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He C, Wu H, Wei G, Zhu S, Qiu G, Wei C. Simultaneous decarbonization and phosphorus removal by Tetrasphaera elongata with glucose as carbon source under aerobic conditions. BIORESOURCE TECHNOLOGY 2024; 393:130048. [PMID: 37980947 DOI: 10.1016/j.biortech.2023.130048] [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: 08/14/2023] [Revised: 11/04/2023] [Accepted: 11/15/2023] [Indexed: 11/21/2023]
Abstract
Previous researches have recognized the vital role of Tetrasphaera elongata in enhanced biological phosphorus removal systems, but the underlying mechanisms remain under-investigated. To address this issue, this study investigated the metabolic characteristics of Tetrasphaera elongata when utilizing glucose as the sole carbon source. Results showed under aerobic conditions, Tetrasphaera elongata exhibited a glucose uptake rate of 136.6 mg/(L·h) and a corresponding phosphorus removal rate of 8.6 mg P/(L·h). Upregulations of genes associated with the glycolytic pathway and oxidative phosphorylation were observed. Noteworthily, the genes encoding the two-component sensor histidine kinase and response regulator transcription factor exhibited a remarkable 28.3 and 27.4-fold increase compared with the group without glucose. Since these genes play a pivotal role in phosphate-specific transport systems, collectively, these findings shed light on a potential mechanism for simultaneous decarbonization and phosphorus removal by Tetrasphaera elongata under aerobic conditions, providing fresh insights into phosphorus removal from wastewaters.
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Affiliation(s)
- Chao He
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China
| | - Haizhen Wu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, PR China.
| | - Gengrui Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Shuang Zhu
- School of Biosciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Guanglei Qiu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
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Zhao W, Bi X, Peng Y, Bai M. Research advances of the phosphorus-accumulating organisms of Candidatus Accumulibacter, Dechloromonas and Tetrasphaera: Metabolic mechanisms, applications and influencing factors. CHEMOSPHERE 2022; 307:135675. [PMID: 35842039 DOI: 10.1016/j.chemosphere.2022.135675] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/19/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Phosphorus-accumulating organisms (PAOs), which harbor metabolic mechanisms for phosphorus removal, are widely applied in wastewater treatment. Recently, novel PAOs and phosphorus removal metabolic pathways have been identified and studied. Specifically, Dechloromonas and Tetrasphaera can remove phosphorus via the denitrifying phosphorus removal and fermentation phosphorus removal pathways, respectively. As the main PAOs in biological phosphorus removal systems, the conventional PAO Candidatus Accumulibacter and the novel PAOs Dechloromonas and Tetrasphaera are thoroughly discussed in this paper, with a specific focus on their phosphorus removal metabolic mechanisms, process applications, community abundance and influencing factors. Dechloromonas can achieve simultaneous nitrogen and phosphorus removal in an anoxic environment through the denitrifying phosphorus removal metabolic pathway, which can further reduce carbon source requirements and aeration energy consumption. The metabolic pathways of Tetrasphaera are diverse, with phosphorus removal occurring in conjunction with macromolecular organics degradation through anaerobic fermentation. A collaborative oxic phosphorus removal pathway between Tetrasphaera and Ca. Accumulibacter, or a collaborative anoxic denitrifying phosphorus removal pathway between Tetrasphaera and Dechloromonas are future development directions for biological phosphorus removal technologies, which can further reduce carbon source and energy consumption while achieving enhanced phosphorus removal.
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Affiliation(s)
- Weihua Zhao
- State and Local Joint Engineering Research Center of Municipal Wastewater Treatment and Resource Recycling, Qingdao University of Technology, Qingdao, 266033, PR China; National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing, 100124, China
| | - Xuejun Bi
- State and Local Joint Engineering Research Center of Municipal Wastewater Treatment and Resource Recycling, Qingdao University of Technology, Qingdao, 266033, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing, 100124, China.
| | - Meng Bai
- State and Local Joint Engineering Research Center of Municipal Wastewater Treatment and Resource Recycling, Qingdao University of Technology, Qingdao, 266033, PR China
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Rey-Martínez N, Merdan G, Guisasola A, Baeza JA. Nitrite and nitrate inhibition thresholds for a glutamate-fed bio-P sludge. CHEMOSPHERE 2021; 283:131173. [PMID: 34182653 DOI: 10.1016/j.chemosphere.2021.131173] [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: 11/25/2020] [Revised: 04/30/2021] [Accepted: 06/06/2021] [Indexed: 06/13/2023]
Abstract
Enhanced biological phosphorus removal (EBPR) is an efficient and sustainable technology to remove phosphorus from wastewater. A widely known cause of EBPR deterioration in wastewater treatment plants (WWTPs) is the presence of nitrate/nitrite or oxygen in the anaerobic reactor. Moreover, most existing studies on the effect of either permanent aerobic conditions or inhibition of EBPR by nitrate or free nitrous acid (FNA) have been conducted with a "Candidatus Accumulibacter" or Tetrasphaera-enriched sludge, which are the two major reported groups of polyphosphate accumulating organisms (PAO) with key roles in full-scale EBPR WWTPs. This work reports the denitrification capabilities of a bio-P microbial community developed using glutamate as the sole source of carbon and nitrogen. This bio-P sludge exhibited a high denitrifying PAO (DPAO) activity, in fact, 56% of the phosphorus was uptaken under anoxic conditions. Furthermore, this mixed culture was able to use nitrite and nitrate as electron acceptor for P-uptake, being 1.8 μg HNO2-N·L-1 the maximum FNA concentration at which P-uptake can occur. Net P-removal was observed under permanent aerobic conditions. However, this microbial culture was more sensitive to FNA and permanent aerobic conditions compared to "Ca. Accumulibacter"-enriched sludge.
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Affiliation(s)
- Natalia Rey-Martínez
- GENOCOV. Departament d'Enginyeria Química, Biològica i Ambiental, Universitat Autònoma de Barcelona, Spain.
| | - Gökçe Merdan
- GENOCOV. Departament d'Enginyeria Química, Biològica i Ambiental, Universitat Autònoma de Barcelona, Spain; Department of Environmental Engineering, Namık Kemal University, Turkey.
| | - Albert Guisasola
- GENOCOV. Departament d'Enginyeria Química, Biològica i Ambiental, Universitat Autònoma de Barcelona, Spain.
| | - Juan Antonio Baeza
- GENOCOV. Departament d'Enginyeria Química, Biològica i Ambiental, Universitat Autònoma de Barcelona, Spain.
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Profiling population-level diversity and dynamics of Accumulibacter via high throughput sequencing of ppk1. Appl Microbiol Biotechnol 2019; 103:9711-9722. [DOI: 10.1007/s00253-019-10183-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/09/2019] [Accepted: 10/07/2019] [Indexed: 12/13/2022]
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Jin N. The effect of phosphate buffer on improving the performance of autothermal thermophilic aerobic digestion for sewage sludge. RSC Adv 2018; 8:9175-9180. [PMID: 35541838 PMCID: PMC9078640 DOI: 10.1039/c8ra00793d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 02/27/2018] [Indexed: 11/21/2022] Open
Abstract
The influence of phosphate buffer on the stabilization of sewage sludge was investigated in autothermal thermophilic aerobic digestion (ATAD). A concentration series of 0.005, 0.01, 0.02 and 0.03 mol phosphate buffer for each liter of sludge was adopted. The phosphate buffer significantly enhanced the performance of the ATAD for sewage sludge. The highest VS removal was achieved by the group with 0.01 mol L-1 phosphate buffer, and the stabilization time of the sludge was shortened by 9 days compared with that of the control. The group with the optimal dosage obtained the deepest stabilization level of sludge, which was reflected by the distribution of the particle size, and achieved 6.08% VS removal higher than that of the control in the end. Lower concentrations of carbon, nitrogen and phosphate in the supernatant were also achieved by proper dosing compared with those of the control.
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Affiliation(s)
- Ningben Jin
- Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd Shanghai 200232 China +86 21 54085205 +86 21 54085205
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Nittami T, Mukai M, Uematsu K, Yoon LW, Schroeder S, Chua ASM, Fukuda J, Fujita M, Seviour RJ. Effects of different carbon sources on enhanced biological phosphorus removal and “Candidatus Accumulibacter” community composition under continuous aerobic condition. Appl Microbiol Biotechnol 2017; 101:8607-8619. [DOI: 10.1007/s00253-017-8571-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 09/20/2017] [Accepted: 09/28/2017] [Indexed: 10/18/2022]
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Integrative microbial community analysis reveals full-scale enhanced biological phosphorus removal under tropical conditions. Sci Rep 2016; 6:25719. [PMID: 27193869 PMCID: PMC4872125 DOI: 10.1038/srep25719] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 04/19/2016] [Indexed: 02/01/2023] Open
Abstract
Management of phosphorus discharge from human waste is essential for the control of eutrophication in surface waters. Enhanced biological phosphorus removal (EBPR) is a sustainable, efficient way of removing phosphorus from waste water without employing chemical precipitation, but is assumed unachievable in tropical temperatures due to conditions that favour glycogen accumulating organisms (GAOs) over polyphosphate accumulating organisms (PAOs). Here, we show these assumptions are unfounded by studying comparative community dynamics in a full-scale plant following systematic perturbation of operational conditions, which modified community abundance, function and physicochemical state. A statistically significant increase in the relative abundance of the PAO Accumulibacter was associated with improved EBPR activity. GAO relative abundance also increased, challenging the assumption of competition. An Accumulibacter bin-genome was identified from a whole community metagenomic survey, and comparative analysis against extant Accumulibacter genomes suggests a close relationship to Type II. Analysis of the associated metatranscriptome data revealed that genes encoding proteins involved in the tricarboxylic acid cycle and glycolysis pathways were highly expressed, consistent with metabolic modelling results. Our findings show that tropical EBPR is indeed possible, highlight the translational potential of studying competition dynamics in full-scale waste water communities and carry implications for plant design in tropical regions.
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Chen ZB, He ZW, Tang CC, Hu DX, Cui YB, Wang AJ, Zhang Y, Yan LL, Ren NQ. Performance and model of a novel multi-sparger multi-stage airlift loop membrane bioreactor to treat high-strength 7-ACA pharmaceutical wastewater: effect of hydraulic retention time, temperature and pH. BIORESOURCE TECHNOLOGY 2014; 167:241-50. [PMID: 24994681 DOI: 10.1016/j.biortech.2014.05.108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 05/27/2014] [Accepted: 05/28/2014] [Indexed: 05/05/2023]
Abstract
In this study, three novel multi-sparger multi-stage airlift loop membrane bioreactors (Ms(2)ALMBRs) were set up in parallel for treating synthetic high-strength 7-ACA pharmaceutical wastewater under different HRTs, temperatures and pHs, respectively. During the 200-day operating time, average COD removal efficiencies were 94.96%, 96.05% and 93.9%. While average 7-ACA removal efficiencies were 66.44%, 59.04% and 59.60%, respectively. The optimal conditions were 10h, 15-35°C and 7-9 for HRT, temperature and pH, respectively. Moreover, the sludge characteristics and microorganism drug-resistances were explored. Results showed that different temperatures and pHs influenced contaminant removals by affecting MLSS concentration and β-lactamase activity significantly. In addition, mathematical statistical models, built on the polynomial and linear regression techniques, were developed for exploring the inner relationships between HRT, temperature and pH changes and MLSS concentrations, β-lactamase activities and contaminant removals of the Ms(2)ALMBR system.
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Affiliation(s)
- Zhao-bo Chen
- College of Environment and Resources, Dalian Nationalities University, 18 Liaohe West Road, Dalian 116600, China.
| | - Zhang-wei He
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Cong-cong Tang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Dong-xue Hu
- College of Environment and Resources, Dalian Nationalities University, 18 Liaohe West Road, Dalian 116600, China
| | - Yu-bo Cui
- College of Environment and Resources, Dalian Nationalities University, 18 Liaohe West Road, Dalian 116600, China
| | - Ai-jie Wang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Ying Zhang
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Li-long Yan
- College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Nan-qi Ren
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
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Kundu P, Debsarkar A, Mukherjee S. Biodegradation of Phosphorous in a Laboratory-scale Sequential Batch Reactor under Anoxic–Aerobic Conditions. Chem Ind 2014. [DOI: 10.1080/00194506.2014.881036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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