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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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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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Experiments on the effect of the pressure on the mineral transformation of coal ash under the different

Nijie JING, Qinhui WANG, Zhongyang LUO, Tao JIE, Xiaomin LI, Kefa CEN

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 394-399 doi: 10.1007/s11705-010-0505-x

Abstract: This paper investigated the effect of the pressures, reaction atmospheres and coal ash species on theThe different reaction atmospheres have different effects on the formation of coal ash minerals.Under the N atmosphere, the present microcline may decrease the melting temperature of coal ash.And later, it transforms into sanidine at high pressure; thus, the melting temperature of coal ash mayThe coal ash abundance in basic oxides or higher SiO , Fe O , K O and Na O has lower melting temperature

Keywords： ash fusibility     XRD analysis     PTGA     low-temperature eutectic    

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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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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.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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A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 46-67 doi: 10.1007/s11708-020-0807-8

Abstract: Gasification or combustion of coal and biomass is the most important form of power generation today.However, the use of coal/biomass at high temperatures has an inherent problem related to the ash generatedThe formation of ash leads to a problematic phenomenon called slagging.Slagging is the accumulation of molten ash on the walls of the furnace, gasifier, or boiler and is detrimentalTo improve the gasifier/combustor facility, it is very important to understand the key ash properties

Keywords： slag     viscosity     biomass     low-rank coal     combustion     gasification    

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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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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: extracted from waste electrical and electronic equipment (WEEE) was investigated using various fly ash-derivedThe 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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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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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: emission was obtained by measuring the mercury contents in flue gas and solid samples in pulverized coalThe parameters included unburned carbon content, particle size, and pore structure of fly ash.The coal factor was proposed to characterize the impact of coal property on mercury emissions in thisAs the coal factor increased, the mercury emission to the atmosphere decreased.The capacity of adsorbing mercury by fly ash was directly related to the particle size.

Keywords： mercury     combustion modes     coal property     fly ash     particle size    

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Forward osmosis coupled with lime-soda ash softening for volume minimization of reverse osmosisconcentrate and CaCO3 recovery: A case study on the coal

Jiandong Lu, Shijie You, Xiuheng Wang

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1301-6

Abstract: chemical softening for CCI ROC minimization • Effective removal of scale precursor ions by lime-soda ashThe RO concentrate (ROC) produced from the coal chemical industry (CCI) generally contains refractoryIn the case of the real raw CCI ROC, softening treatment by lime-soda ash was shown to effectively remove

Keywords： Coal chemical industry     Forward osmosis     Chemical softening     Reverse osmosis concentrate    

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Effect of fineness of ash on pozzolanic properties and acid resistance of sugarcane bagasse ash replaced

Shan E ALI; Rizwan AZAM; Muhammad Rizwan RIAZ; Mohamed ZAWAM

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1287-1300 doi: 10.1007/s11709-022-0872-7

Abstract: This paper addresses the potential use of Sugar Cane Bagasse Ash (SCBA) as a pozzolanic material for

Keywords： durability     cement replacement     sugarcane bagasse ash     fineness of ash     pozzolanic properties     mortar    

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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: fiber-reinforced concrete (HPFRC) designed using a novel densified mixture design algorithm with fly ashand rice husk ash.

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

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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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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.and hydrogen flow rate would decrease in defect density and increase in yield of as-grown CNTs on fly ash

Keywords： carbon nanotubes     fly ash     chemical vapor deposition     parameters     purification    

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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

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

Experiments on the effect of the pressure on the mineral transformation of coal ash under the different

Nijie JING, Qinhui WANG, Zhongyang LUO, Tao JIE, Xiaomin LI, Kefa CEN

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

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

A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

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

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

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

Yanqing YU, Xiaoliang LI, Xiaolan ZOU, Xiaobin ZHU

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

Forward osmosis coupled with lime-soda ash softening for volume minimization of reverse osmosisconcentrate and CaCO3 recovery: A case study on the coal

Jiandong Lu, Shijie You, Xiuheng Wang

Journal Article

Effect of fineness of ash on pozzolanic properties and acid resistance of sugarcane bagasse ash replaced

Shan E ALI; Rizwan AZAM; Muhammad Rizwan RIAZ; Mohamed ZAWAM

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

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

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