Aluminosilicate and zeolitic materials synthesis using alum sludge from water treatment plants: Challenges and perspectives

Autor(es)

Machado, Raquel Cardoso. ; Valle, Stella Fortuna do ; Sena, Thais Beatriz Miqueleti ; Perrony, Paul Esteban Pherez ; Bettiol, Wagner ; Ribeiro, Caue

• Tipo de documento: Artigo Científico
• Fonte: WASTE MANAGEMENT; v. 186, p. 15-pg., 2024-06-13.

Resumo

Alum sludge (AS) is a by-product generated from drinking water treatment and produced in large amounts around the world. Its chemical composition makes this waste an emerging alternative source of silicon and aluminum for aluminosilicates or zeolite material production, which can add value to residues and contribute to the circular economy process on a global scale. In this sense, and considering the scarcity of information about AS, this review shows data collection about AS in different countries, including generation, chemical composition, and disposal information. The reuse of AS is discussed based on circular economy and the environmental gains derived from such approaches are highlighted, including the possibility of utilization with other residues (e.g., ash, bioproducts, etc). Moreover, this review shows and discusses the benefits and challenges of AS reuse in the synthesis process and how it can be a sustainable raw material for aluminosilicates and zeolite synthesis. The most common conditions (conventional or non -conventional) in zeolite synthesis from AS are mentioned and advantages, limitations and trends are discussed. The discussions and data presented can improve the AS management and reuse legislations, which certainly will collaborate with sustainable AS use and circular economy processes. (AU)

• Processo FAPESP: 22/09773-1 - Desenvolvimento de formulação fertilizante a partir de concentrados zeolíticos obtidos de lodos de ETA e microrganismos
• Beneficiário: Raquel Cardoso Machado
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/12210-3 - Desenvolvimento de alternativas tecnológicas para uso de lodo de ETA como matéria-prima para produção de fertilizantes de liberação controlada
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE
• Processo FAPESP: 23/02665-1 - Produção de concentrados zeolíticos a partir de lodos de ETA
• Beneficiário: Thais Beatriz Miqueleti de Sena
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 23/01549-8 - Desenvolvimento de tratamento mecanoquímico em via úmida para uso de lodo de ETA como matéria-prima para produção de fertilizantes de liberação controlada
• Beneficiário: Cauê Ribeiro de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Regular