Adding value to aluminosilicate solid wastes to produce adsorbents, catalysts and filtration membranes for water and wastewater treatment

Rocca, Daniela Gier Della; Peralta, Rosane Marina; Peralta, Rosely A.; Rodríguez‐Castellón, Enrique; Moreira, Regina de Fátima Peralta Muniz

doi:10.1007/s10853-020-05276-0

Cited by 30 publications

(14 citation statements)

References 173 publications

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“…Additionally, its proven capability to enhance the binder’s strength by three-fold can also contribute to its subsequent application as a precursor to geopolymer materials Belonging to the aluminosilicate group and having high porosity, a leached residue can be converted to adsorbents, catalysts, and membrane filters for the removal of hazardous substances from wastewater. , …”

Section: Strategies For Decarbonization and Waste Managementmentioning

confidence: 99%

Australia’s Spodumene: Advances in Lithium Extraction Technologies, Decarbonization, and Circular Economy

Asif,

Li,

Lim

et al. 2024

Ind. Eng. Chem. Res.

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Among all of the lithium-bearing minerals, spodumene possesses the highest theoretical lithium abundance. Since the 1990s, Australia, with the world's largest spodumene (LiAl(SiO 3 ) 2 ) reserves, has been producing lithium as a mineral concentrate rather than a refined product. Nevertheless, the country is now moving forward to fortify its processing facilities, aligning with the vision for greener energy. This review provides a comprehensive outlook on the current status of spodumene reserves and their processing facilities along with potential expansion in the future. Spodumene processing requires several metallurgical processes ranging from salt roasting to acid leaching. However, the conventional industrial practices for Li-extraction from ores result in excessive pressure on resources, energy, and waste management. Considering these factors as an indicator of a circular economy, the process of lithium extraction should be simplified. In such a context, different practices for Li-extraction from spodumene are exemplified by recent technological advancements. Afterward, strategies for decarbonization, waste management, and environmental aspects were provided, with a perspective of circular economy. This review is expected to serve as a reference for research and development for potential industrial applications in ore processing especially for spodumene.

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Section: Strategies For Decarbonization and Waste Managementmentioning

confidence: 99%

Australia’s Spodumene: Advances in Lithium Extraction Technologies, Decarbonization, and Circular Economy

Asif,

Li,

Lim

et al. 2024

Ind. Eng. Chem. Res.

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“…Inorganic membranes make up for the shortcomings of organic membranes, but inorganic membranes are more expensive to prepare, and the process is not mature. Therefore, the emergence of geopolymer membranes provides an opportunity for the development of inorganic membrane applications [ 117 ]. Numerous studies have proven that geopolymers have excellent adsorption properties, and the advantages of geopolymers could be exploited to prepare low-cost and high-efficiency inorganic membranes.…”

Section: Application Of Geopolymers In Adsorptionmentioning

confidence: 99%

Research and Application Progress of Geopolymers in Adsorption: A Review

Zhao

et al. 2022

Nanomaterials

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Geopolymer is a porous inorganic material with a three-dimensional mesh structure, good mechanical properties, a simple preparation process (no sintering) and a low economic cost, and it is environmentally friendly. Geopolymer concrete has been widely used in the construction field, and many other studies have revealed that geopolymer will become one of the most promising inorganic materials with unique structure and properties. This paper provides a review of the development and current status of geopolymers and briefly explains the effects of material proportioning, experimental factors and activators on geopolymer performance. Because of the advantages of high specific surface area and high porosity, geopolymers could be used as adsorbent materials. This paper summarizes the research progresses of the adsorption of metal cations, anions, dyes, and gases by geopolymers, which emphasizes the geopolymer membranes in adsorption, and discusses the challenges and opportunities for the development of more efficient, sustainable and practical adsorption protocols.

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“…Compared to conventional PEC photoanode materials (such as TiO 2 , 22 Co 3 O 4 , 23 ZnO, 24 BiVO 4 , 25 and g-C 3 N 4 26 ), geopolymers are cost-effective and environment-friendly because they can be synthesized using a simple, lowenergy, and low-carbon dioxide emission process. 27,28 Moreover, the electroconductivity of the photoanodes could be easily improved by introducing carbon materials, such as graphene or carbon fiber. However, to the best of our knowledge, the synthesis and application of PEC geopolymer photoanodes have not been reported thus far.…”

Section: Introductionmentioning

confidence: 99%

“…assembled graphene into geopolymers to enhance the electroconductivity and photocatalytic activity. Compared to conventional PEC photoanode materials (such as TiO 2 , 22 Co 3 O 4 , 23 ZnO, 24 BiVO 4 , 25 and g‐C 3 N 4 26 ), geopolymers are cost‐effective and environment‐friendly because they can be synthesized using a simple, low‐energy, and low‐carbon dioxide emission process 27,28 . Moreover, the electroconductivity of the photoanodes could be easily improved by introducing carbon materials, such as graphene or carbon fiber.…”

Section: Introductionmentioning

confidence: 99%

A novel carbon‐fiber geopolymer composite‐coated electrodes for photoelectrocatalysis: Fabrication and application

Meng

Zhang

et al. 2023

Int J Applied Ceramic Tech

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The photoelectrocatalysis is an efficient and sustainable degradation method for organic contaminant, where the photoanode material plays a critical role. Development of novel, inexpensive, and high‐performance photoanode materials is significant to enhance the degradation performance of anodes catalysis. Herein, a novel carbon‐fiber geopolymer composite‐coated electrode with low cost and facile production was prepared by incorporating carbon fibers in a geopolymer matrix. The as‐developed photoelectrocatalyst coupled with persulfate could effectively degrade more than 98 % of rhodamine B within 6 min, which demonstrated superior catalytic activity compared with various catalysts reported in the literature. Moreover, the composite electrodes exhibited excellent reusability. The endogenous Fe2O3 and TiO2 in the geopolymer matrix were the main active materials, providing photoelectron‐hole pairs for dye molecule degradation. Significantly, the carbon fibers in the matrix effectively connected the scattered oxide species and prompted the separation and migration of photoinduced carriers while enhancing the stability of the catalysts and improving the conductivity of the matrix. When the carbon content was increased from 0 to 6 wt%, the conductivity of the composite increased by 17.75 times. This study offers a cost‐effective and eco‐friendly photoelectrocatalyst, which shows significant potential for further development.

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Adding value to aluminosilicate solid wastes to produce adsorbents, catalysts and filtration membranes for water and wastewater treatment

Cited by 30 publications

References 173 publications

Australia’s Spodumene: Advances in Lithium Extraction Technologies, Decarbonization, and Circular Economy

Australia’s Spodumene: Advances in Lithium Extraction Technologies, Decarbonization, and Circular Economy

Research and Application Progress of Geopolymers in Adsorption: A Review

A novel carbon‐fiber geopolymer composite‐coated electrodes for photoelectrocatalysis: Fabrication and application

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