Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment
Anaerobic treatment processes have achieved popularity in treating palm oil mill effluent due to its high treatability and biogas generation. The use of externally submerged membranes with anaerobic reactors promotes the retention of the biomass in the reactor. This study was conducted in thermophil...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/9/4/55 |
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| author | Thet Lei Yee Thusitha Rathnayake Chettiyappan Visvanathan |
| author_facet | Thet Lei Yee Thusitha Rathnayake Chettiyappan Visvanathan |
| author_sort | Thet Lei Yee |
| collection | DOAJ |
| description | Anaerobic treatment processes have achieved popularity in treating palm oil mill effluent due to its high treatability and biogas generation. The use of externally submerged membranes with anaerobic reactors promotes the retention of the biomass in the reactor. This study was conducted in thermophilic conditions with the Polytetrafluoroethylene hollow fiber (PTFE-HF) membrane which was operated at 55 °C. The reactor was operated at Organic Loading Rates (OLR) of 2, 3, 4, 6, 8, and 10 kg Chemical Oxygen Demand (COD)/m<sup>3</sup>·d to investigate the treatment performance and the membrane operation. The efficiency of the COD removal achieved by the system was between 93–98%. The highest methane yield achieved was 0.56 m<sup>3</sup> CH<sub>4</sub>/kg COD<sub>r</sub>. The reactor mixed liquor volatile suspended solids (MLVSS) was maintained between 11.1 g/L to 20.9 g/L. A dead-end mode PTFE hollow fiber microfiltration was operated with the constant flux of 3 LMH (L/m<sup>2</sup>·h) in permeate recirculation mode to separate the clear final effluent and retain the biomass in the reactor. Membrane fouling was one of the limiting factors in the membrane bioreactor application. In this study, organic fouling was observed to be 93% of the total membrane fouling. |
| first_indexed | 2024-03-12T07:53:40Z |
| format | Article |
| id | doaj.art-2b9c97ecb3a54edf9ea14d8de50e4d5b |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-12T07:53:40Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-2b9c97ecb3a54edf9ea14d8de50e4d5b2023-09-02T20:23:33ZengMDPI AGMembranes2077-03752019-04-01945510.3390/membranes9040055membranes9040055Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater TreatmentThet Lei Yee0Thusitha Rathnayake1Chettiyappan Visvanathan2Department of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Khlong Luang, Pathumthani 12120, ThailandDepartment of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Khlong Luang, Pathumthani 12120, ThailandDepartment of Energy, Environment and Climate Change, School of Environment, Resources and Development, Asian Institute of Technology, P.O. Box 4, Khlong Luang, Pathumthani 12120, ThailandAnaerobic treatment processes have achieved popularity in treating palm oil mill effluent due to its high treatability and biogas generation. The use of externally submerged membranes with anaerobic reactors promotes the retention of the biomass in the reactor. This study was conducted in thermophilic conditions with the Polytetrafluoroethylene hollow fiber (PTFE-HF) membrane which was operated at 55 °C. The reactor was operated at Organic Loading Rates (OLR) of 2, 3, 4, 6, 8, and 10 kg Chemical Oxygen Demand (COD)/m<sup>3</sup>·d to investigate the treatment performance and the membrane operation. The efficiency of the COD removal achieved by the system was between 93–98%. The highest methane yield achieved was 0.56 m<sup>3</sup> CH<sub>4</sub>/kg COD<sub>r</sub>. The reactor mixed liquor volatile suspended solids (MLVSS) was maintained between 11.1 g/L to 20.9 g/L. A dead-end mode PTFE hollow fiber microfiltration was operated with the constant flux of 3 LMH (L/m<sup>2</sup>·h) in permeate recirculation mode to separate the clear final effluent and retain the biomass in the reactor. Membrane fouling was one of the limiting factors in the membrane bioreactor application. In this study, organic fouling was observed to be 93% of the total membrane fouling.https://www.mdpi.com/2077-0375/9/4/55anaerobic membrane bioreactorpalm oil mill effluentfoulingorganic loading ratemicrofiltrationthermophilic |
| spellingShingle | Thet Lei Yee Thusitha Rathnayake Chettiyappan Visvanathan Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment Membranes anaerobic membrane bioreactor palm oil mill effluent fouling organic loading rate microfiltration thermophilic |
| title | Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment |
| title_full | Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment |
| title_fullStr | Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment |
| title_full_unstemmed | Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment |
| title_short | Performance Evaluation of a Thermophilic Anaerobic Membrane Bioreactor for Palm Oil Wastewater Treatment |
| title_sort | performance evaluation of a thermophilic anaerobic membrane bioreactor for palm oil wastewater treatment |
| topic | anaerobic membrane bioreactor palm oil mill effluent fouling organic loading rate microfiltration thermophilic |
| url | https://www.mdpi.com/2077-0375/9/4/55 |
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