A novel microbial consortium from sheep compost for decolorization and degradation of Congo red
Congo red is a synthetic azo-dye dye with many industrial applications. The effluents containing azo dyes are causing several environmental hazards and thus should be treated prior to their discharge. The present work investigates the possible use of a novel microbial consortium from sheep compost f...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
GJESM Publisher
2019-01-01
|
| Series: | Global Journal of Environmental Science and Management |
| Subjects: | |
| Online Access: | https://www.gjesm.net/article_33716_916f9f4ee286ecf83b57c8e25e56b9f0.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832569797006589952 |
|---|---|
| author | Sh.F. Abd El-Kader G.A. El-Chaghaby G.M. Khalafalla R.I. Refae H.M. Elshishtawy |
| author_facet | Sh.F. Abd El-Kader G.A. El-Chaghaby G.M. Khalafalla R.I. Refae H.M. Elshishtawy |
| author_sort | Sh.F. Abd El-Kader |
| collection | DOAJ |
| description | Congo red is a synthetic azo-dye dye with many industrial applications. The effluents containing azo dyes are causing several environmental hazards and thus should be treated prior to their discharge. The present work investigates the possible use of a novel microbial consortium from sheep compost for the decolorization of Congo red dye. The effect of different parameters including contact time, dye concentration and inoculum concentration on dye decolorization were investigated. The kinetic of dye decolorization was also assessed and the biodegradation of the dye was confirmed by different techniques. The results showed that the microbial consortium decolorized about 98% of Congo red (500 mg/L) after 24h. The efficiency of the decolorization decreased from 95% to 62% when the dye concentration increased from 100 to 500mg/L. Also, it was noticed that 75% of Congo red (25 mg/L) was decolorized at an inoculum rate of 2.5%. The kinetic results suggested that the decolorization of Congo red by the studied consortium follows the first order kinetic model. Also the maximum substrate consumption rate (V<sub>max</sub>) according to Michaelis- Menten model was found to be 19.30 mg/h/L and the decolorization rate constant (K<sub>m</sub>) was 116.93 mg/L. The biodegradation of Congo red was further confirmed by HPLC and GC-Ms analysis which revealed the presence of some spectral differences between the untreated dye sample and the treated one. In conclusion, the results of the present work suggest that microbial consortium from sheep compost could have potential application for bioremediation of industrial effluents containing Congo red dye. |
| format | Article |
| id | doaj-art-585946deb2844388ba9d28ebbbc91038 |
| institution | Kabale University |
| issn | 2383-3572 2383-3866 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | GJESM Publisher |
| record_format | Article |
| series | Global Journal of Environmental Science and Management |
| spelling | doaj-art-585946deb2844388ba9d28ebbbc910382025-02-02T19:42:55ZengGJESM PublisherGlobal Journal of Environmental Science and Management2383-35722383-38662019-01-0151617010.22034/gjesm.2019.01.0533716A novel microbial consortium from sheep compost for decolorization and degradation of Congo redSh.F. Abd El-Kader0G.A. El-Chaghaby1G.M. Khalafalla2R.I. Refae3H.M. Elshishtawy4Regional Center for Food and Feed, Agricultural Research Center, Cairo, EgyptRegional Center for Food and Feed, Agricultural Research Center, Cairo, EgyptMicrobiology Department, Faculty of Agriculture, Cairo University, Cairo, EgyptMicrobiology Department, Faculty of Agriculture, Cairo University, Cairo, EgyptAgricultural Genetic Engineering Research Institute, Agricultural Research Center, Cairo, EgyptCongo red is a synthetic azo-dye dye with many industrial applications. The effluents containing azo dyes are causing several environmental hazards and thus should be treated prior to their discharge. The present work investigates the possible use of a novel microbial consortium from sheep compost for the decolorization of Congo red dye. The effect of different parameters including contact time, dye concentration and inoculum concentration on dye decolorization were investigated. The kinetic of dye decolorization was also assessed and the biodegradation of the dye was confirmed by different techniques. The results showed that the microbial consortium decolorized about 98% of Congo red (500 mg/L) after 24h. The efficiency of the decolorization decreased from 95% to 62% when the dye concentration increased from 100 to 500mg/L. Also, it was noticed that 75% of Congo red (25 mg/L) was decolorized at an inoculum rate of 2.5%. The kinetic results suggested that the decolorization of Congo red by the studied consortium follows the first order kinetic model. Also the maximum substrate consumption rate (V<sub>max</sub>) according to Michaelis- Menten model was found to be 19.30 mg/h/L and the decolorization rate constant (K<sub>m</sub>) was 116.93 mg/L. The biodegradation of Congo red was further confirmed by HPLC and GC-Ms analysis which revealed the presence of some spectral differences between the untreated dye sample and the treated one. In conclusion, the results of the present work suggest that microbial consortium from sheep compost could have potential application for bioremediation of industrial effluents containing Congo red dye.https://www.gjesm.net/article_33716_916f9f4ee286ecf83b57c8e25e56b9f0.pdfAzo dyesBiodecolorizationBiodegradationCongo red (CR)Kinetics |
| spellingShingle | Sh.F. Abd El-Kader G.A. El-Chaghaby G.M. Khalafalla R.I. Refae H.M. Elshishtawy A novel microbial consortium from sheep compost for decolorization and degradation of Congo red Global Journal of Environmental Science and Management Azo dyes Biodecolorization Biodegradation Congo red (CR) Kinetics |
| title | A novel microbial consortium from sheep compost for decolorization and degradation of Congo red |
| title_full | A novel microbial consortium from sheep compost for decolorization and degradation of Congo red |
| title_fullStr | A novel microbial consortium from sheep compost for decolorization and degradation of Congo red |
| title_full_unstemmed | A novel microbial consortium from sheep compost for decolorization and degradation of Congo red |
| title_short | A novel microbial consortium from sheep compost for decolorization and degradation of Congo red |
| title_sort | novel microbial consortium from sheep compost for decolorization and degradation of congo red |
| topic | Azo dyes Biodecolorization Biodegradation Congo red (CR) Kinetics |
| url | https://www.gjesm.net/article_33716_916f9f4ee286ecf83b57c8e25e56b9f0.pdf |
| work_keys_str_mv | AT shfabdelkader anovelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT gaelchaghaby anovelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT gmkhalafalla anovelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT rirefae anovelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT hmelshishtawy anovelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT shfabdelkader novelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT gaelchaghaby novelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT gmkhalafalla novelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT rirefae novelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored AT hmelshishtawy novelmicrobialconsortiumfromsheepcompostfordecolorizationanddegradationofcongored |