1
|
Perez-Bou L, Gonzalez-Martinez A, Gonzalez-Lopez J, Correa-Galeote D. Promising bioprocesses for the efficient removal of antibiotics and antibiotic-resistance genes from urban and hospital wastewaters: Potentialities of aerobic granular systems. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 342:123115. [PMID: 38086508 DOI: 10.1016/j.envpol.2023.123115] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 11/07/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023]
Abstract
The use, overuse, and improper use of antibiotics have resulted in higher levels of antibiotic-resistant bacteria (ARB) and antibiotic-resistance genes (ARGs), which have profoundly disturbed the equilibrium of the environment. Furthermore, once antibiotic agents are excreted in urine and feces, these substances often can reach wastewater treatment plants (WWTPs), in which improper treatments have been highlighted as the main reason for stronger dissemination of antibiotics, ARB, and ARGs to the receiving bodies. Hence, achieving better antibiotic removal capacities in WWTPs is proposed as an adequate approach to limit the spread of antibiotics, ARB, and ARGs into the environment. In this review, we highlight hospital wastewater (WW) as a critical hotspot for the dissemination of antibiotic resistance due to its high level of antibiotics and pathogens. Hence, monitoring the composition and structure of the bacterial communities related to hospital WW is a key factor in controlling the spread of ARGs. In addition, we discuss the advantages and drawbacks of the current biological WW treatments regarding the antibiotic-resistance phenomenon. Widely used conventional activated sludge technology has proved to be ineffective in mitigating the dissemination of ARB and ARGs to the environment. However, aerobic granular sludge (AGS) technology is a promising technology-with broad adaptability and excellent performance-that could successfully reduce antibiotics, ARB, and ARGs in the generated effluents. We also outline the main operational parameters involved in mitigating antibiotics, ARB, and ARGs in WWTPs. In this regard, WW operation under long hydraulic and solid retention times allows better removal of antibiotics, ARB, and ARGs independently of the WW technology employed. Finally, we address the current knowledge of the adsorption and degradation of antibiotics and their importance in removing ARB and ARGs. Notably, AGS can enhance the removal of antibiotics, ARB, and ARGs due to the complex microbial metabolism within the granular biomass.
Collapse
Affiliation(s)
- Lizandra Perez-Bou
- Microbiology Department, Faculty of Pharmacy, University of Granada, Granada, Andalucía, Spain; Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Granada, Andalucía, Spain; Microbial Biotechnology Group, Microbiology and Virology Department, Faculty of Biology, University of Havana, Cuba
| | - Alejandro Gonzalez-Martinez
- Microbiology Department, Faculty of Pharmacy, University of Granada, Granada, Andalucía, Spain; Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Granada, Andalucía, Spain
| | - Jesus Gonzalez-Lopez
- Microbiology Department, Faculty of Pharmacy, University of Granada, Granada, Andalucía, Spain; Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Granada, Andalucía, Spain
| | - David Correa-Galeote
- Microbiology Department, Faculty of Pharmacy, University of Granada, Granada, Andalucía, Spain; Microbiology and Environmental Technology Section, Institute of Water Research, University of Granada, Granada, Andalucía, Spain.
| |
Collapse
|
2
|
Bodle KB, Kirkland CM. Pharmaceutical impacts on aerobic granular sludge morphology and potential implications for abiotic removal. CHEMOSPHERE 2024; 350:141187. [PMID: 38211794 PMCID: PMC10843683 DOI: 10.1016/j.chemosphere.2024.141187] [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: 10/26/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/13/2024]
Abstract
The goal of this study was to investigate abiotic pharmaceutical removal and abiotic pharmaceutical effects on aerobic granular sludge morphology. For 80 days, a pharmaceutical mixture containing approximately 150 μg/L each of diclofenac, erythromycin, and gemfibrozil was fed to an aerobic granular sludge sequencing batch reactor and granule characteristics were compared with those from a control reactor. Aqueous and solid phase pharmaceutical concentrations were monitored and staining was used to assess changes in biofilm structures. Solid phase pharmaceutical concentrations were elevated over the first 12 days of dosing; however, they then dropped, indicative of desorption. The lipid content in pharmaceutical-exposed granules declined by approximately half over the dosing period, though the relative concentrations of other key biofilm components (proteins, alpha-, and beta-polysaccharides) did not change. Batch experiments were conducted to try to find an explanation for the desorption observed, but reduced solid phase pharmaceutical concentrations could not be linked with the presence of common wastewater constituents such as ammonia or phosphate. Sorption of all three compounds was modeled best by the Henry isotherm, indicating that, even at 150 μg/L, granules' sorption site coverage was incomplete. Altogether, this study demonstrates that simplified batch systems may not accurately represent the complex abiotic processes occurring in flow-through, biotic systems.
Collapse
Affiliation(s)
- Kylie B Bodle
- Department of Civil Engineering, 205 Cobleigh Hall, Montana State University, Bozeman, MT, USA; Center for Biofilm Engineering, 366 Barnard Hall, Montana State University, Bozeman, MT, USA.
| | - Catherine M Kirkland
- Department of Civil Engineering, 205 Cobleigh Hall, Montana State University, Bozeman, MT, USA; Center for Biofilm Engineering, 366 Barnard Hall, Montana State University, Bozeman, MT, USA
| |
Collapse
|
3
|
Li L, Hu Y, Li B, Kuang K, Peng L, Xu Y, Song K. Effect and microbial mechanism of pharmaceutical and personal care product exposure on partial nitrification process and nitrous oxide emission. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166286. [PMID: 37586526 DOI: 10.1016/j.scitotenv.2023.166286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 08/18/2023]
Abstract
This study focused on the short- and long-term exposure of pharmaceutical and personal care products (PPCPs) to the partial nitrification process and nitrous oxide emission. The corresponding microbial mechanisms were also explored. The results revealed a concentration-dose effect on the partial nitrification process. Moreover, the PPCP concentration of ≥2 μg/L featured inhibitory effects on the process. The solo effect of PPCP on the partial nitrification process was analyzed through microcosmic experiments, and the results revealed significant variations in PN. A dose-effect relationship existed between the PPCP concentration and N2O emission intensity. After exposure to PPCPs, the N2O emission released during the partial nitrification process was significantly reduced. Different PPCPs featured various effects in mitigating N2O emissions. Low PPCP concentrations led to a reduction in the richness and diversity of microbes, but their community structure remained significantly unchanged. High PPCP concentrations (≥5 μg/L) resulted in increased species richness and diversity, but their microbial community composition was significantly affected. The function prediction and nitrogen metabolic pathway analysis indicated that PPCP exposure led to the inhibition of the ammonia oxidation process. However, all genes encoding denitrification enzymes were upregulated. The microorganisms in the microbial community featured modular structural properties and wide synergistic relationships between genera. This study provides valuable insights into the effect of PPCP exposure on the particle nitrification process and corresponding changes in the microbial community.
Collapse
Affiliation(s)
- Lu Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China
| | - Yikun Hu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Biqing Li
- Guangzhou Sewage Purification Co. Ltd., Guangzhou 510655, China
| | - Ke Kuang
- Guangzhou Sewage Purification Co. Ltd., Guangzhou 510655, China
| | - Lai Peng
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Yifeng Xu
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Kang Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
4
|
Tong Y, Lu P, Zhang W, Liu J, Wang Y, Quan L, Ding A. The shock of benzalkonium chloride on aerobic granular sludge system and its microbiological mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165010. [PMID: 37353018 DOI: 10.1016/j.scitotenv.2023.165010] [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: 04/15/2023] [Revised: 06/08/2023] [Accepted: 06/17/2023] [Indexed: 06/25/2023]
Abstract
Quaternary ammonium compounds (QACs) are a kind of biocides and surfactants widely used around the world and wastewater treatment systems were identified as its largest pool. QACs could significantly inhibit microbial activity in biological treatment. Aerobic granular sludge (AGS) is an emerging wastewater biological treatment technology with high efficiency and resistance, but it is still unclear if AGS system could tolerate QACs shock. In this study, a typical QAC (benzalkonium chloride (BACC12)) was selected to investigate its effect on AGS system. Results indicate that BAC could inhibit the pollutants removal performance of AGS system, including COD, NH4+-N and PO43- in the short term and the inhibition ratio had positive correlation with BAC concentration. However, AGS system could gradually adapt to the BAC stress and recover its original performance. BAC shock could destroy AGS structure by decreasing its particle size and finally leading to particle disintegration. Although AGS could secret more EPS to resist the stress, BAC still had significant inhibition on cell activity. Microbial community analysis illustrated that after high BAC concentration shock in short term, Thauera decreased significantly while Flavobacterium became the dominant genus. However, after the performance of AGS system recovered the dominant genus returned to Thauera and relevant denitrifiers Phaeodactylibacter, Nitrosomonas and Pseudofulvimonas also increased. The typical phosphorous removal microorganism Rubrivivax and Leadbetterella also showed the similar trend. The variation of denitrification and phosphorus removal microbial community was consistent with AGS system performance indicating the change of functional microorganism played key role in the AGS response to BAC stress.
Collapse
Affiliation(s)
- Yuhao Tong
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Peili Lu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Wenyu Zhang
- Chongqing Three Gorges Water Service Co., Ltd., Chongqing 400020, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Jun Liu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Yuhai Wang
- Sinopec Chongqing Shale Gas Co., Ltd, Chongqing, 408400, China
| | - Lin Quan
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Aqiang Ding
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China.
| |
Collapse
|
5
|
Bodle KB, Mueller RC, Pernat MR, Kirkland CM. Treatment performance and microbial community structure in an aerobic granular sludge sequencing batch reactor amended with diclofenac, erythromycin, and gemfibrozil. FRONTIERS IN MICROBIOMES 2023; 2:1242895. [PMID: 38076031 PMCID: PMC10705044 DOI: 10.3389/frmbi.2023.1242895] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
This study characterizes the effects of three commonly detected pharmaceuticals-diclofenac, erythromycin, and gemfibrozil-on aerobic granular sludge. Approximately 150 μg/L of each pharmaceutical was fed in the influent to a sequencing batch reactor for 80 days, and the performance of the test reactor was compared with that of a control reactor. Wastewater treatment efficacy in the test reactor dropped by approximately 30-40%, and ammonia oxidation was particularly inhibited. The relative abundance of active Rhodocyclaceae, Nitrosomonadaceae, and Nitrospiraceae families declined throughout exposure, likely explaining reductions in wastewater treatment performance. Pharmaceuticals were temporarily removed in the first 12 days of the test via both sorption and degradation; both removal processes declined sharply thereafter. This study demonstrates that aerobic granular sludge may successfully remove pharmaceuticals in the short term, but long-term tests are necessary to confirm if pharmaceutical removal is sustainable.
Collapse
Affiliation(s)
- Kylie B. Bodle
- Department of Civil Engineering, Montana State University, Bozeman, MT, United States
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States
| | - Rebecca C. Mueller
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States
- United States Department of Agriculture (USDA) Agricultural Research Service, Western Regional Research Center, Albany, CA, United States
| | - Madeline R. Pernat
- Department of Civil Engineering, Montana State University, Bozeman, MT, United States
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States
| | - Catherine M. Kirkland
- Department of Civil Engineering, Montana State University, Bozeman, MT, United States
- Center for Biofilm Engineering, Montana State University, Bozeman, MT, United States
| |
Collapse
|
6
|
Sengar A, Vijayanandan A. Fate and removal of iodinated X-ray contrast media in membrane bioreactor: Microbial dynamics and effects of different operational parameters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 869:161827. [PMID: 36708825 DOI: 10.1016/j.scitotenv.2023.161827] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 06/18/2023]
Abstract
Iodinated X-ray contrast media (ICM) are mainly used in medical sector, and their presence in environmental waters is a cause of concern as they are capable of forming highly toxic iodinated disinfection byproducts. In the present study, the removal mechanisms of the three ICM- iohexol, iopromide, and iopamidol were elucidated in a lab-scale aerobic membrane bioreactor (MBR). At steady-state operation (solids retention time (SRT)- 70 days, organic loading rate (OLR)- 0.80 KgCOD/m3-day, nitrogen loading rate (NLR)- 0.08 KgNH4-N/m3-day, hydraulic retention time (HRT)- 12 h), the average removal of iohexol and iopromide was found to be 34.9 and 45.2 %, respectively, whereas iopamidol proved to be highly recalcitrant in aerobic conditions of the MBR (removal <10 % in all phases of the MBR operation). Further, through batch kinetic studies and mass balance analysis, it was observed that ICM were primarily biotransformed in the MBR system and biosorption (Kd < 10 L/Kg) was negligible. The biodegradation rate coefficient values (Kbiol) of the ICM were found to be <0.65 L/g-d which indicate that biotransformation rate of ICM was slow. Increased OLR (1.60 KgCOD/m3-day) and reduced SRT (20 days) were found to negatively affect the removal of the ICM. Further, the removal of ICM was found to depend on its initial concentration, and the increment in the ammonium loading (0.16 KgNH4-N/m3-day) did not favor its removal. The dosing of ICM altered the microbial dynamics of the mixed liquor and reduced the microbial diversity and richness. Bdellovibrio, Zoogloea, and bacteria belonging to TM7-3 class, Cryomorphaceae and Hyphomonadaceae families may contribute in ICM biotransformation.
Collapse
Affiliation(s)
- Ashish Sengar
- Department of Civil Engineering, Indian Institute of Technology Delhi (IIT Delhi), New Delhi 110016, India
| | - Arya Vijayanandan
- Department of Civil Engineering, Indian Institute of Technology Delhi (IIT Delhi), New Delhi 110016, India.
| |
Collapse
|
7
|
Hao T, Shao J, Hu P, Varjani S, Qian G. Achieving tetracycline removal enhancement with granules in marine matrices: Performance, adaptation, and mechanism studies. BIORESOURCE TECHNOLOGY 2023; 371:128590. [PMID: 36627084 DOI: 10.1016/j.biortech.2023.128590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Using the aerobic granular sludge (AGS) to improve tetracycline (TET) removal in the treatment of mariculture wastewater was investigated in the present study. The AGS rapidly adapted to and was sustained in seawater matrices with a robust granule strength (k = 0.0014) and a more stable sludge yield than the activated sludge (AS) (0.14 vs 0.11 g-VSS/g-CODrem). The compact structure provided the AGS with an anoxic environment, which favored the growth of N (37.3 %) and P removal bacteria (30.4 %) and the expression of functional genes (nos, nor, and nar), resulting in more than 62 % TN and TP removals, respectively. Similar abundances of aromatic compound-degrading bacteria (∼34 %) in both reactors (AGS and AS) led to comparable TET biodegradation efficiencies (∼0.045 mg/g-VSS). The greater size and surface area of the AGS expanded the boundary layer diffusion region, leading to 16 % increases in the granule's TET adsorption capacity.
Collapse
Affiliation(s)
- Tianwei Hao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China; Centre for Regional Oceans, Faculty of Science and Technology, University of Macau, Macau 999078, China
| | - Jingyi Shao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China
| | - Peng Hu
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat 382 010, India
| | - Guangsheng Qian
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China; Centre for Regional Oceans, Faculty of Science and Technology, University of Macau, Macau 999078, China.
| |
Collapse
|
8
|
Yan L, Zheng Y, Yin M, Liu S, Yang M, Jiang J. The coexistence of copper ions and TC affected the binding ability and the reaction order between extracellular polymeric substances of aerobic granular sludge and exogenous substances. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:31806-31820. [PMID: 36456677 DOI: 10.1007/s11356-022-24423-5] [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: 05/02/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
As a barrier against external toxic effects, extracellular polymeric substances (EPSs) directly affect the toxicity and removal efficiency of exogenous substances. The reaction of EPSs with exogenous substances has been taken into consideration. The contents of EPSs in sludge cultivated by different influent water vary greatly, which leads to great differences in the binding ability and reaction sequence between EPSs and exogenous substances. However, the results in this respect are very limited. In this study, the binding characteristics between exogenous tetracycline (TC)/copper ions (Cu2+) and EPSs from aerobic granular sludge cultured under single and coexisting TC/Cu2+ were assessed by three-dimensional fluorescence-parallel factor analysis. The pollutants in the influent water could directionally induce microorganisms to secrete more EPSs, while fluorescence substances in EPSs could combine with the exogenous substances to lessen their effects. In the presence of coexisting TC and Cu2+ in the influent water, the ability of fluorescence substances in EPSs to combine with exogenous TC or Cu2+ weakened, and humic substances in EPSs were more susceptible than protein substances to binding with exogenous substances. However, the reaction order between EPSs components and exogenous TC or Cu2+ was opposite, and the ability of fluorescence substances in EPSs to combine with exogenous TC or Cu2+ was enhanced under individual TC or Cu2+ existing in the influent water. This study provided new insights into the interaction between EPSs and exogenous substances.
Collapse
Affiliation(s)
- Lilong Yan
- College of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Yaoqi Zheng
- College of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Mingyue Yin
- College of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Shuang Liu
- College of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Mengya Yang
- College of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Jishuang Jiang
- College of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
| |
Collapse
|
9
|
Pápai M, Benedek T, Táncsics A, Bornemann TLV, Plewka J, Probst AJ, Hussein D, Maróti G, Menashe O, Kriszt B. Selective enrichment, identification, and isolation of diclofenac, ibuprofen, and carbamazepine degrading bacteria from a groundwater biofilm. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:44518-44535. [PMID: 36690856 PMCID: PMC10076411 DOI: 10.1007/s11356-022-24975-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Diclofenac, ibuprofen, and carbamazepine are three of the most widely detected and most concerning pharmaceutical residues in aquatic ecosystems. The aim of this study was to identify bacteria that may be involved in their degradation from a bacterial biofilm. Selective enrichment cultures in mineral salt solution containing pharmaceutical compounds as sole source of carbon and energy were set up, and population dynamics were monitored using shotgun metagenome sequencing. Bacterial genomes were reconstructed using genome-resolved metagenomics. Thirty bacterial isolates were obtained, identified at species level, and tested regarding pharmaceutical biodegradation at an initial concentration of 1.5 mg l-1. The results indicated that most probably diclofenac biodegrading cultures consisted of members of genera Ferrovibrio, Hydrocarboniphaga, Zavarzinia, and Sphingopyxis, while in ibuprofen biodegradation Nocardioides and Starkeya, and in carbamazepine biodegradation Nocardioides, Pseudonocardia, and Sphingopyxis might be involved. During the enrichments, compared to the initial state the percentage relative abundance of these genera increased up to three orders of magnitude. Except Starkeya, the genomes of these bacteria were reconstructed and annotated. Metabolic analyses of the annotated genomes indicated that these bacteria harbored genes associated with pharmaceutical biodegradation. Stenotrophomonas humi DIC_5 and Rhizobium daejeonense IBU_18 isolates eliminated diclofenac and ibuprofen during the tests in the presence of either glucose (3 g l-1) or in R2A broth. Higher than 90% concentration reduction was observed in the case of both compounds.
Collapse
Affiliation(s)
- Márton Pápai
- Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter K. U. 1, 2100, Gödöllő, Hungary
| | - Tibor Benedek
- Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter K. U. 1, 2100, Gödöllő, Hungary.
| | - András Táncsics
- Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter K. U. 1, 2100, Gödöllő, Hungary
| | - Till L V Bornemann
- Group for Environmental Metagenomics, Research Center One Health Ruhr of the University Alliance Ruhr, Faculty of Chemistry, University of Duisburg-Essen, Essen, Universitäts Str. 5, 45141, Essen, Germany
| | - Julia Plewka
- Group for Environmental Metagenomics, Research Center One Health Ruhr of the University Alliance Ruhr, Faculty of Chemistry, University of Duisburg-Essen, Essen, Universitäts Str. 5, 45141, Essen, Germany
| | - Alexander J Probst
- Group for Environmental Metagenomics, Research Center One Health Ruhr of the University Alliance Ruhr, Faculty of Chemistry, University of Duisburg-Essen, Essen, Universitäts Str. 5, 45141, Essen, Germany
| | - Daood Hussein
- Institute of Horticultural Sciences, Laboratories of Food Analysis, Hungarian University of Agriculture and Life Sciences, Páter K. U. 1, 2100, Gödöllő, Hungary
| | - Gergely Maróti
- Institute of Plant Biology, Biological Research Center, Temesvári Krt. 62., Szeged, Hungary
- Seqomics Biotechnology Ltd, Vállalkozók 7, 6782, Mórahalom, Hungary
| | - Ofir Menashe
- Water Industry Engineering Department, The Engineering Faculty, Kinneret Academic College On the Sea of Galilee, D.N. Emek Ha, 15132, Yarden, Israel
- BioCastle Water Technologies Ltd, Tzemah, Israel
| | - Balázs Kriszt
- Department of Environmental Safety, Hungarian University of Agriculture and Life Sciences, Institute of Aquaculture and Environmental Safety, Páter K. U. 1, 2100, Gödöllő, Hungary
| |
Collapse
|
10
|
Zhang B, He Y, Shi W, Liu L, Li L, Liu C, Lens PNL. Biotransformation of sulfamethoxazole (SMX) by aerobic granular sludge: Removal performance, degradation mechanism and microbial response. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159771. [PMID: 36309264 DOI: 10.1016/j.scitotenv.2022.159771] [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: 09/01/2022] [Revised: 10/23/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Aerobic granular sludge (AGS) is a promising biotechnology for the treatment of antibiotic-rich wastewater. However, little is known about the antibiotics degradation mechanism and microbial response in a sulfamethoxazole (SMX)-loaded AGS system. Herein, the results of a continuous 240 days test suggested that 0.5-5 mg/L of SMX could be thoroughly removed by AGS via adsorption and degradation. The degradation pathway of SMX involved the hydrolysis of the sulfonamide bond and cleavage of NS or CS bonds, subsequently leading to the production of small molecular substances (e.g. benzene and 5-methyl-isoxazole). In terms of the AGS system, it exhibited a strong resistance to 0.5 mg/L of SMX, while 1 and 5 mg/L of SMX significantly inhibited the microbial growth, declined the nitrification efficiency, weakened the sludge settleability, and triggered the excessive growth of filamentous bacteria. Besides, the secretion of extracellular polymer substances was suppressed by 57.3% when increasing the SMX concentration from 0.5 to 5 mg/L, which was not conducive to the system stability. The long-term presence of SMX enhanced the proliferation of antibiotics resistance genes (sul1and sul2) and exerted a strong selection pressure on the microbial community, especially with Thiothrix being the dominating genus. Overall, this study elucidated that AGS qualified promising application prospects in the removal of SMX present in wastewater, but SMX at high concentrations posed great adverse impacts on the performance of the AGS system, which causes concern when treating SMX rich wastewaters.
Collapse
Affiliation(s)
- Bing Zhang
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China.
| | - Yuankai He
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Wenxin Shi
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Lanjin Liu
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Lin Li
- College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Chong Liu
- 101 Research Institute of Ministry of Civil Affairs, Beijing 100070, China
| | - Piet N L Lens
- UNESCO-IHE, Institute for Water Education, Westvest 7, 2601, DA, Delft, the Netherlands
| |
Collapse
|
11
|
Li MY, Zhang RD, Lin YX, Li QW, Zhao QY, Zhao ZX, Ling ZM, Shu LF, Zhang M, Hu LX, Shi YJ, Ying GG. Biotransformation of sulfamonomethoxine in a granular sludge system: Pathways and mechanisms. CHEMOSPHERE 2023; 313:137508. [PMID: 36493889 DOI: 10.1016/j.chemosphere.2022.137508] [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: 06/27/2022] [Revised: 10/20/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
The biotransformation of sulfamonomethoxine (SMM) was studied in an aerobic granular sludge (AGS) system to understand the role of sorption by microbial cells and extracellular polymeric substances (EPS) and the role of functional microbe/enzyme biodegradation. Biodegradation played a more important role than adsorption, while microbial cells covered with tightly bound EPS (TB-EPS) showed higher adsorption capacity than microbial cells themselves or microbial cells covered with both loosely bound EPS (LB-EPS) and TB-EPS. The binding tests between EPS and SMM and the spectroscopic analyses (3D-EEM, UV-Vis, and FTIR) were performed to obtain more information about the adsorption process. The data showed that SMM could interact with EPS by combining with aromatic protein compounds, fulvic acid-like substances, protein amide II, and nucleic acids. Batch tests with various substances showed that SMM removal rates were in an order of NH2OH (60.43 ± 2.21 μg/g SS) > NH4Cl (52.96 ± 0.30 μg/g SS) > NaNO3 (31.88 ± 1.20 μg/g SS) > NaNO2 (21.80 ± 0.42 μg/g SS). Hydroxylamine and hydroxylamine oxidoreductase (HAO) favored SMM biotransformation and the hydroxylamine-mediated biotransformation of SMM was more effective than others. In addition, both ammonia monooxygenase (AMO) and CYP450 were able to co-metabolize SMM. Analysis of UPLC-QTOF-MS indicated the biotransformation mechanisms, revealing that acetylation of arylamine, glucuronidation of sulfonamide, deamination, SO2 extrusion, and δ cleavage were the five major transformation pathways. The detection of TP202 in the hydroxylamine-fed Group C indicated a new biotransformation pathway through HAO. This study contributes to a better understanding of the biotransformation of SMM.
Collapse
Affiliation(s)
- Meng-Yuan Li
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Run-Dong Zhang
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Yi-Xing Lin
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Qi-Wen Li
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Qiu-Yue Zhao
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Zong-Xi Zhao
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Zhong-Ming Ling
- National Center for Wetland Park Management and Conservation, Cuiheng, Zhongshan, 528437, China
| | - Long-Fei Shu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510006, China
| | - Min Zhang
- The Pearl River Hydraulic Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou, 510610, China
| | - Li-Xin Hu
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China.
| | - Yi-Jing Shi
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Guang-Guo Ying
- Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| |
Collapse
|
12
|
Bodle KB, Pernat MR, Kirkland CM. Pharmaceutical Sorption to Lab Materials May Overestimate Rates of Removal in Lab-Scale Bioreactors. WATER, AIR, AND SOIL POLLUTION 2022; 233:505. [PMID: 36504545 PMCID: PMC9731345 DOI: 10.1007/s11270-022-05974-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Environmental contamination from pharmaceuticals has received increased attention from researchers in the past 20 years. As such, numerous lab-scale studies have sought to characterize the effects of these contaminants on various targets, as well as determine improved removal methods. Many studies have used lab-scale bioreactors to investigate pharmaceutical effects on wastewater bacteria, as wastewater treatment plants often act as reservoirs for pharmaceuticals. However, few-if any-of these studies report the specific lab materials used during testing, such as tubing or pipette tip type. In this study, the pharmaceuticals erythromycin, diclofenac, and gemfibrozil were exposed to different micropipette tips, syringe filters, and tubing types, and losses over time were evaluated. Losses to tubing and syringe filters were particularly significant and neared 100%, depending on the pharmaceutical compound and length of exposure time. Results discussed herein indicate that pharmaceutical sorption to various lab supplies results in decreases to both dosed and quantified pharmaceutical concentrations. Studies that fail to consider this source of loss may therefore draw inaccurate conclusions about pharmaceutical effects or removal efficiencies.
Collapse
Affiliation(s)
- Kylie B Bodle
- Department of Civil Engineering, Montana State, University, 205 Cobleigh Hall, Bozeman, MT, USA
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, USA
| | - Madeline R Pernat
- Department of Civil Engineering, Montana State, University, 205 Cobleigh Hall, Bozeman, MT, USA
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, USA
| | - Catherine M Kirkland
- Department of Civil Engineering, Montana State, University, 205 Cobleigh Hall, Bozeman, MT, USA
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT, USA
| |
Collapse
|
13
|
Aguilar-Romero I, van Dillewijn P, Nesme J, Sørensen SJ, Nogales R, Delgado-Moreno L, Romero E. A novel and affordable bioaugmentation strategy with microbial extracts to accelerate the biodegradation of emerging contaminants in different media. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155234. [PMID: 35427621 DOI: 10.1016/j.scitotenv.2022.155234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
This study describes a new bioaugmentation alternative based on the application of aqueous aerated extracts from a biomixture acclimated with ibuprofen, diclofenac and triclosan. This bioaugmentation strategy was assayed in biopurification systems (BPS) and in contaminated aqueous solutions to accelerate the removal of these emerging contaminants. Sterilized extracts or extracts from the initial uncontaminated biomixture were used as controls. In BPS, the dissipation of 90% of diclofenac and triclosan required, respectively, 60 and 108 days less than in the controls. The metabolite methyl-triclosan was determined at levels 12 times lower than in controls. In the bioaugmented solutions, ibuprofen was almost completely eliminated (99%) in 21 days and its hydroxylated metabolites were also determined to be at lower levels than in the controls. The plasmidome of acclimated biomixtures and its extract appeared to maintain certain types of plasmids but degradation related genes became less evident. Several dominant OTUs found in the extract identified as Flavobacterium and Fluviicola of the phylum Bacteroidetes, Thermomicrobia (phylum Chloroflexi) and Nonomuraea (phylum Actinobacteria), may be responsible for the enhanced dissipation of these contaminants. This bioaugmentation strategy represents an advantageous tool to facilitate in situ bioaugmentation.
Collapse
Affiliation(s)
- Inés Aguilar-Romero
- Department of Environmental Protection, Estación Experimental del Zaidín-Consejo Superior de Investigaciones Científicas (EEZ-CSIC), C/ Profesor Albareda 1, 18008 Granada, Spain
| | - Pieter van Dillewijn
- Department of Environmental Protection, Estación Experimental del Zaidín-Consejo Superior de Investigaciones Científicas (EEZ-CSIC), C/ Profesor Albareda 1, 18008 Granada, Spain
| | - Joseph Nesme
- Section of Microbiology, Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Søren J Sørensen
- Section of Microbiology, Department of Biology, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Rogelio Nogales
- Department of Environmental Protection, Estación Experimental del Zaidín-Consejo Superior de Investigaciones Científicas (EEZ-CSIC), C/ Profesor Albareda 1, 18008 Granada, Spain
| | - Laura Delgado-Moreno
- Department of Environmental Protection, Estación Experimental del Zaidín-Consejo Superior de Investigaciones Científicas (EEZ-CSIC), C/ Profesor Albareda 1, 18008 Granada, Spain
| | - Esperanza Romero
- Department of Environmental Protection, Estación Experimental del Zaidín-Consejo Superior de Investigaciones Científicas (EEZ-CSIC), C/ Profesor Albareda 1, 18008 Granada, Spain.
| |
Collapse
|
14
|
High-Throughput Microbial Community Analyses to Establish a Natural Fungal and Bacterial Consortium from Sewage Sludge Enriched with Three Pharmaceutical Compounds. J Fungi (Basel) 2022; 8:jof8070668. [PMID: 35887425 PMCID: PMC9324927 DOI: 10.3390/jof8070668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 02/04/2023] Open
Abstract
Emerging and unregulated contaminants end up in soils via stabilized/composted sewage sludges, paired with possible risks associated with the development of microbial resistance to antimicrobial agents or an imbalance in the microbial communities. An enrichment experiment was performed, fortifying the sewage sludge with carbamazepine, ketoprofen and diclofenac as model compounds, with the aim to obtain strains with the capability to transform these pollutants. Culturable microorganisms were obtained at the end of the experiment. Among fungi, Cladosporium cladosporioides, Alternaria alternata and Penicillium raistrickii showed remarkable degradation rates. Population shifts in bacterial and fungal communities were also studied during the selective pressure using Illumina MiSeq. These analyses showed a predominance of Ascomycota (Dothideomycetes and Aspergillaceae) and Actinobacteria and Proteobacteria, suggesting the possibility of selecting native microorganisms to carry out bioremediation processes using tailored techniques.
Collapse
|
15
|
Kumar M, Ngasepam J, Dhangar K, Mahlknecht J, Manna S. Critical review on negative emerging contaminant removal efficiency of wastewater treatment systems: Concept, consistency and consequences. BIORESOURCE TECHNOLOGY 2022; 352:127054. [PMID: 35351567 DOI: 10.1016/j.biortech.2022.127054] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/17/2022] [Accepted: 03/20/2022] [Indexed: 06/14/2023]
Abstract
Emerging contaminants (ECs) are not completely removed by wastewater treatment owing to their capabilities of making complexes, toxic derivatives, byproduct formation, and dynamic partitioning. Negative contaminant removal i.e., higher concentrations (up to 5731%) of these ECs in the effluent with respect to the influent sampled on the same occasions, is globally prevalent in almost all types of treatment systems. Conventional WWTPs showed the highest negative removal (NR) for Carbamazepine, and Carbadox. Conjugation-deconjugation, types of WWTPs, transformations, leaching, operational parameters, sampling schemes, and nature of substance governs the NR efficiencies. Among the various categories of micropollutants, pesticides and beta-blockers are reported to exhibit the maximum percentage of NR, posing threat to human and the environment. With > 200% of NR for beta-blockers, low blood-pressure related symptoms may likely to get more prevalent in the near future. Study red-flags this phenomenon of negative removal that needs urgent attention.
Collapse
Affiliation(s)
- Manish Kumar
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India.
| | | | - Kiran Dhangar
- Discipline of Civil Engineering, IIT Gandhinagar, Gujarat 382355, India
| | - Jurgen Mahlknecht
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501, Sur Monterrey 64849, Mexico
| | - Suvendu Manna
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun, Uttarakhand 248007, India
| |
Collapse
|
16
|
Dong Y, Chen F, Li L, Yin Z, Zhang X. Enhanced aerobic granular sludge formation by applying Phanerochaete chrysosporium pellets as induced nucleus. Bioprocess Biosyst Eng 2022; 45:815-828. [PMID: 35318496 DOI: 10.1007/s00449-022-02698-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 11/02/2022]
Abstract
The long start-up period is a major challenging issue for the widespread application of aerobic granular sludge (AGS). In this study, a novel rapid start-up strategy was developed by inoculating Phanerochaete chrysosporium (P. chrysosporium) pellets as the induced nucleus in a sequencing batch airlift reactor (SBAR) to enhance activated sludge granulation. The results demonstrated that P. chrysosporium pellets could effectively shorten the aerobic granulation time from 32 to 20 days. The AGS promoted by P. chrysosporium pellets had a larger average diameter (2.60-2.74 mm) than that without P. chrysosporium pellets (1.78-1.88 mm) and had better biomass retention capacity and sedimentation properties; its mixed liquor suspended solids (MLSS) and sludge volume index (SVI30) reached approximately 5.2 g/L and 45 mL/g, respectively. The addition of P. chrysosporium pellets promoted the secretion of extracellular polymeric substances (EPS), especially protein (PN). The removal efficiencies of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN), and total phosphorus (TP) in P. chrysosporium pellets reactor were 98.91%, 89.17%, 64.73%, and 94.42%, respectively, which were higher than those in the reactor without P. chrysosporium pellets (88.73%, 82.09%, 55.75%, and 88.92%). High throughput sequencing analysis indicated that several functional genera that were responsible for the formation of aerobic granules and the removal of pollutants, such as Acinetobacter, Pseudomonas, Janthinobacterium, and Enterobacter, were found to be predominant in the mature sludge granules promoted by P. chrysosporium pellets.
Collapse
Affiliation(s)
- Yihua Dong
- Key Laboratory of the Ministry of Education for Eco-Restoration of Regional Contaminated Environment, Shenyang University, Shenyang, 110044, Liaoning, China
| | - Feng Chen
- Key Laboratory of the Ministry of Education for Eco-Restoration of Regional Contaminated Environment, Shenyang University, Shenyang, 110044, Liaoning, China
| | - Liang Li
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, Liaoning, China.
| | - Zhiwen Yin
- Key Laboratory of the Ministry of Education for Eco-Restoration of Regional Contaminated Environment, Shenyang University, Shenyang, 110044, Liaoning, China
| | - Xueying Zhang
- Key Laboratory of the Ministry of Education for Eco-Restoration of Regional Contaminated Environment, Shenyang University, Shenyang, 110044, Liaoning, China
| |
Collapse
|
17
|
Pharmaceutical Compounds in Aquatic Environments-Occurrence, Fate and Bioremediation Prospective. TOXICS 2021; 9:toxics9100257. [PMID: 34678953 PMCID: PMC8537644 DOI: 10.3390/toxics9100257] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/01/2021] [Accepted: 10/02/2021] [Indexed: 12/12/2022]
Abstract
Various contaminants of emerging concern (CECs) have been detected in different ecosystems, posing a threat to living organisms and the environment. Pharmaceuticals are among the many CECs that enter the environment through different pathways, with wastewater treatment plants being the main input of these pollutants. Several technologies for the removal of these pollutants have been developed through the years, but there is still a lack of sustainable technologies suitable for being applied in natural environments. In this regard, solutions based on natural biological processes are attractive for the recovery of contaminated environments. Bioremediation is one of these natural-based solutions and takes advantage of the capacity of microorganisms to degrade different organic pollutants. Degradation of pollutants by native microorganisms is already known to be an important detoxification mechanism that is involved in natural attenuation processes that occur in the environment. Thus, bioremediation technologies based on the selection of natural degrading bacteria seem to be a promising clean-up technology suitable for application in natural environments. In this review, an overview of the occurrence and fate of pharmaceuticals is carried out, in which bioremediation tools are explored for the removal of these pollutants from impacted environments.
Collapse
|
18
|
Cui D, Wei N, Ling N, Zheng G, Sun Y, Chen Z, Zou X, Deng H, Li W. Effects of sulfamethoxazole on aerobic sludge granulation process. J Appl Microbiol 2021; 132:1091-1103. [PMID: 34453874 DOI: 10.1111/jam.15267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 07/24/2021] [Accepted: 08/12/2021] [Indexed: 11/30/2022]
Abstract
AIMS Our purpose was to clarify the effect of sulfamethoxazole (SMX) on the start-up period, particle formation, and treatment efficiency of an aerobic granular sludge system. METHODS AND RESULTS We compared an R1 granular sequencing batch reactor (GSBR) started with 5 μg L-1 SMX and an R2 GSBR started without SMX, as a control, to investigate the impact of a trace amount of SMX (5 μg L-1 ) on aerobic granular sludge (AGS) characteristics and the removal of conventional contaminants. AGS granulation in the R1 system was not inhibited by SMX, but the granule particle size was smaller than that in the R2 system. Both systems had good performance removing conventional pollutants. Extracellular polymeric substance secretion in the R1 system was lower than that in the R2 system. After stabilizing reactor operations, the SMX removal efficiency in the R1 system (~73.93%) was higher than that in the R2 system (~70.66%). The start-up modes also determined the differences in the microbial community structure of the AGS systems. CONCLUSIONS SMX-activated AGS performed better than AGS without SMX. SIGNIFICANCE AND IMPACT OF STUDY The study can help engineers determine start-up modes with varieties of antibiotics in AGS processes and provide references for the optimization of water treatment processes.
Collapse
Affiliation(s)
- Di Cui
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Nianpeng Wei
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Na Ling
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Guochen Zheng
- Songliao River Basin Water Resources Protection Bureau, Changchun, People's Republic of China
| | - Yuan Sun
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Zeyi Chen
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Xiang Zou
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Hongna Deng
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China
| | - Wenlan Li
- Pharmaceutical Engineering Technology Research Center, Harbin University of Commerce, Harbin, People's Republic of China.,School of Pharmacy, Harbin University of Commerce, Harbin, People's Republic of China
| |
Collapse
|
19
|
Vinayak V, Khan MJ, Varjani S, Saratale GD, Saratale RG, Bhatia SK. Microbial fuel cells for remediation of environmental pollutants and value addition: Special focus on coupling diatom microbial fuel cells with photocatalytic and photoelectric fuel cells. J Biotechnol 2021; 338:5-19. [PMID: 34245783 DOI: 10.1016/j.jbiotec.2021.07.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/28/2021] [Accepted: 07/05/2021] [Indexed: 12/11/2022]
Abstract
With the advent of global industrialisation and adaptation of smart life there is rise in anthropogenic pollution especially in water. Remediation of the pollutants (such as metals, and dyes) present in industrial effluents is possible via microbes and algae present in the environment. Microbes are used in a microbial fuel cell (MFC) for remediation of various organic and inorganic pollutants. However, for industrial scale application coupling the MFCs with photocatalytic and photoelectric fuel cell has a potential in improving the output of power. It can also be used for remediation of pollutants more expeditiously, conserving fossil fuels, cleaning environment, hence making the coupled hybrid fuel cell to run economically. Furthermore, such MFC inbuilt with algae in living or powder form give additional value addition products like biofuel, polysaccharides, biopolymers, and polyhydroxy alkanoates etc. This review provides bird's eye view on the removal of environmental pollutants by different biological sources like bacteria and algae. The article is focussed on diatoms as potential algae since they are rich source of crude oil and high value added products in a hybrid photocatalytic MFC. It also covers bottle necks, challenges and future in this field of research.
Collapse
Affiliation(s)
- Vandana Vinayak
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, 470003, India
| | - Mohd Jahir Khan
- Diatom Nanoengineering and Metabolism Laboratory (DNM), School of Applied Sciences, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar, Madhya Pradesh, 470003, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat, 382 010, India.
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido, 10326, Republic of Korea
| | - Rijuta Ganesh Saratale
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido, 10326, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| |
Collapse
|
20
|
Xiao L, Li J, Lichtfouse E, Li Z, Wang Q, Liu F. Augmentation of chloramphenicol degradation by Geobacter-based biocatalysis and electric field. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124977. [PMID: 33422734 DOI: 10.1016/j.jhazmat.2020.124977] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/22/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Electroactive microorganisms and electrochemical technologies have been separately used for environmental remediation such as antibiotics removal, yet the efficiency of coupling these two methods for chlorinated antibiotics removal is poorly known. Here we tested the synergy of Geobacter sulfurreducens PCA, an electroactive bacteria, and an electrical field, on chloramphenicol removal. Removal is increased two-fold by increasing the temperature from 30°C to 37°C. The cyclic voltammograms and chronoamperometry tests demonstrated that G. sulfurreducens PCA catalyzed chloramphenicol chemical reduction with electrode as excusive electron donor. A critical voltage, -0.6 to -0.5 V vs. Ag/AgCl, was discovered for chloramphenicol degradation with an increase of removal rate about 2.62-folds, from 31.06% to 81.41%. Combined removal with both G. sulfurreducens PCA and an electrical field increased the apparent rate constant and reached 82.77% removal at -0.5 V. Specially, the combined removal at -0.5 V even presented more robust removal efficiency compared to -0.6 V (78.64%) without G. sulfurreducens PCA. Mass spectrometry of degradation products indicates the reduction of nitro into amine groups, and dechlorination into less toxic compounds. Overall, combined biocatalysis and an electrical field is a promising method to remove antibiotics from polluted environments.
Collapse
Affiliation(s)
- Leilei Xiao
- Key Laboratory of Coastal Biology and Biological Resources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Jiajia Li
- Key Laboratory of Coastal Biology and Biological Resources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Eric Lichtfouse
- Aix-Marseille Univ, CNRS, IRD, INRAE, Coll France, CEREGE, Avenue Louis Philibert, Aix en Provence 13100, France; State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, PR China
| | - Zhenkai Li
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, PR China
| | - Quan Wang
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, PR China
| | - Fanghua Liu
- Key Laboratory of Coastal Biology and Biological Resources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Science, Guangdong Academy of Science, Guangzhou 510650, PR China.
| |
Collapse
|
21
|
Castellanos RM, Bassin JP, Bila DM, Dezotti M. Biodegradation of natural and synthetic endocrine-disrupting chemicals by aerobic granular sludge reactor: Evaluating estrogenic activity and estrogens fate. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 274:116551. [PMID: 33529898 DOI: 10.1016/j.envpol.2021.116551] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/12/2021] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
In this study, the biodegradation of endocrine-disrupting chemicals (EDCs) (namely the natural and synthetic estrogens 17β-estradiol (E2) and 17α-ethinylestradiol (EE2), respectively) was assessed in an aerobic granular sludge (AGS) sequencing batch reactor (SBR) treating simulated domestic sewage. To better understand the fate of these compounds, their concentrations were determined in both liquid and solid (biomass) samples. Throughout the operation of the reactor, subjected to alternating anaerobic and aerated conditions, the removal of the hormones, both present in the influent at a concentration of 20 μg L-1, amounted to 99% (for E2) and 93% (for EE2), with the latter showing higher resistance to biodegradation. Through yeast estrogen screen assays, an average moderate residual estrogenic activity (0.09 μg L-1 EQ-E2) was found in the samples analysed. E2 and EE2 profiles over the SBR cycle suggest a rapid initial adsorption of these compounds on the granular biomass occurring anaerobically, followed by biodegradation under aeration. A possible sequence of steps for the removal of the micropollutants, including the key microbial players, was proposed. Besides the good capability of the AGS on EDCs removal, the results revealed high removal efficiencies (>90%) of COD, ammonium and phosphate. Most of the incoming organics (>80%) were consumed under anaerobic conditions, when phosphate was released (75.2 mgP L-1). Nitrification and phosphate uptake took place along the aeration phase, with effluent ammonium and phosphate levels around 2 mg L-1. Although nitrite accumulation took place over the cycle, nitrate consisted of the main oxidized nitrogen form in the effluent. The specific ammonium and phosphate uptake rates attained in the SBR were found to be 3.3 mgNH4+-N gVSS-1.h-1 and 6.7 mgPO43--P gVSS-1 h-1, respectively, while the specific denitrification rate corresponded to 1.0 mgNOx--N gVSS-1 h-1.
Collapse
Affiliation(s)
- Reynel Martínez Castellanos
- Chemical Engineering Program, COPPE, Federal University of Rio de Janeiro, P.O. Box 68502, 21941-972, Rio de Janeiro, Brazil
| | - João P Bassin
- Chemical Engineering Program, COPPE, Federal University of Rio de Janeiro, P.O. Box 68502, 21941-972, Rio de Janeiro, Brazil.
| | - Daniele M Bila
- Department of Environmental and Sanitary Engineering, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Márcia Dezotti
- Chemical Engineering Program, COPPE, Federal University of Rio de Janeiro, P.O. Box 68502, 21941-972, Rio de Janeiro, Brazil
| |
Collapse
|
22
|
Argenta TS, Barros ARM, de Carvalho CDA, Dos Santos AB, Firmino PIM. Parabens in aerobic granular sludge systems: Impacts on granulation and insights into removal mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 753:142105. [PMID: 33207471 DOI: 10.1016/j.scitotenv.2020.142105] [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: 04/15/2020] [Revised: 08/07/2020] [Accepted: 08/29/2020] [Indexed: 05/06/2023]
Abstract
This work assessed the impact of methylparaben, ethylparaben, propylparaben, and butylparaben (200 μg L-1 each) on the granulation process as well as on the organic matter and nutrient removal of an aerobic granular sludge (AGS) system (6-h cycle). Additionally, some insights into the main paraben removal mechanisms were provided. In the presence of parabens, aerobic granules with good settleability, but with fragile and irregular structure, were grown. No significant effect of parabens on organic matter (>90%) and nitrogen (~70%) removal was evidenced. On the other hand, phosphorus removal was slightly impaired, although high removal efficiencies (~70%) were reached. High paraben removal efficiencies were achieved (>85%) in the AGS system, with methylparaben being the most recalcitrant compound. Concerning the removal mechanisms, biotransformation was the main mechanism in the removal of all parabens (85.5% for methylparaben and 100% for the others), whereas, apparently, adsorption played a role only in the removal of methylparaben. In addition, this compound was also suggested as a probable intermediate of the degradation of the larger alkyl-chain parabens. Lastly, regarding the microbial community, with the exception of Mycobacterium, the reactors shared the same genera, which may explain their comparable operational performances. Additionally, some genera that developed more in the presence of parabens may be related to their degradation. Therefore, although antimicrobial agents such as parabens compromised the granule structure, AGS system maintained a good operational performance and showed to be very efficient in paraben removal.
Collapse
Affiliation(s)
- Thaís Salvador Argenta
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Clara de Amorim de Carvalho
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - André Bezerra Dos Santos
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Paulo Igor Milen Firmino
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| |
Collapse
|
23
|
Mendes Barros AR, Argenta TS, de Amorim de Carvalho C, da Silva Oliveira F, Milen Firmino PI, Bezerra Dos Santos A. Effects of the antibiotics trimethoprim (TMP) and sulfamethoxazole (SMX) on granulation, microbiology, and performance of aerobic granular sludge systems. CHEMOSPHERE 2021; 262:127840. [PMID: 32763570 DOI: 10.1016/j.chemosphere.2020.127840] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/08/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
This work assessed the effect of the antibiotics trimethoprim (TMP) and sulfamethoxazole (SMX) on the granulation process, microbiology, and organic matter and nutrient removal of an aerobic granular sludge (AGS) system. In addition, after the maturation stage, the impact of the redox mediator anthraquinone-2,6-disulfonate (AQDS) (25 μM) on the biotransformation of the antibiotics was evaluated. The reactor R1 was maintained as a control, and the reactor R2 was supplemented with TMP and SMX (200 μg L-1). The ability to remove C, N, and P was similar between the reactors. However, the structural integrity of the AGS was impaired by the antibiotics. Low TMP (∼30%) and SMX (∼60%) removals were achieved when compared to anaerobic or floccular biomass aerobic systems. However, when the system was supplemented with AQDS, an increase in the removal of TMP (∼75%) and SMX (∼95%) was observed, possibly due to the catalytic action of the redox mediator on cometabolic processes. Regarding the microbial groups, whereas Proteobacteria and Bacterioidetes increased, Planctomycetes decreased in both reactors. However, TMP and SMX presence seemed to inhibit or favor some genera during the formation of the granules, possibly due to their bactericidal action.
Collapse
Affiliation(s)
| | - Thaís Salvador Argenta
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Clara de Amorim de Carvalho
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Francisca da Silva Oliveira
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Paulo Igor Milen Firmino
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - André Bezerra Dos Santos
- Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Fortaleza, Ceará, Brazil.
| |
Collapse
|
24
|
Qi K, Li Z, Zhang C, Tan X, Wan C, Liu X, Wang L, Lee DJ. Biodegradation of real industrial wastewater containing ethylene glycol by using aerobic granular sludge in a continuous-flow reactor: Performance and resistance mechanism. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107711] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
25
|
Yu Z, Zhang Y, Zhang Z, Dong J, Fu J, Xu X, Zhu L. Enhancement of PPCPs removal by shaped microbial community of aerobic granular sludge under condition of low C/N ratio influent. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122583. [PMID: 32289623 DOI: 10.1016/j.jhazmat.2020.122583] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/10/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
The frequent occurrence of pharmaceuticals and personal care products (PPCPs) in domestic wastewater has caused great concern. In this study, the removal of two typical pharmaceuticals (Roxithromycin, ROX; Sulfamethoxazole, SMZ) in aerobic granular sludge (AGS) reactors was investigated under condition of different C/N (carbon to nitrogen) ratios. Results showed that higher removal efficiencies of ROX and SMZ (95.2 % and 92.9 %) were achieved in the AGS reactor fed with low C/N influent. Batch experiments further revealed that the removal of ROX was influenced by the adsorption ability of the AGS while SMZ removal was mainly enhanced by biodegradation process. Analysis of extracellular polymeric substances (EPS) showed that the humic acid-like substances were enriched under low C/N condition, which was in accordance with dynamic change of microbial community. The microbes, like Thauera spp. and Xanthomonadaceae, were highly enriched in the reactor with high nitrogen loading rate and functioned as refractory organics degrader. Overall, the AGS process could achieve enhanced pharmaceuticals removal performance by the regulation of microbial community under low C/N influent, which provides insights into a feasible solution for simultaneous removal of nitrogen and trace organic pollutants in AGS reactor.
Collapse
Affiliation(s)
- Zhuodong Yu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Ye Zhang
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Zhiming Zhang
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Jingjing Dong
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Jiashen Fu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China
| | - Xiangyang Xu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; Zhejiang Provincial Engineering Laboratory of Water Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, China
| | - Liang Zhu
- Institute of Environmental Pollution Control and Treatment, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China; Zhejiang Provincial Engineering Laboratory of Water Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, China.
| |
Collapse
|
26
|
Wang L, Yu X, Xiong W, Li P, Wang S, Fan A, Su H. Enhancing robustness of aerobic granule sludge under low C/N ratios with addition of kitchen wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 265:110503. [PMID: 32421552 DOI: 10.1016/j.jenvman.2020.110503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 02/27/2020] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Aerobic granular sludge (AGS) is one of the most promising biotechnologies for wastewater treatment. However, the instability of AGS at low carbon to nitrogen (C/N) ratios limited its application. In this study, kitchen wastewater addition in the influent was found to improve the morphology, characteristics, and treatment performance of AGS at low C/N ratios of 10, 5 and 2, which strongly reduced the negative impact of low C/N ratios on the biomass concentration, settleability, EPS secretion, stability and performance of AGS. At C/N ratio of 2, sludge disintegration was observed in RA with synthetic wastewater as influent, while the sludge in RB was able to keep a compact microbial structure with particle size of 1.0-1.5 mm. When C/N ratio decreased from 20 to 2 (phase 1 to 4), the MLSS, SVI and EPS secretion in RB were negatively affected at the beginning of each phase, but recovered to 4800 mg L-1, 60 mL g-1, and 86 mg/g SS at the end of phase 4 (C/N ratio of 2), which were 1.3, 0.6 and 1.3 times of those in RA, respectively. Meanwhile, the removal efficiencies of COD, TN, TP and NH4+-N in RB were 90%, 73%, 53%, and 99% at the end of phase 4, which were 1.1, 1.2, 2.2 and 2.4 times of those in RA, respectively. Thus, high-performance AGS with enhanced robustness and high abundance of HN-AD functional bacteria Paracoccus was obtained. These findings provided a promising and cost-effective method to improve the long-term stability and performance of AGS dealing with wastewater of low C/N ratio.
Collapse
Affiliation(s)
- Luxi Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Xijia Yu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Wei Xiong
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Ping Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Shaojie Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Aili Fan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Haijia Su
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China.
| |
Collapse
|
27
|
Li H, Cai Y, Gu Z, Yang YL, Zhang S, Yang XL, Song HL. Accumulation of sulfonamide resistance genes and bacterial community function prediction in microbial fuel cell-constructed wetland treating pharmaceutical wastewater. CHEMOSPHERE 2020; 248:126014. [PMID: 31995737 DOI: 10.1016/j.chemosphere.2020.126014] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 05/12/2023]
Abstract
Microbial fuel cell constructed wetlands (CW-MFCs) with different circuit operation conditions and hydraulic retention time (HRT) were constructed to evaluate their ability to remove and accumulate pharmaceutical and personal care products (PPCPs) (sulfadiazine (SDZ), carbamazepine (CBZ), naproxen (NPX) and ibuprofen (IBP)) during four months running process. The abundance level of corresponding sulfonamide antibiotic resistance genes (ARGs) was also investigated. The results showed that closed circuit operation of CW-MFC contributed to the decrease in mass loading of COD, NH4+-N, PPCPs, and wastewater toxicity in the effluent. Additionally, closed circuit operation with low HRT contributed to enhancing selected PPCP mass accumulation on electrodes by electro-adsorption, and thus the higher sulfonamide ARG abundance was detected in the electrodes and effluent. Moreover, the composition of bacteria was greatly influenced by the mass accumulation of PPCPs revealed by redundancy analysis results. Procrustes analysis results further demonstrated that bacterial community contributed greatly to the ARGs profiles. Therefore, ARGs with their host bacteria revealed by network analysis were partially deposited on electrode substrates, and thus ARGs were effectively accumulated on electrodes. Function analysis of the bacterial community from PICRUSt predicted metagenomes revealed that closed circuit mode enhanced the abundances of the function genes of metabolic and the multiple ARGs, suggesting that closed circuit operation exhibited positive effects on metabolic process and ARG accumulation in CW-MFC system.
Collapse
Affiliation(s)
- Hua Li
- School of Energy and Environment, Southeast University, Nanjing, 210096, PR China.
| | - Yun Cai
- School of Environment, Nanjing Normal University, Jiangsu Centre for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, PR China.
| | - Zuli Gu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, PR China.
| | - Yu-Li Yang
- School of Environment, Nanjing Normal University, Jiangsu Centre for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, PR China.
| | - Shuai Zhang
- School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, PR China.
| | - Xiao-Li Yang
- School of Civil Engineering, Southeast University, Nanjing, 210096, PR China.
| | - Hai-Liang Song
- School of Environment, Nanjing Normal University, Jiangsu Centre for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Nanjing, 210023, PR China.
| |
Collapse
|
28
|
Morinaga K, Yoshida K, Takahashi K, Nomura N, Toyofuku M. Peculiarities of biofilm formation by Paracoccus denitrificans. Appl Microbiol Biotechnol 2020; 104:2427-2433. [PMID: 32002601 PMCID: PMC7223048 DOI: 10.1007/s00253-020-10400-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/16/2020] [Accepted: 01/20/2020] [Indexed: 01/24/2023]
Abstract
Most bacteria form biofilms, which are thick multicellular communities covered in extracellular matrix. Biofilms can become thick enough to be even observed by the naked eye, and biofilm formation is a tightly regulated process. Paracoccus denitrificans is a non-motile, Gram-negative bacterium that forms a very thin, unique biofilm. A key factor in the biofilm formed by this bacterium is a large surface protein named biofilm-associated protein A (BapA), which was recently reported to be regulated by cyclic diguanosine monophosphate (cyclic-di-GMP or c-di-GMP). Cyclic-di-GMP is a major second messenger involved in biofilm formation in many bacteria. Though cyclic-di-GMP is generally reported as a positive regulatory factor in biofilm formation, it represses biofilm formation in P. denitrificans. Furthermore, quorum sensing (QS) represses biofilm formation in this bacterium, which is also reported as a positive regulator of biofilm formation in most bacteria. The QS signal used in P. denitrificans is hydrophobic and is delivered through membrane vesicles. Studies on QS show that P. denitrificans can potentially form a thick biofilm but maintains a thin biofilm under normal growth conditions. In this review, we discuss the peculiarities of biofilm formation by P. denitrificans with the aim of deepening the overall understanding of bacterial biofilm formation and functions.
Collapse
Affiliation(s)
- Kana Morinaga
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
| | - Keitaro Yoshida
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, 2-17-2-1, Tsukisamu-higashi, Toyohira-ku, Sapporo, Japan
| | - Kohei Takahashi
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Nobuhiko Nomura
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
- Microbiology Research Center for Sustainability (MiCS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Masanori Toyofuku
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan.
- Microbiology Research Center for Sustainability (MiCS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan.
| |
Collapse
|
29
|
He K, Asada Y, Echigo S, Itoh S. Biodegradation of pharmaceuticals and personal care products in the sequential combination of activated sludge treatment and soil aquifer treatment. ENVIRONMENTAL TECHNOLOGY 2020; 41:378-388. [PMID: 30010496 DOI: 10.1080/09593330.2018.1499810] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 07/08/2018] [Indexed: 06/08/2023]
Abstract
Soil aquifer treatment (SAT), applied after activated sludge treatment (AST), has been widely used for wastewater reclamation. AST and SAT show potential for removing micropollutants, including pharmaceuticals and personal care products (PPCPs). However, the role of sequential combination of AST and SAT on the biodegradation of PPCPs was not clear in previous studies. In this study, the removal characteristics of PPCPs in AST and SAT were evaluated to assess the legitimacy of sequential combination of AST and SAT. SAT showed effective removals of antibiotics (> 80%), including fluoroquinolones and macrolides by sorption, but poor removals of amide pharmaceuticals (i.e. carbamazepine and crotamiton) were observed in both AST and SAT. Additionally, biodegradation contributed to the effective removal of carboxylic PPCPs (i.e. ketoprofen and gemfibrozil) in both ASTs and SAT, but effective biodegradation of halogenated acid and polycyclic aromatic compounds (i.e. clofibric acid and naproxen) was observed only in SAT (82.1% and 81.8%, respectively). Furthermore, the microbial substrate metabolic patterns showed that amino acids, amines, and polymers were biodegradable in SAT, which was fit for the biodegradation characteristics of PPCPs in SAT. For microbial communities, Proteobacteria were dominant in AST and SAT, but Acidobacteria and Actinobacteria were more abundant in SAT than AST, which could contribute to the effective removals of halogenated acid in SAT. Considering PPCP biodegradation and substrate metabolism, SAT displays a wider range on the biodegradation than AST. Therefore, we conclude that these two processes can complement each other when used for controlling PPCPs.
Collapse
Affiliation(s)
- Kai He
- Research Centre for Environmental Quality Management, Kyoto University, Otsu, Shiga, Japan
| | - Yasuhiro Asada
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto, Japan
- Department of Environmental Health, National Institute of Public Health, Wako, Saitama, Japan
| | - Shinya Echigo
- Department of Environmental Health, National Institute of Public Health, Wako, Saitama, Japan
| | - Sadahiko Itoh
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, Nishikyo, Kyoto, Japan
| |
Collapse
|
30
|
Kedves A, Sánta L, Balázs M, Kesserű P, Kiss I, Rónavári A, Kónya Z. Chronic responses of aerobic granules to the presence of graphene oxide in sequencing batch reactors. JOURNAL OF HAZARDOUS MATERIALS 2019; 389:121905. [PMID: 31874760 DOI: 10.1016/j.jhazmat.2019.121905] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 02/07/2023]
Abstract
The chronic responses of aerobic granular sludge (AGS) to the presence of graphene oxide nanoparticles (GO NPs) (5, 15, 25, 35, 45, 55, 65, 75, 85, and 95 mg/L of GO NPs for 7 days) during biological wastewater treatment processes were investigated. Bioreactor performance, extracellular polymeric substance (EPS) secretion, and microbial community characteristics were assessed. The results showed that the effects of GO NPs on bioreactor performances were dependent on the dose applied and the duration for which it was applied. At concentrations of 55, 75, and 95 mg/L, GO NPs considerably inhibited the efficiency of organic matter and ammonia removal; however, nitrite and nitrate removal rates were unchanged. Biological phosphorus removal decreased even when only low concentrations of GO NPs were used. The secretion of EPS, which could alleviate the toxicity of GO NPs, also changed. The increased amount of nanoparticles also resulted in significant changes to the bacterial community structure. Based on the amplicon sequencing of 16S rRNA genes, Paracoccus sp., Klebsiella sp., and Acidovorax species were identified as the most tolerant strains.
Collapse
Affiliation(s)
- Alfonz Kedves
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary
| | - Levente Sánta
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary
| | - Margit Balázs
- Bay Zoltán Nonprofit Ltd. for Applied Research, BAY-BIO Division for Biotechnology, Szeged, Hungary
| | - Péter Kesserű
- Bay Zoltán Nonprofit Ltd. for Applied Research, BAY-BIO Division for Biotechnology, Szeged, Hungary
| | - István Kiss
- Bay Zoltán Nonprofit Ltd. for Applied Research, BAY-BIO Division for Biotechnology, Szeged, Hungary
| | - Andrea Rónavári
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary
| | - Zoltán Kónya
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary; MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, Szeged, Hungary.
| |
Collapse
|
31
|
Mery-Araya C, Lear G, Perez-Garcia O, Astudillo-Garcia C, Singhal N. Using carbon substrate as a selection pressure to enhance the potential of aerobic granular sludge microbial communities for removing contaminants of emerging concern. BIORESOURCE TECHNOLOGY 2019; 290:121705. [PMID: 31295574 DOI: 10.1016/j.biortech.2019.121705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/20/2019] [Accepted: 06/26/2019] [Indexed: 06/09/2023]
Abstract
The ability of aerobic granular sludge (AGS) technology to biotransform contaminants of emerging concern (CECs) is largely unknown. AGS supplemented with either acetate, 2-propanol, glycerol, or a 1:1:1 mixture of all three, were cultivated to investigate the link between carbon supplements and biotransformation of six CECs. Carbon substrate had a significant effect on the microbial community composition, as assessed by 16S rRNA gene sequence analyses. Substrate degradation requiring a larger number of catabolic reactions (i.e., glycerol and the mix) was associated with greater microbial richness. The biotransformation of CECs was 45.9% greater in communities supplemented with glycerol (60.3 ± 30.2 µg L-1 VSS-1) compared to acetate (20.9 ± 29.7 µg L-1 VSS-1). Database surveys of metabolic reactions indicate that microbial communities supplemented with glycerol have the greatest capacity for the degradation of aromatic compounds, while those supplemented with acetate community have the lowest.
Collapse
Affiliation(s)
- Camila Mery-Araya
- Department of Civil and Environmental Engineering, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand; Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, P.O. Box 110-V, Valparaíso, Chile.
| | - Gavin Lear
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
| | - Octavio Perez-Garcia
- Department of Civil and Environmental Engineering, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Carmen Astudillo-Garcia
- Departamento de Ingeniería Química y Ambiental, Universidad Técnica Federico Santa María, P.O. Box 110-V, Valparaíso, Chile
| | - Naresh Singhal
- Department of Civil and Environmental Engineering, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| |
Collapse
|
32
|
Wang X, Shen J, Kang J, Zhao X, Chen Z. Mechanism of oxytetracycline removal by aerobic granular sludge in SBR. WATER RESEARCH 2019; 161:308-318. [PMID: 31203036 DOI: 10.1016/j.watres.2019.06.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
In this study, oxytetracycline (OTC) as a target pollutant in swine wastewater was removed by aerobic granular sludge (AGS). The removal rate of 300 μg/L OTC in aerobic granular sludge sequencing batch reactor (AGSBR) increased to 88.00% in 33 days and maintained stable. The chemical oxygen demand (COD), ammonium nitrogen (NH4+-N) and total phosphorus (TP) in wastewater were also efficiently removed. The removal of OTC mainly depended on the adsorption and biodegradation of AGS, and the biodegradation was increased obviously after AGS adaptation to OTC. The degradation products of OTC were analyzed by mass spectrometry. The analysis of metagenome sequencing revealed that the enzymes, such as glycosyl transferases (GTs), polysaccharide lyases (PLs) and auxiliary activities (AAs), may play an important role in the removal of OTC. The Lefse analysis showed that the Flavobacteriia, Flavobacteriales, Cryomorphaceae and Fluviicola were four kinds of microbes with significant difference in OTC feed reactor, which are considered to be drug-resistant bacteria in AGSBR. Furthermore, the dynamics of microbial community changed significantly at three levels, including the enrichment of drug-resistant microorganisms and the microorganisms that gradually reduced or even disappeared under the pressure of OTC.
Collapse
Affiliation(s)
- Xiaochun Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jimin Shen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jing Kang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Xia Zhao
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
| | - Zhonglin Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| |
Collapse
|
33
|
Khan MF, Yu L, Tay JH, Achari G. Coaggregation of bacterial communities in aerobic granulation and its application on the biodegradation of sulfolane. JOURNAL OF HAZARDOUS MATERIALS 2019; 377:206-214. [PMID: 31163349 DOI: 10.1016/j.jhazmat.2019.05.076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/09/2019] [Accepted: 05/26/2019] [Indexed: 06/09/2023]
Abstract
Aerobic granulation is regarded as the future technology for wastewater treatment that can replace conventional activated sludge. In this study, two approaches of forming sulfolane degrading aerobic granules (SDAG) were successfully developed and evaluated. These include adaptation of pre-grown granules to sulfolane environment and coaggregation of pre-grown granules with bacterial culture native to sulfolane contaminated site. The adaption method required a longer period to form robust SDAG compared to coaggregation method where degradation of sulfolane was observed within 24 h. Electronic images revealed dominant filamentous bacteria on the surface of granules while DNA analysis unveiled the complexity of the dynamic change of microbial community during aerobic granule formation. The rate of sulfolane degradation by coaggregated granules reduced as the concentration of carbon source increased, nevertheless, the rate increased with increased biomass. In addition, the presence of co-contaminants can slightly impact the ability of newly cultivated granules to degrade sulfolane. Finally, the stability and settleability of the new aerobic granules was investigated under different environmental conditions. About 30% of the aerobic granules were lost after 14 d of operation without any continuous supply of carbon sources. The surviving SDAGs continued to display an intact structure coupled with good settleability.
Collapse
Affiliation(s)
- Muhammad Faizan Khan
- Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada
| | - Linlong Yu
- Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada
| | - Joo Hwa Tay
- Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada
| | - Gopal Achari
- Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.
| |
Collapse
|
34
|
Oberoi AS, Jia Y, Zhang H, Khanal SK, Lu H. Insights into the Fate and Removal of Antibiotics in Engineered Biological Treatment Systems: A Critical Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7234-7264. [PMID: 31244081 DOI: 10.1021/acs.est.9b01131] [Citation(s) in RCA: 362] [Impact Index Per Article: 72.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Antibiotics, the most frequently prescribed drugs of modern medicine, are extensively used for both human and veterinary applications. Antibiotics from different wastewater sources (e.g., municipal, hospitals, animal production, and pharmaceutical industries) ultimately are discharged into wastewater treatment plants. Sorption and biodegradation are the two major removal pathways of antibiotics during biological wastewater treatment processes. This review provides the fundamental insights into sorption mechanisms and biodegradation pathways of different classes of antibiotics with diverse physical-chemical attributes. Important factors affecting sorption and biodegradation behavior of antibiotics are also highlighted. Furthermore, this review also sheds light on the critical role of extracellular polymeric substances on antibiotics adsorption and their removal in engineered biological wastewater treatment systems. Despite major advancements, engineered biological wastewater treatment systems are only moderately effective (48-77%) in the removal of antibiotics. In this review, we systematically summarize the behavior and removal of different antibiotics in various biological treatment systems with discussion on their removal efficiency, removal mechanisms, critical bioreactor operating conditions affecting antibiotics removal, and recent innovative advancements. Besides, relevant background information including antibiotics classification, physical-chemical properties, and their occurrence in the environment from different sources is also briefly covered. This review aims to advance our understanding of the fate of various classes of antibiotics in engineered biological wastewater treatment systems and outlines future research directions.
Collapse
Affiliation(s)
| | - Yanyan Jia
- Department of Civil and Environmental Engineering , The Hong Kong University of Science and Technology , Clear Water Bay , Hong Kong
| | | | - Samir Kumar Khanal
- Department of Molecular Biosciences and Bioengineering , University of Hawaii at Ma̅noa , 1955 East-West Road , Honolulu , Hawaii 96822 , United States
| | | |
Collapse
|
35
|
Wang XC, Chen ZL, Kang J, Zhao X, Shen JM, Yang L. The key role of inoculated sludge in fast start-up of sequencing batch reactor for the domestication of aerobic granular sludge. J Environ Sci (China) 2019; 78:127-136. [PMID: 30665631 DOI: 10.1016/j.jes.2018.08.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 06/09/2023]
Abstract
Two types of inoculated sludges, granular sludge that had been stored at -20°C and activated sludge, were investigated for the domestication of aerobic granular sludges (AGSs) in sequencing batch reactors (SBRs). The results showed that using the stored granular sludge as inoculation sludge could effectively shorten the domestication time of AGS and yielded mature granular sludge after 22 days of operation. The AGS domesticated by stored granular sludge had better biomass and sedimentation properties; its MLSS and SVI reached 8.55 g/L and 35.27 mL/g, respectively. The removal efficiencies for chemical oxygen demand (COD), ammonium nitrogen (NH4+-N) and total phosphorus (TP) reached 90.76%, 97.39% and 96.40%, respectively. By contrast, 54 days were needed to obtain mature granules using activated sludge. The microbial community structure was probed by using scanning electron microscopy (SEM) and high-throughput sequencing. The results showed that the diversity of the microbial community in mature granules was reduced when stored granular sludge rather than activated sludge was employed as inoculation sludge, and the dominant microbes were changed. The dominant species in mature granules domesticated using stored granular sludge were Zoogloea, Acidovorax and Tolumonas at the genus classification level, while the dominant species were Zoogloea and TM7-genera in granules developed from activated sludge.
Collapse
Affiliation(s)
- Xiao-Chun Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Zhong-Lin Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jing Kang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Xia Zhao
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
| | - Ji-Min Shen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Liu Yang
- College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
| |
Collapse
|
36
|
Kent J, Tay JH. Treatment of 17α‑ethinylestradiol, 4‑nonylphenol, and carbamazepine in wastewater using an aerobic granular sludge sequencing batch reactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 652:1270-1278. [PMID: 30586813 DOI: 10.1016/j.scitotenv.2018.10.301] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 08/28/2018] [Accepted: 10/22/2018] [Indexed: 06/09/2023]
Abstract
This study quantifies the removal of a mixture of commonly detected emerging contaminants, 17α‑ethinylestradiol (EE2), 4‑nonylphenol (NP), and carbamazepine (CBZ) from synthetic wastewater using aerobic granular sludge in a sequential batch reactor. The emerging contaminant concentration in the influent wastewater was maintained near 500 μg/L for the duration of the experiment. Removal of EE2, NP, and CBZ is comprised of both adsorption and degradation. In general, the main removal mechanism for the emerging contaminants was initially adsorption, however it transitions to degradation as the adsorption capacity is saturated. The stabilized degradation for EE2 and NP in the SBR, was 16.09 μg/g and 20.05 μg/g, respectively. There was limited degradation of CBZ during the anaerobic phase. Both the Langmuir and Freundlich adsorption isotherms fit the data well and constants for the equations are calculated. The constants for the Langmuir Isotherm are found to be (X/m)max = 36.23, b = 0.0019 for EE2 and (X/m)max = 44.25, b = 0.0004 for CBZ. None of the tested compounds were found to be detrimental to the performance of the aerobic granules, and high macronutrient removal efficiency was maintained. The granule sludge bed and particle size were not negatively affected by EE2 and NP, however, carbamazepine appeared to interfere with the mechanism of granule formation resulting in a decrease in particle size during the experiment.
Collapse
Affiliation(s)
- Jordan Kent
- Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
| | - Joo Hwa Tay
- Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| |
Collapse
|
37
|
Li H, Zhang S, Yang XL, Yang YL, Xu H, Li XN, Song HL. Enhanced degradation of bisphenol A and ibuprofen by an up-flow microbial fuel cell-coupled constructed wetland and analysis of bacterial community structure. CHEMOSPHERE 2019; 217:599-608. [PMID: 30445405 DOI: 10.1016/j.chemosphere.2018.11.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/01/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
This study aims to demonstrate that an up-flow microbial fuel cell-coupled constructed wetland (UCW-MFC) can effectively treat synthetic wastewater that contains a high concentration of pharmaceutical and personal care products (PPCPs, 10 mg L-1 level), such as ibuprofen (IBP) and bisphenol A (BPA). A significant decline in chemical oxygen demand (COD) and ammonia nitrogen (NH4+-N) removal was observed when BPA was added, which indicated that BPA was more toxic to bacteria. The closed circuit operation of UCW-MFC performed better than the open circuit mode for COD and NH4+-N removal. Similarly, the removal rates of IBP and BPA were increased by 9.3% and 18%, respectively, compared with the open circuit mode. The majority of PPCPs were removed from the bottom and anode layer, which accounted for 63.2-78.7% of the total removal. The main degradation products were identified. The removal rates of IBP and BPA decreased by 14.6% and 23.7% due to a reduction in the hydraulic detention times (HRTs) from 16 h to 4 h, respectively. Electricity generation performance, including voltage and maximum power density, initially increased and then declined with a decrease in the HRT. Additionally, both the current circuit operation mode and the HRT have an impact on the bacterial community diversity of the anode according to the results of high-throughput sequencing. The possible bacterial groups involved in PPCP degradation were identified. In summary, UCW-MFC is suitable for enabling the simultaneous removal of IBP and BPA and successful electricity production.
Collapse
Affiliation(s)
- Hua Li
- School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| | - Shuai Zhang
- School of Energy and Environment, Southeast University, Nanjing, 210096, China; School of Environment, Nanjing Normal University, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Wenyuan Road 1, Nanjing, 210023, China.
| | - Xiao-Li Yang
- School of Civil Engineering, Southeast University, Nanjing, 210096, China.
| | - Yu-Li Yang
- School of Environment, Nanjing Normal University, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Wenyuan Road 1, Nanjing, 210023, China; School of Civil Engineering, Southeast University, Nanjing, 210096, China.
| | - Han Xu
- School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| | - Xian-Ning Li
- School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| | - Hai-Liang Song
- School of Environment, Nanjing Normal University, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Engineering Lab of Water and Soil Eco-remediation, Wenyuan Road 1, Nanjing, 210023, China.
| |
Collapse
|
38
|
Iranzo M, Gamón M, Boluda R, Mormeneo S. Analysis of pharmaceutical biodegradation of WWTP sludge using composting and identification of certain microorganisms involved in the process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 640-641:840-848. [PMID: 29879670 DOI: 10.1016/j.scitotenv.2018.05.366] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Pharmaceuticals (PhCs) are organic contaminants that have been detected in wastewater, surface water, and soils throughout the world. The presence of 10 commonly used PhCs in Spain (azithromycin, benzylpenicillin, citalopram, fluconazole, fluoxetine, ibuprofen, irbesartan, olanzapine, telmisartan, and venlafaxine) was analysed at four wastewater treatment plants, and the changes in their concentrations during treatment were assessed. Although certain some PhCs were degraded in the treated water, their presence in sewage sludge increased in all cases. The sewage sludge was composted using rice straw to degrade the PhCs, and the composting efficiency was modified by changes in the relative C/N ratio of the composting blend. Using a simple microbiological culture process for enrichment, 11 different strains of microorganisms that degraded specific PhCs were identified. Ibuprofen and azithromycin were metabolized by one and four strains, respectively, and both PhCs were used as a carbon source; in addition, six strains used irbesartan as a nitrogen source.
Collapse
Affiliation(s)
- María Iranzo
- Department of Microbiology, Faculty of Pharmacy, University of Valencia, Avda, Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain.
| | - Miguel Gamón
- Agricofood Laboratory, GVA, C/ Pintor Goya 8, 46100 Burjassot, Valencia, Spain
| | - Rafael Boluda
- Department of Plant Biology, Faculty of Pharmacy, University of Valencia, Avda, Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| | - Salvador Mormeneo
- Department of Microbiology, Faculty of Pharmacy, University of Valencia, Avda, Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
| |
Collapse
|
39
|
Vasiliadou IA, Molina R, Martinez F, Melero JA, Stathopoulou PM, Tsiamis G. Toxicity assessment of pharmaceutical compounds on mixed culture from activated sludge using respirometric technique: The role of microbial community structure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 630:809-819. [PMID: 29494982 DOI: 10.1016/j.scitotenv.2018.02.095] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 02/08/2018] [Accepted: 02/08/2018] [Indexed: 06/08/2023]
Abstract
Micropollutants of emerging concern such as pharmaceuticals can significantly affect the performance of secondary biological processes in wastewater treatment plants. The present study is aimed to evaluate the toxicity and inhibition of three pharmaceutical compounds (caffeine, sulfamethoxazole and carbamazepine) on two cultures of microbial consortia enriched from wastewater aerobic activated sludge. One of them was acclimated to pharmaceuticals and the other was non-acclimated as control bioassay. The toxic and inhibitory effects on these cultures were assessed by respirometric tests through the oxygen uptake rate as an indicator of their capacity to degrade a readily available carbon source. Higher values of toxicity and inhibition of pharmaceutical compounds were observed for the control culture as compared to the acclimated one. Sulfamethoxazole and carbamazepine exhibited higher toxicity and inhibition effects than caffeine in both acclimated and control cultures. The microbial diversity of the two cultures was also studied. The composition of microbial community of acclimated and control cultures, was determined by targeting the 16S ribosomal RNA gene. It was observed that Proteobacteria was the most abundant phylum, with Gammaproteobacteria dominating both cultures. Control culture was dominated by Gammaproteobacteria and mostly by the genera Pseudomonas and Sodalis, which belong to common families present in wastewater. Results suggested that the acclimated culture to the three pharmaceuticals was mostly comprised of the extremely multiresistant genera Escherichia-Shigella (38%) of Gammaproteobacteria, resulting to higher resistance as compared to the control culture (Escherichia-Shigella, 7%). Finally, the microbial structure of the microorganisms present in a real bioreactor, which was initially seeded with the acclimated culture and fed in a continuous mode with the selected pharmaceuticals, was also analyzed. The continuous loading of pharmaceuticals in the bioreactor affected its microbial diversity, leading to the dominance of Betaproteobacteria and to the resistant genus Rhizobium of Alphaproteobacteria.
Collapse
Affiliation(s)
- I A Vasiliadou
- Department of Chemical and Environmental Technology, School of Experimental Sciences and Technology (ESCET), Rey Juan Carlos University, Móstoles, Madrid, Spain.
| | - R Molina
- Department of Chemical and Environmental Technology, School of Experimental Sciences and Technology (ESCET), Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - F Martinez
- Department of Chemical and Environmental Technology, School of Experimental Sciences and Technology (ESCET), Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - J A Melero
- Department of Chemical and Environmental Technology, School of Experimental Sciences and Technology (ESCET), Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - P M Stathopoulou
- Department of Environmental and Natural Resources Management, University of Patras, Agrinio, Greece
| | - G Tsiamis
- Department of Environmental and Natural Resources Management, University of Patras, Agrinio, Greece
| |
Collapse
|
40
|
Zheng XY, Lu D, Wang MY, Chen W, Zhou G, Zhang Y. Effect of chromium (VI) on the multiple nitrogen removal pathways and microbial community of aerobic granular sludge. ENVIRONMENTAL TECHNOLOGY 2018; 39:1682-1696. [PMID: 28562229 DOI: 10.1080/09593330.2017.1337230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 05/26/2017] [Indexed: 06/07/2023]
Abstract
The frequent appearance of Cr(VI) significantly impacts the microbial metabolism in wastewater. In this study, long-term effects of Cr(VI) on microbial community, nitrogen removal pathways and mechanism of aerobic granular sludge (AGS) were investigated. AGS had strong resistance ability to 1.0 mg/L Cr(VI). 3.0 mg/L Cr(VI) increased the heterotrophic-specific ammonia uptake rate (HSAUR) and heterotrophic-specific nitrate uptake rate (HSNUR) transiently, whereas 5.0 mg/L Cr(VI) sharply decreased the specific ammonia uptake rate (SAUR), specific nitrate uptake rate (SNUR) and simultaneous nitrification denitrification rate (SNDR). It was found that Cr (VI) has a greater inhibitory effect on autotrophic nitrification (ASAUR), and the maximal inhibition rate (IR) was 139.19%. Besides, the inhibition of Cr (VI) on nitrogen removal process belongs to non-competitive inhibition. Cr(VI) had a weaker negative impact on heterotrophic bacteria compared with that on autotrophic bacteria. Denaturing gradient gel electrophoresis analyses suggest that Acidovorax sp., flavobacterium sp., uncultured soil bacterium, uncultured nitrosospira sp., uncultured prokaryote, uncultured β-proteobacterium and uncultured pseudomonas sp. were the dominant species. The inhibition of Cr(VI) on nitrite-oxidizing bacteria was the strongest, followed by ammonia-oxidizing bacteria and denitrifying bacteria. Linear correlations between bacterial count and biomass-specific uptake rate were observed when the Cr(VI) concentration exceeded 3 mg/L. This study revealed the effect of Cr(VI) on nitrification is more serious than that on denitrification. Autotrophic and heterotrophic nitrification, heterotrophic denitrification and simultaneous nitrification denitrification played a significant role on nitrogen removal under Cr(VI) stress.
Collapse
Affiliation(s)
- Xiao-Ying Zheng
- a Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes , Hohai University , Nanjing , People's Republic of China
- b College of Environment , Hohai University , Nanjing , People's Republic of China
| | - Dan Lu
- b College of Environment , Hohai University , Nanjing , People's Republic of China
| | - Ming-Yang Wang
- b College of Environment , Hohai University , Nanjing , People's Republic of China
| | - Wei Chen
- a Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes , Hohai University , Nanjing , People's Republic of China
- b College of Environment , Hohai University , Nanjing , People's Republic of China
| | - Gan Zhou
- b College of Environment , Hohai University , Nanjing , People's Republic of China
| | - Yuan Zhang
- b College of Environment , Hohai University , Nanjing , People's Republic of China
| |
Collapse
|
41
|
Xia J, Ye L, Ren H, Zhang XX. Microbial community structure and function in aerobic granular sludge. Appl Microbiol Biotechnol 2018; 102:3967-3979. [PMID: 29550989 DOI: 10.1007/s00253-018-8905-9] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 02/22/2018] [Accepted: 02/26/2018] [Indexed: 12/28/2022]
Abstract
Aerobic granular sludge (AGS), a self-immobilized microbial consortium containing different functional microorganisms, is receiving growing attention, since it has shown great technological and economical potentials in the field of wastewater treatment. Microbial community is crucial for the formation, stability, and pollutant removal efficiency of aerobic granules. This mini-review systematically summarizes the recent findings of the microbial community structure and function of AGS and discusses the new research progress in the microbial community dynamics during the granulation process and spatial distribution patterns of the microbiota in AGS. The presented information may be helpful for the in-depth theoretical study and practical application of AGS technology in the future.
Collapse
Affiliation(s)
- Juntao Xia
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Lin Ye
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China.
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Xu-Xiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China.
| |
Collapse
|
42
|
Amorim CL, Alves M, Castro PML, Henriques I. Bacterial community dynamics within an aerobic granular sludge reactor treating wastewater loaded with pharmaceuticals. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:905-912. [PMID: 28968945 DOI: 10.1016/j.ecoenv.2017.09.060] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/18/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
Pharmaceuticals are micropollutants often present in wastewater treatment systems. In this study, the potential impact of such micropollutants on the bacterial population within aerobic granular sludge (AGS) bioreactor was investigated. The AGS bacterial community structure and composition were accessed combining DGGE fingerprinting and barcoded pyrosequencing analysis. Both revealed the existence of a dynamic bacterial community, independently of the pharmaceuticals presence. The AGS microbiome at both phylum and class levels varied over time and, after stopping pharmaceuticals feeding, the bacterial community did not return to its initial composition. Nevertheless, most of the assigned OTUs were present throughout the different operational phases. This core microbiome, represented by over 72% of the total sequences in each phase, probably played an important role in biological removal processes, avoiding their failure during the disturbance period. Quantitative-PCR revealed that pharmaceuticals load led to gradual changes on the abundance of ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB) and polyphosphate-accumulating organisms (PAO) but their persistence during that phase demonstrated the resilience of such bacterial groups. AGS microbiome changed over time but a core community was maintained, probably ensuring the accomplishment of the main biological removal processes.
Collapse
Affiliation(s)
- Catarina L Amorim
- Biology Department and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal.
| | - Marta Alves
- Biology Department and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Paula M L Castro
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital 172, 4200-374 Porto, Portugal.
| | - Isabel Henriques
- Biology Department and CESAM, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| |
Collapse
|
43
|
Mesdaghinia A, Ghahremani MH, Nabizadeh R, Nasseri S, Rafiee M. Role of CODPCP/CODTotal ratio on p-chlorophenol toxicity towards aerobic granular sludge. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.06.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
44
|
Szabó E, Liébana R, Hermansson M, Modin O, Persson F, Wilén BM. Microbial Population Dynamics and Ecosystem Functions of Anoxic/Aerobic Granular Sludge in Sequencing Batch Reactors Operated at Different Organic Loading Rates. Front Microbiol 2017; 8:770. [PMID: 28507540 PMCID: PMC5410608 DOI: 10.3389/fmicb.2017.00770] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 04/13/2017] [Indexed: 11/13/2022] Open
Abstract
The granular sludge process is an effective, low-footprint alternative to conventional activated sludge wastewater treatment. The architecture of the microbial granules allows the co-existence of different functional groups, e.g., nitrifying and denitrifying communities, which permits compact reactor design. However, little is known about the factors influencing community assembly in granular sludge, such as the effects of reactor operation strategies and influent wastewater composition. Here, we analyze the development of the microbiomes in parallel laboratory-scale anoxic/aerobic granular sludge reactors operated at low (0.9 kg m-3d-1), moderate (1.9 kg m-3d-1) and high (3.7 kg m-3d-1) organic loading rates (OLRs) and the same ammonium loading rate (0.2 kg NH4-N m-3d-1) for 84 days. Complete removal of organic carbon and ammonium was achieved in all three reactors after start-up, while the nitrogen removal (denitrification) efficiency increased with the OLR: 0% at low, 38% at moderate, and 66% at high loading rate. The bacterial communities at different loading rates diverged rapidly after start-up and showed less than 50% similarity after 6 days, and below 40% similarity after 84 days. The three reactor microbiomes were dominated by different genera (mainly Meganema, Thauera, Paracoccus, and Zoogloea), but these genera have similar ecosystem functions of EPS production, denitrification and polyhydroxyalkanoate (PHA) storage. Many less abundant but persistent taxa were also detected within these functional groups. The bacterial communities were functionally redundant irrespective of the loading rate applied. At steady-state reactor operation, the identity of the core community members was rather stable, but their relative abundances changed considerably over time. Furthermore, nitrifying bacteria were low in relative abundance and diversity in all reactors, despite their large contribution to nitrogen turnover. The results suggest that the OLR has considerable impact on the composition of the granular sludge communities, but also that the granule communities can be dynamic even at steady-state reactor operation due to high functional redundancy of several key guilds. Knowledge about microbial diversity with specific functional guilds under different operating conditions can be important for engineers to predict the stability of reactor functions during the start-up and continued reactor operation.
Collapse
Affiliation(s)
- Enikö Szabó
- Division of Water Environment Technology, Department of Civil and Environmental Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Raquel Liébana
- Division of Water Environment Technology, Department of Civil and Environmental Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Malte Hermansson
- Department of Chemistry and Molecular Biology, University of GothenburgGothenburg, Sweden
| | - Oskar Modin
- Division of Water Environment Technology, Department of Civil and Environmental Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Frank Persson
- Division of Water Environment Technology, Department of Civil and Environmental Engineering, Chalmers University of TechnologyGothenburg, Sweden
| | - Britt-Marie Wilén
- Division of Water Environment Technology, Department of Civil and Environmental Engineering, Chalmers University of TechnologyGothenburg, Sweden
| |
Collapse
|
45
|
Amorim CL, Moreira IS, Duque AF, van Loosdrecht MCM, Castro PML. Aerobic Granular Sludge. TECHNOLOGIES FOR THE TREATMENT AND RECOVERY OF NUTRIENTS FROM INDUSTRIAL WASTEWATER 2017. [DOI: 10.4018/978-1-5225-1037-6.ch009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Aerobic Granular Sludge (AGS) has been successfully applied for carbon, nitrogen and phosphorous removal from wastewaters, in a single tank, reducing the space and energy requirements. This is especially beneficial for, often space restricted, industrial facilities. Moreover, AGS holds a promise for the toxic pollutants removal, due to its layered and compact structure and the bacteria embedding in a protective extracellular polymeric matrix. These outstanding features contribute to AGS tolerance to toxicity and stability. Strategies available to deal with toxic compounds, namely granulation with effluents containing toxics and bioaugmentation, are addressed here. Different applications for the toxics/micropollutants removal through biosorption and/or biodegradation are presented, illustrating the technology versatility. The anthropogenic substances effects on system performance and bacterial populations established within AGS are also addressed. Combination of contaminants removal to allow water discharge, and simultaneous valuable products recovery are presented as final remark.
Collapse
Affiliation(s)
- Catarina L. Amorim
- Universidade Católica Portuguesa, Portugal & University of Aveiro, Portugal
| | | | - Anouk F. Duque
- Universidade Católica Portuguesa, Portugal & Universidade Nova de Lisboa, Portugal
| | | | | |
Collapse
|
46
|
Tiwari B, Sellamuthu B, Ouarda Y, Drogui P, Tyagi RD, Buelna G. Review on fate and mechanism of removal of pharmaceutical pollutants from wastewater using biological approach. BIORESOURCE TECHNOLOGY 2017; 224:1-12. [PMID: 27889353 DOI: 10.1016/j.biortech.2016.11.042] [Citation(s) in RCA: 281] [Impact Index Per Article: 40.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 11/08/2016] [Accepted: 11/11/2016] [Indexed: 05/25/2023]
Abstract
Due to research advancement and discoveries in the field of medical science, maintains and provides better human health and safer life, which lead to high demand for production of pharmaceutical compounds with a concomitant increase in population. These pharmaceutical (biologically active) compounds were not fully metabolized by the body and excreted out in wastewater. This micro-pollutant remains unchanged during wastewater treatment plant operation and enters into the receiving environment via the discharge of treated water. Persistence of pharmaceutical compounds in both surface and ground waters becomes a major concern due to their potential eco-toxicity. Pharmaceuticals (emerging micro-pollutants) deteriorate the water quality and impart a toxic effect on living organisms. Therefore, from last two decades, plenty of studies were conducted on the occurrence, impact, and removal of pharmaceutical residues from the environment. This review provides an overview on the fate and removal of pharmaceutical compounds via biological treatment process.
Collapse
Affiliation(s)
| | | | - Yassine Ouarda
- INRS Eau, Terre et Environnement, Québec (Québec), Canada
| | - Patrick Drogui
- INRS Eau, Terre et Environnement, Québec (Québec), Canada
| | | | - Gerardo Buelna
- Centre de Recherche Industrielle du Québec (CRIQ), Québec (Québec), Canada
| |
Collapse
|
47
|
Zhang Q, Hu J, Lee DJ. Aerobic granular processes: Current research trends. BIORESOURCE TECHNOLOGY 2016; 210:74-80. [PMID: 26873285 DOI: 10.1016/j.biortech.2016.01.098] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/23/2016] [Accepted: 01/25/2016] [Indexed: 06/05/2023]
Abstract
Aerobic granules are large biological aggregates with compact interiors that can be used in efficient wastewater treatment. This mini-review presents new researches on the development of aerobic granular processes, extended treatments for complicated pollutants, granulation mechanisms and enhancements of granule stability in long-term operation or storage, and the reuse of waste biomass as renewable resources. A discussion on the challenges of, and prospects for, the commercialization of aerobic granular process is provided.
Collapse
Affiliation(s)
- Quanguo Zhang
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Henan Province, Zhengzhou, China
| | - Jianjun Hu
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Henan Province, Zhengzhou, China
| | - Duu-Jong Lee
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Henan Province, Zhengzhou, China; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| |
Collapse
|
48
|
Wang XC, Shen JM, Chen ZL, Zhao X, Xu H. Removal of pharmaceuticals from synthetic wastewater in an aerobic granular sludge membrane bioreactor and determination of the bioreactor microbial diversity. Appl Microbiol Biotechnol 2016; 100:8213-23. [DOI: 10.1007/s00253-016-7577-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/17/2016] [Accepted: 04/23/2016] [Indexed: 11/29/2022]
|
49
|
Zhang X, Bai B, Wang H, Suo Y. Facile fabrication of sea buckthorn biocarbon (SB)@α-Fe2O3 composite catalysts and their applications for adsorptive removal of doxycycline wastewater through a cohesive heterogeneous Fenton-like regeneration. RSC Adv 2016. [DOI: 10.1039/c6ra07382d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel SB@α-Fe2O3 composite catalysts were fabricated through a simple thermal conversion process from SB@β-FeOOH precursor, which maintained good adsorption capacity after five successive adsorption/heterogeneous Fenton-like regeneration cycles.
Collapse
Affiliation(s)
- Xia Zhang
- College of Environmental Science and Engineering
- Chang'an University
- Xi'an
- People's Republic of China
| | - Bo Bai
- Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining
- People's Republic of China
| | - Honglun Wang
- Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining
- People's Republic of China
| | - Yourui Suo
- Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining
- People's Republic of China
| |
Collapse
|
50
|
Grijalbo L, Garbisu C, Martín I, Etxebarria J, Gutierrez-Mañero FJ, Lucas Garcia JA. Functional diversity and dynamics of bacterial communities in a membrane bioreactor for the treatment of metal-working fluid wastewater. JOURNAL OF WATER AND HEALTH 2015; 13:1006-1019. [PMID: 26608762 DOI: 10.2166/wh.2015.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An extensive microbiological study has been carried out in a membrane bioreactor fed with activated sludge and metal-working fluids. Functional diversity and dynamics of bacterial communities were studied with different approaches. Functional diversity of culturable bacterial communities was studied with different Biolog™ plates. Structure and dynamics of bacterial communities were studied in culturable and in non-culturable fractions using a 16S rRNA analysis. Among the culturable bacteria, Alphaproteobacteria and Gammaproteobacteria were the predominant classes. However, changes in microbial community structure were detected over time. Culture-independent analysis showed that Betaproteobacteria was the most frequently detected class in the membrane bioreactor (MBR) community with Zoogloea and Acidovorax as dominant genera. Also, among non-culturable bacteria, a process of succession was observed. Longitudinal structural shifts observed were more marked for non-culturable than for culturable bacteria, pointing towards an important role in the MBR performance. Microbial community metabolic abilities assessed with Biolog™ Gram negative, Gram positive and anaerobic plates also showed differences over time for Shannon's diversity index, kinetics of average well colour development, and the intensely used substrates by bacterial community in each plate.
Collapse
Affiliation(s)
- Lucía Grijalbo
- Department of Pharmaceutical and Health Sciences, Facultad Farmacia, Universidad San Pablo CEU., Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain E-mail:
| | - Carlos Garbisu
- Department of Ecology and Natural Resources, Soil Microbial Ecology Group, NEIKER-Tecnalia, c/Berreaga 1, E-48160 Derio, Spain
| | - Iker Martín
- Department of Ecology and Natural Resources, Soil Microbial Ecology Group, NEIKER-Tecnalia, c/Berreaga 1, E-48160 Derio, Spain
| | - Javier Etxebarria
- GAIKER Tecnological Centre, IK4 Research Alliance, E-48170 Zamudio, Spain
| | - F Javier Gutierrez-Mañero
- Department of Pharmaceutical and Health Sciences, Facultad Farmacia, Universidad San Pablo CEU., Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain E-mail:
| | - Jose Antonio Lucas Garcia
- Department of Pharmaceutical and Health Sciences, Facultad Farmacia, Universidad San Pablo CEU., Urb. Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain
| |
Collapse
|