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Production of Transparent Soda-Lime Glass from Rice Husk Containing Iron and Manganese Impurities

1
Graduation Program in Engineering, Federal University of Pampa, Av. Tiarajú 810, Alegrete 97564-550, Brazil
2
Institute of Chemistry, São Paulo State University, Unesp, Rua Prof. Francisco Degni, 55, Araraquara 14800-060, Brazil
*
Authors to whom correspondence should be addressed.
Received: 1 August 2020 / Revised: 3 October 2020 / Accepted: 9 October 2020 / Published: 25 November 2020
Glass is a familiar material that requires abundant mineral sources, with devastating consequences for the environment. Rice husk ash (RHA) presents a very high silica content (>95%) and it can be a very promising alternative source for silica in silica-based glass. However, impurities like manganese and iron, which depend on the rice harvest, might limit RHA use, particularly in the production of optical transparent glasses. In this work, we discussed how Mn and Fe can affect the coloring of the produced glass, and how the effect of these impurities can be removed. First, the RHA was treated with acid solutions, leading to the production of a soda-lime glass with similar transparency to commercial glass (>70%). Secondly, another simpler approach was studied: a small amount of antimony oxide was added in the composition of the glass, obtaining a transparent glass (>80%, same thickness) with RHA. View Full-Text
Keywords: transparent rice husk glass; sustainable glass; manganese oxide impurities; antimony oxide transparent rice husk glass; sustainable glass; manganese oxide impurities; antimony oxide
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MDPI and ACS Style

Gonçalves, J.; da Silva, G.; Lima, L.; Morgado, D.; Nalin, M.; Armas, L.E.G.; Valsecchi, C.; Menezes, J.W. Production of Transparent Soda-Lime Glass from Rice Husk Containing Iron and Manganese Impurities. Ceramics 2020, 3, 494-506. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3040040

AMA Style

Gonçalves J, da Silva G, Lima L, Morgado D, Nalin M, Armas LEG, Valsecchi C, Menezes JW. Production of Transparent Soda-Lime Glass from Rice Husk Containing Iron and Manganese Impurities. Ceramics. 2020; 3(4):494-506. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3040040

Chicago/Turabian Style

Gonçalves, Jaderson; da Silva, Gustavo; Lima, Liandra; Morgado, Daniella; Nalin, Marcelo; Armas, Luis E.G.; Valsecchi, Chiara; Menezes, Jacson W. 2020. "Production of Transparent Soda-Lime Glass from Rice Husk Containing Iron and Manganese Impurities" Ceramics 3, no. 4: 494-506. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3040040

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