RT info:eu-repo/semantics/article
T1 Exploring the metabolic capabilities of purple phototrophic bacteria during piggery wastewater treatment
A1 Sepúlveda Muñoz, Cristian Andrés
A1 Torres Franco, Andrés Felipe
A1 Godos Crespo, Ignacio de
A1 Muñoz Torre, Raúl
K1 Nutrient recovery
K1 Recuperación de nutrientes
K1 Purple phototrophic bacteria
K1 Bacterias púrpuras
K1 Radiation
K1 Radiación
K1 Rhodopseudomonas palustris
AB Purple phototrophic bacteria (PPB) are receiving an increasing attention due to their extraordinary metabolic capabilities for nutrient and carbon recovery from wastewaters. Batch experiments were herein performed to assess the influence of the type of radiation (photosynthetic active radiation (PAR), near-infrared radiation (NIR) and PAR using an UV-VIS absorbing filter), temperature (13 °C and 30 °C), type of metabolism (photoheterotrophic and chemoheterotrophic), type of inoculum (mixed culture and pure strain Rhodopseudomonas palustris) and wastewater load (1:5 and 1:10 dilutions) during piggery wastewater (PWW) treatment by PPB. The use of UV-VIS filtered PAR supported both a high content of bacteriochlorophyll in PPB and the highest total organic carbon (TOC) and total nitrogen (TN) removal efficiency (RE) (74 % and 37 %, respectively), but at lower maximum removal rates. Interestingly, PPB exhibited similar TOC-REs and TN-REs (73 % and 37 %, respectively) at 13 °C than at 30 °C (71 % and 45 %, respectively), at similar removal rates. Mixed cultures of PPB achieved a higher nutrient assimilation rate than R. palustris, supporting a total assimilation of the volatile fatty acids present in 10 folds diluted PWW. In brief, mixed cultures of PPB were highly efficient during PWW treatment, regardless of the type of radiation and temperature under photoheterotrophic growth.
PB Elsevier
SN 2214-7144
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/57050
UL https://uvadoc.uva.es/handle/10324/57050
LA eng
NO Journal of Water Process Engineering, 2022, vol. 50, 103317
NO Producción Científica
DS UVaDOC
RD 18-nov-2024