Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment
Insulating oil contaminated with polychlorinated biphenyls (PCBs) is an environmentally important pollutant. This research focused on the establishment of the optimum conditions under which photocatalytic oxidation can be used together with biotreatment using the <i>Nostoc</i> sp. microo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Toxics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2305-6304/10/5/209 |
| _version_ | 1797495027389169664 |
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| author | Andrés F. Suárez Carlos E. Camargo Miguel A. Esteso Carmen M. Romero |
| author_facet | Andrés F. Suárez Carlos E. Camargo Miguel A. Esteso Carmen M. Romero |
| author_sort | Andrés F. Suárez |
| collection | DOAJ |
| description | Insulating oil contaminated with polychlorinated biphenyls (PCBs) is an environmentally important pollutant. This research focused on the establishment of the optimum conditions under which photocatalytic oxidation can be used together with biotreatment using the <i>Nostoc</i> sp. microorganism to degrade PCBs present in used dielectric oils. Among the optimal conditions studied were PCB concentration, initial pH, and titanium dioxide (TiO<sub>2</sub>) concentration for the photocatalytic step, and PCB concentration and photoperiod for the biotreatment step. The results indicate that the optimal conditions necessary for photocatalytic degradation were a pH of 6.10, 113 mg/L TiO<sub>2</sub>, and 765 mg/L PCBs, achieving close to 90% removal. For the biotreatment step, the results showed that PCBs progressively inhibited the microbiological growth, with the lowest cellular growth observed in the medium with the highest PCB concentration. |
| first_indexed | 2024-03-10T01:42:38Z |
| format | Article |
| id | doaj.art-c803522964374253899f82c1afaa2623 |
| institution | Directory Open Access Journal |
| issn | 2305-6304 |
| language | English |
| last_indexed | 2024-03-10T01:42:38Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxics |
| spelling | doaj.art-c803522964374253899f82c1afaa26232023-11-23T13:21:11ZengMDPI AGToxics2305-63042022-04-0110520910.3390/toxics10050209Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae TreatmentAndrés F. Suárez0Carlos E. Camargo1Miguel A. Esteso2Carmen M. Romero3Departamento de Ingenieria, Universidad de Bogota Jorge Tadeo Lozano, Bogotá 111711, ColombiaDepartamento de Quimica, Universidad Nacional de Colombia, Bogotá 111321, ColombiaUniversidad Catolica de Avila, Calle los Canteros s/n, 05005 Ávila, SpainDepartamento de Quimica, Universidad Nacional de Colombia, Bogotá 111321, ColombiaInsulating oil contaminated with polychlorinated biphenyls (PCBs) is an environmentally important pollutant. This research focused on the establishment of the optimum conditions under which photocatalytic oxidation can be used together with biotreatment using the <i>Nostoc</i> sp. microorganism to degrade PCBs present in used dielectric oils. Among the optimal conditions studied were PCB concentration, initial pH, and titanium dioxide (TiO<sub>2</sub>) concentration for the photocatalytic step, and PCB concentration and photoperiod for the biotreatment step. The results indicate that the optimal conditions necessary for photocatalytic degradation were a pH of 6.10, 113 mg/L TiO<sub>2</sub>, and 765 mg/L PCBs, achieving close to 90% removal. For the biotreatment step, the results showed that PCBs progressively inhibited the microbiological growth, with the lowest cellular growth observed in the medium with the highest PCB concentration.https://www.mdpi.com/2305-6304/10/5/209polychlorinated biphenylspollutantsphotocatalytic oxidationbiotreatment<i>Nostoc</i> sp. microorganism |
| spellingShingle | Andrés F. Suárez Carlos E. Camargo Miguel A. Esteso Carmen M. Romero Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment Toxics polychlorinated biphenyls pollutants photocatalytic oxidation biotreatment <i>Nostoc</i> sp. microorganism |
| title | Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment |
| title_full | Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment |
| title_fullStr | Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment |
| title_full_unstemmed | Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment |
| title_short | Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment |
| title_sort | photocatalytic degradation of dielectric mineral oil with pcbs content coupled with algae treatment |
| topic | polychlorinated biphenyls pollutants photocatalytic oxidation biotreatment <i>Nostoc</i> sp. microorganism |
| url | https://www.mdpi.com/2305-6304/10/5/209 |
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