Development of Membranes Based on Alkali-Activated Phosphate Mine Tailings for Humic Acid and Copper Removal from Water

Sousa, Flávio Augusto de; Della-Rocca, Daniela; Amorim, Suélen Maria de; Salla, Julia da Silveira; Peralta, Rosely A.; Rodríguez‐Castellón, Enrique; Moreira, Regina de Fátima Peralta Muniz

doi:10.1007/s11270-021-05433-4

Cited by 4 publications

(1 citation statement)

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“…Besides conventional fly ash or metakaolin, phosphate mine tailings could be used to produce geopolymer membranes, which also exhibit good compressive strength (11.2–43.7 MPa) and high BET surface area (321–384 m 2 /g). The geopolymer membrane could effectively remove Cu 2+ from water through the combined effect of ground adsorption and repulsion [ 122 ]. The SEM in Figure 13 shows that both the directly prepared geopolymer membrane and the modified geopolymer-based membrane have high porosity and could selectively remove the target material from the solution by adjusting the pore size.…”

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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Section: Application Of Geopolymers In Adsorptionmentioning

confidence: 99%