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Zhang YX, Li YX, Zhang W, Niu Y, Zeng RJ. Enrichment of biofertilizer-type hydrogen-oxidizing bacteria on urea containing Cu(II). ENVIRONMENTAL RESEARCH 2023; 236:116831. [PMID: 37543126 DOI: 10.1016/j.envres.2023.116831] [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: 05/31/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/07/2023]
Abstract
With the utilization of pesticides and fertilizers (e.g. urea), the presence of nitrogen and heavy metals (e.g. copper) can enter and pollute the environment. Biofertilizers can be used to replace chemical fertilizers to increase crop yields and reduce environmental stress. The utilization of hydrogen-oxidizing bacteria (HOB) to be biofertilizers has recently attracted more attention. However, the enrichment of HOB on urea and the effect of copper are undetermined. HOB were successfully enriched using urea in this investigation. The average urea conversion rate (AUCR) was 180.08 mgN/L/d with a hydraulic retention time of 10 h. Microbial community (R1) was dominated by Hydrogenophaga (83.92%), a biofertilizer-type HOB. After addition of 5.47 mg/L Cu2+, the AUCR was decreased by 16%-151.18 mgN/L/d, and the growth of HOB was inhibited by 48%. Meanwhile, inhibition was also reflected by the increase of polysaccharide content (20.27 ± 0.57 to 33.45 ± 2.53 mg/gVSS) and protein content (106.19 ± 19.39 to 125.14 ± 24.73 mg/gVSS) of extracellular polymeric substances in the HOB. The resulting microbial community (R2) was changed to Azospiralium-dominated flora (91.33%). Both enriched microbial communities (R1 and R2) exhibited the abilities of ACC degradation and phosphate solubilization. This study demonstrates that employing urea can directly enrich biofertilizer-type HOB and copper-tolerant HOB can be obtained in a 5.47 mg/L Cu2+ environment. The results provide potential methods to obtain biofertilizer from copper-containing urea wastewater via HOB.
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Affiliation(s)
- Yi-Xin Zhang
- Centre of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yong-Xin Li
- Centre of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Wei Zhang
- Centre of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; College of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Yun Niu
- Centre of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Raymond Jianxiong Zeng
- Centre of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
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Wu Y, Zhao Y, Liu Y, Niu J, Zhao T, Bai X, Hussain A, Li YY. Insights into heavy metals shock on anammox systems: Cell structure-based mechanisms and new challenges. WATER RESEARCH 2023; 239:120031. [PMID: 37172374 DOI: 10.1016/j.watres.2023.120031] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/31/2023] [Accepted: 05/01/2023] [Indexed: 05/14/2023]
Abstract
Anaerobic ammonium oxidation (anammox) as a low-carbon and energy-saving technology, has shown unique advantages in the treatment of high ammonia wastewater. However, wastewater usually contains complex heavy metals (HMs), which pose a potential risk to the stable operation of the anammox system. This review systematically re-evaluates the HMs toxicity level from the inhibition effects and the inhibition recovery process, which can provide a new reference for engineering. From the perspective of anammox cell structure (extracellular, anammoxosome membrane, anammoxosome), the mechanism of HMs effects on cellular substances and metabolism is expounded. Furthermore, the challenges and research gaps for HMs inhibition in anammox research are also discussed. The clarification of material flow, energy flow and community succession under HMs shock will help further reveal the inhibition mechanism. The development of new recovery strategies such as bio-accelerators and bio-augmentation is conductive to breaking through the engineered limitations of HMs on anammox. This review provides a new perspective on the recognition of toxicity and mechanism of HMs in the anammox process, as well as the promotion of engineering applicability.
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Affiliation(s)
- Yichen Wu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yingxin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China.
| | - Yinuo Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Jiaojiao Niu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Tianyang Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Xinhao Bai
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Arif Hussain
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan; Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan.
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Chen Y, Chen H, Chen Z, Hu H, Deng C, Wang X. The benefits of autotrophic nitrogen removal from high concentration of urea wastewater through a process of urea hydrolysis and partial nitritation in sequencing batch reactor. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112762. [PMID: 34022646 DOI: 10.1016/j.jenvman.2021.112762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
For the sake of high efficiency and saving operational cost for high-concentration urea wastewater treatment, a novel two-stage partial nitritation (PN)-anammox process containing simultaneous urea hydrolysis and PN in sequencing batch reactor (SBR) was investigated. Although the influent urea concentration increased from 500 to 1200 mg/L, the SBR simultaneously achieved urea removal efficiency higher than 98% and stable PN with effluent NO2--N/NH4+-N ratio of 1.0-1.3 without any extra alkalinity addition. The intracellular hydrolysis was the dominant mechanism for urea removal and persistent free ammonia inhibition on nitrite-oxidizing bacteria was the main reason for nitrite accumulation of 97.92% in SBR. The subsequent anammox reactor showed efficient nitrogen removal performance with average ammonium removal efficiency, nitrogen removal efficiency and maximum nitrogen removal loading rate of 98.08%, 81.45% and 1.05 kg N·m-3·d-1 respectively. High-throughput sequencing results indicated Gemmatimonadetes became the most abundant bacterial phylum related to potential intracellular urea hydrolysis and displayed obvious ammonium-oxidizing bacteria enrichment and nitrite-oxidizing bacteria inhibition in SBR, and the dominant anammox bacteria (Candidatus_Kuenenia) in anammox reactor. The proposed process was proven to be promising for high-concentration urea wastewater treatment, facilitating the sustainable development of the urea industry in the future.
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Affiliation(s)
- Yongxing Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, China
| | - Haochuan Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, China
| | - Zhenguo Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, China; Hua An Biotech Co., Ltd., Foshan, 528300, China
| | - Haolin Hu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, China
| | - Cuilan Deng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, China
| | - Xiaojun Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, 510006, China; Hua An Biotech Co., Ltd., Foshan, 528300, China.
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Karasuta C, Wang X, Zheng X, Chen Y, Chen Z. Effect of hydraulic retention time on effluent pH in anammox bioreactors: Characteristics of effluent pH and pH as an indicator of reactor performance. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 280:111716. [PMID: 33272657 DOI: 10.1016/j.jenvman.2020.111716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 11/06/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
In order to assess the performance of anaerobic ammonium oxidation (anammox) bioreactors, it is necessary to study the stoichiometry of the anammox reaction and pH. This study focused on the effect of the hydraulic retention time (HRT) on the effluent pH in anammox-upflow anaerobic sludge blanket (UASB) bioreactors. Anammox-UASB bioreactors with and without a recirculation system were used to investigate the effluent pH and bioreactor performance. It was concluded that under varying HRT conditions, the decrease in effluent pH did not indicate the deterioration of nitrogen removal, but did indicate that the nitrogen removal efficiency was reduced owing to a sudden increase in the nitrogen loading rate resulting from the decrease in HRT. Moreover, the results showed that the HRT directly affected the concentration of OH-, which affected the increase/decrease in effluent pH. This study demonstrated that effluent pH is a more powerful tool than previous techniques used to assess bioreactor performance. We suggest that the effluent pH could be used for preliminary assessment.
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Affiliation(s)
- Chayangkun Karasuta
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, China
| | - Xiaojun Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, China; Hua An Biotech Co., Ltd., Foshan, 528300, China.
| | - Xuwen Zheng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, China
| | - Yongxing Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, China
| | - Zhenguo Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, China; Hua An Biotech Co., Ltd., Foshan, 528300, China
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Han YM, Liu FX, Xu XF, Yan Z, Liu ZJ. Nitrogen removal via a single-stage PN-Anammox process in a novel combined biofilm reactor. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:1483-1492. [PMID: 29595151 DOI: 10.2166/wst.2017.572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This study developed a partial nitrification (PN) and anaerobic ammonia oxidation (Anammox) process for treating high-ammonia wastewater using an innovative biofilm system in which ammonia oxidizing bacteria grew on fluidized Kaldnes (K1) carriers and Anammox bacteria grew on fixed acryl resin carriers. The airlift loop biofilm reactor (ALBR) was stably operated for more than 4 months under the following conditions: 35 ± 2 °C, pH 7.5-8.0 and dissolved oxygen (DO) of 0.5-3.5 mg/L. The results showed that the total nitrogen removal efficiency reached a maximum of 75% and the total nitrogen removal loading rate was above 0.4 kg/(d·m3). DO was the most efficient control parameter in the mixed biofilm system, and values below 1.5 mg/L were observed in the riser zone for the PN reaction, while values below 0.8 mg/L were observed in the downer zone for the Anammox reaction. Scanning electron microscopy and Fluorescence In Situ Hybridization images showed that most of the nitrifying bacteria were distributed on the K1 carriers and most of the Anammox bacteria were distributed within the acryl resin carriers. Therefore, the results indicate that the proposed combined biofilm system is easy to operate and efficient for the treatment of high-ammonia wastewater.
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Affiliation(s)
- Yue-Mei Han
- R&D Institute of Fluid and Powder Engineering, Dalian University of Technology, Dalian 116024 China E-mail: ; College of Mechanical Engineering, Dalian University, Dalian 116622 China
| | - Feng-Xia Liu
- R&D Institute of Fluid and Powder Engineering, Dalian University of Technology, Dalian 116024 China E-mail:
| | - Xiao-Fei Xu
- R&D Institute of Fluid and Powder Engineering, Dalian University of Technology, Dalian 116024 China E-mail:
| | - Zhuo Yan
- R&D Institute of Fluid and Powder Engineering, Dalian University of Technology, Dalian 116024 China E-mail:
| | - Zhi-Jun Liu
- R&D Institute of Fluid and Powder Engineering, Dalian University of Technology, Dalian 116024 China E-mail:
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Pereira AD, Cabezas A, Etchebehere C, Chernicharo CADL, de Araújo JC. Microbial communities in anammox reactors: a review. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/21622515.2017.1304457] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Alyne Duarte Pereira
- Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Angela Cabezas
- Microbial Ecology Laboratory, Microbial Biochemistry and Genomics Department, Biological Research Institute ‘Clemente Estable’, Montevideo, Uruguay
| | - Claudia Etchebehere
- Microbial Ecology Laboratory, Microbial Biochemistry and Genomics Department, Biological Research Institute ‘Clemente Estable’, Montevideo, Uruguay
| | | | - Juliana Calábria de Araújo
- Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
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Research of Iron Reduction and the Iron Reductase Localization of Anammox Bacteria. Curr Microbiol 2014; 69:880-7. [DOI: 10.1007/s00284-014-0668-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 06/15/2014] [Indexed: 10/24/2022]
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8
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Ecological characteristics of anaerobic ammonia oxidizing bacteria. Appl Microbiol Biotechnol 2013; 97:1841-9. [DOI: 10.1007/s00253-013-4697-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/29/2012] [Accepted: 01/04/2013] [Indexed: 10/27/2022]
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Liu S, Yang F, Meng F, Chen H, Gong Z. Enhanced anammox consortium activity for nitrogen removal: Impacts of static magnetic field. J Biotechnol 2008; 138:96-102. [DOI: 10.1016/j.jbiotec.2008.08.002] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2008] [Revised: 08/02/2008] [Accepted: 08/11/2008] [Indexed: 11/26/2022]
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Liu S, Yang F, Xue Y, Gong Z, Chen H, Wang T, Su Z. Evaluation of oxygen adaptation and identification of functional bacteria composition for anammox consortium in non-woven biological rotating contactor. BIORESOURCE TECHNOLOGY 2008; 99:8273-8279. [PMID: 18439820 DOI: 10.1016/j.biortech.2008.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2008] [Revised: 03/04/2008] [Accepted: 03/04/2008] [Indexed: 05/26/2023]
Abstract
In this study, the anammox consortium was found to adapt to the wastewater containing dissolved oxygen (DO), as the DO was gradually increased. Batch tests indicated the maximum aerobic ammonium oxidizing activity of the consortium was 1.38mmolNH4+-N(gVSS)(-1)day(-1), which played key roles in the oxygen consumption process; the maximum anaerobic ammonium oxidizing activity was slightly decreased after long-term oxygen exposure, but only from 21.23mmolNH4+-N(gVSS)(-1)day(-1) to 20.23mmolNH4+-N(gVSS)(-1)day(-1). Microbiological community analysis identified two strains similar to Nitrosomonas eutropha were responsible for oxygen consumption, which were able to exist in the autotrophic anaerobic condition for long periods and protect anammox bacteria Planctomycetales from the influence of oxygen. Microbiological composition analysis showed Nitrosomonas and Planctomycetales approximately accounted for 10% and 70% of the bacteria, respectively. The possibility of cultivation anammox consortium in presence of DO will lead to substantial savings of energy and resource in the industrial application.
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Affiliation(s)
- Sitong Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, PR China
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Assessment of the positive effect of salinity on the nitrogen removal performance and microbial composition during the start-up of CANON process. Appl Microbiol Biotechnol 2008; 80:339-48. [DOI: 10.1007/s00253-008-1536-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2008] [Revised: 05/07/2008] [Accepted: 05/08/2008] [Indexed: 11/26/2022]
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