with increasing environmental significance with Mo, Sr and V being the most potentially hazardous trace elements in the Muğla region.

Leaching behaviour of bottom ash from RDF high-temperature gasification plants

2011 ◽  
Vol 31 (7) ◽  
pp. 1514-1521 ◽  
Author(s):  
M. Gori ◽  
L. Pifferi ◽  
P. Sirini
Keyword(s):  
High Temperature ◽  
Bottom Ash ◽  
Leaching Behaviour

Leaching behaviour of incineration bottom ash in a reuse scenario: 12 years-field data vs. lab test results

2018 ◽  
Vol 73 ◽  
pp. 367-380 ◽  
Author(s):  
Martina Di Gianfilippo ◽  
Jiri Hyks ◽  
Iason Verginelli ◽  
Giulia Costa ◽  
Ole Hjelmar ◽  
...  
Keyword(s):  
Field Data ◽  
Bottom Ash ◽  
Test Results ◽  
Leaching Behaviour ◽  
Lab Test

Leaching Behaviour of a Glass Produced from a MSWI Bottom Ash

2006 ◽  
Vol 514-516 ◽  
pp. 1736-1741 ◽  
Author(s):  
Nuno Lapa ◽  
Rui Barbosa ◽  
Susana Camacho ◽  
Regina da Conceição Corredeira Monteiro ◽  
Maria Helena F.V. Fernandes ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Vibrio Fischeri ◽  
Bottom Ash ◽  
Glass Ceramics ◽  
Soda Lime ◽  
Modulus Of Rupture ◽  
Bending Test ◽  
Chemical Additives ◽  
Structural Applications ◽  
Leaching Behaviour

This paper is mainly focused on the characterisation of a glass material (GM) obtained from the thermal treatment of a bottom ash (BA) produced at the Municipal Solid Waste (MSW) incineration plant of Valorsul. By melting the BA at 1400°C during 2 hours, and without using any chemical additives, a homogeneous black-coloured glass was obtained. The thermal and mechanical properties of this glass were characterised. The thermal expansion coefficient, measured by dilatometry, was 9-10 x 10-6 per °C and the modulus of rupture, determined by four-point bending test, was 75±6 MPa, which are similar values to those exhibited by commercial soda-lime-silica glasses used in structural applications. The chemical and the ecotoxicological leaching behaviour of the GM were also analysed. The GM was submitted to a leaching procedure composed of 15 sequential extraction cycles. A liquid/solid (L/S) ratio of 2 l/kg was applied in each cycle. The leachates were filtered through a membrane of PTFE (porosity: 0.45 8m). The filtered leachates were characterised for different chemical parameters and for an ecotoxicological indicator (bacterium Vibrio fischeri). The GM was also submitted to a microwave acidic digestion for the assessment of the total metal content. The crude BA was also submitted to the same experimental procedures. The GM showed levels of chemical emission and ecotoxicity for V. fischeri much lower than those determined for the crude BA. Similar characterisation studies will be pursued with the glass-ceramics produced by adequate thermal treatment of the glass, in order to investigate the effect of the crystallization on the final properties.

scholarly journals Investigation on Leaching Behaviour of Fly Ash and Bottom Ash Replacement in Self-Compacting Concrete

2016 ◽  
Vol 133 ◽  
pp. 012036 ◽  
Author(s):  
Aeslina Abdul Kadir ◽  
Mohd Ikhmal Haqeem Hassan ◽  
Mohd Mustafa Al Bakri Abdullah
Keyword(s):  
Fly Ash ◽  
Bottom Ash ◽  
Self Compacting Concrete ◽  
Leaching Behaviour
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