Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts
Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and ch...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Occhicone, Alessio [verfasserIn] Graziuso, Stanislao Giorgio [verfasserIn] De Gregorio, Emmanuel [verfasserIn] Montagnaro, Fabio [verfasserIn] Ricciotti, Laura [verfasserIn] Tarallo, Oreste [verfasserIn] Roviello, Giuseppina [verfasserIn] Ferone, Claudio [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2024 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of cleaner production - Amsterdam [u.a.] : Elsevier Science, 1993, 435 |
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| Übergeordnetes Werk: |
volume:435 |
| DOI / URN: |
10.1016/j.jclepro.2023.140492 |
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ELV066545803 |
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| 520 | |a Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. | ||
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| 700 | 1 | |a Graziuso, Stanislao Giorgio |e verfasserin |4 aut | |
| 700 | 1 | |a De Gregorio, Emmanuel |e verfasserin |4 aut | |
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10.1016/j.jclepro.2023.140492 doi (DE-627)ELV066545803 (ELSEVIER)S0959-6526(23)04650-4 DE-627 ger DE-627 rda eng 690 330 VZ 43.35 bkl 85.35 bkl Occhicone, Alessio verfasserin (orcid)0000-0002-3652-4987 aut Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. Red mud Metakaolin Acidic activation Basic activation Geopolymer Alternative building materials Graziuso, Stanislao Giorgio verfasserin aut De Gregorio, Emmanuel verfasserin aut Montagnaro, Fabio verfasserin (orcid)0000-0002-6377-3989 aut Ricciotti, Laura verfasserin (orcid)0000-0002-2817-1800 aut Tarallo, Oreste verfasserin (orcid)0000-0001-5952-523X aut Roviello, Giuseppina verfasserin (orcid)0000-0001-6116-4293 aut Ferone, Claudio verfasserin (orcid)0000-0002-8660-3771 aut Enthalten in Journal of cleaner production Amsterdam [u.a.] : Elsevier Science, 1993 435 Online-Ressource (DE-627)324655878 (DE-600)2029338-0 (DE-576)252613988 0959-6526 nnns volume:435 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 435 |
| spelling |
10.1016/j.jclepro.2023.140492 doi (DE-627)ELV066545803 (ELSEVIER)S0959-6526(23)04650-4 DE-627 ger DE-627 rda eng 690 330 VZ 43.35 bkl 85.35 bkl Occhicone, Alessio verfasserin (orcid)0000-0002-3652-4987 aut Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. Red mud Metakaolin Acidic activation Basic activation Geopolymer Alternative building materials Graziuso, Stanislao Giorgio verfasserin aut De Gregorio, Emmanuel verfasserin aut Montagnaro, Fabio verfasserin (orcid)0000-0002-6377-3989 aut Ricciotti, Laura verfasserin (orcid)0000-0002-2817-1800 aut Tarallo, Oreste verfasserin (orcid)0000-0001-5952-523X aut Roviello, Giuseppina verfasserin (orcid)0000-0001-6116-4293 aut Ferone, Claudio verfasserin (orcid)0000-0002-8660-3771 aut Enthalten in Journal of cleaner production Amsterdam [u.a.] : Elsevier Science, 1993 435 Online-Ressource (DE-627)324655878 (DE-600)2029338-0 (DE-576)252613988 0959-6526 nnns volume:435 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 435 |
| allfields_unstemmed |
10.1016/j.jclepro.2023.140492 doi (DE-627)ELV066545803 (ELSEVIER)S0959-6526(23)04650-4 DE-627 ger DE-627 rda eng 690 330 VZ 43.35 bkl 85.35 bkl Occhicone, Alessio verfasserin (orcid)0000-0002-3652-4987 aut Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. Red mud Metakaolin Acidic activation Basic activation Geopolymer Alternative building materials Graziuso, Stanislao Giorgio verfasserin aut De Gregorio, Emmanuel verfasserin aut Montagnaro, Fabio verfasserin (orcid)0000-0002-6377-3989 aut Ricciotti, Laura verfasserin (orcid)0000-0002-2817-1800 aut Tarallo, Oreste verfasserin (orcid)0000-0001-5952-523X aut Roviello, Giuseppina verfasserin (orcid)0000-0001-6116-4293 aut Ferone, Claudio verfasserin (orcid)0000-0002-8660-3771 aut Enthalten in Journal of cleaner production Amsterdam [u.a.] : Elsevier Science, 1993 435 Online-Ressource (DE-627)324655878 (DE-600)2029338-0 (DE-576)252613988 0959-6526 nnns volume:435 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 435 |
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10.1016/j.jclepro.2023.140492 doi (DE-627)ELV066545803 (ELSEVIER)S0959-6526(23)04650-4 DE-627 ger DE-627 rda eng 690 330 VZ 43.35 bkl 85.35 bkl Occhicone, Alessio verfasserin (orcid)0000-0002-3652-4987 aut Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. Red mud Metakaolin Acidic activation Basic activation Geopolymer Alternative building materials Graziuso, Stanislao Giorgio verfasserin aut De Gregorio, Emmanuel verfasserin aut Montagnaro, Fabio verfasserin (orcid)0000-0002-6377-3989 aut Ricciotti, Laura verfasserin (orcid)0000-0002-2817-1800 aut Tarallo, Oreste verfasserin (orcid)0000-0001-5952-523X aut Roviello, Giuseppina verfasserin (orcid)0000-0001-6116-4293 aut Ferone, Claudio verfasserin (orcid)0000-0002-8660-3771 aut Enthalten in Journal of cleaner production Amsterdam [u.a.] : Elsevier Science, 1993 435 Online-Ressource (DE-627)324655878 (DE-600)2029338-0 (DE-576)252613988 0959-6526 nnns volume:435 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 435 |
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10.1016/j.jclepro.2023.140492 doi (DE-627)ELV066545803 (ELSEVIER)S0959-6526(23)04650-4 DE-627 ger DE-627 rda eng 690 330 VZ 43.35 bkl 85.35 bkl Occhicone, Alessio verfasserin (orcid)0000-0002-3652-4987 aut Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. Red mud Metakaolin Acidic activation Basic activation Geopolymer Alternative building materials Graziuso, Stanislao Giorgio verfasserin aut De Gregorio, Emmanuel verfasserin aut Montagnaro, Fabio verfasserin (orcid)0000-0002-6377-3989 aut Ricciotti, Laura verfasserin (orcid)0000-0002-2817-1800 aut Tarallo, Oreste verfasserin (orcid)0000-0001-5952-523X aut Roviello, Giuseppina verfasserin (orcid)0000-0001-6116-4293 aut Ferone, Claudio verfasserin (orcid)0000-0002-8660-3771 aut Enthalten in Journal of cleaner production Amsterdam [u.a.] : Elsevier Science, 1993 435 Online-Ressource (DE-627)324655878 (DE-600)2029338-0 (DE-576)252613988 0959-6526 nnns volume:435 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 435 |
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Occhicone, Alessio @@aut@@ Graziuso, Stanislao Giorgio @@aut@@ De Gregorio, Emmanuel @@aut@@ Montagnaro, Fabio @@aut@@ Ricciotti, Laura @@aut@@ Tarallo, Oreste @@aut@@ Roviello, Giuseppina @@aut@@ Ferone, Claudio @@aut@@ |
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Occhicone, Alessio |
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690 330 VZ 43.35 bkl 85.35 bkl Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts Red mud Metakaolin Acidic activation Basic activation Geopolymer Alternative building materials |
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ddc 690 bkl 43.35 bkl 85.35 misc Red mud misc Metakaolin misc Acidic activation misc Basic activation misc Geopolymer misc Alternative building materials |
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synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts |
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Synthesis and characterization of new acid-activated red mud-metakaolin geopolymers and comparison with their alkaline counterparts |
| abstract |
Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. |
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Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. |
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Red mud (RM), also known as bauxite residue, is the primary waste product generated by the Bayer process for alumina production from bauxite. Its disposal represents one of the biggest issues in the mining industry since the high amount produced every year. In the present paper, the synthesis and characterization of new materials obtained by reacting RM and RM/metakaolin mixtures with phosphoric acid (H3PO4) are reported. The obtained samples are characterized by excellent chemical and physical properties and superior compressive strength (up to 63 MPa), suggesting their application in the building sector. Moreover, a comparison with samples produced starting from a similar powder composition, but obtained in alkaline conditions, has been also performed. The proposed synthesis method enables the recovery of this industrial waste by producing objects with properties and characteristics comparable to existing construction materials. However, it is advisable to conduct life cycle assessment (LCA) and life cycle costing (LCC) analyses before undertaking large-scale implementation, even considering the possibility of using phosphoric acid activation procedure with the RM residual obtained after the extraction and recovery of metals and rare earth elements, widely studied for this type of waste. |
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| score |
7.4006615 |