What is the optimum temperature to incinerate coffee grounds to use as geopolymer binder?
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The optimum temperature for incinerating coffee grounds to use as a geopolymer binder is crucial for achieving the desired properties. Research indicates that incinerating coffee grounds at varying temperatures can yield different outcomes. A study found that incinerating coffee grounds husk ash at temperatures ranging from 600°C to 750°C resulted in the dominant presence of potassium oxide and other chemical components similar to cement, except for silicon oxide. The chemical reaction between coffee grounds ash and cement in concrete mixtures showed improved compressive strength performance, with the best results achieved at a furnace temperature of 750°C, exceeding 40 MPa. This suggests that incinerating coffee grounds at 750°C is optimal for producing coffee grounds ash suitable as a cement replacement in geopolymer binders .
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55 Citations | Incinerate coffee grounds at 50°C for geopolymer binder use. High temperatures accelerate geopolymerization, enhancing strength development for embankment structural fill material. |
4 Citations | Not addressed in the paper. |
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