Sintering Behaviors of Coal Fly Ash and NiCr-Based Alloy Mixture Powder Stacked Layer by Layer

In order to address the problem with titania distribution and recovery, series of Ti0.91O2/CFA photocatalysts (Ti0.91O2/CFA-n,n=2,4,6,and8) were fabricated by assembling Ti0.91O2nanosheets on coal fly ash (CFA) microspheres via the layer-by-layer assembly (LBLA) process and characterized by scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), N2-sorption, and ultraviolet-visible absorption (UV-vis) techniques. The SEM images and UV-vis spectra illustrated that Ti0.91O2nanosheets were immobilized successfully on the CFA by the LBLA approach and changed the characteristics of CFA noticeably. The photocatalytic activity of Ti0.91O2/CFA was evaluated by the photodegradation of methylene blue (MB) under UV irradiation. The results demonstrated that Ti0.91O2/CFA-6 showed the best photocatalytic activity among the series of Ti0.91O2/CFA irradiated for 60 min, with a decoloration rate above 43%. After photocatalysis, the Ti0.91O2/CFA could be easily separated and recycled from aqueous solution and Ti0.91O2nanosheets were still anchored on the CFA.

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Converting waste into worth: Fe1.72Al0.28O3 nanoflakes harvesting from brown coal fly ash with crystal defects for enhanced water remediation

10.1021/scimeetings.0c01035 ◽

2020 ◽

Author(s):

BINBIN QIAN ◽

Cheng Liu ◽

Lian Zhang

Keyword(s):

Fly Ash ◽

Brown Coal ◽

Coal Fly Ash ◽

Crystal Defects ◽

Water Remediation

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SCANNING ELECTRON MICROSCOPY AND ENERGY-DISPERSIVE X-RAY SPECTROSCOPY OF LOW-SULFUR COAL FLY ASH

International Journal of Energy for a Clean Environment ◽

10.1615/interjenercleanenv.2011001526 ◽

2009 ◽

Vol 10 (1-4) ◽

pp. 147-166 ◽

Cited By ~ 10

Author(s):

Bruno Valentim ◽

James C. Hower ◽

Alexandra Guedes ◽

Deolinda Flores

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Fly Ash ◽

Coal Fly Ash ◽

Energy Dispersive ◽

X Ray ◽

Low Sulfur ◽

Scanning Electron

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UTILIZATION OF COAL FLY ASH FROM POWER PLANTS - I. ASH CHARACTERIZATION

Environmental Engineering and Management Journal ◽

10.30638/eemj.2008.037 ◽

2008 ◽

Vol 7 (3) ◽

pp. 289-293 ◽

Cited By ~ 13

Author(s):

Maria Harja ◽

Marinela Barbuta ◽

Lacramioara Rusu ◽

Nicolae Apostolescu

Keyword(s):

Fly Ash ◽

Power Plants ◽

Coal Fly Ash

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Characterization of a Coal Fly Ash-Cement Slurry by the Absolute Foam Index

10.37099/mtu.dc.etds/493 ◽

2013 ◽

Author(s):

Melanie Kueber Watkins

Keyword(s):

Fly Ash ◽

Coal Fly Ash ◽

Cement Slurry ◽

The Absolute ◽

Foam Index

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Coal Fly Ash and Polyacrylamide Influence Transport and Redistribution of Soil Nitrogen in a Sandy Sloping Land

Agriculture ◽

10.3390/agriculture11010047 ◽

2021 ◽

Vol 11 (1) ◽

pp. 47

Author(s):

Kai Yang ◽

Zejun Tang ◽

Jianzhang Feng

Keyword(s):

Fly Ash ◽

Sandy Soil ◽

Coal Fly Ash ◽

Soil Layer ◽

Nutrient Retention ◽

Soil Surface ◽

Rainfall Event ◽

N Losses ◽

N Concentration ◽

Application Rates

Sandy soils are prone to nutrient losses, and consequently do not have as much as agricultural productivity as other soils. In this study, coal fly ash (CFA) and anionic polyacrylamide (PAM) granules were used as a sandy soil amendment. The two additives were incorporated to the sandy soil layer (depth of 0.2 m, slope gradient of 10°) at three CFA dosages and two PAM dosages. Urea was applied uniformly onto the low-nitrogen (N) soil surface prior to the simulated rainfall experiment (rainfall intensity of 1.5 mm/min). The results showed that compared with no addition of CFA and PAM, the addition of CFA and/or PAM caused some increases in the cumulative NO3−-N and NH4+-N losses with surface runoff; when the rainfall event ended, 15% CFA alone treatment and 0.01–0.02% PAM alone treatment resulted in small but significant increases in the cumulative runoff-associated NO3−-N concentration (p < 0.05), meanwhile 10% CFA + 0.01% PAM treatment and 15% CFA alone treatment resulted in nonsignificant small increases in the cumulative runoff-associated NH4+-N concentration (p > 0.05). After the rainfall event, both CFA and PAM alone treatments increased the concentrations of NO3−-N and NH4+-N retained in the sandy soil layer compared with the unamended soil. As the CFA and PAM co-application rates increased, the additive effect of CFA and PAM on improving the nutrient retention of sandy soil increased.

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