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Deng Y, Yang G, Lens PNL, He Y, Qie L, Shen X, Chen J, Cheng Z, Chen D. Enhanced removal of mixed VOCs with different hydrophobicities by Tween 20 in a biotrickling filter: Kinetic analysis and biofilm characteristics. JOURNAL OF HAZARDOUS MATERIALS 2023; 450:131063. [PMID: 36867905 DOI: 10.1016/j.jhazmat.2023.131063] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 02/10/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Mass transfer limitation usually causes the poor performance of biotrickling filters (BTFs) for the treatment of hydrophobic volatile organic compounds (VOCs) during long-term operation. In this study, two identical lab-scale BTFs were established to remove a mixture of n-hexane and dichloromethane (DCM) gases using non-ionic surfactant Tween 20 by Pseudomonas mendocina NX-1 and Methylobacterium rhodesianum H13. A low pressure drop (≤110 Pa) and a rapid biomass accumulation (17.1 mg g-1) were observed in the presence of Tween 20 during the startup period (30 d). The removal efficiency (RE) of n-hexane was enhanced by 15.0%- 20.5% while DCM was completely removed with the inlet concentration (IC) of 300 mg·m-3 at different empty bed residence times in the Tween 20 added BTF. The viable cells and the relative hydrophobicity of the biofilm were increased under the action of Tween 20, which facilitated the mass transfer and enhanced the metabolic utilization of pollutants by microbes. Besides, Tween 20 addition enhanced the biofilm formation processes including the increased extracellular polymeric substance (EPS) secretion, biofilm roughness and biofilm adhesion. The kinetic model simulated the removal performance of the BTF with Tween 20 for the mixed hydrophobic VOCs, and the goodness-of-fit was above 0.9.
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Affiliation(s)
- Ya Deng
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316004, China; College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Guangfeng Yang
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316004, China
| | - Piet N L Lens
- National University of Ireland, Galway H91TK33, Ireland
| | - Yaxue He
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316004, China; Key Laboratory of Petrochemical Environmental Pollution Control of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China
| | - Lingxiang Qie
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xingyu Shen
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316004, China
| | - Jianmeng Chen
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316004, China; Key Laboratory of Petrochemical Environmental Pollution Control of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China
| | - Zhuowei Cheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Dongzhi Chen
- School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316004, China; Key Laboratory of Petrochemical Environmental Pollution Control of Zhejiang Province, Zhejiang Ocean University, Zhoushan 316022, China.
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Shanmuganathan R, Sibtain Kadri M, Mathimani T, Hoang Le Q, Pugazhendhi A. Recent innovations and challenges in the eradication of emerging contaminants from aquatic systems. CHEMOSPHERE 2023; 332:138812. [PMID: 37127197 DOI: 10.1016/j.chemosphere.2023.138812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 04/11/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
Presence of emerging pollutants (EPs), aka Micropollutants (MPs) in the freshwater environments is a severe threat to the environment and human beings. They include pharmaceuticals, insecticides, industrial chemicals, natural hormones, and personal care items and the pollutants are mostly present in wastewater generated from urbanization and increased industrial growth. Even concentrations as low as ngL-1 or mgL-1 have proven ecologically lethal to aquatic biota. For several years, the biodegradation of various Micropollutants (MPs) in aquatic ecosystems has been a significant area of research worldwide, with many chemical compounds being discovered in various water bodies. As aquatic biota spends most of their formative phases in polluted water, the impacts on aquatic biota are obvious, indicating that the environmental danger is substantial. In contrast, the impact of these contaminants on aquatic creatures and freshwater consumption is more subtle and manifests directly when disrupting the endocrine system. Research and development activities are expected to enable the development of ecologically sustainable, cost-effective, and efficient treatments for practical systems in the near future. Therefore, this review aims to understand recent emerging pollutants discovered and the available treatment technologies and suggest an innovative and cost-effective method to treat these EPs, which is sustainable and follows the circular bioeconomy.
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Affiliation(s)
- Rajasree Shanmuganathan
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Mohammad Sibtain Kadri
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung City, 804201, Taiwan
| | - Thangavel Mathimani
- Department of Energy and Environment, National Institute of Technology Tiruchirappalli, Tamil Nadu, India
| | - Quynh Hoang Le
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Arivalagan Pugazhendhi
- Emerging Materials for Energy and Environmental Applications Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
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Süß M, De Visscher A. Experimental and numerical study of steady state stability in a toluene biodegrading biofilter. Sci Rep 2022; 12:12510. [PMID: 35869120 PMCID: PMC9307773 DOI: 10.1038/s41598-022-15620-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 06/27/2022] [Indexed: 11/09/2022] Open
Abstract
Different steady states in a toluene biodegrading biofilter were explored experimentally and numerically. Experimental results showed that a gradual increase of the toluene inlet concentration over several weeks leads to a consistently low exit concentration, with a drastic increase at an inlet concentration change from 7.7 to 8.5 g m−3, indicating an alteration in steady state. A significant and sudden drop in the removal efficiency from 88 to 46% was observed. A model that includes nitrogen and biomass dynamics predicted results matching the experimental biofilter performance well, but the timing of the concentration jump was not reproduced exactly. A model that assumes a gradual increase of toluene inlet concentration of 0.272 g m−3 per day, accurately reproduced the experimental relationship between inlet and outlet concentration. Although there was variation between experimental and simulated results, a clear confirmation of the jump from one steady state to another was found.
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Dou X, Liu J, Qi H, Li P, Lu S, Li J. Synergistic removal of m-xylene and its corresponding mechanism in a biotrickling filter. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yousefinejad A, Zamir SM, Nosrati M. Fungal elimination of toluene vapor in one- and two-liquid phase biotrickling filters: Effects of inlet concentration, operating temperature, and peroxidase enzyme activity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 251:109554. [PMID: 31541847 DOI: 10.1016/j.jenvman.2019.109554] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 08/30/2019] [Accepted: 09/07/2019] [Indexed: 06/10/2023]
Abstract
In this study, performance of biotrickling filters (BTFs) inoculated with fungus Phanerochaete chrysosporium at 30 °C and 40 °C in the absence and presence of silicone oil (10% v/v) was investigated. Removal of toluene was carried out at empty bed residence time (EBRT) of 1 min and at inlet concentrations of 0.5-4.4 g m-3 and 0.5-24.7 g m-3 for one-liquid phase (OLP-BTF) and two-liquid phase BTF (TLP-BTF), respectively. In general, at 40 °C, removal efficiencies (REs) > 80% were obtained in OLP-BTF for the inlet toluene concentrations < 2.5 g m-3, and REs > 70% were obtained for concentrations < 18 g m-3 in TLP-BTF. Based on the balanced equation for biodegradation, fungal respiration produced more CO2 in OLP-BTF (1.38 mol CO2/mole toluene) in comparison to TLP-BTF (0.67 mol CO2/mole toluene). In other words, the presence of oil enhanced microbial growth due to the increase of hydrophobic substrate bioavailability. The activity of extracellular ligninolytic manganese peroxidase (MnP) enzyme produced by the fungal culture was detected in the range of 27.6-71.6 U L-1 (μmol min-1 L-1) at 40 °C in TLP-BTF, while no enzymatic activity was detected in OLP-BTF.
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Affiliation(s)
- Ali Yousefinejad
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), PO Box: 14115-143, Iran
| | - Seyed Morteza Zamir
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), PO Box: 14115-143, Iran.
| | - Mohsen Nosrati
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), PO Box: 14115-143, Iran
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Boojari MA, Zamir SM, Rene ER, Shojaosadati SA. Performance assessment of gas-phase toluene removal in one- and two-liquid phase biotrickling filters using artificial neural networks. CHEMOSPHERE 2019; 234:388-394. [PMID: 31228841 DOI: 10.1016/j.chemosphere.2019.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/29/2019] [Accepted: 06/04/2019] [Indexed: 06/09/2023]
Abstract
The main aim of this work is to study gas-phase toluene removal in one- and two-liquid phase biotrickling filters (O/TLP-BTF) and model the BTF performance using artificial neural networks (ANNs). The TLP-BTF was operated for 60 d in the presence of silicone oil at empty bed residence times (EBRTs) of 120, 60, and 45 s, respectively, and toluene concentrations in the range of 0.9-3.1 g m-3. A t-test analysis indicated that increasing the silicone oil volume ratio from 5 to 10% v/v, did not significantly improve the TLP-BTF performance (p-value = 0.65 > 0.05). The results from ANN modeling showed that toluene removal was more negatively affected by the inlet concentration (casual index, CI = -5.63) due to the kinetic limitation. The CI values for inlet concentration (+4.01) and liquid trickling rate (-2.45) indicated that the diffusion-limited regime controlled the removal process in the OLP-BTF.
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Affiliation(s)
- Mohammad Amin Boojari
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), Tehran, Iran
| | - Seyed Morteza Zamir
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), Tehran, Iran.
| | - Eldon R Rene
- Department of Environmental Engineering and Water Technology, IHE-Delft Institute for Water Education, Westvest 7, 2611, AX Delft, the Netherlands
| | - Seyed Abbas Shojaosadati
- Biotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University (TMU), Tehran, Iran
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Ye JX, Lin TH, Hu JT, Poudel R, Cheng ZW, Zhang SH, Chen JM, Chen DZ. Enhancing Chlorobenzene Biodegradation by Delftia tsuruhatensis Using a Water-Silicone Oil Biphasic System. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E1629. [PMID: 31083278 PMCID: PMC6539085 DOI: 10.3390/ijerph16091629] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/25/2019] [Accepted: 05/06/2019] [Indexed: 12/13/2022]
Abstract
In this study, a water-silicone oil biphasic system was developed to enhance the biodegradation of monochlorobenzene (CB) by Delftia tsuruhatensis LW26. Compared to the single phase, the biphasic system with a suitable silicone oil fraction (v/v) of 20% allowed a 2.5-fold increase in the maximum tolerated CB concentration. The CB inhibition on D. tsuruhatensis LW26 was reduced in the presence of silicone oil, and the electron transport system activity was maintained at high levels even under high CB stress. Adhesion of cells to the water-oil interface at the water side was observed using confocal laser scanning microscopy. Nearly 75% of cells accumulated on the interface, implying that another interfacial substrate uptake pathway prevailed besides that initiated by cells in the aqueous phase. The 8-fold increase in cell surface hydrophobicity upon the addition of 20% (v/v) silicone oil showed that silicone oil modified the surface characteristics of D. tsuruhatensis LW26. The protein/polysaccharide ratio of extracellular polymeric substances (EPS) from D. tsuruhatensis LW26 presented a 3-fold enhancement. These results suggested that silicone oil induced the increase in the protein content of EPS and rendered cells hydrophobic. The resulting hydrophobic cells could adhere on the water-oil interface, improving the mass transfer by direct CB uptake from silicone oil.
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Affiliation(s)
- Jie-Xu Ye
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Tong-Hui Lin
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Jing-Tao Hu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Rabin Poudel
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
| | - Zhuo-Wei Cheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Shi-Han Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jian-Meng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Dong-Zhi Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China.
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China.
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Qu Y, Ma Y, Wan J, Wang Y. Quantitative structure-activity relationship for the partition coefficient of hydrophobic compounds between silicone oil and air. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:15641-15650. [PMID: 29574640 DOI: 10.1007/s11356-018-1705-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
The silicon oil-air partition coefficients (KSiO/A) of hydrophobic compounds are vital parameters for applying silicone oil as non-aqueous-phase liquid in partitioning bioreactors. Due to the limited number of KSiO/A values determined by experiment for hydrophobic compounds, there is an urgent need to model the KSiO/A values for unknown chemicals. In the present study, we developed a universal quantitative structure-activity relationship (QSAR) model using a sequential approach with macro-constitutional and micromolecular descriptors for silicone oil-air partition coefficients (KSiO/A) of hydrophobic compounds with large structural variance. The geometry optimization and vibrational frequencies of each chemical were calculated using the hybrid density functional theory at the B3LYP/6-311G** level. Several quantum chemical parameters that reflect various intermolecular interactions as well as hydrophobicity were selected to develop QSAR model. The result indicates that a regression model derived from logKSiO/A, the number of non-hydrogen atoms (#nonHatoms) and energy gap of ELUMO and EHOMO (ELUMO-EHOMO) could explain the partitioning mechanism of hydrophobic compounds between silicone oil and air. The correlation coefficient R2 of the model is 0.922, and the internal and external validation coefficient, Q2LOO and Q2ext , are 0.91 and 0.89 respectively, implying that the model has satisfactory goodness-of-fit, robustness, and predictive ability and thus provides a robust predictive tool to estimate the logKSiO/A values for chemicals in application domain. The applicability domain of the model was visualized by the Williams plot.
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Affiliation(s)
- Yanfei Qu
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yongwen Ma
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou, 510006, China.
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510641, China.
| | - Jinquan Wan
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou, 510006, China
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Yan Wang
- College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou, 510006, China
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