Porous geopolymer spheres as novel pH buffering materials

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• 作者：Rui M. Novais ; ^{ruimnovais@ua.pt} ; M.P. Seabra ; J.A. Labrincha
• 关键词：Geopolymer spheres ; Biomass fly ash ; Buffer capacity ; Alkalis leaching
• 刊名：Journal of Cleaner Production
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：143
• 期：Complete
• 页码：1114-1122
• 全文大小：3265 K
• 卷排序：143

文摘

Porous biomass fly ash-based geopolymer spheres for pH regulation were developed. The raw materials chemical composition dictates the pH buffering capacity. Fly ash-based spheres exhibiting gradual and prolonged leaching were produced. The narrow pH decay suggests their use as pH regulators in anaerobic digestion. Biomass fly ash as raw material in geopolymers ensures waste valorization.