2024-03-28T18:20:36Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/465392023-08-24T08:24:20Zcom_10324_35294com_10324_952com_10324_894col_10324_35295
UVaDOC
author
Sepúlveda Muñoz, Cristian Andrés
author
Ángeles Torres, Roxana
author
Godos Crespo, Ignacio de
author
Muñoz Torre, Raúl
2021-05-10T10:08:07Z
2021-05-10T10:08:07Z
2020
Journal of Water Process Engineering, 2020, vol. 38, p. 101608
2214-7144
http://uvadoc.uva.es/handle/10324/46539
10.1016/j.jwpe.2020.101608
101608
Journal of Water Process Engineering
38
Purple phototrophic bacteria (PPB) represent an innovative approach for wastewater treatment with a high metabolic plasticity, able to grow under aerobic and anaerobic conditions. This study comparatively assessed the long-term performance (450 days of operation) of an open and closed PPB-based photobioreactor treating of piggery wastewater (PWW). The influence of wastewater dilution, illuminated area to volume ratio, biomass settling and recirculation, and infrared light intensity on wastewater treatment was evaluated at 7 days of hydraulic retention time. An increase in PWW dilution from 4 to 8 folds did not entail higher TOC removal efficiencies (REs) in the open photobioreactor (87% versus 89%), but a significant increase in the closed photobioreactor (from 73% to 80%). The increase in the illuminated area to volume ratio increased TN-REs up to 99% and 49% in the open and closed photobioreactor, respectively, with a concomitant increase in the temperature of both systems. However, temperature control did not mediate a significant enhancement in PWW treatment. Biomass settling and recirculation resulted in higher TN-REs (80%) and TOC-REs (90%) in the closed photobioreactor. The increase in infrared radiation from 100 to 300 W m-2 fostered PPB growth. High water evaporation losses (deteriorating effluent quality) were recorded in the open photobioreactor, where carbon dioxide and ammonia stripping were identified as the main pathways supporting carbon and nitrogen removal.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Comparative evaluation of continuous piggery wastewater treatment in open and closed purple phototrophic bacteria-based photobioreactors
info:eu-repo/semantics/article
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b3IgaW5jdW1wbGltaWVudG8gZGUgY3VhbHF1aWVyYSBkZSBsYXMgb2JsaWdhY2lvbmVzIGRlcml2YWRhcyBkZWwgQWN1ZXJkbywgcG9yIHZvbHVudGFkIGV4cHJlc2EgZGVsIEF1dG9yCkVuICBwcnVlYmEgZGUgY29uZm9ybWlkYWQsIGxhcyBwYXJ0ZXMgYWNlcHRhbiBlbCBwcmVzZW50ZSBBY3VlcmRvCgoKCgo=
URL
https://uvadoc.uva.es/bitstream/10324/46539/1/Comparative-evaluation-continuous-piggery-wastewater.pdf
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Comparative-evaluation-continuous-piggery-wastewater.pdf