Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/46535
Título
A systematic optimization of piggery wastewater treatment with purple phototrophic bacteria
Año del Documento
2020
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
Chemosphere, 2020, vol. 253, p. 126621
Resumo
The increase in natural water bodies pollution caused by intensive animal farming requires the development of innovative sustainable treatment processes. This study assessed the influence of piggery wastewater (PWW) load, air dosing, CO2/NaHCO3− supplementation and pH control on PWW treatment by mixed cultures of purple phototrophic bacteria (PPB) under infrared radiation in batch photobioreactors. PPB was not able to grow in raw PWW but PWW dilution prevented inhibition and supported an effective light penetration. Despite the fact that PPB were tolerant to O2, carbon recovery decreased in the presence of air (induced by stripping). CO2 supplementation was identified as an effective strategy to maximize the removal of carbon during PPB-based PWW treatment with removal efficiencies of 72% and 74% for TOC and VFAs. However, the benefits derived from CO2 addition were induced by the indirect pH control exerted in the cultivation medium. Thus, PPB supported an optimal pollutant removal performance at pH 7, with removal efficiencies of 75%, 39% and 98% for TOC, TN and VFAs.
Materias Unesco
23 Química
24 Ciencias de la Vida
Palabras Clave
Bacterias púrpuras sin azufre
Purple non-sulphur bacteria
Bacterias fotosintéticas
Photosynthetic bacteria
Swine manure
ISSN
0045-6535
Revisión por pares
SI
Patrocinador
Junta de Castilla y León, programa EU-FEDER (CLU 2017-09 y UIC 071)
CONICYT (PFCHA / DOCTORADO BECAS CHILE / 2017–72180211)
CONICYT (PFCHA / DOCTORADO BECAS CHILE / 2017–72180211)
Version del Editor
Propietario de los Derechos
© 2020 Elsevier
Idioma
eng
Tipo de versión
info:eu-repo/semantics/acceptedVersion
Derechos
openAccess
Aparece en las colecciones
Arquivos deste item
Exceto quando indicado o contrário, a licença deste item é descrito como Attribution-NonCommercial-NoDerivatives 4.0 Internacional