Ceramic membrane synthesis based on alkali activated blast furnace slag for separation of water from ethanol

Azarshab, Mohammadreza; Mohammadi, Farzaneh; Maghsoodloorad, Hojjatollah; Mohammadi, Toraj

doi:10.1016/j.ceramint.2016.07.005

Cited by 24 publications

(18 citation statements)

References 30 publications

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“…Their structures are zeolite‐like, a class of aluminosilicate materials, and can obtain zeolite structure with small molecular size and uniform pores by hydrothermal processes 27 . Took slag as raw material, a simple method was used to fabricate zeolite membrane for pervaporation separation of ethanol/water mixture (90%), and the maximum selectivity was 2579.48 107 . Some polymer fibers are easily degraded by alkaline hydrolysis, allowing them to be removed chemically without heat treatment.…”

Section: Porous Geopolymer Applicationsmentioning

confidence: 99%

“…Membrane separation processes have found wide applications in various fields, using the membrane to selectively separate two or more components through driving force (pressure, concentration, temperature, or electrical potential gradient). 107 It holds many advantages, such as simple operation, high efficiency, no phase transition, energy conservation, convenient use, small equipment size, low pollution, and continuous operation. [257][258][259] Compared with organic membranes, inorganic ones are capable of withstanding high temperature, chemical corrosion, organic solvents, long service life, high strength, and good antimicrobial properties.…”

Section: Membrane Separation Fieldmentioning

confidence: 99%

“…105 Slag is rarely used as the only source of porous geopolymer materials. Its porous structure is mainly formed by SFM 106,107 and DFM (H 2 O 2 ), 108,109 which can be used for adsorption mental ions 110,111 and building lightweight. 112,113 Slag is often used with other geopolymers, such as fly ash, [114][115][116] metakaolin, 117 red mud, 16,118 clay, 119 and so on, especially with fly ash.…”

Section: Slagmentioning

confidence: 99%

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A review on the porous geopolymer preparation for structural and functional materials applications

Chen

et al. 2022

Int J Applied Ceramic Tech

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Geopolymer (also called inorganic polymers) is a kind of amorphous gel material with a 3D structure consisting of SiO4 and AlO4 tetrahedra. It has drawn international attention due to its environmental friendliness and excellent performance. This review covers raw materials, preparation methods, and applications of porous geopolymer materials with micropore, mesopore, or macropore. The preparation methods can be divided into five categories: (i) self‐forming method, (ii) direct foaming method, (iii) adding filler method, (iv) particles stacking method, and (v) other methods. In this paper, different raw materials and applications were combined with the preparation methods, and some general conclusions of porous geopolymer were summarized. The applications of porous geopolymer materials in building materials, adsorbents, porous ceramics, membrane separation, catalyst, pH regulator, and other fields were introduced as well.

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Section: Porous Geopolymer Applicationsmentioning

confidence: 99%

Section: Membrane Separation Fieldmentioning

confidence: 99%

Section: Slagmentioning

confidence: 99%

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A review on the porous geopolymer preparation for structural and functional materials applications

Chen

et al. 2022

Int J Applied Ceramic Tech

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“…Afterward, a series of sodium (Na)-zeolites, including sodium (Na)-A, faujasite, sodium (Na)–P and sodium (Na)-X were attained via the hydrothermal alteration of geopolymers when sodium cations (Na + ) were present, which displayed huge potential for membrane separation and bulky adsorbent utilizations. It is eminent that the development and nucleation of zeolites rely upon the concentration of alkali metal cations and their kind [ 23 , 134 , 135 , 136 , 137 ].…”

Section: Applications Of Geopolymers For Water and Wastewater Treatmentmentioning

confidence: 99%

A State-of-the-Art Review on Innovative Geopolymer Composites Designed for Water and Wastewater Treatment

Luhar

Abdullah

et al. 2021

Materials

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There is nothing more fundamental than clean potable water for living beings next to air. On the other hand, wastewater management is cropping up as a challenging task day-by-day due to lots of new additions of novel pollutants as well as the development of infrastructures and regulations that could not maintain its pace with the burgeoning escalation of populace and urbanizations. Therefore, momentous approaches must be sought-after to reclaim fresh water from wastewaters in order to address this great societal challenge. One of the routes is to clean wastewater through treatment processes using diverse adsorbents. However, most of them are unsustainable and quite costly e.g. activated carbon adsorbents, etc. Quite recently, innovative, sustainable, durable, affordable, user and eco-benevolent Geopolymer composites have been brought into play to serve the purpose as a pretty novel subject matter since they can be manufactured by a simple process of Geopolymerization at low temperature, lower energy with mitigated carbon footprints and marvellously, exhibit outstanding properties of physical and chemical stability, ion-exchange, dielectric characteristics, etc., with a porous structure and of course lucrative too because of the incorporation of wastes with them, which is in harmony with the goal to transit from linear to circular economy, i.e., “one’s waste is the treasure for another”. For these reasons, nowadays, this ground-breaking inorganic class of amorphous alumina-silicate materials are drawing the attention of the world researchers for designing them as adsorbents for water and wastewater treatment where the chemical nature and structure of the materials have a great impact on their adsorption competence. The aim of the current most recent state-of-the-art and scientometric review is to comprehend and assess thoroughly the advancements in geo-synthesis, properties and applications of geopolymer composites designed for the elimination of hazardous contaminants viz., heavy metal ions, dyes, etc. The adsorption mechanisms and effects of various environmental conditions on adsorption efficiency are also taken into account for review of the importance of Geopolymers as most recent adsorbents to get rid of the death-defying and toxic pollutants from wastewater with a view to obtaining reclaimed potable and sparkling water for reuse offering to trim down the massive crisis of scarcity of water promoting sustainable water and wastewater treatment for greener environments. The appraisal is made on the performance estimation of Geopolymers for water and wastewater treatment along with the three-dimensional printed components are characterized for mechanical, physical and chemical attributes, permeability and Ammonium (NH4+) ion removal competence of Geopolymer composites as alternative adsorbents for sequestration of an assortment of contaminants during wastewater treatment.

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“…Many efforts have been made to remove water from an ethanol-water mixture, including processes, such as azeotropic distillation using solvents or entrainers [1,2], liquid adsorption using zeolites, alumina, resin and carbon [3][4][5][6][7], and membrane separation [8][9][10] to name a few. The distillation technique requires an intensive energy, while liquid adsorption consists of several stages in sequence.…”

Section: Introductionmentioning

confidence: 99%

Ethanol Purification Using Activated Natural Zeolite

Purnomo¹,

Putri²,

Perdana³

et al. 2017

MST

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Bio ethanol is one of the potential fuels in the future. However, ethanol in water mixture has an azeotropic concentration of 95.6 wt. %, which makes it difficult to purify further. The common method of purification is by using an azeotropic distillation column, which requires an intensive energy and an addition of specific solvent. In this study, ethanol purification is done using an adsorption column packed with zeolite Raschig rings. The natural zeolite ring was modified beforehand using the NaOH solution to enhance the material's water adsorption performance. The ethanol purity can reach more than 99% with the modified zeolite packing. The modification also increases the saturation time of the packed bed column, thus making it more efficient. AbstractPemurnian Etanol dengan Zeolit Alam Teraktivasi. Bio ethanol adalah salah satu bahan bakar potensial di masa depan. Namun campuran etanol dalam air memiliki titik azeotrop pada konsentrasi 95,6 % berat, sehingga sulit untuk dimurnikan lebih lanjut. Metode umum yang dipakai dalam pemurnian etanol adalah menggunakan kolom distilasi azeotropik yang membutuhkan energi yang intensif dan penambahan solven tertentu. Pada penelitian ini, pemurnian etanol dilakukan dengan kolom adsorpsi dengan bahan isian cincin zeolite di dalamnya. Zeolit alam sebelum digunakan dimodifikasi dengan larutan NaOH agar kemampuan penjerapan (adsorpsi) air menjadi meningkat. Kemurnian etanol dapat mencapai lebih dari 99% dengan zeolite termodifikasi. Modifikasi ini juga meningkatkan waktu saturasi kolom sehingga kolom bisa dijalankan dengan efisien.

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Ceramic membrane synthesis based on alkali activated blast furnace slag for separation of water from ethanol

Cited by 24 publications

References 30 publications

A review on the porous geopolymer preparation for structural and functional materials applications

A review on the porous geopolymer preparation for structural and functional materials applications

A State-of-the-Art Review on Innovative Geopolymer Composites Designed for Water and Wastewater Treatment

Ethanol Purification Using Activated Natural Zeolite

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