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A platform for research: civil engineering, architecture and urbanism
Rapid performance optimization strategy of MK-FA-GBFS based geopolymer foam heavy-metal adsorbent
https://orcid.org/0000-0003-2107-2057
Highlights: Simplex-centroid method was applied to geopolymer (GP) foam adsorbent. Effects of precursor fractions on the GP absorbents properties were evaluated. Chemical foaming applied to the optimal component to prepare an excellent GP foam. The optimal absorbent out-performs state-of-the-art materials from the literature.
Abstract Geopolymer foams (GPFs) are promising materials for heavy-metal-containing wastewater treatment. However, because of the diversity of precursors and the complex application environments, it is challenging to balance the processing and application performances. Herein, a “simplex-centroid” mixture design method was explored to optimize the performances and establish relationships between the precursors, microstructure, and molecular structure. Further, according to the design performance and rheological limitations of the foaming system, an optimal component was selected to fabricate a GPF using chemical foaming. The fabricated GPF exhibited a high compressive strength (0.86 MPa) and high open porosity (∼86%) with uniform pores with diameters of 0.1–1.2 mm. Pb2+, Cu2+, and Ni2+ static adsorption capacities of 112.8, 64.9, and 40.2 mg/g, respectively, were achieved. The combination of simplex-centroid method and chemical foaming is effective for optimizing the processing and application performances of GPF, and could be beneficial for future large-scale manufacturing of GPFs for water-treatment applications.
Rapid performance optimization strategy of MK-FA-GBFS based geopolymer foam heavy-metal adsorbent
https://orcid.org/0000-0003-2107-2057
Highlights: Simplex-centroid method was applied to geopolymer (GP) foam adsorbent. Effects of precursor fractions on the GP absorbents properties were evaluated. Chemical foaming applied to the optimal component to prepare an excellent GP foam. The optimal absorbent out-performs state-of-the-art materials from the literature.
Abstract Geopolymer foams (GPFs) are promising materials for heavy-metal-containing wastewater treatment. However, because of the diversity of precursors and the complex application environments, it is challenging to balance the processing and application performances. Herein, a “simplex-centroid” mixture design method was explored to optimize the performances and establish relationships between the precursors, microstructure, and molecular structure. Further, according to the design performance and rheological limitations of the foaming system, an optimal component was selected to fabricate a GPF using chemical foaming. The fabricated GPF exhibited a high compressive strength (0.86 MPa) and high open porosity (∼86%) with uniform pores with diameters of 0.1–1.2 mm. Pb2+, Cu2+, and Ni2+ static adsorption capacities of 112.8, 64.9, and 40.2 mg/g, respectively, were achieved. The combination of simplex-centroid method and chemical foaming is effective for optimizing the processing and application performances of GPF, and could be beneficial for future large-scale manufacturing of GPFs for water-treatment applications.
Rapid performance optimization strategy of MK-FA-GBFS based geopolymer foam heavy-metal adsorbent
https://orcid.org/0000-0003-2107-2057
Highlights: Simplex-centroid method was applied to geopolymer (GP) foam adsorbent. Effects of precursor fractions on the GP absorbents properties were evaluated. Chemical foaming applied to the optimal component to prepare an excellent GP foam. The optimal absorbent out-performs state-of-the-art materials from the literature.
Abstract Geopolymer foams (GPFs) are promising materials for heavy-metal-containing wastewater treatment. However, because of the diversity of precursors and the complex application environments, it is challenging to balance the processing and application performances. Herein, a “simplex-centroid” mixture design method was explored to optimize the performances and establish relationships between the precursors, microstructure, and molecular structure. Further, according to the design performance and rheological limitations of the foaming system, an optimal component was selected to fabricate a GPF using chemical foaming. The fabricated GPF exhibited a high compressive strength (0.86 MPa) and high open porosity (∼86%) with uniform pores with diameters of 0.1–1.2 mm. Pb2+, Cu2+, and Ni2+ static adsorption capacities of 112.8, 64.9, and 40.2 mg/g, respectively, were achieved. The combination of simplex-centroid method and chemical foaming is effective for optimizing the processing and application performances of GPF, and could be beneficial for future large-scale manufacturing of GPFs for water-treatment applications.
Rapid performance optimization strategy of MK-FA-GBFS based geopolymer foam heavy-metal adsorbent
Zhang, Xuhao (author) / Zhang, Xiao (author) / Ma, Minghui (author) / Sun, Yuxue (author) / Ma, Chaoqun (author)
2023-06-13
Article (Journal)
Electronic Resource
English
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