Microalgae bioremediation and CO2 fixation of industrial wastewater
The present work evaluates the bioremediation potential of the microalgae Chlorella sp. cultivated in industrial wastewaters of a metallurgy facility for CO2 fixation. Its growth in wastewaters was investigated experimentally and growth rate was determined based on different dilutions. Taguchi'...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Cleaner Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666790822000714 |
| _version_ | 1818553981426728960 |
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| author | Cintia de Faria Ferreira Carraro Carla Cristina Almeida Loures Jose Adilson de Castro |
| author_facet | Cintia de Faria Ferreira Carraro Carla Cristina Almeida Loures Jose Adilson de Castro |
| author_sort | Cintia de Faria Ferreira Carraro |
| collection | DOAJ |
| description | The present work evaluates the bioremediation potential of the microalgae Chlorella sp. cultivated in industrial wastewaters of a metallurgy facility for CO2 fixation. Its growth in wastewaters was investigated experimentally and growth rate was determined based on different dilutions. Taguchi's experimental design was carried out and values found in laboratory were compared to those of a mathematical model adjusted based on growth rate. Process efficiency was evaluated to reduce organic load, nutrient consumption, and cell count during the initial and final stages via microscopy. After the biological treatment, reduction percentages of 99% for COD (Chemical Oxygen Demand) and 95% for SS (Sedimentable Solids) were achieved, in addition to 86% and 93% of nutrient and cyanide removal, respectively, and average CO2 biofixation of 0.1854 gL-1d-1.These values are close to those found in literature for other cultivation media. It was also observed that biomass productivity and CO2 fixation data are in agreement with those obtained in other studies, thus evidencing the efficiency of Chlorella sp. microalgae and its high photosynthetic capacity. |
| first_indexed | 2024-12-12T09:33:05Z |
| format | Article |
| id | doaj.art-9a322cd9c8834b3ca366216ef11b92a9 |
| institution | Directory Open Access Journal |
| issn | 2666-7908 |
| language | English |
| last_indexed | 2024-12-12T09:33:05Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cleaner Engineering and Technology |
| spelling | doaj.art-9a322cd9c8834b3ca366216ef11b92a92022-12-22T00:28:47ZengElsevierCleaner Engineering and Technology2666-79082022-06-018100466Microalgae bioremediation and CO2 fixation of industrial wastewaterCintia de Faria Ferreira Carraro0Carla Cristina Almeida Loures1Jose Adilson de Castro2Department of Electrical Engineering, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca - Campus Angra dos Reis, Angra dos Reis, Rio de Janeiro, Brazil; Corresponding author.Department of Mechanical Engineering, Centro Federal de Educação Tecnológica Celso Suckow da Fonseca - Campus Angra dos Reis, Angra dos Reis, Rio de Janeiro, BrazilDepartment of Metallurgical Engineering, Universidade Federal Fluminense (UFF), Volta Redonda, Rio de Janeiro, BrazilThe present work evaluates the bioremediation potential of the microalgae Chlorella sp. cultivated in industrial wastewaters of a metallurgy facility for CO2 fixation. Its growth in wastewaters was investigated experimentally and growth rate was determined based on different dilutions. Taguchi's experimental design was carried out and values found in laboratory were compared to those of a mathematical model adjusted based on growth rate. Process efficiency was evaluated to reduce organic load, nutrient consumption, and cell count during the initial and final stages via microscopy. After the biological treatment, reduction percentages of 99% for COD (Chemical Oxygen Demand) and 95% for SS (Sedimentable Solids) were achieved, in addition to 86% and 93% of nutrient and cyanide removal, respectively, and average CO2 biofixation of 0.1854 gL-1d-1.These values are close to those found in literature for other cultivation media. It was also observed that biomass productivity and CO2 fixation data are in agreement with those obtained in other studies, thus evidencing the efficiency of Chlorella sp. microalgae and its high photosynthetic capacity.http://www.sciencedirect.com/science/article/pii/S2666790822000714EffluentChlorella sp.BioremediationCO2 biofixation |
| spellingShingle | Cintia de Faria Ferreira Carraro Carla Cristina Almeida Loures Jose Adilson de Castro Microalgae bioremediation and CO2 fixation of industrial wastewater Cleaner Engineering and Technology Effluent Chlorella sp. Bioremediation CO2 biofixation |
| title | Microalgae bioremediation and CO2 fixation of industrial wastewater |
| title_full | Microalgae bioremediation and CO2 fixation of industrial wastewater |
| title_fullStr | Microalgae bioremediation and CO2 fixation of industrial wastewater |
| title_full_unstemmed | Microalgae bioremediation and CO2 fixation of industrial wastewater |
| title_short | Microalgae bioremediation and CO2 fixation of industrial wastewater |
| title_sort | microalgae bioremediation and co2 fixation of industrial wastewater |
| topic | Effluent Chlorella sp. Bioremediation CO2 biofixation |
| url | http://www.sciencedirect.com/science/article/pii/S2666790822000714 |
| work_keys_str_mv | AT cintiadefariaferreiracarraro microalgaebioremediationandco2fixationofindustrialwastewater AT carlacristinaalmeidaloures microalgaebioremediationandco2fixationofindustrialwastewater AT joseadilsondecastro microalgaebioremediationandco2fixationofindustrialwastewater |