Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas
The solubilization potential of biological pre-treatment for waste activated sludge (WAS) is limited due to the floc structure of the WAS. Extra polymeric substances (EPS) are responsible for floc formation. In this investigation, an attempt has been made to disturb the floc structure of WAS by remo...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-12-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fenrg.2019.00136/full |
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| author | D. P. Rufus J. Rajesh Banu R. Yukesh Kannah Dinh Duc Nguyen Dinh Duc Nguyen Gopalakrishnan Kumar Soon Woong Chang S. Antony Raja |
| author_facet | D. P. Rufus J. Rajesh Banu R. Yukesh Kannah Dinh Duc Nguyen Dinh Duc Nguyen Gopalakrishnan Kumar Soon Woong Chang S. Antony Raja |
| author_sort | D. P. Rufus |
| collection | DOAJ |
| description | The solubilization potential of biological pre-treatment for waste activated sludge (WAS) is limited due to the floc structure of the WAS. Extra polymeric substances (EPS) are responsible for floc formation. In this investigation, an attempt has been made to disturb the floc structure of WAS by removing EPS with a disperser. In the first stage, the disperser treatment released 242 mg/L of soluble EPS when operated at 3,000 rpm for a duration of 50 s and caused deflocculation of WAS. In the second stage, deflocculated sludge was subjected to bacterial pre-treatment to assess the effect of floc disruption. During bacterial pre-treatment, it was found that deflocculated sludge produced higher organic solubilization of 23.9% and a reduction in suspended solids of 19.1% when compared to control (10.2 and 8.7%, respectively). Biogas yields were recorded of 220 mL/g COD in deflocculated sludge and 93 mL/g COD in flocculated sludge. From the above, it is evident that deflocculation effectively enhanced bacterial pre-treatment, leading to more solubilization and biogas production. |
| first_indexed | 2024-12-11T05:17:37Z |
| format | Article |
| id | doaj.art-390bc81a4d9742c6978c72d35949f323 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-12-11T05:17:37Z |
| publishDate | 2019-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-390bc81a4d9742c6978c72d35949f3232022-12-22T01:19:46ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2019-12-01710.3389/fenrg.2019.00136490738Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of BiogasD. P. Rufus0J. Rajesh Banu1R. Yukesh Kannah2Dinh Duc Nguyen3Dinh Duc Nguyen4Gopalakrishnan Kumar5Soon Woong Chang6S. Antony Raja7Department of Mechanical Engineering, Karunya Institute of Technology and Sciences, Coimbatore, IndiaDepartment of Civil Engineering, Anna University Regional Campus Tirunelveli, Tirunelveli, IndiaDepartment of Civil Engineering, Anna University Regional Campus Tirunelveli, Tirunelveli, IndiaInstitute of Research and Development, Duy Tan University, Da Nang, VietnamDepartment of Environmental Energy Engineering, Kyonggi University, Suwon, South KoreaFaculty of Science and Technology, Institute of Chemistry, Bioscience, and Environmental Engineering, University of Stavanger, Stavanger, NorwayDepartment of Environmental Energy Engineering, Kyonggi University, Suwon, South KoreaDepartment of Mechanical Engineering, Karunya Institute of Technology and Sciences, Coimbatore, IndiaThe solubilization potential of biological pre-treatment for waste activated sludge (WAS) is limited due to the floc structure of the WAS. Extra polymeric substances (EPS) are responsible for floc formation. In this investigation, an attempt has been made to disturb the floc structure of WAS by removing EPS with a disperser. In the first stage, the disperser treatment released 242 mg/L of soluble EPS when operated at 3,000 rpm for a duration of 50 s and caused deflocculation of WAS. In the second stage, deflocculated sludge was subjected to bacterial pre-treatment to assess the effect of floc disruption. During bacterial pre-treatment, it was found that deflocculated sludge produced higher organic solubilization of 23.9% and a reduction in suspended solids of 19.1% when compared to control (10.2 and 8.7%, respectively). Biogas yields were recorded of 220 mL/g COD in deflocculated sludge and 93 mL/g COD in flocculated sludge. From the above, it is evident that deflocculation effectively enhanced bacterial pre-treatment, leading to more solubilization and biogas production.https://www.frontiersin.org/article/10.3389/fenrg.2019.00136/fulldeflocculationanaerobic biodegradabilitydisperser treatmentcell disintegrationbiogas |
| spellingShingle | D. P. Rufus J. Rajesh Banu R. Yukesh Kannah Dinh Duc Nguyen Dinh Duc Nguyen Gopalakrishnan Kumar Soon Woong Chang S. Antony Raja Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas Frontiers in Energy Research deflocculation anaerobic biodegradability disperser treatment cell disintegration biogas |
| title | Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas |
| title_full | Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas |
| title_fullStr | Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas |
| title_full_unstemmed | Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas |
| title_short | Effect of Dispersion Treatment on Dairy Waste Activated Sludge to Hasten the Production of Biogas |
| title_sort | effect of dispersion treatment on dairy waste activated sludge to hasten the production of biogas |
| topic | deflocculation anaerobic biodegradability disperser treatment cell disintegration biogas |
| url | https://www.frontiersin.org/article/10.3389/fenrg.2019.00136/full |
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