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Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1712-2

Abstract:

● Both amorphous and crystalline silicon are completely separated from coalfly ash.

Keywords： Coal fly ash     Alkali fusion     Micro-/meso-porous Si     Zeolite MCM-48     Crystalline transformation    

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Physical and mechanical properties of municipal solid waste incineration residues with cement and coalfly ash using X-ray Computed Tomography scanners

Toshifumi MUKUNOKI, Ta Thi HOAI, Daisuke FUKUSHIMA, Teppei KOMIYA, Takayuki SHIMAOKA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 640-652 doi: 10.1007/s11709-018-0502-6

Abstract: A significant volume of Municipal Solid Waste incineration bottom ash and fly ash (i.e., incinerationThis research examines quantitative influences of using the combination of cement and coal fly ash atIt was shown that incineration residues solidified by cement and coal fly ash showed an increase in compressionstrength and deformation modulus with curing time and coal fly ash content.ash as well as cement and coal fly ash have the deliquescent materials.

Keywords： mechanical property     municipal solid waste incineration residues     coal fly ash     unconfined compression test    

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Synthesis of zeolite Na-P1 from coal fly ash produced by gasification and its application as adsorbent

Yixin Zhang, Lu Zhou, Liqing Chen, Yang Guo, Fanhui Guo, Jianjun Wu, Baiqian Dai

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 518-527 doi: 10.1007/s11705-020-1926-9

Abstract: The coal fly ash produced by gasification is estimated to be over 80 million ton per year in China byIn this paper, the coal fly ash produced by gasification was at first analyzed and then applied to synthesize

Keywords： coal fly ash     gasification     zeolite     Na-P1     chromium(VI)    

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Use of zeolitized coal fly ash in the simultaneous removal of ammonium and phosphate from aqueous solution

WU Deyi, HU Zhanbo, WANG Xinze, HE Shengbing, KONG Hainan

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 213-220 doi: 10.1007/s11783-007-0037-x

Abstract: In this study, a low calcium fly ash and high calcium fly ash were converted into zeolite using the hydrothermalThe results showed that zeolitized fly ash could efficiently eliminate ammonium and phosphate at the
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Effect of seawater salinity on the synthesis of zeolite from coal fly ash

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 54-61 doi: 10.1007/s11783-013-0493-4

Abstract: The synthesis was carried out by hydrothermal activation after alkali fusion and coal fly ash (CFA) was

Keywords： coal fly ash (CFA)     seawater salinity     zeolite synthesis    

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Pyrolysis of WEEE plastics using catalysts produced from fly ash of coal gasification

Marika Benedetti, Lorenzo Cafiero, Doina De Angelis, Alessandro Dell’Era, Mauro Pasquali, Stefano Stendardo, Riccardo Tuffi, Stefano Vecchio Ciprioti

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0998-3

Abstract: ash-derived catalysts.The catalysts were prepared from fly ash by a simple method that basically includes a mechanical treatmentThe results showed that not treated fly ash (FA) is characterized by good crystallinity, which in turnis lowered by mechanical and chemical treatment (fly ash after mechanical and acid activation, FAMA)and suppressed almost entirely down to let fly ash become completely amorphous (fly ash after mechanical

Keywords： Waste electrical and electronic equipment (WEEE) plastic mixture     Pyrolysis     Catalyst     Fly ash     Oil    

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Mercury emission and adsorption characteristics of fly ash in PC and CFB boilers

Li JIA, Baoguo FAN, Xianrong ZHENG, Xiaolei QIAO, Yuxing YAO, Rui ZHAO, Jinrong GUO, Yan JIN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 112-123 doi: 10.1007/s11708-020-0682-3

Abstract: The relationship was obtained between the mercury emission and adsorption characteristics of fly ash.The parameters included unburned carbon content, particle size, and pore structure of fly ash.It was also found that the mercury content of fly ash in the CFB boiler was ten times higher than thatThe capacity of adsorbing mercury by fly ash was directly related to the particle size.The content of mesoporous (4–6 nm) of the fly ash in the particle size of 77.5–106 µm was the highest

Keywords： mercury     combustion modes     coal property     fly ash     particle size    

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Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverizedcoal combustion

Siqi LIU, Yanqing NIU, Liping WEN, Yang LIANG, Bokang YAN, Denghui WANG, Shi’en HUI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 91-98 doi: 10.1007/s11708-020-0806-9

Abstract: In pulverized coal particle combustion, part of the ash forms the ash film and exerts an inhibitory influencethe fraction determination, being aware that the formation of cenospheres is based on the model of coalThe fraction of ash film is the ratio of the measuring mass of ash film and the total ash in coal particleIn this paper, the Huangling bituminous coal with different sizes was burnt in a drop-tube furnace atratio but decreases with larger sizes of coal particles.

Keywords： ash film fraction     cenospheres     coal combustion     fly ash    

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Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1728-7

Abstract:

● A higher sulfur content reduced the curing rate of Cr in glass.

Keywords： Dechlorinated fly ash     SO3     Heavy metal     Chemical speciation     Glass solidification    

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Service life prediction of fly ash concrete using an artificial neural network

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 793-805 doi: 10.1007/s11709-021-0717-9

Abstract: For this purpose, the present work estimates the lifetime of fly ash concrete by developing a carbonationSix parameters affecting carbonation were used as input neurons: binder content, fly ash substitutionneural network has strong potential as a feasible tool to accurately predict the carbonation depth of flyash concrete.ash concrete.

Keywords： concrete     fly ash     carbonation     neural networks     experimental validation     service life    

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Direct synthesis of carbon nanotubes on fly ash particles to produce carbon nanotubes/fly ash composites

Fangxian LI, Cheng ZHOU, Pengfei YANG, Beihan WANG, Jie HU, Jiangxiong WEI, Qijun YU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1405-1414 doi: 10.1007/s11709-019-0564-0

Abstract: Fly ash was used as catalytic support for carbon nanotubes (CNTs) growth by chemical vapor depositionIn this paper, CNTs were synthesized on Ni catalyst/fly ash substrate using CVD method.acetylene and hydrogen flow rate would decrease in defect density and increase in yield of as-grown CNTs on flyash.

Keywords： carbon nanotubes     fly ash     chemical vapor deposition     parameters     purification    

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Effect of fly ash replacement level on the fracture behavior of concrete

Mahdi AREZOUMANDI, Jeffery S. VOLZ

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 411-418 doi: 10.1007/s11709-013-0228-4

Abstract: One method of reducing concrete’s contribution to greenhouse gas emissions is the use of fly ash to replaceThis study presents the results of an experimental investigation that evaluates effect of fly ash replacementThis study includes four mixes with 0%, 30%, 50%, and 70% fly ash as a cement replacement.Results of these statistical tests show that the mix with higher level of fly ash replacement level has

Keywords： concrete     fracture energy     fly ash    

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Accelerated engineering properties of high and low volume fly ash concretes reinforced with glued steel

Vallarasu Manoharan SOUNTHARARAJAN, Dr. Anandan SIVAKUMAR

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 429-445 doi: 10.1007/s11709-013-0226-6

Abstract: The present study focuses on the improvement of pozzolanic reaction of fly ash particles with the cementLow and high volume fly ash concrete mixtures were studied systematically with the addition of acceleratingAlso, it can be noted that the high volume fly ash (50%) addition in concrete showed a reduction in strengthA maximum increase (41.7%) in compressive strength of fly ash concrete around 52.90 MPa was noticed for25% fly ash substitution and 1.5% steel fibers addition.

Keywords： fly ash     pozzolanic index     steam curing     superplasticizer     accelerator     steel fibres     elastic modulus    

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Effects of seeding nucleation agent on geopolymerization process of fly-ash geopolymer

Lapyote PRASITTISOPIN, Issara SEREEWATTHANAWUT

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 16-25 doi: 10.1007/s11709-016-0373-7

Abstract: viability to substitute traditional concrete made of portland cement (PC) because replacing PC with flyash leads to reduced carbon dioxide emissions from cement productions and reduced materials cost.Although fly ash geopolymer stimulates sustainability, it is slow geopolymerization reaction poses aThe purpose of this study is to evaluate seeding nucleation agents (NA) of fly ash geopolymer that canash geopolymer product.

Keywords： fly ash     geopolymer     nucleation agent     portland cement replacement    

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Fresh and hardened properties of high-performance fiber-reinforced concrete containing fly ash and ricehusk ash: Influence of fiber type and content

Nguyen-Trong HO; Viet Quoc DANG; Minh-Hieu NGUYEN; Chao-Lung HWANG; Trong-Phuoc HUYNH

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1621-1632 doi: 10.1007/s11709-022-0884-3

Abstract: high-performance fiber-reinforced concrete (HPFRC) designed using a novel densified mixture design algorithm with flyash and rice husk ash.

Keywords： high-performance fiber-reinforced concrete     fly ash     rice husk ash     durability     mechanical strength    

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Title Author Date Type Operation

Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Journal Article

Physical and mechanical properties of municipal solid waste incineration residues with cement and coalfly ash using X-ray Computed Tomography scanners

Toshifumi MUKUNOKI, Ta Thi HOAI, Daisuke FUKUSHIMA, Teppei KOMIYA, Takayuki SHIMAOKA

Journal Article

Synthesis of zeolite Na-P1 from coal fly ash produced by gasification and its application as adsorbent

Yixin Zhang, Lu Zhou, Liqing Chen, Yang Guo, Fanhui Guo, Jianjun Wu, Baiqian Dai

Journal Article

Use of zeolitized coal fly ash in the simultaneous removal of ammonium and phosphate from aqueous solution

WU Deyi, HU Zhanbo, WANG Xinze, HE Shengbing, KONG Hainan

Journal Article

Effect of seawater salinity on the synthesis of zeolite from coal fly ash

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

Journal Article

Pyrolysis of WEEE plastics using catalysts produced from fly ash of coal gasification

Marika Benedetti, Lorenzo Cafiero, Doina De Angelis, Alessandro Dell’Era, Mauro Pasquali, Stefano Stendardo, Riccardo Tuffi, Stefano Vecchio Ciprioti

Journal Article

Mercury emission and adsorption characteristics of fly ash in PC and CFB boilers

Li JIA, Baoguo FAN, Xianrong ZHENG, Xiaolei QIAO, Yuxing YAO, Rui ZHAO, Jinrong GUO, Yan JIN

Journal Article

Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverizedcoal combustion

Siqi LIU, Yanqing NIU, Liping WEN, Yang LIANG, Bokang YAN, Denghui WANG, Shi’en HUI

Journal Article

Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Journal Article

Service life prediction of fly ash concrete using an artificial neural network

Journal Article

Direct synthesis of carbon nanotubes on fly ash particles to produce carbon nanotubes/fly ash composites

Fangxian LI, Cheng ZHOU, Pengfei YANG, Beihan WANG, Jie HU, Jiangxiong WEI, Qijun YU

Journal Article

Effect of fly ash replacement level on the fracture behavior of concrete

Mahdi AREZOUMANDI, Jeffery S. VOLZ

Journal Article

Accelerated engineering properties of high and low volume fly ash concretes reinforced with glued steel

Vallarasu Manoharan SOUNTHARARAJAN, Dr. Anandan SIVAKUMAR

Journal Article

Effects of seeding nucleation agent on geopolymerization process of fly-ash geopolymer

Lapyote PRASITTISOPIN, Issara SEREEWATTHANAWUT

Journal Article

Fresh and hardened properties of high-performance fiber-reinforced concrete containing fly ash and ricehusk ash: Influence of fiber type and content

Nguyen-Trong HO; Viet Quoc DANG; Minh-Hieu NGUYEN; Chao-Lung HWANG; Trong-Phuoc HUYNH

Journal Article