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Zeng M, Yang X, Qin Y. Inhibition effect of Cu(II) on nitrogen removal in anammox-denitrification couple system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 941:173723. [PMID: 38839011 DOI: 10.1016/j.scitotenv.2024.173723] [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: 04/02/2024] [Revised: 05/31/2024] [Accepted: 05/31/2024] [Indexed: 06/07/2024]
Abstract
Due to the wide application in industries, copper can be detected in some nitrogen-rich wastewater. In this research, short-term and long-term experiments were conducted to explore the effects of Cu(II) on the anammox-denitrification couple system. It concluded that the half inhibition concentration (IC50) of Cu(II) was 35.54 mg/L. The system in reactor could tolerate low concentrations of Cu(II) (≤5 mg/L), while the total nitrogen removal efficiency decreased from 93 % to 33 % under 10 mg/L of Cu(II). After 45 days exposure to Cu(II) (1-10 mg/L), 14.54 mg/g SS copper accumulated in the sludge, which largely inhibited the microbial activity. More extracellular polymeric substances (EPS) were secreted to defend against copper toxicity. Proteobacteria (19.18 %-44.04 %) was the dominant phylum and showed excellent tolerance and adaptability to Cu(II). The dominant anammox bacteria, Candidatus_Brocadia, was slightly enhanced under low concentrations of Cu(II), but was highly inhibited under 10 mg/L of Cu(II). PICRUSt2 results showed that some metabolic activities were suppressed under the exposure of copper while defensive responses were also induced. Metabolic disorders eventually led to the death of some microbes, resulting in unrecoverable deterioration in microbial activity. Overall, this study explores the effect of Cu(II) on the anammox-denitrification process and provides a possible inhibition mechanism.
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Affiliation(s)
- Ming Zeng
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Xiangjing Yang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Yujie Qin
- 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, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China.
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2
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Liu C, Shen Y, Li Y, Huang F, Wang S, Li J. Aerobic granular sludge for complex heavy metal-containing wastewater treatment: characterization, performance, and mechanisms analysis. Front Microbiol 2024; 15:1356386. [PMID: 38357352 PMCID: PMC10864496 DOI: 10.3389/fmicb.2024.1356386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 01/16/2024] [Indexed: 02/16/2024] Open
Abstract
Complex heavy metal (HM)-containing wastewater discharges pose substantial risks to global water ecosystems and human health. Aerobic granular sludge (AGS) has attracted increased attention as an efficient and low-cost adsorbent in HM-containing wastewater treatment. Therefore, this study systematically evaluates the effect of Cu(II), Ni(II), and Cr(III) addition on the characteristics, performance and mechanism of AGS in complex HM-containing wastewater treatment process by means of fourier transform infrared spectroscopy, inductively coupled plasma spectrocopcy, confocal laser scanning microscopy, extracellular polymeric substances (EPS) fractions detection and scanning electron microscope-energy dispersive X-ray. The results showed that AGS efficiently eliminated Cu(II), Ni(II), and Cr(III) by the orchestrated mechanisms of ion exchange, three-layer EPS adsorption [soluble microbial products EPS (SMP-EPS), loosely bound EPS (LB-EPS), tightly bound EPS (TB-EPS)], and inner-sphere adsorption; notably, almost 100% of Ni(II) was removed. Three-layer EPS adsorption was the dominant mechanism through which the HM were removed, followed by ion exchange and inner-sphere adsorption. SMP-EPS and TB-EPS were identified as the key EPS fractions for adsorbing Cr(III) and Cu(II), respectively, while Ni(II) was adsorbed evenly on SMP-EPS, TB-EPS, and LB-EPS. Moreover, the rates at which the complex HM penetrated into the granule interior and their affinity for EPS followed the order Cu(II) > Ni(II) > Cr(III). Ultimately, addition of complex HM stimulated microorganisms to excrete massive phosphodiesterases (PDEs), leading to a pronounced decrease in cyclic diguanylate (c-di-GMP) levels, which subsequently suppressed EPS secretion due to the direct linkage between c-di-GMP and EPS. This study unveils the adaptability and removal mechanism of AGS in the treatment of complex HM-containing wastewater, which is expected to provide novel insights for addressing the challenges posed by intricate real wastewater scenarios.
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Affiliation(s)
- Chong Liu
- Key Laboratory of Embalming Methodology and Cosmetology of Cadavers of the Ministry of Civil Affairs, 101 Institute of the Ministry of Civil Affairs, Beijing, China
| | - Yao Shen
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi, China
| | - Yuguang Li
- Key Laboratory of Embalming Methodology and Cosmetology of Cadavers of the Ministry of Civil Affairs, 101 Institute of the Ministry of Civil Affairs, Beijing, China
| | - Fengguang Huang
- Key Laboratory of Embalming Methodology and Cosmetology of Cadavers of the Ministry of Civil Affairs, 101 Institute of the Ministry of Civil Affairs, Beijing, China
| | - Shuo Wang
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi, China
- Jiangsu College of Water Treatment Technology and Material Collaborative Innovation Center, Suzhou, China
| | - Ji Li
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi, China
- Jiangsu College of Water Treatment Technology and Material Collaborative Innovation Center, Suzhou, China
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Zeng Y, Zeng M, Cheng Y, Long B, Wu J. Cultivation of autotrophic nitrifying granular sludge for simultaneous removal of ammonia nitrogen and Tl(I). ENVIRONMENTAL TECHNOLOGY 2023; 44:4017-4032. [PMID: 35574708 DOI: 10.1080/09593330.2022.2077659] [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: 11/06/2021] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Autotrophic nitrifying granular sludge (ANGS) was cultivated for the simultaneous removal of ammonia nitrogen and Tl(I) from inorganic wastewater. The chemical oxygen demand (COD) in the influent gradually decreased to approximately zero in four parallel sequencing batch reactors (B1: blank controller, B2: 10 mL of added nitrifying bacteria concentrate in each cycle, B3: 1 mg/L Tl(I) added in each cycle and B4: 10 mL of added nitrifying bacteria concentrate and 1 mg/L Tl(I) in each cycle) within 15 days. The main properties, such as the granulation rate and specific oxygen uptake rate (SOUR) of the ANGS in B1, B2, B3 and B4 tended to be stable within 40, 33, 30 and 33 days, the removal efficiencies of Tl(I) were 59.5%-82.9% and 57.1%-88.6% in B3 and B4 after Day 30, the removal efficiencies of ammonia nitrogen in B1, B2, B3 and B4 were usually above 90% after Day 33, and the total inorganic nitrogen (TIN) in the effluent of B1, B2, B3 and B4 gradually stabilized after Day 36, 32, 32 and 36, indicating that mature ANGS was successfully cultivated in B1, B2, B3 and B4 within 40, 33, 33 and 36 days. The nitrogen degradation kinetic parameters of ANGS indicated that B3 had the strongest ability to remove ammonia and nitrite, suggesting that Tl(I) stress was beneficial to ammonia nitrogen removal and nitrite oxidation. The adsorption of Tl(I) can be described by the Freundlich equation, and the addition of external nitrifying bacteria improved the adsorption ability of ANGS.
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Affiliation(s)
- Yu Zeng
- School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Mingjing Zeng
- School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Yuanyuan Cheng
- School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Bei Long
- School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China
| | - Junfeng Wu
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Pingdingshan, People's Republic of China
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Wan C, Fu L, Li Z, Liu X, Lin L, Wu C. Formation, application, and storage-reactivation of aerobic granular sludge: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 323:116302. [PMID: 36150350 DOI: 10.1016/j.jenvman.2022.116302] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/31/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
It was an important discovery in wastewater treatment that the microorganisms in the traditional activated sludge can form aerobic granular sludge (AGS) by self-aggregation under appropriate water quality and operation conditions. With a typical three-dimensional spherical structure, AGS has high sludge-water separation efficiency, great treatment capacity, and strong tolerance to toxic and harmful substances, so it has been considered to be one of the most promising wastewater treatment technologies. This paper comprehensively reviewed AGS from multiple perspectives over the past two decades, including the culture conditions, granulation mechanisms, metabolic and structural stability, storage, and its diverse applications. Some important issues, such as the reproducibility of culture conditions and the structural and functional stability during application and storage, were also summarized, and the research prospects were put forward. The aggregation behavior of microorganisms in AGS was explained from the perspectives of physiology and ecology of complex populations. The storage of AGS is considered to have large commercial potential value with the increase of large-scale applications. The purpose of this paper is to provide a reference for the systematic and in-depth study on the sludge aerobic granulation process.
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Affiliation(s)
- Chunli Wan
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China
| | - Liya Fu
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Zhengwen Li
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China
| | - Xiang Liu
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China.
| | - Lin Lin
- Environmental Science and New Energy Technology Research Center, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen, 518055, China
| | - Changyong Wu
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
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Effects of heavy metals on denitrification processes in water treatment: A review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Su J, Zhang Q, Peng H, Feng J, He J, Zhang Y, Lin B, Wu N, Xiang Y. Exploring the impact of intensity and duration of Cu (II) depression on aniline-degrading biosystem: Performance, sludge activity and microbial diversity. BIORESOURCE TECHNOLOGY 2022; 360:127548. [PMID: 35779746 DOI: 10.1016/j.biortech.2022.127548] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/23/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
To evaluate the ecological risk of aniline wastewater biodegradation, the aniline wastewater (200 mg/L) was treated in this work under the stress of Cu (II) at 3, 6 and 10 mg/L, respectively. The slight fluctuation of aniline-degrading performance and the significant inhibition of nitrogen removal was caused by the Cu (II) stress at below 6 mg/L. Meanwhile, the tolerance of nitrifying performance to Cu (II) was higher than denitrifying. The collapse of biosystem was caused by the Cu (II) stress at 10 mg/L and the decontamination function was disabled within 8 days. The activity and stability of sludge declined under the increase of Cu (II) content. Microbial diversity results demonstrated that the genera with heavy-metal tolerance represented by Zoogloea and Azospira significantly dominated under the continuously Cu (II) stress. Whereas, the biosystem with these dominant genera did not achieve the comparable aniline and nitrogen removal performance as the control group.
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Affiliation(s)
- Junhao Su
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Qian Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China; Hainan Research Institute of Wuhan University of Technology, Sanya 572025, PR China.
| | - Haojin Peng
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Jiapeng Feng
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Jing He
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Yunjie Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Bing Lin
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Nanping Wu
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
| | - Yutong Xiang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, PR China
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7
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Zhou B, Chen G, Dong C, Jiang Y, Chen H, Ouyang T, Li YY, Zhang Y. The short-term and long-term effects of Fe(II) on the performance of anammox granules. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:1651-1659. [PMID: 33657245 DOI: 10.1002/wer.1549] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 02/02/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Fe(II) is one of the commonly used additives in wastewater treatment and proved to be beneficial for promoting microbial activity. In this study, the effects of Fe(II) on the specific anammox activity (SAA) and reactor performance were proved to be concentration-dependent. In the short-term experiment, low concentration of Fe(II) (5-80 mg/L) significantly enhanced the SAA, while high concentration of Fe(II) (120-300 mg/L) inhibited the SAA. It was confirmed that anammox can be domesticated after long-term exposure to low Fe(II) concentration, and the SAA could be further enhanced by higher Fe(II) concentration in the following phases. In addition, as an important factor for anammox granulation and maintaining the SAA, the extracellular polymeric substance (EPS) was also affected by Fe(II) addition. In spite of the effects on SAA and EPS, Fe(II) was proved to be the key factor that enhances the N2 O emission via abiotic pathway in the anammox reactor. PRACTITIONER POINTS: Low Fe(II) concentrations enhanced SAA, while high concentrations inhibited SAA. Long-term acclimatization by Fe(II) improved the tolerance of anammox to Fe(II). Fe(II) affects the amount and constituent of EPS and the performance of anammox granules. Accumulation of Fe(II) in the AAFEB reactor promoted the N2 O emission.
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Affiliation(s)
- Biru Zhou
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Guangjiao Chen
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Chifei Dong
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Yushi Jiang
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Haoyu Chen
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Tong Ouyang
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Yanlong Zhang
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Coastal Pollution Prevention and Control (CPPC), College of Environment and Ecology, Xiamen University, Xiamen, China
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8
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Cheng HH, Pien TT, Lee YC, Lu IC, Whang LM. Effects of copper on biological treatment of NMF- and MDG-containing wastewater from TFT-LCD industry. CHEMOSPHERE 2020; 258:127125. [PMID: 32540540 DOI: 10.1016/j.chemosphere.2020.127125] [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: 02/28/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 06/11/2023]
Abstract
This study aimed to evaluate the effects of copper on N-methylformamide (NMF)- and methyl diglycol (MDG)-containing wastewater treatment using batch experiments and a lab-scale anoxic-oxic (A/O) sequencing batch reactor (SBR). Batch experimental results indicated that aerobic degradation of NMF followed Monod-type kinetics. Copper inhibition on nitrification also followed Monod-type inhibition kinetics with copper-to-biomass ratio instead of copper concentration. Specific degradation rates of NMF and MDG under both aerobic and anoxic conditions decreased in the matrix of full-scale wastewater, and high copper dosage would further reduce the degradation rates. In the long-term presence of 0.5 mg/L copper, the A/O SBR could maintain stable and complete degradations of NMF and MDG, 95% of COD removal, and more than 50% of total nitrogen (TN) removal. High concentrations of copper spikes, including 40 mg/L and 110 mg/L, slowed down degradation rates for both NMF and MDG, but did not affect COD and TN removal efficiencies in the full 24 h-cycle operation. The long-term A/O SBR operation revealed that daily dosage of 0.5 mg/L copper was not detrimental to NMF/MDG degradations due to regularly wasting sludge, but 110 mg/L of copper spike obviously reduced NMF/MDG degradation rate although it could be recovered later by regularly wasting sludge and maintaining SRT at 20 days.
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Affiliation(s)
- Hai-Hsuan Cheng
- Department of Environmental Engineering, National Cheng Kung University (NCKU), No. 1, University Road, Tainan, 701, Taiwan
| | - Tzung-Tsin Pien
- Department of Environmental Engineering, National Cheng Kung University (NCKU), No. 1, University Road, Tainan, 701, Taiwan
| | - Ya-Ching Lee
- Department of Environmental Engineering, National Cheng Kung University (NCKU), No. 1, University Road, Tainan, 701, Taiwan
| | - I-Chun Lu
- Department of Environmental Engineering, National Cheng Kung University (NCKU), No. 1, University Road, Tainan, 701, Taiwan
| | - Liang-Ming Whang
- Department of Environmental Engineering, National Cheng Kung University (NCKU), No. 1, University Road, Tainan, 701, Taiwan; Sustainable Environment Research Laboratory (SERL), National Cheng Kung University (NCKU), No. 1, University Road, Tainan, 701, Taiwan.
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9
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Gutwiński P, Cema G, Surmacz-Górska J. The Effect of Pb2+ Short Term Stress on the Anammox Biomass—A Batch Test Experiment. J WATER CHEM TECHNO+ 2020. [DOI: 10.3103/s1063455x20030066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Miao S, Jin C, Liu R, Bai Y, Liu H, Hu C, Qu J. Microbial community structures and functions of hypersaline heterotrophic denitrifying process: Lab-scale and pilot-scale studies. BIORESOURCE TECHNOLOGY 2020; 310:123244. [PMID: 32339888 DOI: 10.1016/j.biortech.2020.123244] [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: 02/10/2020] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
High-nitrate wastewaters are known pose substantial risks to human and environmental health, while their effective treatment remains difficult. The denitrification of saline, high-NO3- wastewaters was investigated at the laboratory- and pilot-scale experiment. Complete denitrification was achieved for three different realistic wastewaters, and the maximum influent [NO3-]0 and salinity were as high as 20,500 mg/L and 7.8%, respectively. The results of microbial community structure analyses revealed that the sequences of denitrifying functional bacteria accounted for 96.2% of all sequences, and the functional genes for denitrification in bacteria were enriched with elevated salinity and [NO3-]0. A significant difference was observed in the dominant bacterial genus between synthetic and realistic wastewaters. Thauera and Halomonas species evolved to be the most common dominant genera contributing to the processes of nitrate, nitrite, and nitrous oxide reductase. This study is practically valuable for the treatment of realistic, saline, high-NO3- wastewaters via denitrification by heterotrophic bacteria.
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Affiliation(s)
- Shiyu Miao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Jin
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ruiping Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Yaohui Bai
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Chengzhi Hu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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11
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Cheng YF, Zhang Q, Li GF, Xue Y, Zheng XP, Cai S, Zhang ZZ, Jin RC. Long-term effects of copper nanoparticles on granule-based denitrification systems: Performance, microbial communities, functional genes and sludge properties. BIORESOURCE TECHNOLOGY 2019; 289:121707. [PMID: 31271915 DOI: 10.1016/j.biortech.2019.121707] [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: 05/14/2019] [Revised: 06/22/2019] [Accepted: 06/26/2019] [Indexed: 06/09/2023]
Abstract
The widespread use of copper nanoparticles (CuNPs) has attracted increasing concern because of their potential effects on biological wastewater treatment. However, their effect on granule-based denitrification systems is unclear. Hence, the effects of CuNPs on denitrifying granules were investigated during long-term operation. The results showed that 51.9% of nitrogen removal capacity was lost after exposure to 5 mg L-1 CuNPs, with the amount of Cu(II) gradually increasing with elevating CuNP levels. Moreover, the relative abundance of denitrifying bacteria (Castellaniella) and denitrifying functional genes (nirK, napA, narG and nosZ) obviously decreased. Meanwhile, the specific denitrification activity, the content of extracellular polymeric substances and dehydrogenase activity decreased by 44.0%, 15.2% and 99.9%, respectively, compared to their values in the initial sludge. Considering the downtrend in the abundance of copper resistance genes, it was deduced that the toxicity of CuNPs was mainly or at least partially due to the release of Cu(II).
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Affiliation(s)
- Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Qian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Gui-Feng Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yuan Xue
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Xia-Ping Zheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Shuang Cai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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12
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Chen L, Hu Q, Zhang X, Cai Z, Wang Y. Effects of ZnO nanoparticles on the performance of anaerobic membrane bioreactor: An attention to the characteristics of supernatant, effluent and biomass community. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 248:743-755. [PMID: 30851584 DOI: 10.1016/j.envpol.2019.02.051] [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: 09/28/2018] [Revised: 01/24/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
Two laboratory-scale anaerobic membrane bioreactor (AnMBRs) were built to investigate the effect of zinc oxide nanoparticles (ZnO-NPs) on their performance, and the recovery phase was also examined. Results showed that the addition of ZnO-NPs with 0.4 mg/L caused significant deteriorations of AnMBR performance, including decrements of chemical oxygen demand (COD) removal efficiency from 96.4% to 81.5% and biogas production from 0.36 to 0 L/g COD removal within 40 days. A significant increment from 13.2 to 52.1 mg/L in soluble microbial products (SMP) was obtained, while no obvious effect on colloids was observed except an increased fluctuation of colloid concentration. Additionally, gas chromatography-mass spectrometry (GC-MS) analysis revealed remarkable changes of compounds in effluent with exposure to ZnO-NPs, and some new alkanes and esters were produced, such as Cyclobutane, 1,2-diethyl-, trans-, Tetradecane, Cyclopropane, octyl-, and Butanoic acid, methyl ester. The microbial community was compared using high-throughput sequencing, clearly showing the changes in both bacteria and archaea communities. Furthermore, results for recovery phase indicated that the AnMBR performance can be recovered within around 60 days after stopping ZnO-NPs addition, accompanied by the decrement of zinc concentration mainly adsorbed by sludge.
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Affiliation(s)
- Lin Chen
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China.
| | - Qinzheng Hu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
| | - Xin Zhang
- School of Engineering, RMIT University, Melbourne, 3000, Australia
| | - Zongting Cai
- Engineering Sciences, University College London, London, WC1E 6BT, UK
| | - Yue Wang
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China; College of Environment, Hohai University, Nanjing, 210098, China
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Mak CY, Lin JG, Chen WH, Ng CA, Bashir MJK. The short- and long-term inhibitory effects of Fe (II) on anaerobic ammonium oxidizing (anammox) process. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 79:1860-1867. [PMID: 31294702 DOI: 10.2166/wst.2019.188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The application of the anammox process has great potential in treating nitrogen-rich wastewater. The presence of Fe (II) is expected to affect the growth and activity of anammox bacteria. Short-term (acute) and long-term effects (chronic) of Fe (II) on anammox activity were investigated. In the short-term study, results demonstrated that the optimum concentration of Fe (II) that could be added to anammox is 0.08 mM, at which specific anammox activity (SAA) improved by 60% compared to the control assay, 0.00 mM. The inhibition concentration, IC50, of Fe (II) was found to be 0.192 mM. Kinetics of anammox specific growth rate were estimated based on results of the batch test and evaluated with Han-Levenspiel's substrate inhibition kinetics model. The optimum concentration and IC50 of Fe (II) predicted by the Han-Levenspiel model was similar to the batch test, with values of 0.07 mM and 0.20 mM, respectively. The long-term effect of Fe (II) on the performance of a sequencing batch reactor (SBR) was evaluated. Results showed that an appropriate Fe (II) addition enhanced anammox activity, achieving 85% NH4 +-N and 96% NO2 --N removal efficiency when 0.08 mM of Fe (II) was added. Quantitative polymerase chain reaction (qPCR) was adopted to detect and identify the anammox bacteria.
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Affiliation(s)
- Cherh Yih Mak
- Faculty of Engineering and Green Technology, University Tunku Abdul Rahman, Kampar, Malaysia E-mail: ; Institute of Environmental Engineering, National Chiao Tung University, Hsinchu City, Taiwan
| | - Jih Gaw Lin
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu City, Taiwan
| | - Wen Hsing Chen
- Department of Environmental Engineering, National ILan University, Yilan City, Taiwan
| | - Choon Aun Ng
- Faculty of Engineering and Green Technology, University Tunku Abdul Rahman, Kampar, Malaysia E-mail:
| | - Mohammed J K Bashir
- Faculty of Engineering and Green Technology, University Tunku Abdul Rahman, Kampar, Malaysia E-mail:
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14
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Xu JJ, Cheng YF, Xu LZJ, Liu YY, Zhu BQ, Fan NS, Huang BC, Jin RC. The revolution of performance, sludge characteristics and microbial community of anammox biogranules under long-term NiO NPs exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 649:440-447. [PMID: 30176457 DOI: 10.1016/j.scitotenv.2018.08.386] [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: 07/30/2018] [Revised: 08/21/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
Given the increasing applications of NiO nanoparticles (NPs) in battery products, the potential effects of NiO NPs on anaerobic ammonium oxidation (anammox) systems were studied for the first time. The results showed that the anammox system performance obviously differed under the stresses of different NiO NPs concentrations. After the withdrawal of NiO NPs, the nitrogen removal performance of the anammox reactor returned to nearly that of the initial phase within 35 days. Compared with 0 mg L-1 NiO NPs, the specific anammox activity first increased and then decreased to the minimum value of 116.8 ± 13.8 mg TN g-1 VSS d-1 at 60 mg L-1 NiO NPs. The variations in the heme c contents and extracellular polymeric substance amounts were similar to the variations in the specific anammox activity throughout the whole experiment. Additionally, the relative abundance of the dominant bacteria (Candidatus kuenenia) increased from 20.44% at 60 mg L-1 NiO NPs to 23.14% at the end of the last phase. Thus, the potential effects of NiO NPs on anammox systems should be a cause for great concern.
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Affiliation(s)
- Jia-Jia Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Lian-Zeng-Ji Xu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ying-Yi Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Bing-Qian Zhu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Nian-Si Fan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Bao-Cheng Huang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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15
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Li H, Yao H, Zhang D, Zuo L, Ren J, Ma J, Pei J, Xu Y, Yang C. Short- and long-term effects of manganese, zinc and copper ions on nitrogen removal in nitritation-anammox process. CHEMOSPHERE 2018; 193:479-488. [PMID: 29156333 DOI: 10.1016/j.chemosphere.2017.11.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
This study provided a deep insight into the impacts of trace elements (Mn2+, Zn2+ and Cu2+) on nitritation-anammox process. For short-term exposure, all the three elements could improve the nitrogen removal rate (NRR) and the optimal concentrations were 2.0 mg/L, 2.0 mg/L and 0.5 mg/L for Mn2+, Zn2+ and Cu2+, respectively. Accordingly, the NRRs were enhanced 54.62%, 45.93% and 44.09%. The long-term experiments were carried out in lab-scale sequencing batch reactors. The surprising results showed that only Mn2+ addition could enhance the long-term nitritation-anammox process, and the NRR increased from 0.35 ± 0.01 kg N/m3/d (control, no extra trace element addition) to 0.49 ± 0.03 kg N/m3/d. Vice versa, the amendment of Zn2+ reduced the NRR to 0.28 ± 0.02 kg N/m3/d, and Cu2+ had no significant effect on the NRR (0.36 ± 0.01 kg N/m3/d). From the analysis of microbial community structure, it was explained by the increasing abundance of anaerobic ammonium oxidizing bacteria (AnAOB) only in Mn2+ treatment, whereas Zn2+ predominantly promoted ammonium oxidizing bacteria (AOB). Additionally, the majority of Mn2+ was identified inside AnAOB cells, and Zn2+ and Cu2+ were mainly located in AOB. Our results indicated the synergistic effects of trace elements on nitritation-anammox, both short-term encouraging activities of AnAOB and long-term altering microbial community structure. This work implies the importance of trace elements addition in nitritation-anammox process.
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Affiliation(s)
- Huayu Li
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Hong Yao
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China.
| | - Dayi Zhang
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 2YQ, UK
| | - Lushen Zuo
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Jia Ren
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Jinyuan Ma
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Jin Pei
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Yaru Xu
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Chengyong Yang
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
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16
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Chen L, Wang Y, Cao C, Liu C, Zhu L. Response of anaerobic membrane bioreactor to the presence of nano-Bi 2WO 6: reactor performance, supernatant characteristics, and microbial community. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:24261-24271. [PMID: 28889223 DOI: 10.1007/s11356-017-0022-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 08/23/2017] [Indexed: 06/07/2023]
Abstract
Considering the increasing incorporation of manufactured nano-material into consumer products, there is a concern about its potential impacts in biological wastewater treatment. In this study, the response of anaerobic sludge to the presence of Bi2WO6 nano-particles (NPs) was investigated in the anaerobic membrane bioreactor (AnMBR). As the concentration of Bi2WO6 in the reactor was controlled around 1 mg/L, there was no significant difference in effluent water quality or bacterial activities before and after NP exposure, partially due to the microbial-induced NP aggregation and stable complex formation. However, with the increasing dosage of Bi2WO6 from 5 to 40 mg/L, great influences on the AnMBR performance were observed, including the reduction of COD removal efficiency, inhibition of the mechanization step, increased production of soluble microbial products, and enhanced secretion of extracellular polymer substrates. Additional investigation with high-throughput sequencing was conducted, clearly demonstrating that Bi2WO6 NPs induced changes in the bacterial community.
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Affiliation(s)
- Lin Chen
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China.
- College of Environment, Hohai University, Nanjing, 210098, China.
| | - Yue Wang
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China
- College of Environment, Hohai University, Nanjing, 210098, China
| | - Chuqing Cao
- School of Mechanical Engineering, Nangjing University of Technology and Science, Nanjing, 210000, China
| | - Chang Liu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China
- College of Environment, Hohai University, Nanjing, 210098, China
| | - Liang Zhu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes, Hohai University, Nanjing, 210098, China
- College of Environment, Hohai University, Nanjing, 210098, China
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17
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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]
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18
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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.
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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
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19
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Feng Q, Yu Y, Guo C, Chen X, Cao J, Yang W. Investigation of the influence of Ni(ii) exposure on the simultaneous nitrification and denitrification of aerobic granules from an internal oxygen penetration perspective. RSC Adv 2017. [DOI: 10.1039/c6ra28196f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lab-scale Sequencing Batch Reactors (SBR) were adopted to study the effects of Ni(ii) exposure on the simultaneous nitrification and denitrification (SND) of the aerobic granular sludge under different concentrations of Ni(ii) (1.0, 5.0 and 10.0 mg L−1).
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Affiliation(s)
- Qian Feng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Hohai University
- Nanjing 210098
- China
| | - Yangyang Yu
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Chong Guo
- Sinopec Nanjing Engineering & Construction Incorporation
- Nanjing 211100
- China
| | - Xindi Chen
- College of Harbour
- Coastal and Offshore Engineering
- Hohai University
- Nanjing 210098
- China
| | - Jiashun Cao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes
- Ministry of Education
- Hohai University
- Nanjing 210098
- China
| | - Wen Yang
- Central and Southern China Municipal Engineering Design & Research Institute Co. Ltd
- Wuhan 430010
- China
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20
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Tan G, Xu N, Liu Y, Hao H, Sun W. Effects of lead concentration and accumulation on the performance and microbial community of aerobic granular sludge in sequencing batch reactors. ENVIRONMENTAL TECHNOLOGY 2016; 37:2905-2915. [PMID: 27012589 DOI: 10.1080/09593330.2016.1168870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 03/17/2016] [Indexed: 06/05/2023]
Abstract
The present study investigated the effects of lead on the morphological structure, physical and chemical properties, wastewater treatment performance and microbial community structure of aerobic granular sludge (AGS) in sequencing batch reactors (SBRs). The results showed that at Pb(2+) concentration of 1 mg/L, the mixed liquid suspended solids decreased, the settling velocity increased and the sludge volume index increased sharply. Meanwhile, AGS began to disintegrate and show an irregular shape. In terms of wastewater treatment in an SBR, the phosphorus removal rate was affected only until the Pb(2+) concentration was up to 1 mg/L. The [Formula: see text] removal efficiency began to decline when the Pb(2+) concentration increased to 6 mg/L, while the removal of chemical oxygen demand increased slightly within the Pb(2+) concentration range of 1-6 mg/L. Significant changes were observed in the microbial community structure, especially the dominant bacteria. Compared to the Pb(2+) accumulation on the sludge, the Pb(2+) concentration in the aqueous phase played a more important role in the performance and microbial community of AGS in SBRs.
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Affiliation(s)
- Guangcai Tan
- a Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy , Peking University Shenzhen Graduate School , Shenzhen , People's Republic of China
| | - Nan Xu
- a Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy , Peking University Shenzhen Graduate School , Shenzhen , People's Republic of China
| | - Yong Liu
- a Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy , Peking University Shenzhen Graduate School , Shenzhen , People's Republic of China
| | - Hongshan Hao
- a Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy , Peking University Shenzhen Graduate School , Shenzhen , People's Republic of China
| | - Weiling Sun
- b College of Environmental Sciences and Engineering, Peking University , The Key Laboratory of Water and Sediment Sciences, Ministry of Education , Beijing , People's Republic of China
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21
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Yu H, Si P, Shao W, Qiao X, Yang X, Gao D, Wang Z. Response of enzyme activities and microbial communities to soil amendment with sugar alcohols. Microbiologyopen 2016; 5:604-15. [PMID: 27005019 PMCID: PMC4985594 DOI: 10.1002/mbo3.355] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 02/17/2016] [Accepted: 02/23/2016] [Indexed: 01/15/2023] Open
Abstract
Changes in microbial community structure are widely known to occur after soil amendment with low-molecular-weight organic compounds; however, there is little information on concurrent changes in soil microbial functional diversity and enzyme activities, especially following sorbitol and mannitol amendment. Soil microbial functional diversity and enzyme activities can be impacted by sorbitol and mannitol, which in turn can alter soil fertility and quality. The objective of this study was to investigate the effects of sorbitol and mannitol addition on microbial functional diversity and enzyme activities. The results demonstrated that sorbitol and mannitol addition altered the soil microbial community structure and improved enzyme activities. Specifically, the addition of sorbitol enhanced the community-level physiological profile (CLPP) compared with the control, whereas the CLPP was significantly inhibited by the addition of mannitol. The results of a varimax rotated component matrix demonstrated that carbohydrates, polymers, and carboxylic acids affected the soil microbial functional structure. Additionally, we found that enzyme activities were affected by both the concentration and type of inputs. In the presence of high concentrations of sorbitol, the urease, catalase, alkaline phosphatase, β-glucosidase, and N-acetyl-β-d-glucosaminidase activities were significantly increased, while invertase activity was decreased. Similarly, this increase in invertase, catalase, and alkaline phosphatase and N-acetyl-β-d-glucosaminidase activities was especially evident after mannitol addition, and urease activity was only slightly affected. In contrast, β-glucosidase activity was suppressed at the highest concentration. These results indicate that microbial community diversity and enzyme activities are significantly affected by soil amendment with sorbitol and mannitol.
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Affiliation(s)
- Huili Yu
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
| | - Peng Si
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
| | - Wei Shao
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
| | - Xiansheng Qiao
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
| | - Xiaojing Yang
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
| | - Dengtao Gao
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
| | - Zhiqiang Wang
- Zhengzhou Fruit Research InstituteChinese Academy of Agricultural SciencesZhengzhouHenan450000China
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22
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Chen H, Chen QQ, Jiang XY, Hu HY, Shi ML, Jin RC. Insight into the short- and long-term effects of Cu(II) on denitrifying biogranules. JOURNAL OF HAZARDOUS MATERIALS 2016; 304:448-456. [PMID: 26610098 DOI: 10.1016/j.jhazmat.2015.11.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/16/2015] [Accepted: 11/08/2015] [Indexed: 06/05/2023]
Abstract
This study aimed to investigate the short- and long-term effects of Cu(2+) on the activity and performance of denitrifying bacteria. The short-term effects of various concentrations of Cu(2+) on the denitrifying bacteria were evaluated using batch assays. The specific denitrifying activity (SDA) decreased from 14.3 ± 2.2 (without Cu(2+)) to 6.1 ± 0.1 mg N h(-1)g(-1) VSS (100 mg Cu(2+)L(-1)) when Cu(2+) increased from 0 to 100 mg L(-1) with an increment of 10 mg Cu(2+)L(-1). A non-competitive inhibition model was used to calculate the 50% inhibition concentration (IC50) of Cu(2+) on denitrifying sludge (30.6 ± 2.5 mg L(-1)). Monod and Luong models were applied to investigate the influence of the initial substrate concentration, and the results suggested that the maximum substrate removal rate would be reduced with Cu(2+) supplementation. Pre-exposure to Cu(2+) could lead to an 18.2-46.2% decrease in the SDA and decreasing percentage of the SDA increased with both exposure time and concentration. In the continuous-flow test, Cu(2+) concentration varied from 1 to 75 mg L(-1); however, no clear deterioration was observed in the reactor, and the reactor was kept stable, with the total nitrogen removal efficiency and total organic carbon efficiency greater than 89.0 and 85.0%, respectively. The results demonstrated the short-term inhibition of Cu(2+) upon denitrification, and no notable adversity was observed during the continuous-flow test after long-term acclimation.
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Affiliation(s)
- Hui Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Qian-Qian Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiao-Yan Jiang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Hai-Yan Hu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Man-Ling Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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23
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Zhang ZZ, Cheng YF, Zhou YH, Buayi X, Jin RC. Roles of EDTA washing and Ca²⁺ regulation on the restoration of anammox granules inhibited by copper(II). JOURNAL OF HAZARDOUS MATERIALS 2016; 301:92-99. [PMID: 26342580 DOI: 10.1016/j.jhazmat.2015.08.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 08/11/2015] [Accepted: 08/22/2015] [Indexed: 06/05/2023]
Abstract
We investigated the feasibility of using ethylene diamine tetraacetic acid (EDTA) washing followed by Ca(2+) enhancement for the recovery of anammox reactors inhibited by Cu(II). Kinetic experiments and batch activity assays were employed to determine the optimal concentration of EDTA and washing time; and the performance and physiological dynamics were tracked by continuous-flow monitoring to evaluate the long-term effects. The two-step desorption process revealed that the Cu in anammox granules was primarily introduced via adsorption (approximately, 80.5%), and the portion of Cu in the dispersible layer was predominant (accounting for 71.1%). Afterwards, the Cu internalized in the cells (approximately, 14.7%) could diffuse out of the cells and be gradually washed out of the reactor over the next 20 days. The Ca(2+) addition that followed led to an accelerated nitrogen removal rate recovery slope (0.1491 kgN m(-3) d(-2)) and a normal biomass growth rate (0.054 d(-1)). The nitrogen removal rate returned to normal levels within 90 days and gradual improvements in granular characteristics were also achieved. Therefore, this study provides a new insight that externally removing the adsorbed heavy metals followed by internally repairing the metabolic system may represent an optimal restoration strategy for anammox consortium damaged by heavy metals.
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Affiliation(s)
- Zheng-Zhe Zhang
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Huang Zhou
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiemuguli Buayi
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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24
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Zhang ZZ, Deng R, Cheng YF, Zhou YH, Buayi X, Zhang X, Wang HZ, Jin RC. Behavior and fate of copper ions in an anammox granular sludge reactor and strategies for remediation. JOURNAL OF HAZARDOUS MATERIALS 2015; 300:838-846. [PMID: 26340551 DOI: 10.1016/j.jhazmat.2015.08.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 07/08/2015] [Accepted: 08/13/2015] [Indexed: 06/05/2023]
Abstract
In this study, the behavior, distribution and form dynamics of overloaded Cu(II) in anaerobic ammonium oxidation (anammox) granular sludge reactors were investigated. The performance and physiological characteristics were tracked by continuous-flow monitoring to evaluate the long-term effects. High Cu loading (0.24 g L(-1)d(-1)) exceeded sludge bearing capacity, and precipitation dominated the removal pathway. The Cu distribution migrated from the extracellular polymeric substances-bound to the cell-associated Cu and the Cu forms shifted from the weakly bound to strongly bound fractions over time. Pearson correlation and fluorescence spectra analyses showed that the increase in protein concentrations in the EPS was a clear self-defense response to Cu(II) stress. Two remediation strategies, i.e., ethylenediamine tetraacetic acid (EDTA) washing and ultrasound-enhanced EDTA washing, weakened the equilibrium metal partition coefficient from 5.8 to 0.45 and 0.34 L mg(-1)SS, respectively, thereby accelerating the external diffusion of the Cu that had accumulated in the anammox granules.
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Affiliation(s)
- Zheng-Zhe Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Rui Deng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Ya-Fei Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Yu-Huang Zhou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Xiemuguli Buayi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China
| | - Xian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Hui-Zhong Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China
| | - Ren-Cun Jin
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China; Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, Hangzhou Normal University, Hangzhou 310036, China.
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25
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Guo Q, Yang CC, Xu JL, Hu HY, Huang M, Shi ML, Jin RC. Individual and combined effects of substrate, heavy metal and hydraulic shocks on an anammox system. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.09.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Dai Y, Jiang Y, Su H. Influence of an aniline supplement on the stability of aerobic granular sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 162:115-122. [PMID: 26233584 DOI: 10.1016/j.jenvman.2015.05.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 06/04/2023]
Abstract
In order to evaluate the stability of aerobic granules in a toxic environment, this study discussed the influence of an aniline supplement on the properties and microbial community of aerobic granules. In the early stages of sequencing batch reactor (SBR) operation, an aniline supplement slightly affected the properties of the aerobic granules (strength, growth rate, SVI and so on). This effect was thereafter removed because of a change in the microbial community and the structure of aerobic granules: with the present of aniline, microbes with biodegradation ability appeared and gathered in the aerobic granules and the aerobic granules densified and settled faster as their SVI decreased to 35 mL/g and settling velocity increased to 41.56 m/h. When a synthetic waste water containing acetate as carbon source was used as influent, aniline (10-500 mg/L) could be degraded in 6 h, at a rate as high as 37.5 mg aniline/(L·h), with a removal rate in excess of 90%, while the effluent COD fell below 100 mg/L from the initial about 2000 mg/L. The aerobic granules cultured by acetate were compact, stable and resistant to aniline.
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Affiliation(s)
- Yajie Dai
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Yixin Jiang
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing, 100029, PR China.
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27
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Wang S, Gao M, Wang Z, She Z, Jin C, Zhao Y, Li Z. The effects of divalent copper on performance, extracellular polymeric substances and microbial community of an anoxic–aerobic sequencing batch reactor. RSC Adv 2015. [DOI: 10.1039/c5ra00449g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effects of divalent copper (Cu(ii)) on the performance, extracellular polymeric substances (EPS) and microbial community of activated sludge were investigated in an anoxic–aerobic sequencing batch reactor (SBR).
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Affiliation(s)
- Sen Wang
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
| | - Mengchun Gao
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
| | - Zhichao Wang
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
| | - Zonglian She
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
| | - Chunji Jin
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
| | - Yangguo Zhao
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
| | - Zhiwei Li
- Key Lab of Marine Environment and Ecology
- Ministry of Education
- Ocean University of China
- Qingdao 266100
- China
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28
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Yan Y, Wang Y, Liu Y, Liu X, Yao C, Ma L. Effect of continuously dosing Cu(II) on pollutant removal and soluble microbial products in a sequencing batch reactor. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 72:1653-1661. [PMID: 26524458 DOI: 10.2166/wst.2015.385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The effects of synthetic wastewater that contained 20 mg/L Cu(II) on the removal of organic pollutants in a sequencing batch reactor were investigated. Results of continuous 20 mg/L Cu(II) exposure for 120 days demonstrated that the chemical oxygen demand (COD) removal efficiency decreased to 42% initially, followed by a subsequent gradual recovery, which peaked at 78% by day 97. Effluent volatile fatty acid (VFA) concentration contributed 67 to 89% of the influent COD in the experimental reactor, which indicated that the degradation of the organic substances ceased at the VFA production step. Meanwhile, the varieties of soluble microbial products (SMP) content and main components (protein, polysaccharide, and DNA) were discussed to reveal the response of activated sludge to the toxicity of 20 mg/L Cu(II). The determination of Cu(II) concentrations in extracellular polymeric substances (EPS) and SMP throughout the experiment indicated an inverse relationship between extracellular Cu(II) concentration and COD removal efficiency.
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Affiliation(s)
- YangWei Yan
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - YuWen Wang
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - Yan Liu
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - Xiang Liu
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - ChenChao Yao
- Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai 200433, China E-mail:
| | - LuMing Ma
- College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
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29
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Microrespirometric characterization of activated sludge inhibition by copper and zinc. Biodegradation 2014; 25:867-79. [DOI: 10.1007/s10532-014-9706-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 08/05/2014] [Indexed: 10/24/2022]
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30
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Cao X, Cao H, Sheng Y, Xie Y, Zhang K, Zhang Y, Crittenden JC. Mechanisms of Cu2+ migration, recovery and detoxification in Cu2+-, SO4(2-) -containing wastewater treatment process with anaerobic granular sludge. ENVIRONMENTAL TECHNOLOGY 2014; 35:1956-1961. [PMID: 24956789 DOI: 10.1080/09593330.2014.889215] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study, anaerobic granular sludge with sulphate-reducing bacteria (SRB) was applied to treat Cu2+-, SO4(2-) -containing wastewater in an expanded granular sludge bed reactor. The migration and enrichment of copper in anaerobic granular sludge were envaluated. By analysing the sludge with X-ray diffraction, copper was determined to be present as covellite (CuS) in the sludge. Observations at the microscopic level showed that CuS precipitates were absorbed onto granules and gradually migrated from the outer to the interior layer of the granule over time and finally accumulated in the core of the granular sludge. Because of the migration of the CuS precipitates and the protection of the extracellular polymeric substances matrix, SRB were able to tolerate copper concentrations up to 10 mg/L. A copper removal efficiency of about 96% was observed at a steady state for 3 months, and copper was enriched in the granular sludge.
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31
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Daverey A, Chen YC, Sung S, Lin JG. Effect of zinc on anammox activity and performance of simultaneous partial nitrification, anammox and denitrification (SNAD) process. BIORESOURCE TECHNOLOGY 2014; 165:105-110. [PMID: 24815312 DOI: 10.1016/j.biortech.2014.04.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 04/08/2014] [Accepted: 04/09/2014] [Indexed: 06/03/2023]
Abstract
In the present study, short-term effects of zinc on anammox activities and long-term effect of zinc on the performance of simultaneous partial nitrification, anammox and denitrification (SNAD) process were evaluated. The anammox activity decreased with increasing zinc concentration and exposure time in short-term tests. The IC50 value of zinc was found to be 6.9mg/L. However, the presence of zinc (<10mg/L) in wastewater stimulated the microbial activities and nitrogen removal performance of SNAD process in sequencing batch biofilm reactor (SBBR). At first, inhibition of SNAD process was observed when influent zinc concentration increased to 20mg/L. The system recovered immediately, suggesting the acclimatization of microbial communities of SNAD process. The results showed that SBBR was well acclimatized under high zinc concentration (50-100mg/L) achieving 98% NH4(+)-N, 96% TN and 87% COD removal efficiencies.
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Affiliation(s)
- Achlesh Daverey
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yi-Chian Chen
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Shihwu Sung
- College of Agriculture, Forestry, and Natural Resource Management, University of Hawaii at Hilo, 200 W. Kawili ST., Hilo, HI 96720, USA
| | - Jih-Gaw Lin
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
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32
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Moreira IS, Amorim CL, Carvalho MF, Ferreira AC, Afonso CM, Castro PML. Effect of the metals iron, copper and silver on fluorobenzene biodegradation by Labrys portucalensis. Biodegradation 2012; 24:245-55. [PMID: 22842857 DOI: 10.1007/s10532-012-9581-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Accepted: 07/21/2012] [Indexed: 11/25/2022]
Abstract
Organic and metallic pollutants are ubiquitous in the environment. Many metals are reported to be toxic to microorganisms and to inhibit biodegradation. The effect of the metals iron, copper and silver on the metabolism of Labrys portucalensis F11 and on fluorobenzene (FB) biodegradation was examined. The results indicate that the addition of 1 mM of Fe(2+) to the culture medium has a positive effect on bacterial growth and has no impact in the biodegradation of 1 and 2 mM of FB. The presence of 1 mM of Cu(2+) was found to strongly inhibit the growth of F11 cultures and to reduce the biodegradation of 1 and 2 mM of FB to ca. 50 %, with 80 % of stoichiometrically expected fluoride released. In the experiments with resting cells, the FB degraded (from 2 mM supplied) was reduced ca. 20 % whereas the fluoride released was reduced to 45 % of that stoichiometrically expected. Ag(+) was the most potent inhibitor of FB degradation. In experiments with growing cells, the addition of 1 mM of Ag(+) to the culture medium containing 1 and 2 mM of FB resulted in no fluoride release, whereas FB degradation was only one third of that observed in control cultures. In the experiments with resting cells, the addition of Ag(+) resulted in 25 % reduction in substrate degradation and fluoride release was only 20 % of that stoichiometrically expected. The accumulation of catechol and 4-fluorocatechol in cultures supplemented with Cu(2+) or Ag(+) suggest inhibition of the key enzyme of FB metabolism-catechol 1,2-dioxygenase.
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Affiliation(s)
- Irina S Moreira
- Centro de Biotecnologia e Química Fina (CBQF), Escola Superior de Biotecnologia, Centro Regional do Porto, Universidade Católica Portuguesa, Rua Dr. António Bernardino de Almeida, 4200-072, Porto, Portugal
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33
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Liu S, Horn H. Effects of Fe(II) and Fe(III) on the single-stage deammonification process treating high-strength reject water from sludge dewatering. BIORESOURCE TECHNOLOGY 2012; 114:12-19. [PMID: 22483570 DOI: 10.1016/j.biortech.2011.11.125] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 11/25/2011] [Accepted: 11/28/2011] [Indexed: 05/31/2023]
Abstract
Iron (Fe) is often encountered in wastewaters. This study investigated the effects of iron on the single-stage deammonification process treating reject water from sludge dewatering. When Fe(2+) and Fe(3+) concentrations in the influent were below 1.3mg/L and 0.4 mg/L, Fe(2+) incorporation was found to be linearly correlated with NH(4)(+)-N removal. However, the excess Fe(2+) and Fe(3+) drastically deteriorated the deammonification performance. Both of the reactor performance and Fluorescence In Situ Hybridization results suggested higher sensitivity of autotrophic bacteria to iron than heterotrophs, the sequence of which was assessed to anammox bacteria>aerobic ammonium oxidizers>hetetrophic denitrifiers. With the excess existence of iron, extracellular substances were largely released by bacterial cells, which were the likely sites for iron uptake by scanning electron microscope-energy dispersive X-ray analysis. The information provided here would be useful to facilitate the application of deammonification process in the treatment of wastewater including metal iron.
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Affiliation(s)
- Sitong Liu
- Institute of Water Quality Control, Technische Universität München, Am Coulombwall, D-85748 Garching, Germany.
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34
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Changes in functional diversity of soil microbial community with addition of antibiotics sulfamethoxazole and chlortetracycline. Appl Microbiol Biotechnol 2011; 95:1615-23. [DOI: 10.1007/s00253-011-3831-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 12/02/2011] [Accepted: 12/09/2011] [Indexed: 11/26/2022]
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35
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Chemicals and Allied Products Waste Treatment. WATER 2011. [DOI: 10.3390/w3020629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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36
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Lee DJ, Chen YY, Show KY, Whiteley CG, Tay JH. Advances in aerobic granule formation and granule stability in the course of storage and reactor operation. Biotechnol Adv 2010; 28:919-34. [DOI: 10.1016/j.biotechadv.2010.08.007] [Citation(s) in RCA: 220] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2010] [Revised: 08/05/2010] [Accepted: 08/13/2010] [Indexed: 11/29/2022]
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