Assessment of phase distribution and removal of metals in anaerobic digesters

Autor(es)

Yabuki, L. N. M. ^[1] ; Queluz, J. G. T. ^[1] ; Garcia, M. L. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Inst Geosci & Exact Sci IGCE, Av 24 A, 1515 Bela Vista, BR-13506900 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY; v. 19, n. 1, p. 463-474, JAN 2022.
• Citações Web of Science: 0

Resumo

A determination of the mobility and bioavailability of metals could provide more comprehensive knowledge about the real environmental potential of anaerobic biodigestion and health risks associated with inappropriately treated wastewater. This study aims to determine the distribution of cobalt, copper, iron, manganese, nickel and zinc among the particulate and dissolved fractions in three wastewater types (molasses, vinasse, and acid mine drainage). Affluent and effluent samples from three bioreactors analyzing each wastewater type were collected and separated into dissolved and total fractions; metal partitioning and removal efficiencies from anaerobic treatment were also evaluated. In the influent, substantial proportions of copper and iron (particulate fraction > 70%) are present in the particulate fraction that can be removed more easily than the dissolved fractions of cobalt, nickel, manganese and zinc (dissolved fraction > 53%), requiring subsequent removal techniques, such as ion exchange. For biotechnological applications, this study indicates the substantial potential of the anaerobic treatment for metal removal as an innovative eco-friendly process that minimizes the use of non-renewable resources. (AU)

• Processo FAPESP: 15/06246-7 - Aplicação do conceito de biorrefinaria a estações de tratamento biológico de águas residuárias: o controle da poluição ambiental aliado à recuperação de matéria e energia
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 17/18075-8 - Avaliação da eficiência e modelagem dinâmica de alagados construídos de fluxo subsuperficial horizontal com aeração intermitente
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• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/24526-0 - Influência de elementos-traço na geração de biogás a partir do tratamento de águas residuárias
• Beneficiário: Lauren Nozomi Marques Yabuki
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado