Geopolymeric adsorbents from fly ash for dye removal from aqueous solution

Lin, Lijin; Wang, Shaobin; Zhu, Zhonghua

doi:10.1016/j.jcis.2006.03.062

Cited by 253 publications

(146 citation statements)

References 28 publications

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“…The adsorption capacity of the adsorbents reportedly depended on the preparation conditions, such as the NaOH/ CFA ratio and the fusion temperature. 73) Similar types of amorphous aluminosilicate geopolymers have also been obtained from aqueous suspensions of NaOH-fused-CFA; their XRD patterns presented in Fig. 6. …”

Section: Production Of Geopolymersmentioning

confidence: 64%

Resource recovery from coal fly ash waste: an overview study

Jha

Matsuda

Miyake

2008

J. Ceram. Soc. Japan

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Coal fly ash (CFA) is a useful byproduct of the combustion of coal. It is composed primarily of almost perfectly spherical aluminosilicate glass particles. This spherical characteristic and other characteristics of CFA should be exploited, rather than simply using CFA as inert filler for construction. Unfortunately, the presence of carbon residues and high levels of heavy metals has so far limited the uses of CFA. Forced leaching methods have been used to improve the technical and environmentally friendly qualities of CFA, but these processes do not seem to be economically viable. Actually, CFA is a major source of Si and Al for the synthesis of industrial minerals. Potential novel uses of CFA, e.g., for the synthesis of ceramic materials, ceramic membrane filters, zeolites, and geopolymers, are reviewed in this article with the intention of exploring new areas that will expand the positive reuse of fly ash, thereby helping to reduce the environmental and economic impacts of CFA disposal.

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Section: Production Of Geopolymersmentioning

confidence: 64%

Resource recovery from coal fly ash waste: an overview study

Jha

Matsuda

Miyake

2008

J. Ceram. Soc. Japan

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“…Fly ash based geopolymer are growing in commercial potential due to their reliance on cheap and readily available waste fly ash as the main feedstock. There is a significant trend in recycling of waste materials and converting it to usable and valuable materials [23]. One of these materials is coal fly ash.…”

Section: Geopolymermentioning

confidence: 99%

Review on Adsorption of Heavy Metal in Wastewater by Using Geopolymer

et al. 2017

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Abstract. Rapid development of advanced technology in Malaysia gave impact increasing in the accumulation of heavy metal every day in our daily life through wastewater. Long term exposure of human bodies to heavy metals susceptible to receives various infections and diseases. From an environmental and economic perspective, adsorption is acceptable process that can be applied in wastewater treatment. However, usage of activated carbon most acknowledged and costly adsorbents lead people to find an alternative to activated carbon. Several studies of physical properties of geopolymer make them gain attention to replace an activated carbon in the treatment of heavy metal. This paper review adsorption of heavy metal by using geopolymer.

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“…Among the mentioned methods, adsorption has some advantage when compared aforementioned conventional methods in terms the simplicity of utilization, effectiveness, low cost, no sludge formation, etc. However, natural and synthetic materials with low cost treatment such a bentonite, kaolinite, silicate, natural phosphate, activated carbon and fly ash based geopolymer have been applied for removal the organic pollutants from water contaminated by pollutants [10][11][12][13]. In recent years, many authors are interested in the synthesis of the adsorbents powdered and granulated goepolymer for removing the organic pollutants from aqueous media and wastewaters by the adsorption method [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…However, natural and synthetic materials with low cost treatment such a bentonite, kaolinite, silicate, natural phosphate, activated carbon and fly ash based geopolymer have been applied for removal the organic pollutants from water contaminated by pollutants [10][11][12][13]. In recent years, many authors are interested in the synthesis of the adsorbents powdered and granulated goepolymer for removing the organic pollutants from aqueous media and wastewaters by the adsorption method [14][15][16]. The batch and column adsorption of organic pollutants from aqueous solutions by goepolymer has been studied by various scientists [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

et al. 2018

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Abstract. Cationic dye adsorption from aqueous solution onto synthesized geopolymer was investigated by batch and fixed bed column experiments. The geopolymer material was elaborated by alkali solution and fly ash supplied by Jorf Lasfar power plant of Morocco. Physical and chemical characteristics of samples were determined by FX, DRX, SEM, 29 Si MAS NMR and Zeta potential methods. The Brunauer, Emmett and Teller (BET) technique is used to determine the surface area. The Barrett-Joyner-Halenda (BJH) method was performed to obtain pore size distribution curves and average pore diameter. Kinetics data were analyzed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. To predict the breakthrough curves and determine the main fixed bed column parameters, three kinetic models; Tomas, Bohart-Adams and YoonNelson models are applied to fitting the experimental data. The kinetic study showed that the pseudo-secondorder can be used to describe the methylene blue (MB) adsorption process on the geopolymer matrix. The kinetic models of the adsorption in dynamic column are suitable to describe the continuous adsorption process of dyestuff by the geopolymer. The results of this study indicated that geopolymer derived from fly ash can be used as a low cost effective adsorbent for cationic dye removal from industrial aqueous effluent.

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Geopolymeric adsorbents from fly ash for dye removal from aqueous solution

Cited by 253 publications

References 28 publications

Resource recovery from coal fly ash waste: an overview study

Resource recovery from coal fly ash waste: an overview study

Review on Adsorption of Heavy Metal in Wastewater by Using Geopolymer

Adsorption of cationic dye onto fly ash-based geopolymer: Batch and fixed bed column studies

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