Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture
The goal of this study was to evaluate the biodegradation of 1,4–dioxane using a mixed biological culture grown in textile wastewater sludge with 1,4–dioxane as the sole carbon source. The conditions for the long-term evaluation of 1,4–dioxane degradation were determined and optimized by batch scale...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-03-01
|
| Series: | Fermentation |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-5637/8/4/143 |
| _version_ | 1797446484410499072 |
|---|---|
| author | Kang Hoon Lee Imtiaz Afzal Khan Muhammad Ali Inam Rizwan Khan Young Min Wie Ick Tae Yeom |
| author_facet | Kang Hoon Lee Imtiaz Afzal Khan Muhammad Ali Inam Rizwan Khan Young Min Wie Ick Tae Yeom |
| author_sort | Kang Hoon Lee |
| collection | DOAJ |
| description | The goal of this study was to evaluate the biodegradation of 1,4–dioxane using a mixed biological culture grown in textile wastewater sludge with 1,4–dioxane as the sole carbon source. The conditions for the long-term evaluation of 1,4–dioxane degradation were determined and optimized by batch scale analysis. Moreover, Monod’s model was used to determine the biomass decay rate and unknown parameters. The soluble chemical oxygen demand (sCOD) was used to determine the concentration of 1,4–dioxane in the batch test, and gas chromatography/mass spectrometry (GC/MS) was used to measure the concentrations via long-term wastewater analysis. Two types of reactors (continuous stirred reactor (CSTR) and plug flow reactor (PFR)) for the treatment of 1,4–dioxane from textile wastewater were operated for more than 120 days under optimized conditions. These used the mixed microbial culture grown in textile wastewater sludge and 1,4–dioxane as the sole carbon source. The results indicated efficient degradation of 1,4–dioxane by the mixed culture in the presence of a competitive inhibitor, with an increase in degradation time from 13.37 h to 55 h. A specific substrate utilization rate of 0.0096 mg 1,4–dioxane/mg MLVSS/h was observed at a hydraulic retention time of 20 h for 20 days of operation in a biomass concentration of 3000 mg/L produced by the mixed microbial culturing process. In the long-term analysis, effluent concentrations of 3 mg/L and <1 mg/L of 1,4–dioxane were observed for CSTR and PFR, respectively. The higher removal efficacy of PFR was due to the production of more MLVSS at 4000 mg/L compared to the outcome of 3000 mg/L in CSTR in a competitive environment. |
| first_indexed | 2024-03-09T13:41:02Z |
| format | Article |
| id | doaj.art-1f2bceca414941e893a2e7d21098dc4e |
| institution | Directory Open Access Journal |
| issn | 2311-5637 |
| language | English |
| last_indexed | 2024-03-09T13:41:02Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fermentation |
| spelling | doaj.art-1f2bceca414941e893a2e7d21098dc4e2023-11-30T21:06:03ZengMDPI AGFermentation2311-56372022-03-018414310.3390/fermentation8040143Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed CultureKang Hoon Lee0Imtiaz Afzal Khan1Muhammad Ali Inam2Rizwan Khan3Young Min Wie4Ick Tae Yeom5Department of Energy and Environmental Engineering, Catholic University, 43 Jibong-ro, Bucheon-si 14662, KoreaDepartment of Civil and Environmental Engineering, Hanyang University, Seoul 04763, KoreaInstitute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), H-12 Campus, National University of Sciences and Technology (NUST), Islamabad 44000, PakistanDepartment of Chemical Engineering, Quaid-e-Awam University of Engineering, Science and Technology (QUEST), Nawabshah 67480, PakistanDepartment of Materials Engineering, Kyonggi University, Suwon 16227, KoreaGraduate School of Water Resources, Sungkyunkwan University, Suwon 16419, KoreaThe goal of this study was to evaluate the biodegradation of 1,4–dioxane using a mixed biological culture grown in textile wastewater sludge with 1,4–dioxane as the sole carbon source. The conditions for the long-term evaluation of 1,4–dioxane degradation were determined and optimized by batch scale analysis. Moreover, Monod’s model was used to determine the biomass decay rate and unknown parameters. The soluble chemical oxygen demand (sCOD) was used to determine the concentration of 1,4–dioxane in the batch test, and gas chromatography/mass spectrometry (GC/MS) was used to measure the concentrations via long-term wastewater analysis. Two types of reactors (continuous stirred reactor (CSTR) and plug flow reactor (PFR)) for the treatment of 1,4–dioxane from textile wastewater were operated for more than 120 days under optimized conditions. These used the mixed microbial culture grown in textile wastewater sludge and 1,4–dioxane as the sole carbon source. The results indicated efficient degradation of 1,4–dioxane by the mixed culture in the presence of a competitive inhibitor, with an increase in degradation time from 13.37 h to 55 h. A specific substrate utilization rate of 0.0096 mg 1,4–dioxane/mg MLVSS/h was observed at a hydraulic retention time of 20 h for 20 days of operation in a biomass concentration of 3000 mg/L produced by the mixed microbial culturing process. In the long-term analysis, effluent concentrations of 3 mg/L and <1 mg/L of 1,4–dioxane were observed for CSTR and PFR, respectively. The higher removal efficacy of PFR was due to the production of more MLVSS at 4000 mg/L compared to the outcome of 3000 mg/L in CSTR in a competitive environment.https://www.mdpi.com/2311-5637/8/4/1431,4–dioxanebiodegradationmixed microbial culturecontinuous stirred reactor (CSTR)plug flow reactor (PFR) |
| spellingShingle | Kang Hoon Lee Imtiaz Afzal Khan Muhammad Ali Inam Rizwan Khan Young Min Wie Ick Tae Yeom Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture Fermentation 1,4–dioxane biodegradation mixed microbial culture continuous stirred reactor (CSTR) plug flow reactor (PFR) |
| title | Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture |
| title_full | Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture |
| title_fullStr | Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture |
| title_full_unstemmed | Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture |
| title_short | Efficacy of Continuous Flow Reactors for Biological Treatment of 1,4-Dioxane Contaminated Textile Wastewater Using a Mixed Culture |
| title_sort | efficacy of continuous flow reactors for biological treatment of 1 4 dioxane contaminated textile wastewater using a mixed culture |
| topic | 1,4–dioxane biodegradation mixed microbial culture continuous stirred reactor (CSTR) plug flow reactor (PFR) |
| url | https://www.mdpi.com/2311-5637/8/4/143 |
| work_keys_str_mv | AT kanghoonlee efficacyofcontinuousflowreactorsforbiologicaltreatmentof14dioxanecontaminatedtextilewastewaterusingamixedculture AT imtiazafzalkhan efficacyofcontinuousflowreactorsforbiologicaltreatmentof14dioxanecontaminatedtextilewastewaterusingamixedculture AT muhammadaliinam efficacyofcontinuousflowreactorsforbiologicaltreatmentof14dioxanecontaminatedtextilewastewaterusingamixedculture AT rizwankhan efficacyofcontinuousflowreactorsforbiologicaltreatmentof14dioxanecontaminatedtextilewastewaterusingamixedculture AT youngminwie efficacyofcontinuousflowreactorsforbiologicaltreatmentof14dioxanecontaminatedtextilewastewaterusingamixedculture AT icktaeyeom efficacyofcontinuousflowreactorsforbiologicaltreatmentof14dioxanecontaminatedtextilewastewaterusingamixedculture |