Recycling of Waste Coal Fly Ash: Synthesis of Zeolite-Like Minerals from Residue Yielded by Extraction of Aluminum Ions

2006 ◽  
Vol 510-511 ◽  
pp. 610-613
Author(s):  
M.S. Ryu ◽  
H.G. Sin ◽  
S.H. Park ◽  
Seog Young Yoon ◽  
Ron Stevens ◽  
...  
Keyword(s):  
Fly Ash ◽  
Hydrothermal Treatment ◽  
Coal Fly Ash ◽  
Aluminum Ions ◽  
Naoh Solution ◽  
Zeolitic Materials ◽  
Waste Coal

The conversion of residue, by extraction processing of aluminum ions from coal fly ash to zeolitic materials by hydrothermal treatment in the presence of NaOH solution, was investigated and the resulting material characterized.

scholarly journals Effect of Na2O/SiO2 mole ratio on the crystal type of zeolite synthesized from coal fly ash

2003 ◽  
Vol 68 (6) ◽  
pp. 471-478 ◽  
Author(s):  
Dusica Vucinic ◽  
Igor Miljanovic ◽  
Aleksandra Rosic ◽  
Predrag Lazic
Keyword(s):  
Fly Ash ◽  
Hydrothermal Treatment ◽  
Coal Fly Ash ◽  
Zeolite Synthesis ◽  
Crystal Type ◽  
Modified Fly Ash ◽  
Zeolitic Materials

Coal fly ash was modified to zeolitic materials by hydrothermal treatment at 90 ?C. The zeolite synthesis was studied as a function of the mole ratio of Na2O/SiO2 in the reaction mixtures. The results showed that NaP1 zeolite is obtained when the Na2O/SiO2 mole ratio was 0.7. Hydroxysodalite is the dominant zeolite phase in modified fly ash treated with a higher Na2O concentration solution (Na2O/SiO2 = 1.3). The IR and XRD methods were used to determine the phases present in the starting sample and in the zeolitic materials.

Mordenite‐Type Zeolite from Waste Coal Fly Ash: Synthesis, Characterization and Its Application as a Sorbent in Metal Ions Removal

2020 ◽  
Vol 5 (3) ◽  
pp. 1193-1198
Author(s):  
Henilkumar M. Lankapati ◽  
Dharmesh R. Lathiya ◽  
Lalita Choudhary ◽  
Ajay K. Dalai ◽  
Kalpana C. Maheria
Keyword(s):  
Fly Ash ◽  
Metal Ions ◽  
Coal Fly Ash ◽  
Type Zeolite ◽  
Waste Coal ◽  
Metal Ions Removal

Water Pollution Arising from Solid Waste (Coal, Fly Ash, Slag) Disposal, and Measures to Prevent Water Pollution

1983 ◽  
Vol 15 (11) ◽  
pp. 1-10 ◽  
Author(s):  
Dean M Golden
Keyword(s):  
Water Pollution ◽  
Fly Ash ◽  
Air Quality ◽  
Surface Waters ◽  
Environmental Effects ◽  
Large Volume ◽  
Coal Fly Ash ◽  
Disposal Site ◽  
Potential Interactions ◽  
Waste Coal

This paper reviews the pathways that large volume utility wastes can take which can cause environmental effects. Potential interactions of the environment with land-disposed utility wastes include: (1) effects on local air quality, (2) efforts on soils and vegetation, (3) phytotoxicity, (4) groundwater effeccts, (5) effects on surface waters, and (6) disposal site washout. Both natural and engineered mitigating mechanisms are reviewed.

Utilization of incineration fly ash from biomass power plants for zeolite synthesis from coal fly ash by microwave hydrothermal treatment

2018 ◽  
Vol 29 (3) ◽  
pp. 450-456 ◽  
Author(s):  
Tomonori Fukasawa ◽  
Akira Horigome ◽  
Achmad Dwitama Karisma ◽  
Norio Maeda ◽  
An-Ni Huang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Hydrothermal Treatment ◽  
Power Plants ◽  
Coal Fly Ash ◽  
Zeolite Synthesis ◽  
Microwave Hydrothermal ◽  
Biomass Power Plants

Synthesis of Zeolite Membranes from Coal Fly Ash

2011 ◽  
Vol 383-390 ◽  
pp. 1749-1752
Author(s):  
Shigeo Shirakura ◽  
Shukuhei Kojima ◽  
Kazuhiro Tanaka ◽  
Hidetoshi Kita
Keyword(s):  
Aqueous Solution ◽  
Fly Ash ◽  
Hydrothermal Treatment ◽  
Coal Fly Ash ◽  
Xrd Analysis ◽  
Organic Liquids ◽  
Zeolite Membranes ◽  
Sem Observation ◽  
Porous Supports ◽  
Optimized Conditions

Zeolite membranes were successfully synthesized from coal fly ash by hydrothermal treatment onto 10-cm-long tubular porous supports. The membranes were characterized from XRD analysis, SEM observation and the pervaporation performance. Under the optimized conditions, LTA-type membrane from coal fly ash showed fairly efficient for the dehydration of organic liquids. The maximum selectivity reached more than 3000 with accompanying flux as high as 3.0 kg/(m2•h) for separation of 90 wt% EtOH aqueous solution at 75 °C.

Resource recovery of waste incineration fly ash: Synthesis of tobermorite as ion exchanger

1999 ◽  
Vol 14 (11) ◽  
pp. 4437-4442 ◽  
Author(s):  
Zhidong Yao ◽  
Chikashi Tamura ◽  
Motohide Matsuda ◽  
Michihiro Miyake
Keyword(s):  
Fly Ash ◽  
Reaction Time ◽  
Sodium Hydroxide ◽  
Hydrothermal Treatment ◽  
Reaction Temperature ◽  
Sodium Hydroxide Solution ◽  
Waste Incineration ◽  
Naoh Solution ◽  
Temperature Time ◽  
Waste Incineration Fly Ash

Tobermorite was synthesized successfully from waste incineration fly ash by hydrothermal treatment in the presence of sodium hydroxide solution. The tobermorite synthesis was examined as a function of reaction temperature, time, and NaOH concentration. The formation of tobermorite was identified in all of the fly ash treated with NaOH at 180 °C, followed by the minor generations of sodalite and cancrinite phases with increasing NaOH concentration and extending reaction time. The NaOH-treated fly ash revealed the uptake behaviors for Cs+ and NH4+, whereas the fly ash untreated with NaOH solution did not show that. The uptake amounts of resulting products were also determined: 0.40 mmol/g for Cs+ and 0.35 mmol/g for NH4+ in the fly ash treated with 2.0 M NaOH at 180 °C for 20 h.

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