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Stefanatou A, Vouzi L, Petousi I, Koukoura A, Gatidou G, Stasinakis AS, Fountoulakis MS. Treatment of real laundry wastewater using vertical flow constructed wetland planted with the ornamental climbing plant Trachelospermum jasminoides: assessing the removal of conventional pollutants and benzotriazoles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:43281-43291. [PMID: 38902442 DOI: 10.1007/s11356-024-34035-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 06/15/2024] [Indexed: 06/22/2024]
Abstract
This study investigates the effectiveness of vertical flow constructed wetlands (VFCWs) planted with a climbing ornamental plant for on-site treatment of real laundry wastewater. Specifically, the presence or absence of Trachelospermum jasminoides was evaluated for the removal performance of conventional pollutants (turbidity, TSS, COD, TP) and benzotriazoles (BTRs): 1H-benzotriazole (BTR), 5-methyl-1H-benzotriazole (5-TTR), 5-chlorobenzotriazole (CBTR), and xylytriazole (XTR). Results revealed that high removal efficiencies ranging from 92 to 98% were presented in both planted and unplanted systems for turbidity, TSS, and COD. Moreover, high removal rates were observed for CBTR and XTR, which were the only compounds found in real laundry wastewater, in both VFCW systems (planted: 100%; 94%; unplanted: 87%; 92%, respectively). The contribution of plants to the pollutant's removal was not statistically significant for all examined parameters. However, T. jasminoides demonstrated the ability to survive and grow without any visible symptoms under the harsh conditions of laundry wastewater, enabling the development of green facade. According to the findings, the application of VFCWs for on-site laundry wastewater treatment in buildings seems to be a highly promising solution, not only for primarily removing conventional pollutants but also for addressing emerging contaminants, specifically BTRs.
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Affiliation(s)
- Aimilia Stefanatou
- Department of Environment, University of the Aegean, 81100, Mytilene, Greece.
| | - Lydia Vouzi
- Department of Environment, University of the Aegean, 81100, Mytilene, Greece
| | - Ioanna Petousi
- Department of Environment, University of the Aegean, 81100, Mytilene, Greece
| | - Asimina Koukoura
- Department of Environment, University of the Aegean, 81100, Mytilene, Greece
| | - Georgia Gatidou
- Department of Environment, University of the Aegean, 81100, Mytilene, Greece
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Jałowiecki Ł, Strugała-Wilczek A, Ponikiewska K, Borgulat J, Płaza G, Stańczyk K. Constructed wetland as a green remediation technology for the treatment of wastewater from underground coal gasification process. PLoS One 2024; 19:e0300485. [PMID: 38470886 DOI: 10.1371/journal.pone.0300485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
The wastewater from underground coal gasification (UCG) process has extremely complex composition and high concentrations of toxic and refractory compounds including phenolics, aliphatic and aromatic hydrocarbons, ammonia, cyanides, hazardous metals and metalloids. So, the development of biological processes for treating UCG wastewater poses a serious challenge in the sustainable coal industry. The aim of the study was to develop an innovative and efficient wetland construction technology suitable for a treatment of UCG wastewater using available and low-cost media. During the bioremediation process the toxicity of the raw wastewater decreased significantly between 74%-99%. The toxicity units (TU) ranged from values corresponding to very high acute toxic for raw wastewater to non-toxic for effluents from wetland columns after 60 days of the experiment. The toxicity results correlated with the decrease of some organic and inorganic compounds such as phenols, aromatic hydrocarbons, cyanides, metals and ammonia observed during the bioremediation process. The removal percentage of organic compounds like BTEX, PAHs and phenol was around 99% just after 14 days of treatment. A similar removal rate was indicated for cyanide and metals (Zn, Cr, Cd and Pb). Concluded, in order to effectively assess remediation technologies, it is desirable to consider combination of physicochemical parameters with ecotoxicity measurements. The present findings show that wetland remediation technology can be used to clean-up the heavily contaminated waters from the UCG process. Wetland technology as a nature-based solution has the potential to turn coal gasification wastewater into usable recycled water. It is economically and environmentally alternative treatment method.
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Affiliation(s)
- Łukasz Jałowiecki
- Environmental Microbiology Unit, Institute for Ecology of Industrial Areas, Katowice, Poland
| | | | - Katarzyna Ponikiewska
- Department of Energy Saving and Air Protection, Central Mining Institute, Katowice, Poland
| | - Jacek Borgulat
- Environmental Microbiology Unit, Institute for Ecology of Industrial Areas, Katowice, Poland
| | - Grażyna Płaza
- Environmental Microbiology Unit, Institute for Ecology of Industrial Areas, Katowice, Poland
- Faculty of Organization and Management, Silesian University of Technology, Zabrze, Poland
| | - Krzysztof Stańczyk
- Department of Energy Saving and Air Protection, Central Mining Institute, Katowice, Poland
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Partal R, Murat Hocaoglu S, Yigit NÖ. Acute inhibition of hospital and medical laboratory wastewater on activated sludge. ENVIRONMENTAL TECHNOLOGY 2024; 45:262-271. [PMID: 35849543 DOI: 10.1080/09593330.2022.2103743] [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: 12/16/2021] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Sustainable operation is an essential challenge in many municipal wastewater treatment plants. Among many types of wastewater mixed in a sewer, healthcare wastewaters need special attention due to their hazardous substance content, which can be toxic to activated sludge. This study compared the acute inhibitory effects of healthcare wastewaters (HW) and medical laboratory wastewater (MLW) on conventional activated sludge (CAS) and membrane bioreactor (MBR). The sensitivity test showed that nitrifying bacteria (NBs) in MBR sludge have higher resistance to acute toxicity than the CAS. Compared with HW, MLW caused much higher inhibition on both sludges. When the ratio of HW in the tested domestic wastewater was 10%, inhibition of NBs was 39% in AS, while it was 31% in MBR. When the ratio of MLW in the tested domestic wastewater was only 10%, 72% of NBs in AS and 57% of NBs in MBR were already inhibited. The higher resistance of NB in MBR may be explained by the diversity of microorganisms in the MBR operated at high sludge ages. The findings of this study may be used to estimate the acute inhibition effect of HW and MLW discharged directly to the sewage at higher loads.
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Affiliation(s)
| | | | - Nevzat Özgu Yigit
- Faculty of Engineering, Department of Environmental Engineering, Suleyman Demirel University, Isparta, Turkey
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Fekete-Kertész I, Pous N, Feigl V, Márton R, Berkl Z, Ceballos-Escalera A, Balaguer MD, Puig S, Molnár M. Ecotoxicity characterization assisted performance assessment of electro-bioremediation reactors for nitrate and arsenite elimination. Biotechnol Bioeng 2024; 121:250-265. [PMID: 37881108 DOI: 10.1002/bit.28580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
The performance of combined reduction of nitrate (NO3 - ) to dinitrogen gas (N2 ) and oxidation of arsenite (As[III]) to arsenate (As[V]) by a bioelectrochemical system was assessed, supported by ecotoxicity characterization. For the comprehensive toxicity characterization of the untreated model groundwater and the treated reactor effluents, a problem-specific ecotoxicity test battery was established. The performance of the applied technology in terms of toxicity and target pollutant elimination was compared and analyzed. The highest toxicity attenuation was achieved under continuous flow mode with hydraulic retention time (HRT) = 7.5 h, with 95%, nitrate removal rate and complete oxidation of arsenite to arsenate. Daphnia magna proved to be the most sensitive test organism. The results of the D. magna lethality test supported the choice of the ideal operational conditions based on chemical data analysis. The outcomes of the study demonstrated that the applied technology was able to improve the groundwater quality in terms of both chemical and ecotoxicological characteristics. The importance of ecotoxicity evaluation was also highlighted, given that significant target contaminant elimination did not necessarily lower the environmental impact of the initial, untreated medium, in addition, anomalies might occur during the technology operational process which in some instances, could result in elevated toxicity levels.
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Affiliation(s)
- Ildikó Fekete-Kertész
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Narcís Pous
- LEQUiA, Institute of the Environment, University of Girona, Girona, Spain
| | - Viktória Feigl
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Rita Márton
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zsófia Berkl
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | | | - Maria D Balaguer
- LEQUiA, Institute of the Environment, University of Girona, Girona, Spain
| | - Sebastià Puig
- LEQUiA, Institute of the Environment, University of Girona, Girona, Spain
| | - Mónika Molnár
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
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Sorgato AC, Jeremias TC, Lobo FL, Lapolli FR. Microbial fuel cell: Interplay of energy production, wastewater treatment, toxicity assessment with hydraulic retention time. ENVIRONMENTAL RESEARCH 2023; 231:116159. [PMID: 37211179 DOI: 10.1016/j.envres.2023.116159] [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: 01/30/2023] [Revised: 05/08/2023] [Accepted: 05/14/2023] [Indexed: 05/23/2023]
Abstract
Microbial fuel cell (MFC) operation under similar conditions to conventional methods will support the use of this technology in large-scale wastewater treatment. The operation of scaled-up air-cathode MFC (2 L) fed with synthetic wastewater (similar to domestic) in a continuous flow was evaluated using three different hydraulic retention times (HRT), 12, 8, and 4 h. We found that electricity generation and wastewater treatment could be enhanced under an HRT of 12 h. Additionally, the longer HRT led to greater coulombic efficiency (5.44%) than MFC operating under 8 h and 4 h, 2.23 and 1.12%, respectively. However, due to the anaerobic condition, the MFC was unable to remove nutrients. Furthermore, an acute toxicity test with Lactuca sativa revealed that MFC could reduce wastewater toxicity. These outcomes demonstrated that scaled-up MFC could be operated as a primary effluent treatment and transform a wastewater treatment plant (WWTP) into a renewable energy producer.
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Affiliation(s)
- Ana Carla Sorgato
- Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina (UFSC), Campus Universitário, Trindade, 88.040-900, Florianópolis, SC, Brazil.
| | - Thamires Custódio Jeremias
- Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina (UFSC), Campus Universitário, Trindade, 88.040-900, Florianópolis, SC, Brazil
| | - Fernanda Leite Lobo
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará (UFC), Campus Do Pici, 60.440-900, Fortaleza, CE, Brazil
| | - Flávio Rubens Lapolli
- Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina (UFSC), Campus Universitário, Trindade, 88.040-900, Florianópolis, SC, Brazil
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Wang M, Zhu P, Liu S, Chen Y, Liang D, Liu Y, Chen W, Du L, Wu C. Application of Nanozymes in Environmental Monitoring, Management, and Protection. BIOSENSORS 2023; 13:314. [PMID: 36979526 PMCID: PMC10046694 DOI: 10.3390/bios13030314] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Nanozymes are nanomaterials with enzyme-like activity, possessing the unique properties of nanomaterials and natural enzyme-like catalytic functions. Nanozymes are catalytically active, stable, tunable, recyclable, and versatile. Therefore, increasing attention has been paid in the fields of environmental science and life sciences. In this review, we focused on the most recent applications of nanozymes for environmental monitoring, environmental management, and environmental protection. We firstly introduce the tuning catalytic activity of nanozymes according to some crucial factors such as size and shape, composition and doping, and surface coating. Then, the application of nanozymes in environmental fields are introduced in detail. Nanozymes can not only be used to detect inorganic ions, molecules, organics, and foodborne pathogenic bacteria but are also involved in the degradation of phenolic compounds, dyes, and antibiotics. The capability of nanozymes was also reported for assisting air purification, constructing biofuel cells, and application in marine antibacterial fouling removal. Finally, the current challenges and future trends of nanozymes toward environmental fields are proposed and discussed.
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Affiliation(s)
- Miaomiao Wang
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Ping Zhu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Shuge Liu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Yating Chen
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Dongxin Liang
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Yage Liu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Wei Chen
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Liping Du
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
| | - Chunsheng Wu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China
- Key Laboratory of Environment and Genes Related to Diseases, Xi’an Jiaotong University, Ministry of Education of China, Xi’an 710061, China
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Liu A, Zhao Y, Cai Y, Kang P, Huang Y, Li M, Yang A. Towards Effective, Sustainable Solution for Hospital Wastewater Treatment to Cope with the Post-Pandemic Era. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2854. [PMID: 36833551 PMCID: PMC9957062 DOI: 10.3390/ijerph20042854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has spread across the globe since the end of 2019, posing significant challenges for global medical facilities and human health. Treatment of hospital wastewater is vitally important under this special circumstance. However, there is a shortage of studies on the sustainable wastewater treatment processes utilized by hospitals. Based on a review of the research trends regarding hospital wastewater treatment in the past three years of the COVID-19 outbreak, this review overviews the existing hospital wastewater treatment processes. It is clear that activated sludge processes (ASPs) and the use of membrane bioreactors (MBRs) are the major and effective treatment techniques applied to hospital wastewater. Advanced technology (such as Fenton oxidation, electrocoagulation, etc.) has also achieved good results, but the use of such technology remains small scale for the moment and poses some side effects, including increased cost. More interestingly, this review reveals the increased use of constructed wetlands (CWs) as an eco-solution for hospital wastewater treatment and then focuses in slightly more detail on examining the roles and mechanisms of CWs' components with respect to purifying hospital wastewater and compares their removal efficiency with other treatment processes. It is believed that a multi-stage CW system with various intensifications or CWs incorporated with other treatment processes constitute an effective, sustainable solution for hospital wastewater treatment in order to cope with the post-pandemic era.
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Affiliation(s)
- Ang Liu
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Yaqian Zhao
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Yamei Cai
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Peiying Kang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Yulong Huang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Min Li
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Anran Yang
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, China
- Department of Municipal and Environmental Engineering, School of Water Resources and Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China
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Cheng R, Zhu H, Wang J, Hou S, Shutes B, Yan B. Removal of microcystin (MC-LR) in constructed wetlands integrated with microbial fuel cells: Efficiency, bioelectricity generation and microbial response. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 309:114669. [PMID: 35168133 DOI: 10.1016/j.jenvman.2022.114669] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/11/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Microcystins (MCs) pollution caused by cyanobacteria harmful blooms (CHBs) has posed short- and long-term risks to aquatic ecosystems and public health. Constructed wetlands (CWs) have been verified as an effective technology for eutrophication but the removal performance for MCs did not achieve an acceptable level. CWs integrated with microbial fuel cell (MFC-CWs) were developed to intensify the nutrient and Microcystin-LR (MC-LR) removal efficiencies in this study. The results indicated that closed-circuit MFC-CWs (T1) exhibited a better NO3--N, NH4+-N, TP and MC-LR removal efficiency compared to that of open-circuit MFC-CWs (CK, i.e., traditional CWs). Therein, a MC-LR removal efficiency of greater than 95% was observed in both trials in T1. The addition of sponge iron to the anode layer of MFC-CWs (T2) improved only the NO3--N removal and efficiency bioelectricity generation performance compared to T1, and the average effluent MC-LR concentration of T2 (1.14 μg/L) was still higher than the provisional limit concentration (1.0 μg/L). The microbial community diversity of T1 and T2 was simplified compared to CK. The relative abundance of Sphingomonadaceae possessing the degradation capability for MCs increased in T1, which contributed to the higher MC-LR removal efficiency compared to CK and T2. While the relative abundance of electrochemically active bacteria (EAB) (i.e., Desulfuromonadaceae and Desulfomicrobiaceae) in the anode of T2 was promoted by the addition of sponge iron. Overall, this study suggests that integrating MFC into CWs provides a feasible intensification strategy for eutrophication and MCs pollution control.
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Affiliation(s)
- Rui Cheng
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; Jilin Provincial Engineering Center of CWs Design in Cold Region and Beautiful Country Construction, Changchun, 130102, China
| | - Hui Zhu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; Jilin Provincial Engineering Center of CWs Design in Cold Region and Beautiful Country Construction, Changchun, 130102, China.
| | - Jingfu Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Shengnan Hou
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; Jilin Provincial Engineering Center of CWs Design in Cold Region and Beautiful Country Construction, Changchun, 130102, China
| | - Brian Shutes
- Department of Natural Sciences, Middlesex University, Hendon, London, NW4 4BT, UK
| | - Baixing Yan
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China; Jilin Provincial Engineering Center of CWs Design in Cold Region and Beautiful Country Construction, Changchun, 130102, China
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Trajano GT, Vasconcelos OMSR, Pataca LCM, Mol MPG. Anionic surfactants monitoring in healthcare facilities - a case of Belo Horizonte City, Brazil. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:248. [PMID: 35246746 PMCID: PMC8896972 DOI: 10.1007/s10661-022-09877-x] [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: 10/08/2021] [Accepted: 02/17/2022] [Indexed: 05/02/2023]
Abstract
Surfactants are substances that when in aquatic environments can cause negative impacts. Hospital effluents carry numerous chemicals daily, including surfactants, used in sanitization and disinfection procedures. These chemicals are found in the effluents and reach water bodies due to a lack of proper removal in the wastewater treatment plants. The present study investigated data about wastewater monitored from healthcare facilities located in the city of Belo Horizonte, Brazil, focusing on anionic surfactants. The results showed 72 establishments monitoring this parameter, resulting in a median concentration of 1 mg L-1 and 2.49 mg L-1 mean value of anionic surfactants, between 2007 and 2019. It is also observed in the correlation between surfactants and oils in all healthcare establishment sizes, except for the medium-sized. Although anionic surfactants are the most used in cleaning product formulations, cationic surfactants still do not have specific legislation in the studied country that dictates a limit for discharge into sewage; consequently, they are not routinely monitored in effluents. However, these compounds are used in the formulation of routine hospital products.
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Affiliation(s)
- Graziela Torres Trajano
- Research and Development Department, Ezequiel Dias Foundation, Conde Pereira Carneiro St, 80 Belo Horizonte, Brazil
| | | | - Luiz Carlos Moutinho Pataca
- Research and Development Department, Ezequiel Dias Foundation, Conde Pereira Carneiro St, 80 Belo Horizonte, Brazil
| | - Marcos Paulo Gomes Mol
- Research and Development Department, Ezequiel Dias Foundation, Conde Pereira Carneiro St, 80 Belo Horizonte, Brazil.
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Zoroufchi Benis K, Behnami A, Aghayani E, Farabi S, Pourakbar M. Water recovery and on-site reuse of laundry wastewater by a facile and cost-effective system: Combined biological and advanced oxidation process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 789:148068. [PMID: 34323830 DOI: 10.1016/j.scitotenv.2021.148068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/20/2021] [Accepted: 05/23/2021] [Indexed: 06/13/2023]
Abstract
Combined biological and physicochemical process was selected for treatment of laundry wastewater. The results show that after microbial adaptation, almost 91% of COD was removed at food to microorganism (F/M) ratio of 0.12 gBOD/gMLSS·d. Dehydrogenase activity of the biomass showed an increasing trend and finally reached 3.8 μgTFgbiomass.d corresponding to the highest process performance. 16SrRNA fragment and phylogenetic analysis identified Pseudomonas pharmacofabricae and Bacillus spp. as the dominant bacteria. The effluent of the biological process was then injected into the UV/O3 process for complete removal of residual COD and detergent. Finally, microfiltration and ultrafiltration were used to remove any remaining suspended solids. The operating cost analysis showed that 0.65 €/m3 treated wastewater is required for treatment of the laundry wastewater. Accordingly, the suggested combination of the biological and physicochemical process could be a promising and highly efficient process for treatment and reuse of laundry wastewater.
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Affiliation(s)
- Khaled Zoroufchi Benis
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Ali Behnami
- Department of Environmental Health Engineering, Maragheh University of Medical Sciences, Maragheh, Iran
| | - Ehsan Aghayani
- Department of Environmental Health Engineering, Abadan Faculty of Medical Sciences, Abadan, Iran
| | | | - Mojtaba Pourakbar
- Department of Environmental Health Engineering, Maragheh University of Medical Sciences, Maragheh, Iran.
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Verlicchi P. Trends, new insights and perspectives in the treatment of hospital effluents. CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH 2021; 19:100217. [PMID: 33103011 PMCID: PMC7571420 DOI: 10.1016/j.coesh.2020.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Recently, investigations of hospital effluent management and treatment have not only interested research groups with acquired experience in the field, but have also attracted the interest of new groups over the world. The most recent literature provides new insights into the occurrence of pharmaceuticals and other contaminants of emerging concern, pathogens, viruses, and antibiotic-resistant bacteria and genes in hospital effluent in various new developing and developed countries. It also provides information on the effective removal of key compounds (mainly antibiotics, analgesics, beta-blockers and chemotherapy drugs) by means of enhanced biological treatments and advanced oxidation processes. The current debate among the scientific community is mainly about the proper treatment to reduce the spread of antibiotic-resistant bacteria and genes and about the feasibility (from a technical and economic point of view) of treatment trains tested at lab and pilot scales.
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Affiliation(s)
- Paola Verlicchi
- Department of Engineering, University of Ferrara, Via Saragat 1, 44122 Ferrara, Italy
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Rahman ME, Bin Halmi MIE, Bin Abd Samad MY, Uddin MK, Mahmud K, Abd Shukor MY, Sheikh Abdullah SR, Shamsuzzaman SM. Design, Operation and Optimization of Constructed Wetland for Removal of Pollutant. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E8339. [PMID: 33187288 PMCID: PMC7698012 DOI: 10.3390/ijerph17228339] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/26/2020] [Accepted: 10/31/2020] [Indexed: 01/30/2023]
Abstract
Constructed wetlands (CWs) are affordable and reliable green technologies for the treatment of various types of wastewater. Compared to conventional treatment systems, CWs offer an environmentally friendly approach, are low cost, have fewer operational and maintenance requirements, and have a high potential for being applied in developing countries, particularly in small rural communities. However, the sustainable management and successful application of these systems remain a challenge. Therefore, after briefly providing basic information on wetlands and summarizing the classification and use of current CWs, this study aims to provide and inspire sustainable solutions for the performance and application of CWs by giving a comprehensive review of CWs' application and the recent development of their sustainable design, operation, and optimization for wastewater treatment. To accomplish this objective, thee design and management parameters of CWs, including macrophyte species, media types, water level, hydraulic retention time (HRT), and hydraulic loading rate (HLR), are discussed. Besides these, future research on improving the stability and sustainability of CWs are highlighted. This article provides a tool for researchers and decision-makers for using CWs to treat wastewater in a particular area. This paper presents an aid for informed analysis, decision-making, and communication. The review indicates that major advances in the design, operation, and optimization of CWs have greatly increased contaminant removal efficiencies, and the sustainable application of this treatment system has also been improved.
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Affiliation(s)
- Md Ekhlasur Rahman
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.E.R.); (M.Y.B.A.S.); (M.K.U.)
- Divisional Laboratory, Soil Resource Development Institute, Krishi Khamar Sarak, Farmgate, Dhaka-1215, Bangladesh;
| | - Mohd Izuan Effendi Bin Halmi
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.E.R.); (M.Y.B.A.S.); (M.K.U.)
| | - Mohd Yusoff Bin Abd Samad
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.E.R.); (M.Y.B.A.S.); (M.K.U.)
| | - Md Kamal Uddin
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia; (M.E.R.); (M.Y.B.A.S.); (M.K.U.)
| | - Khairil Mahmud
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Mohd Yunus Abd Shukor
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Science, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Siti Rozaimah Sheikh Abdullah
- Department of Chemical & Process Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi 43600, Malaysia;
| | - S M Shamsuzzaman
- Divisional Laboratory, Soil Resource Development Institute, Krishi Khamar Sarak, Farmgate, Dhaka-1215, Bangladesh;
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Wang W, Zhang Y, Li M, Wei X, Wang Y, Liu L, Wang H, Shen S. Operation mechanism of constructed wetland-microbial fuel cells for wastewater treatment and electricity generation: A review. BIORESOURCE TECHNOLOGY 2020; 314:123808. [PMID: 32713782 DOI: 10.1016/j.biortech.2020.123808] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/02/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
Constructed wetland-microbial fuel cells (CWL-MFCs) are eco-friendly and sustainable technology, simultaneously implementing contaminant removal and electricity production. According to intensive research over the last five years, this review on the operation mechanism was conducted for in-depth understanding and application guidance of CWL-MFCs. The electrochemical mechanism based on anodic oxidation and cathodic reduction is the core for improved treatment in CWL-MFCs compared to CWLs. As the dominant bacterial community, the abundance and gene-expression patterns of electro-active bacteria responds to electrode potentials and contaminant loadings, further affecting operational efficiency of CWL-MFCs. Plants benefit COD and N removal by supplying oxygen for aerobic degradation and rhizosphere secretions for microorganisms. Multi-electrode configuration, carbon-based electrodes and rich porous substrates affect transfer resistance and bacterial communities. The possibilities of CWL-MFCs targeting at recalcitrant contaminants like flame retardants and interchain interactions among effect components need systematic research.
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Affiliation(s)
- Wenjing Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Yu Zhang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Mengxiang Li
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Xiaogang Wei
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Yali Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Ling Liu
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China
| | - Hongjie Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance, College of Life Sciences, Hebei University, China.
| | - Shigang Shen
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China
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