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Decolorization of Biogas Power Plant Effluent by Phanerochaete chrysosporium TBRC 785 |
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| รหัสดีโอไอ | |
| Creator | 1. Ponruedee Kumkaew 2. Pitchaya Suaisom 3. Kanokwan Mukkata 4. Saoharit Nitayavardhana |
| Title | Decolorization of Biogas Power Plant Effluent by Phanerochaete chrysosporium TBRC 785 |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2566 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 16 |
| Journal No. | 2 |
| Page no. | 76-86 |
| Keyword | Biogas power plant effluent, Fungal decolorization, Bioremediation, MelanoidinWhite-rot fungus |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | The biogas power plant effluent has a dark brown color and exceeding Thailand's standardfor effluent discharged from factories. Direct discharges into public water resources orthe environment are not permitted. The aim of this study was to reduce the color andorganic substances of biogas effluent from covered lagoon of distillery cane molasseswastewater using Phanerochaete chrysosporium. It was found that decolorizationefficiency was not related to fungal growth and it could be efficiently performed in thebiogas effluent concentration of 10 - 75% v/v to obtain 26.88 - 32.58% of decolorization.Organic removal during fungal cultivation was however dependent on biogas effluentconcentration and the optimal value was 25% v/v. Because the biogas effluent samplecontained a good balance nutrient for fungal cultivation (C:N of 10:1 measured asSCOD:TKN), nutrient supplementation especially phosphorus to maintain SCOD:N:Pof 100:10:1 did not significantly improve fungal decolorization and organic removalefficiency. For efficient fungal remediation, 25% v/v (~6,912 - 7,818 mgSCOD/L) biogaseffluent was further used in bioreactor study to investigate the suitable aeration rateof the process. Within 7 days, the aeration rate of 1.0 volumeair/ volumeliquid/min (vvm)provided the best fungal remediation efficiency of 36.16 ? 2.93% and 43.15 ? 2.79%for decolorization and organic removal, respectively. Consequently, integration offungal cultivation process could be a promising approach for waste remediation for thebiogas power plant using distillery slop as a substrate as it requires minimal operations/processes in existing biogas power plants. Moreover, direct fungal spore inoculationinto the biogas effluent could substantially reduce cost and time during the process. |
