Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent
A constant source of nutrient pollution that causes eutrophication is municipal wastewater treatment plant (WWTP) secondary effluent. This paper investigates the natural increase of pH, nutrient removal and biomass production from a cyclical re-cultivation system designed to favor the adaptation of...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398624001243 |
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| author | Julio C. Beltrán-Rocha Claudio Guajardo-Barbosa Icela D. Barceló-Quintal Gustavo Reyna-Martínez Edwin Fariz-Salinas Aldo Ramírez-Castillo Humberto Rodríguez-Fuentes Ulrico J. López-Chuken |
| author_facet | Julio C. Beltrán-Rocha Claudio Guajardo-Barbosa Icela D. Barceló-Quintal Gustavo Reyna-Martínez Edwin Fariz-Salinas Aldo Ramírez-Castillo Humberto Rodríguez-Fuentes Ulrico J. López-Chuken |
| author_sort | Julio C. Beltrán-Rocha |
| collection | DOAJ |
| description | A constant source of nutrient pollution that causes eutrophication is municipal wastewater treatment plant (WWTP) secondary effluent. This paper investigates the natural increase of pH, nutrient removal and biomass production from a cyclical re-cultivation system designed to favor the adaptation of microalgae consortia to WWTP secondary effluent. An outdoor experiment was performed with the microalgae consortia MC-10 under 3 sequential batch cycles. The natural pH increase (range 9–10) in the WWTP secondary effluent was established as an operation parameter because it certainly influenced microalgae biomass production (by maintenance and bioavailability of C and P), water treatment and pathogen removal. The increase of pH (9.7, 9.8 and 9.9) during the culture cycles of MC-10 probably generated conditions for fecal bacterial removal below detectable values (i.e., < 2 MPN/100 mL). The treatment of WWTP secondary effluent after batch cycles (cycles 1 to 3) using MC-10 indicated improvements in biomass productivity (66 to 167%) and a great potential for the reduction of total alkalinity (13.1 to 50.3%), NO3–-N (30.9 to 53.6%), PO43–- P (90.4 to 93.0%) and electrical conductivity (EC) (8.5 to 18.1%). Additionally, the harvested biomass showed a high mineral concentration (46.5%) suggesting its potential use as a bio-fertilizer. |
| format | Article |
| id | doaj-art-5ec0193b3e684ba29996b655366ec856 |
| institution | DOAJ |
| issn | 1944-3986 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-5ec0193b3e684ba29996b655366ec8562025-08-20T03:04:51ZengElsevierDesalination and Water Treatment1944-39862024-01-0131710010310.1016/j.dwt.2024.100103Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluentJulio C. Beltrán-Rocha0Claudio Guajardo-Barbosa1Icela D. Barceló-Quintal2Gustavo Reyna-Martínez3Edwin Fariz-Salinas4Aldo Ramírez-Castillo5Humberto Rodríguez-Fuentes6Ulrico J. López-Chuken7Facultad de Agronomía, Universidad Autónoma de Nuevo León, Nuevo León, MexicoFacultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Nuevo León, MexicoDivisión de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana, Ciudad de México, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Nuevo León, MexicoFacultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, Nuevo León, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Nuevo León, MexicoFacultad de Agronomía, Universidad Autónoma de Nuevo León, Nuevo León, MexicoFacultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Nuevo León, Mexico; Correspondence to: Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Av. Universidad S/N, Ciudad Universitaria, 66450 San Nicolás de los Garza, Nuevo León, Mexico.A constant source of nutrient pollution that causes eutrophication is municipal wastewater treatment plant (WWTP) secondary effluent. This paper investigates the natural increase of pH, nutrient removal and biomass production from a cyclical re-cultivation system designed to favor the adaptation of microalgae consortia to WWTP secondary effluent. An outdoor experiment was performed with the microalgae consortia MC-10 under 3 sequential batch cycles. The natural pH increase (range 9–10) in the WWTP secondary effluent was established as an operation parameter because it certainly influenced microalgae biomass production (by maintenance and bioavailability of C and P), water treatment and pathogen removal. The increase of pH (9.7, 9.8 and 9.9) during the culture cycles of MC-10 probably generated conditions for fecal bacterial removal below detectable values (i.e., < 2 MPN/100 mL). The treatment of WWTP secondary effluent after batch cycles (cycles 1 to 3) using MC-10 indicated improvements in biomass productivity (66 to 167%) and a great potential for the reduction of total alkalinity (13.1 to 50.3%), NO3–-N (30.9 to 53.6%), PO43–- P (90.4 to 93.0%) and electrical conductivity (EC) (8.5 to 18.1%). Additionally, the harvested biomass showed a high mineral concentration (46.5%) suggesting its potential use as a bio-fertilizer.http://www.sciencedirect.com/science/article/pii/S1944398624001243Sustainable processNutrient recyclingWastewater polishingSequential batch cultureMicroalgae adaptationMunicipal secondary effluent |
| spellingShingle | Julio C. Beltrán-Rocha Claudio Guajardo-Barbosa Icela D. Barceló-Quintal Gustavo Reyna-Martínez Edwin Fariz-Salinas Aldo Ramírez-Castillo Humberto Rodríguez-Fuentes Ulrico J. López-Chuken Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent Desalination and Water Treatment Sustainable process Nutrient recycling Wastewater polishing Sequential batch culture Microalgae adaptation Municipal secondary effluent |
| title | Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent |
| title_full | Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent |
| title_fullStr | Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent |
| title_full_unstemmed | Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent |
| title_short | Effect of natural increase of pH and microalgae cyclical re-cultivation on biomass production and polishing of municipal secondary effluent |
| title_sort | effect of natural increase of ph and microalgae cyclical re cultivation on biomass production and polishing of municipal secondary effluent |
| topic | Sustainable process Nutrient recycling Wastewater polishing Sequential batch culture Microalgae adaptation Municipal secondary effluent |
| url | http://www.sciencedirect.com/science/article/pii/S1944398624001243 |
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