Research on treatment of zinc containing wastewater with fly ash zeolite

2015 ◽  
pp. 45-48
Keyword(s):  
Fly Ash ◽  
Fly Ash Zeolite

CeO 2 /Pd Nanoparticles Incorporated Fly Ash Zeolite: An Efficient and Recyclable Catalyst for C sp 2 ‐C sp 2 Bond Formation Reactions

2020 ◽  
Vol 34 (9) ◽  
Author(s):  
Seth Sheeba Thavamani ◽  
Murugesan Sudharsan ◽  
Anitha Santhana Mariya ◽  
Devarajan Suresh ◽  
Arlin Jose Amali ◽  
...  
Keyword(s):  
Fly Ash ◽  
Bond Formation ◽  
Pd Nanoparticles ◽  
Recyclable Catalyst ◽  
Fly Ash Zeolite ◽  
Bond Formation Reactions

Utilization of fly ash zeolite for boron removal from aqueous solution

2014 ◽  
Vol 54 (7) ◽  
pp. 1839-1849 ◽  
Author(s):  
Joanna Kluczka ◽  
Jolanta Trojanowska ◽  
Maria Zołotajkin
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Boron Removal ◽  
Fly Ash Zeolite

scholarly journals THE USE OF FLY ASH AND ZEOLITE MIXTURE AS BACKFILL MATERIAL IN THE RADIOACTIVE WASTE REPOSITORY

2010 ◽  
Vol 5 (3) ◽  
pp. 302-308
Author(s):  
Herry Poernomo ◽  
Noor Anis Kundari ◽  
Burhani J W
Keyword(s):  
Fly Ash ◽  
Radioactive Waste ◽  
Dispersion Coefficient ◽  
Nitrate Solution ◽  
Fixed Bed ◽  
Weight Ratio ◽  
Weight Percent ◽  
Backfill Material ◽  
Fly Ash Zeolite ◽  
Effective Dispersion

An investigation of the contribution of fly ash in the fly ash-zeolite mixture as the backfill material on the shallow land burial of radioactive waste has been done. The experiment objective is to know the effect of zeolite particle size and fly ash-zeolite weight ratio on physical properties such as permeability (K) and dispersion characteristic such as effective dispersion coefficient (De) in the fly ash-zeolite form as backfill material. The experiment was carried out by the fixed bed method in the column filled by the fly ash-zeolite mixture with a fly ash-to-zeolite weight percent ratio of 100/0, 80/20, 60/40, 40/60, 20/80, 0/100 in the water saturated condition flown by uranyl nitrate solution at concentration (Co) of 500 ppm. The concentration of uranium in the effluents in interval 15 minutes represented as Ct was analyzed by spectrophotometer, then using Co and Ct, data effective dispersion coefficient (De) in the backfill material were determined. The experiment data showed that -400 mesh fly ash and -70+80 mesh zeolite on fly ash-to-zeolite with weight percent ratio of 40/60 with K = 5.00x10-5cm/second and De = 1.11.10-5 cm2/second can be used as backfill material. Keywords: backfill material, fly ash, radioactive waste, zeolite

Encapsulated zerovalent iron/nickel-fly ash zeolite foam for treating industrial wastewater contaminated by heavy metals

2021 ◽  
Vol 22 ◽  
pp. 100577
Author(s):  
G.K.R. Angaru ◽  
L.P. Lingamdinne ◽  
Y.-L. Choi ◽  
J.R. Koduru ◽  
J.-K. Yang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Industrial Wastewater ◽  
Zerovalent Iron ◽  
Fly Ash Zeolite ◽  
Iron Nickel

scholarly journals Processing of high-grade zeolite nanocomposites from solid fuel combustion by-products as critical raw materials substitutes

2020 ◽  
Vol 7 ◽  
pp. 22
Author(s):  
Silviya Boycheva ◽  
Denitza Zgureva ◽  
Hristina Lazarova ◽  
Katerina Lazarova ◽  
Cyril Popov ◽  
...  
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Raw Materials ◽  
Coal Fly Ash ◽  
Thermal Power ◽  
Coal Ash ◽  
High Grade ◽  
Fly Ash Zeolite ◽  
By Products ◽  
Critical Raw Materials

High-grade zeolite nanocomposites are synthesized utilizing solid by-products from combustion of coal for energy production in Thermal Power Plants applying alkaline aging, hydrothermal and fusion-hydrothermal activation procedures. The obtained coal ash zeolites were studied with respect to their chemical and phase composition, morphology, surface parameters and thermal properties. It was found that they are distinguished in nanocrystalline morphology and significant content of iron oxide nanoparticles (γ-Fe2O3, α-Fe2O3, γ-Fe3O4) and doping elements (Cu, Co, Mn, V, W, etc.) transferred from the raw coal ash, and therefore they are assumed as nanocomposites. Coal fly ash zeolite nanocomposites are characterized by a mixed micro-mesoporous texture, significant concentration of acidic Brønsted centers due to their high surface insaturation, high chemical and thermal stabilty. This unique combination of compositional and textural properties predetermines the application of these materials as catalysts for thermal oxidation processes, anticorrosion barrier coatings, carbon capture adsorbents, matrices for hosting functional groups, detergents etc. Examples for coal fly ash zeolite applications for substitution of critical raw materials in practice are provided.

The influence of binders for the pelletization of fly ash zeolites on sulfur dioxide sorption properties

Clay Minerals ◽  
2020 ◽  
Vol 55 (1) ◽  
pp. 40-47 ◽  
Author(s):  
Natalia Czuma ◽  
Rafał Panek ◽  
Paweł Baran ◽  
Katarzyna Zarębska
Keyword(s):  
Fly Ash ◽  
Sulfur Dioxide ◽  
Sorption Capacity ◽  
Positive Influence ◽  
Sorption Properties ◽  
Technical Problems ◽  
Practical Applications ◽  
Fly Ash Zeolite ◽  
Pressure Diffusion ◽  
Mechanical Durability

AbstractFly ash zeolites are economically and ecologically attractive alternatives to synthetic and natural zeolites. Their use as sulfur dioxide sorbents is one of the possible applications of these materials. During the process of fly ash zeolite synthesis, a light powder is formed, which is not acceptable in practical applications due to technical problems, such as a marked drop in pressure, diffusion limits, hydraulic resistance, clogging in the packed beds and the possibility of losing a bed. It is therefore necessary to perform a pelletization process. Thickening of the material during pelletization influences sorption capacity negatively due to diffusing limitations, while the lack of an additional binder may result in a material of low mechanical durability. In this study, pressure pelletization experiments with fly ash zeolite were performed. Binders were selected on the basis of economic considerations as well as their potential to exert a positive influence on the sorption properties of the produced pellets. Cyclic sorption experiments were conducted (on sulfur dioxide) in which one zeolite powder sample was subjected to pelletization without a binder and another sample was subjected to the process with selected binders added. The results of the experiments were then analysed to ascertain the influence of the pelletization process on sulfur dioxide sorption capacity.

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