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Recycling of spent catalyst and waste sludge from industry to substitute raw materials in the preparation of Portland cement clinker

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Title: Recycling of spent catalyst and waste sludge from industry to substitute raw materials in the preparation of Portland cement clinker
Authors: Kae-Long Lin, Kang-Wei Lo, Ming-Jui Hung, Ta-Wui Cheng, Yu-Min Chang
Source: Sustainable Environment Research, Vol 27, Iss 5, Pp 251-257 (2017)
Publisher Information: BMC, 2017.
Publication Year: 2017
Collection: LCC:Environmental technology. Sanitary engineering
Subject Terms: Spent catalyst, Waste sludge, Eco-cement, Clinker, Utilize, Environmental technology. Sanitary engineering, TD1-1066
More Details: This study investigated the feasibility of using waste limestone sludge, waste stone sludge, iron oxide sludge, and spent catalyst as raw materials in the production of eco-cement. The compressive strength development of the Eco Cement-A (ECO-A) paste was similar to that of ordinary Portland cement (OPC) pastes. The compressive strength development of the ECO-B paste was higher than that of OPC pastes. In addition, the C2S (Ca2SiO4, C2S) and C3S (Ca3SiO5) minerals in the eco-cement paste were continuously utilized to hydrate the Ca(OH)2 and calcium silicate hydrates gel (Ca6Si3O12·H2O, C–S–H) throughout the curing time. When ECO-C clinker contained 8% spent catalyst, the C3S mineral content decreased and C3A (3 CaO·Al2O3) content increased, thereby causing the structure to weaken and compressive strength to decrease. The results showed that the developed eco-cement with 4% spent catalyst possessed compressive strength properties similar to those of OPC pastes.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2468-2039
Relation: http://www.sciencedirect.com/science/article/pii/S2468203916302710; https://doaj.org/toc/2468-2039
DOI: 10.1016/j.serj.2017.05.001
Access URL: https://doaj.org/article/16dfa085f7b1431bb22d795e2323a058
Accession Number: edsdoj.16dfa085f7b1431bb22d795e2323a058
Database: Directory of Open Access Journals
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  Data: Recycling of spent catalyst and waste sludge from industry to substitute raw materials in the preparation of Portland cement clinker
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  Data: Sustainable Environment Research, Vol 27, Iss 5, Pp 251-257 (2017)
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  Data: <searchLink fieldCode="DE" term="%22Spent+catalyst%22">Spent catalyst</searchLink><br /><searchLink fieldCode="DE" term="%22Waste+sludge%22">Waste sludge</searchLink><br /><searchLink fieldCode="DE" term="%22Eco-cement%22">Eco-cement</searchLink><br /><searchLink fieldCode="DE" term="%22Clinker%22">Clinker</searchLink><br /><searchLink fieldCode="DE" term="%22Utilize%22">Utilize</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+technology%2E+Sanitary+engineering%22">Environmental technology. Sanitary engineering</searchLink><br /><searchLink fieldCode="DE" term="%22TD1-1066%22">TD1-1066</searchLink>
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  Data: This study investigated the feasibility of using waste limestone sludge, waste stone sludge, iron oxide sludge, and spent catalyst as raw materials in the production of eco-cement. The compressive strength development of the Eco Cement-A (ECO-A) paste was similar to that of ordinary Portland cement (OPC) pastes. The compressive strength development of the ECO-B paste was higher than that of OPC pastes. In addition, the C2S (Ca2SiO4, C2S) and C3S (Ca3SiO5) minerals in the eco-cement paste were continuously utilized to hydrate the Ca(OH)2 and calcium silicate hydrates gel (Ca6Si3O12·H2O, C–S–H) throughout the curing time. When ECO-C clinker contained 8% spent catalyst, the C3S mineral content decreased and C3A (3 CaO·Al2O3) content increased, thereby causing the structure to weaken and compressive strength to decrease. The results showed that the developed eco-cement with 4% spent catalyst possessed compressive strength properties similar to those of OPC pastes.
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      – SubjectFull: Spent catalyst
        Type: general
      – SubjectFull: Waste sludge
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      – SubjectFull: Eco-cement
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