Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production
The aromatic and dark-colored spearmint essential oil wastewater (SEOW) generally contains a large amount of organic matter, including chemical oxygen demand (COD), phenolic compounds, and inorganic contents. In this study, the pollutant removal performance and biogas production rate of an up-flow a...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Materials and Energy Research Center (MERC)
2019-04-01
|
| Series: | Journal of Renewable Energy and Environment |
| Subjects: | |
| Online Access: | https://www.jree.ir/article_95564_44e4c9345cd7506d3103324fd0a467d4.pdf |
| _version_ | 1827911581447487488 |
|---|---|
| author | Bahman Heydari Shahin Rafiee Elham Abdollahzadeh Sharghi Seyed Saeid Mohtasebi |
| author_facet | Bahman Heydari Shahin Rafiee Elham Abdollahzadeh Sharghi Seyed Saeid Mohtasebi |
| author_sort | Bahman Heydari |
| collection | DOAJ |
| description | The aromatic and dark-colored spearmint essential oil wastewater (SEOW) generally contains a large amount of organic matter, including chemical oxygen demand (COD), phenolic compounds, and inorganic contents. In this study, the pollutant removal performance and biogas production rate of an up-flow anaerobic sludge blanket (UASB) reactor used for the treatment of SEOW were investigated. During the 102 days UASB operation at hydraulic retention time of 60 hours, the organic loading rate (OLR) was increased from 0.14 to 2.69 kg COD/m3.d by increasing the influent SEOW concentration. With increasing OLR from 0.14 to 2.69 kg COD/m3.d, the concentrations of COD and phenol in the influent of the UASB reactor increased to 6720±383 mg/L and 383±88 mg/L, respectively. At OLR equal to 2.69 kg COD/m3.d, the steady-state average removal efficiencies of COD and phenol were 72.0±1.4 and 63.1±6.7 %, respectively. The stability of the anaerobic system was confirmed by the average steady-state ratios of the volatile fatty acid/alkalinity and pH in the UASB reactor, which were less than 0.4 and 7.5±0.1, respectively, at different OLRs. The optimum OLR was found to be 2.69 kg COD/m3.d, where 26.9±1.7 L/d production of biogas containing 63.0±5.2 % and 22.4±4.2 % methane and carbon dioxide, respectively, was obtained. Moreover, at OLR equal to 2.69 kg COD/m3.d, the biogas yield and net heating value were 462.2±46.9 L/kg CODremoved and 24.7±5.2 MJ/m3, respectively. The results of the current study reveal the substantial potential of the UASB reactor in terms of pollutant removal performance and biogas production for the treatment of SEOW. |
| first_indexed | 2024-03-13T02:05:10Z |
| format | Article |
| id | doaj.art-582d64519dfb4627a8e0a6841c6c8a0b |
| institution | Directory Open Access Journal |
| issn | 2423-5547 2423-7469 |
| language | English |
| last_indexed | 2024-03-13T02:05:10Z |
| publishDate | 2019-04-01 |
| publisher | Materials and Energy Research Center (MERC) |
| record_format | Article |
| series | Journal of Renewable Energy and Environment |
| spelling | doaj.art-582d64519dfb4627a8e0a6841c6c8a0b2023-07-01T09:08:03ZengMaterials and Energy Research Center (MERC)Journal of Renewable Energy and Environment2423-55472423-74692019-04-01621710.30501/jree.2019.9556495564Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas ProductionBahman Heydari0Shahin Rafiee1Elham Abdollahzadeh Sharghi2Seyed Saeid Mohtasebi3Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.Environmental Group, Department of Energy, Materials and Energy Research Center (MERC), MeshkinDasht, Alborz, Iran.Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.The aromatic and dark-colored spearmint essential oil wastewater (SEOW) generally contains a large amount of organic matter, including chemical oxygen demand (COD), phenolic compounds, and inorganic contents. In this study, the pollutant removal performance and biogas production rate of an up-flow anaerobic sludge blanket (UASB) reactor used for the treatment of SEOW were investigated. During the 102 days UASB operation at hydraulic retention time of 60 hours, the organic loading rate (OLR) was increased from 0.14 to 2.69 kg COD/m3.d by increasing the influent SEOW concentration. With increasing OLR from 0.14 to 2.69 kg COD/m3.d, the concentrations of COD and phenol in the influent of the UASB reactor increased to 6720±383 mg/L and 383±88 mg/L, respectively. At OLR equal to 2.69 kg COD/m3.d, the steady-state average removal efficiencies of COD and phenol were 72.0±1.4 and 63.1±6.7 %, respectively. The stability of the anaerobic system was confirmed by the average steady-state ratios of the volatile fatty acid/alkalinity and pH in the UASB reactor, which were less than 0.4 and 7.5±0.1, respectively, at different OLRs. The optimum OLR was found to be 2.69 kg COD/m3.d, where 26.9±1.7 L/d production of biogas containing 63.0±5.2 % and 22.4±4.2 % methane and carbon dioxide, respectively, was obtained. Moreover, at OLR equal to 2.69 kg COD/m3.d, the biogas yield and net heating value were 462.2±46.9 L/kg CODremoved and 24.7±5.2 MJ/m3, respectively. The results of the current study reveal the substantial potential of the UASB reactor in terms of pollutant removal performance and biogas production for the treatment of SEOW.https://www.jree.ir/article_95564_44e4c9345cd7506d3103324fd0a467d4.pdfspearmint essential oil wastewater (seow)up-flow anaerobic sludge blanket (uasb)biogasphenolchemical oxygen demand (cod) |
| spellingShingle | Bahman Heydari Shahin Rafiee Elham Abdollahzadeh Sharghi Seyed Saeid Mohtasebi Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production Journal of Renewable Energy and Environment spearmint essential oil wastewater (seow) up-flow anaerobic sludge blanket (uasb) biogas phenol chemical oxygen demand (cod) |
| title | Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production |
| title_full | Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production |
| title_fullStr | Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production |
| title_full_unstemmed | Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production |
| title_short | Considering an Up-Flow Anaerobic Sludge Blanket for the Treatment of Spearmint Essential Oil Wastewater and Biogas Production |
| title_sort | considering an up flow anaerobic sludge blanket for the treatment of spearmint essential oil wastewater and biogas production |
| topic | spearmint essential oil wastewater (seow) up-flow anaerobic sludge blanket (uasb) biogas phenol chemical oxygen demand (cod) |
| url | https://www.jree.ir/article_95564_44e4c9345cd7506d3103324fd0a467d4.pdf |
| work_keys_str_mv | AT bahmanheydari consideringanupflowanaerobicsludgeblanketforthetreatmentofspearmintessentialoilwastewaterandbiogasproduction AT shahinrafiee consideringanupflowanaerobicsludgeblanketforthetreatmentofspearmintessentialoilwastewaterandbiogasproduction AT elhamabdollahzadehsharghi consideringanupflowanaerobicsludgeblanketforthetreatmentofspearmintessentialoilwastewaterandbiogasproduction AT seyedsaeidmohtasebi consideringanupflowanaerobicsludgeblanketforthetreatmentofspearmintessentialoilwastewaterandbiogasproduction |