Removal of crystal violet from aqueous solutions using an aerobic granular sludge system
The paper presents a set of comparative tests to evaluate the inhibitory effect of crystal violet on the respiration rate of microorganisms in conventional activated sludge and aerobic granular sludge. The tests were performed in similar conditions with the only variable of the type of sludge tested...
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| Format: | Article |
| Language: | English |
| Published: |
Estfalia
2021-06-01
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| Series: | Romanian Journal of Ecology & Environmental Chemistry |
| Subjects: | |
| Online Access: | http://www.rjeec.ro/Read/113?id=Removal%20of%20crystal%20violet%20from%20aqueous%20solutions%20using%20an%20aerobic%20granular%20sludge%20system |
| _version_ | 1797626856347795456 |
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| author | Costel Bumbac Elena Elisabeta Manea Olga Tiron |
| author_facet | Costel Bumbac Elena Elisabeta Manea Olga Tiron |
| author_sort | Costel Bumbac |
| collection | DOAJ |
| description | The paper presents a set of comparative tests to evaluate the inhibitory effect of crystal violet on the respiration rate of microorganisms in conventional activated sludge and aerobic granular sludge. The tests were performed in similar conditions with the only variable of the type of sludge tested. The results emphasized that the aerobic granular sludge is less susceptible to the toxicity induced by crystal violet. The concentration of crystal violet that inhibits by 50% (CE50) the respiration rate of sludge microorganisms was determined to be, for the specific test conditions, 22.39 mg/L for the conventional activated sludge and 33.88 mg/L for the aerobic granular sludge. The paper also assesses the biodegradability potential of crystal violet from aqueous solution, in the presence of sodium acetate as co-substrate in a lab-scale sequential biological reactor with aerobic granular sludge. The experiments showed that most of the crystal violet is being initially absorbed in the matrix of the granules during the first minutes and subsequently is being removed with efficiencies above 95% within a treatment cycle of 8 hours. |
| first_indexed | 2024-03-11T10:16:09Z |
| format | Article |
| id | doaj.art-d12febf35ad043a3967abc393f5be661 |
| institution | Directory Open Access Journal |
| issn | 2668-5418 2668-8530 |
| language | English |
| last_indexed | 2024-03-11T10:16:09Z |
| publishDate | 2021-06-01 |
| publisher | Estfalia |
| record_format | Article |
| series | Romanian Journal of Ecology & Environmental Chemistry |
| spelling | doaj.art-d12febf35ad043a3967abc393f5be6612023-11-16T07:34:19ZengEstfaliaRomanian Journal of Ecology & Environmental Chemistry2668-54182668-85302021-06-01315560https://doi.org/10.21698/rjeec.2021.107Removal of crystal violet from aqueous solutions using an aerobic granular sludge systemCostel Bumbac0https://orcid.org/0000-0001-8470-0634Elena Elisabeta Manea1Olga Tiron2https://orcid.org/0000-0001-9810-4999National Research and Development Institute for Industrial Ecology ECOINDNational Research and Development Institute for Industrial Ecology ECOINDNational Research and Development Institute for Industrial Ecology ECOINDThe paper presents a set of comparative tests to evaluate the inhibitory effect of crystal violet on the respiration rate of microorganisms in conventional activated sludge and aerobic granular sludge. The tests were performed in similar conditions with the only variable of the type of sludge tested. The results emphasized that the aerobic granular sludge is less susceptible to the toxicity induced by crystal violet. The concentration of crystal violet that inhibits by 50% (CE50) the respiration rate of sludge microorganisms was determined to be, for the specific test conditions, 22.39 mg/L for the conventional activated sludge and 33.88 mg/L for the aerobic granular sludge. The paper also assesses the biodegradability potential of crystal violet from aqueous solution, in the presence of sodium acetate as co-substrate in a lab-scale sequential biological reactor with aerobic granular sludge. The experiments showed that most of the crystal violet is being initially absorbed in the matrix of the granules during the first minutes and subsequently is being removed with efficiencies above 95% within a treatment cycle of 8 hours.http://www.rjeec.ro/Read/113?id=Removal%20of%20crystal%20violet%20from%20aqueous%20solutions%20using%20an%20aerobic%20granular%20sludge%20systemaerobic granular sludgecristal violetwastewater treatmentinhibition test |
| spellingShingle | Costel Bumbac Elena Elisabeta Manea Olga Tiron Removal of crystal violet from aqueous solutions using an aerobic granular sludge system Romanian Journal of Ecology & Environmental Chemistry aerobic granular sludge cristal violet wastewater treatment inhibition test |
| title | Removal of crystal violet from aqueous solutions using an aerobic granular sludge system |
| title_full | Removal of crystal violet from aqueous solutions using an aerobic granular sludge system |
| title_fullStr | Removal of crystal violet from aqueous solutions using an aerobic granular sludge system |
| title_full_unstemmed | Removal of crystal violet from aqueous solutions using an aerobic granular sludge system |
| title_short | Removal of crystal violet from aqueous solutions using an aerobic granular sludge system |
| title_sort | removal of crystal violet from aqueous solutions using an aerobic granular sludge system |
| topic | aerobic granular sludge cristal violet wastewater treatment inhibition test |
| url | http://www.rjeec.ro/Read/113?id=Removal%20of%20crystal%20violet%20from%20aqueous%20solutions%20using%20an%20aerobic%20granular%20sludge%20system |
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