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Huang W, Xu P, Li X, Huang Y, Sun H, Li W, Zhang M, Shi M, Yuan Y. Performance evaluation of the effect of humic acid on Anammox granular sludge: Apparent morphology, nitrogen removal and microbial community. J Environ Sci (China) 2024; 144:148-158. [PMID: 38802226 DOI: 10.1016/j.jes.2023.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 05/29/2024]
Abstract
Humic acid (HA) is a typical refractory organic matter, so it is of great significance to investigate its effect on the performance of Anammox granular sludge. When the dosage of HA ≤ 50 mg/L, HA promotes the total nitrogen removal rate (NRR) to 1.45 kg/(m3·day). When HA was between 50 and 100 mg/L, the NRR of Anammox was stable. At this time, the adsorption of HA causes the sludge to gradually turn from red to brown, but the activities of heme and enzymes showed that its capacity was not affected. When HA levels reached 250 mg/L, the NRR dropped to 0.11 kg/(m3·day). Moderate HA levels promoted the release of extracellular polymeric substance (EPS), but excessive HA levels lead to a decrease in EPS concentrations. HA inhibited Anammox activity, which indirectly hindered the transmission of substrate and accumulated substrate toxicity. Although HA promoted the increase of heterotrophic microbial abundance in Anammox system, the microbial diversity decreased gradually. With the increase of HA concentration, the abundance of Candidatus_Brocadia, the main functional microorganism of Anammox system, decreased gradually, while the abundance of Candidatus_Kuenenia increased gradually.
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Affiliation(s)
- Wenhui Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Peiling Xu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xiang Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Suzhou Tianjun Environmental Technology Limited Company, Suzhou 215011, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Yong Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Hao Sun
- Suzhou Hongyu Environmental Technology Company Limited by Shares, Suzhou 215011, China
| | - Wei Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Mao Zhang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Miao Shi
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yan Yuan
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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2
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Chen N, Zhang XJ, Wei DH, Ma YP, Liu N, Ma BB, Zhang H, Yang HJ. Effect of sulfide on the nitrogen removal performance and microbial community of low-substrate Anammox process. ENVIRONMENTAL TECHNOLOGY 2024; 45:2427-2437. [PMID: 36705331 DOI: 10.1080/09593330.2023.2174048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Anammox is one of the most innovative nitrogen removal technologies, while its functional bacteria-anaerobic ammonia-oxidizing bacteria (AAOB) is sensitive to the impurities in the wastewater. In this study, the long-term effects of sulfide at different concentrations (0, 5, 10, 20, 30, 50, 25 mg L-1) on low substrate Anammox process were studied. The results showed that when the sulfide was 25-30 mg L-1, AAOB was well coupled with sulfide-denitrifying bacteria and the total nitrogen removal efficiency (TNRE) reached a maximum of 91.0%. The hydroxylamine oxidoreductase activity and Heme-c reached 1.678 EU g-1 SS and 0.0023 mmol g-1 SS, respectively, with the hzo and nosZ gene concentrations as 2.52 × 108 and 4.45 × 107 copies mL-1. 50 mg L-1 sulfide inhibited the nitrogen removal by AAOB, resulting in the TNRE decreasing to 81.7%. The experimental results provide a reference for the practical application of Anammox in treating sulfur-containing wastewater.
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Affiliation(s)
- Na Chen
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Xiao-Jing Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Deng-Hui Wei
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Yong-Peng Ma
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Nan Liu
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Bing-Bing Ma
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Han Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
| | - Hao-Jie Yang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, People's Republic of China
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3
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Hessler T, Harrison ST, Banfield JF, Huddy RJ. Harnessing Fermentation May Enhance the Performance of Biological Sulfate-Reducing Bioreactors. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:2830-2846. [PMID: 38301118 PMCID: PMC10867827 DOI: 10.1021/acs.est.3c04187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 12/28/2023] [Accepted: 01/08/2024] [Indexed: 02/03/2024]
Abstract
Biological sulfate reduction (BSR) represents a promising strategy for bioremediation of sulfate-rich waste streams, yet the impact of metabolic interactions on performance is largely unexplored. Here, genome-resolved metagenomics was used to characterize 17 microbial communities in reactors treating synthetic sulfate-contaminated solutions. Reactors were supplemented with lactate or acetate and a small amount of fermentable substrate. Of the 163 genomes representing all the abundant bacteria, 130 encode 321 NiFe and FeFe hydrogenases and all genomes of the 22 sulfate-reducing microorganisms (SRM) encode genes for H2 uptake. We observed lactate oxidation solely in the first packed bed reactor zone, with propionate and acetate oxidation in the middle and predominantly acetate oxidation in the effluent zone. The energetics of these reactions are very different, yet sulfate reduction kinetics were unaffected by the type of electron donor available. We hypothesize that the comparable rates, despite the typically slow growth of SRM on acetate, are a result of the consumption of H2 generated by fermentation. This is supported by the sustained performance of a predominantly acetate-supplemented stirred tank reactor dominated by diverse fermentative bacteria encoding FeFe hydrogenase genes and SRM capable of acetate and hydrogen consumption and CO2 assimilation. Thus, addition of fermentable substrates to stimulate syntrophic relationships may improve the performance of BSR reactors supplemented with inexpensive acetate.
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Affiliation(s)
- Tomas Hessler
- The
Center for Bioprocess Engineering Research, University of Cape Town, Cape Town 7700, South Africa
- Department
of Chemical Engineering, University of Cape
Town, Cape Town 7700, South Africa
- The
Innovative Genomics Institute at the University of California, Berkeley, California CA94720, United
States
- The
Department of Earth and Planetary Science, University of California, Berkeley, California CA94720, United States
- Environmental
Genomics and Systems Biology Division, Lawrence
Berkeley National Laboratory, Berkeley, California CA94720, United States
| | - Susan T.L. Harrison
- The
Center for Bioprocess Engineering Research, University of Cape Town, Cape Town 7700, South Africa
- Department
of Chemical Engineering, University of Cape
Town, Cape Town 7700, South Africa
- The Future
Water Institute, University of Cape Town, Cape Town 7700, South Africa
| | - Jillian F. Banfield
- The
Innovative Genomics Institute at the University of California, Berkeley, California CA94720, United
States
- The
Department of Earth and Planetary Science, University of California, Berkeley, California CA94720, United States
- The
Department of Environmental Science, Policy and Management, University of California, Berkeley, California CA94720, United States
| | - Robert J. Huddy
- The
Center for Bioprocess Engineering Research, University of Cape Town, Cape Town 7700, South Africa
- Department
of Chemical Engineering, University of Cape
Town, Cape Town 7700, South Africa
- The Future
Water Institute, University of Cape Town, Cape Town 7700, South Africa
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4
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Ma C, Zeng W, Miao H, Li S, Peng Y. Combination of sulfide-driven partial denitrification with anammox enhanced by zeolite powder for autotrophic nitrogen and sulfide removal from wastewater. ENVIRONMENTAL RESEARCH 2023; 237:116906. [PMID: 37595825 DOI: 10.1016/j.envres.2023.116906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/14/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Sulfide-driven partial denitrification and anaerobic ammonia oxidizing (anammox) (SPDA) is a high-efficiency technology to achieve simultaneous nitrogen and sulfide removal. Nitrite accumulation from sulfide-driven partial denitrification is the key to achieve SPDA. Zeolite powder was added to strengthen the competition of anammox bacteria against nitrite. The nitrogen removal rate (NRR) and partial denitrification efficiency in reactor was 5.18 kg-N m-3d-1 and 92.3% during 180 days of operation, higher than those without zeolite powder, indicating an improving contribution of zeolite powder. Metabolomics analysis revealed zeolite powder addition enhanced the metabolisms of amino acids, nicotinate and porphyrin through increasing glutamate content, and improved EPS secretion, heme c content and particle size. Besides, high ammonia enriched by zeolite powder was conducive to improve anammox activity and NRR. This study provides the metabolic insights into the mechanism of zeolite powder enhancing SPDA, which is meaningful towards overcoming the limitations in practical application of SDPA.
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Affiliation(s)
- Chenyang Ma
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Wei Zeng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, Beijing, 100124, China.
| | - Haohao Miao
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Shuangshuang Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, Beijing, 100124, China
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5
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Li X, Yuan Y, Dang P, Li BL, Huang Y, Li W, Zhang M, Shi M, Shen Z, Xie L. Effect of salinity stress on nitrogen and sulfur removal performance of short-cut sulfur autotrophic denitrification and anammox coupling system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:162982. [PMID: 36958564 DOI: 10.1016/j.scitotenv.2023.162982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 05/13/2023]
Abstract
The effects of salinity on anaerobic nitrogen and sulfide removal were investigated in a coupled anammox and short-cut sulfur autotrophic denitrification (SSADN) system. The results revealed that salinity had significant nonlinear effects on the nitrogen and sulfur transformations in the coupled system. When the salinity was <2 %, the anammox and SSADN activities increased with increasing salinity, and the total nitrogen removal rate, S0 production rate, and nitrite production rate were 0.41 kg/(m3·d), 0.37 kg/(m3·d), and 0.28 kg/(m3·d), respectively. With continuous increase of salinity, the performances of the anammox and SSADN gradually decreased, and the three indicators decreased to 0.14 kg/(m3·d), 0.22 kg/(m3·d), and 0.14 kg/(m3·d) at 5 % salinity, respectively. When the salinity reached 5 %, the nitrogen removal contribution of anammox decreased to 68.4 %, while the contribution of the sulfur autotrophic denitrification increased to 31.6 %. The coupled system recovered in a short time after alleviation of the salinity stress, and the SSADN activity recovery was faster than anammox. The microbial community structure and functional microbial abundance in the coupled system changed significantly with increasing salinity, and the functional microbial abundance after recovery was considerably different from the initial state.
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Affiliation(s)
- Xiang Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Yan Yuan
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Pengze Dang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Bo-Lin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Yong Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Wei Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Mao Zhang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Miao Shi
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Ziqi Shen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Linyan Xie
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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6
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Meng Q, Zeng W, Fan Z, Li S, Peng Y. Sulfide inhibition on polyphosphate accumulating organisms and glycogen accumulating organisms: Cumulative inhibitory effect and recoverability. JOURNAL OF HAZARDOUS MATERIALS 2023; 451:131157. [PMID: 36889076 DOI: 10.1016/j.jhazmat.2023.131157] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/14/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Sulfate in wastewater can be reduced to sulfide and its impact on the stability of enhanced biological phosphorus removal (EBPR) is still unclear. In this study, the metabolic changes and subsequent recovery of polyphosphate accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) were investigated at different sulfide concentrations. The results showed that the metabolic activity of PAOs and GAOs was mainly related to H2S concentration. Under anaerobic conditions, the catabolism of PAOs and GAOs was promoted at H2S concentrations below 79 mg/L S and 271 mg/L S, respectively, and inhibited above these concentrations; whereas anabolism was consistently inhibited in the presence of H2S. The phosphorus (P) release was also pH-dependent due to the intracellular free Mg2+ efflux from PAOs. H2S was more destructive to the esterase activity and membrane permeability of PAOs than those of GAOs and prompted intracellular free Mg2+ efflux of PAOs, resulting in worse aerobic metabolism and subsequent recovery of PAOs than GAOs. Additionally, sulfides facilitated the production of extracellular polymeric substances (EPS), especially tightly bound EPS. The amount of EPS in GAOs was significantly higher than that in PAOs. The above results indicated that sulfide had a stronger inhibition to PAOs than GAOs, and when sulfide was present, GAOs had a competitive advantage over PAOs in EBPR.
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Affiliation(s)
- Qingan Meng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Wei Zeng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.
| | - Zhiwei Fan
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Shuangshuang Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
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7
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Li H, Zhang J, Zhang C, Song Y, Han Y, Hou Y, Zhang D, Li C, Wang Y, Guo J. Responses of anammox and sulfur/pyrite autotrophic denitrification in one-stage system to high nitrogen load: Performance, metabolic and bacterial community. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117427. [PMID: 36738723 DOI: 10.1016/j.jenvman.2023.117427] [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: 11/17/2022] [Revised: 01/28/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
To remove residual nitrate from anammox process and achieve efficient nitrogen removal, a two-stage system (TAS) with the two individual reactors and a one-stage system (OAS) with the spatial functional areas in one reactor were established via anammox coupling sulfur autotrophic denitrification. The total nitrogen removal efficiency (TNRE) of OAS system (97.85 ± 1.92%) was higher than that of TAS system (93.63 ± 1.87%) under the influent NH4+-N and NO2--N of 227 and 300 mg/L. Meanwhile, the responses of microbial metabolism to high nitrogen load were investigated in term of microbial metabolites, electron transfer and metabolic activity. Microbial metabolites characteristics demonstrated that the OAS system secreted more EPS with lower protein (PN)/polysaccharide (PS) ratio than that in the TAS system, which was beneficial to protect bacteria from high nitrogen load. Electrochemical analysis suggested that the secretion of electron conductive substance (such as PN, PS) and redox active substances (such as flavin mononucleotide, the binding of flavins and cytochrome c on the outer membrane) were increased in the OAS system, which promoted the electron transfer efficiency. Moreover, the electron transport system activity (ETSA) values and ATP contents in OAS system were higher than that in the TAS system, which indicated that metabolic activity was improved in OAS system under the stimulation of high nitrogen load. Additionally, the bacterial community analysis indicated that the functional bacteria of Candidatus_Kuenenia and Armatimonadetes_gp5 had higher abundance in the OAS system than that in the TAS system, which was beneficial to realize the stable nitrogen removal performance. Overall, the responses mechanism of the OAS system was established to explain the resistant to high nitrogen load.
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Affiliation(s)
- Haibo Li
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Jiali Zhang
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Chao Zhang
- Tianjin Academy of Eco-Environmental Sciences, Nankai, Tianjin, 300191, China.
| | - Yuanyuan Song
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Yi Han
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Yanan Hou
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Daohong Zhang
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Chaocan Li
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Yufei Wang
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin, 300384, PR China
| | - Jianbo Guo
- School of Civil Engineering and Architecture, Taizhou University, Taizhou, 318000, Zhejiang, China.
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8
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Xin X, Li B, Liu X, Yang W, Liu Q. Starting-up performances and microbial community shifts in the coupling process (SAPD-A) with sulfide autotrophic partial denitrification (SAPD) and anammox treating nitrate and ammonium contained wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 331:117298. [PMID: 36669311 DOI: 10.1016/j.jenvman.2023.117298] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/11/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
A novel coupling process (SAPD-A) with sulfide autotrophic partial denitrification (SAPD) (NO3--N→NO2--N) and anaerobic ammonium oxidation (Anammox) was developed using anaerobic sequencing batch reactor (ASBR) in this work. The integrated process comprised two stages. Firstly, the starting-up of SAPD process succeeded by gradually increasing the influent nitrate and sulfide in 95 days. The average nitrate removal efficiency (NRE) and NO2--N accumulation rates were 71.24% ± 0.21% and 46.44% ± 0.53% at SAPD process (days 75-95). Then, successful coupling process (SAPD-A) was implemented in two stages (stage I and stage II of SAPD-A). In stage I, it is feasible to promote the successful construction of SAPD-A process by elevating influent ammonium only based on SAPD system, making the NRE increased from 44.45% ± 0.46% (day 95) to 64.62% ± 0.12% at the end of stage I in SAPD-A system (day 126). Meanwhile, the ammonium nitrogen removal efficiency (ARE) and total nitrogen removal efficiency (TN-RE) also rose up to 42.46% ± 2.02% and 63.28% ± 0.54% respectively. Furthermore, the average ARE, NRE and TN-RE during the stage II in the bioreactor could reach 65.17% ± 1.45%, 74.50% ± 0.81% and 77.81% ± 0.37% by loading some biofilters (with of approximate 10% of the volume of the bioreactor) attached anaerobic ammonium oxidation bacteria (AnAOB). High-throughput sequencing results showed that the dominant genera concerning nitrogen removal were norank_f_norank_o_Fimbriimonadates (with the abundance of 2.88-8.54%), norank_ o_ norank _ c_ OM190 (2.48-4.41%), norank_f_norank_o_norank_c_WWE3 (11.01-17.69%), subgroup_10 (1.97-3.81%), Limnobacter(2.17-3.49%), norank_f_n orank_ o_norank_ c_OLB14 (2.03-5.23%), norank-f-PHOS-HE36 (2.18-5.5%), Ellin6067 (1.34-2.24%) and Candidatus_ Brocadia (1.95-2.42%) during the whole starting-up period of coupling SAPD-A process. Batch experiments revealed that the sulfide was fully oxidized within 2 h, with the maximum reaction rate of 38.30 ± 1.53 mg (L h)-1 in the first 1 h. Simultaneously, the concentration of nitrate sharply decreased from 53.08 ± 0.23 mg L-1 to 24.16 ± 0.42 mg L-1 with the reaction rate of 66.41 ± 2.12 mg (L h)-1 in 0.5 h. Also, the ammonium concentration significantly declined from 47.88 ± 0.34 mg L-1 to 10.98 ± 0.39 mg L-1 in 8 h. Anammox process was responsible for the dominant nitrogen removal in the coupling SAPD-A system.
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Affiliation(s)
- Xin Xin
- School of Resources and Environment, Chengdu University of Information Technology,Chengdu, 610225, China.
| | - BaiXue Li
- School of Resources and Environment, Chengdu University of Information Technology,Chengdu, 610225, China
| | - Xin Liu
- School of Resources and Environment, Chengdu University of Information Technology,Chengdu, 610225, China
| | - Wenyu Yang
- School of Resources and Environment, Chengdu University of Information Technology,Chengdu, 610225, China
| | - Qin Liu
- School of Resources and Environment, Chengdu University of Information Technology,Chengdu, 610225, China
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9
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Devos P, Filali A, Grau P, Gillot S. Sidestream characteristics in water resource recovery facilities: A critical review. WATER RESEARCH 2023; 232:119620. [PMID: 36780748 DOI: 10.1016/j.watres.2023.119620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/12/2022] [Accepted: 01/15/2023] [Indexed: 06/18/2023]
Abstract
This review compiles information on sidestream characteristics that result from anaerobic digestion dewatering (conventional and preceded by a thermal hydrolysis process), biological and primary sludge thickening. The objective is to define a range of concentrations for the different characteristics found in literature and to confront them with the optimal operating conditions of sidestream processes for nutrient treatment or recovery. Each characteristic of sidestream (TSS, VSS, COD, N, P, Al3+, Ca2+, Cl-, Fe2+/3+, Mg2+, K+, Na+, SO42-, heavy metals, micro-pollutants and pathogens) is discussed according to the water resource recovery facility configuration, wastewater characteristics and implications for the recovery of nitrogen and phosphorus based on current published knowledge on the processes implemented at full-scale. The thorough analysis of sidestream characteristics shows that anaerobic digestion sidestreams have the highest ammonium content compared to biological and primary sludge sidestreams. Phosphate content in anaerobic digestion sidestreams depends on the type of applied phosphorus treatment but is also highly dependent on precipitation reactions within the digester. Thermal Hydrolysis Process (THP) mainly impacts COD, N and alkalinity content in anaerobic digestion sidestreams. Surprisingly, the concentration of phosphate is not higher compared to conventional anaerobic digestion, thus offering more attractive recovery possibilities upstream of the digester rather than in sidestreams. All sidestream processes investigated in the present study (struvite, partial nitrification/anammox, ammonia stripping, membranes, bioelectrochemical system, electrodialysis, ion exchange system and algae production) suffer from residual TSS in sidestreams. Above a certain threshold, residual COD and ions can also deteriorate the performance of the process or the purity of the final nutrient-based product. This article also provides a list of characteristics to measure to help in the choice of a specific process.
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Affiliation(s)
| | - Ahlem Filali
- Université Paris-Saclay, INRAE, UR PROSE, F-92761, Antony, France
| | - Paloma Grau
- Ceit and Tecnun, Manuel de Lardizabal 15, 20018, San Sebastian, Spain
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10
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Vuillemin A. Nitrogen cycling activities during decreased stratification in the coastal oxygen minimum zone off Namibia. Front Microbiol 2023; 14:1101902. [PMID: 36846760 PMCID: PMC9950273 DOI: 10.3389/fmicb.2023.1101902] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/20/2023] [Indexed: 02/12/2023] Open
Abstract
Productive oxygen minimum zones are regions dominated by heterotrophic denitrification fueled by sinking organic matter. Microbial redox-sensitive transformations therein result in the loss and overall geochemical deficit in inorganic fixed nitrogen in the water column, thereby impacting global climate in terms of nutrient equilibrium and greenhouse gases. Here, geochemical data are combined with metagenomes, metatranscriptomes, and stable-isotope probing incubations from the water column and subseafloor of the Benguela upwelling system. The taxonomic composition of 16S rRNA genes and relative expression of functional marker genes are used to explore metabolic activities by nitrifiers and denitrifiers under decreased stratification and increased lateral ventilation in Namibian coastal waters. Active planktonic nitrifiers were affiliated with Candidatus Nitrosopumilus and Candidatus Nitrosopelagicus among Archaea, and Nitrospina, Nitrosomonas, Nitrosococcus, and Nitrospira among Bacteria. Concurrent evidence from taxonomic and functional marker genes shows that populations of Nitrososphaeria and Nitrospinota were highly active under dysoxic conditions, coupling ammonia and nitrite oxidation with respiratory nitrite reduction, but minor metabolic activity toward mixotrophic use of simple nitrogen compounds. Although active reduction of nitric oxide to nitrous oxide by Nitrospirota, Gammaproteobacteria, and Desulfobacterota was tractable in bottom waters, the produced nitrous oxide was apparently scavenged at the ocean surface by Bacteroidota. Planctomycetota involved in anaerobic ammonia oxidation were identified in dysoxic waters and their underlying sediments, but were not found to be metabolically active due to limited availability of nitrite. Consistent with water column geochemical profiles, metatranscriptomic data demonstrate that nitrifier denitrification is fueled by fixed and organic nitrogen dissolved in dysoxic waters, and prevails over canonical denitrification and anaerobic oxidation of ammonia when the Namibian coastal waters and sediment-water interface on the shelf are ventilated by lateral currents during austral winter.
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Jia F, Liu C, Zhao X, Chen J, Zhang Z, Yao H. Real-time monitoring control of sequencing batch anammox process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:15414-15421. [PMID: 36169829 DOI: 10.1007/s11356-022-23233-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Rapid recognition and timely management of the emergent situation in wastewater treatment are crucial to maintaining the stable operation of anammox process. In this study, the feasibility of pH, conductivity (Cond) and oxidation reduction potential (ORP) profiles for monitoring and controlling anammox process for synthetic wastewater treatment was evaluated, and the practicability of the method was further verified by using real wastewater. The results showed that the characteristic values of these parameter profiles exhibited high accuracy and reproducibility in indicating the endpoint of the anammox reaction. Moreover, the positive correlations between TN removal and ΔpH, ΔCond and ΔORP were found. Nevertheless, only the slope of the Cond curve was found to be significantly linearly correlated with the specific anammox activity, which was further validated by the Haldane inhibition kinetic model, suggesting that the Cond curve can be used as an immediate feedback signal on whether anammox activity was inhibited. Overall, this study presents a fast, convenient and accurate strategy based on online real-time monitoring of instrument parameters, which was conducive to tracking the nitrogen removal process dynamics and performing the necessary operations in a timely manner, and to improving the stability of anammox process in wastewater treatment.
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Affiliation(s)
- Fangxu Jia
- Beijing International Scientific and Technological Cooperation Base of Water Pollution Control Techniques for Antibiotics and Resistance Genes, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Chenyu Liu
- Beijing International Scientific and Technological Cooperation Base of Water Pollution Control Techniques for Antibiotics and Resistance Genes, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Xingcheng Zhao
- Beijing International Scientific and Technological Cooperation Base of Water Pollution Control Techniques for Antibiotics and Resistance Genes, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Jiayi Chen
- Beijing International Scientific and Technological Cooperation Base of Water Pollution Control Techniques for Antibiotics and Resistance Genes, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Ziyan Zhang
- Beijing International Scientific and Technological Cooperation Base of Water Pollution Control Techniques for Antibiotics and Resistance Genes, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
| | - Hong Yao
- Beijing International Scientific and Technological Cooperation Base of Water Pollution Control Techniques for Antibiotics and Resistance Genes, Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, School of Environment, Beijing Jiaotong University, Beijing, 100044, People's Republic of China.
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12
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Zhang H, Zhang X, Wei D, Wen X, Zhou S, Li Y, Dong Y, Gong Y. Establishment of anammox coupled with sulfide-depending autotrophic denitrification process and its efficient pollutants removal performance. CHEMOSPHERE 2023; 313:137468. [PMID: 36481169 DOI: 10.1016/j.chemosphere.2022.137468] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 11/26/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Nitrogen and sulfur pollutants coexist in many industrial wastewaters, which may cause serious water pollution issues. In this study, Anammox coupled with sulfide-depending autotrophic denitrification process (coupling process) was established by adding sulfide to an Anammox system in a membrane bioreactor. Variations in nitrogen and sulfur removal performance, extracellular polymeric substances (EPS), key enzyme activities, and microbial components were analyzed. The sulfide in 25.0 mg L-1 successfully induced denitrification, and then helped establish the coupling process. This process achieved 96.1% TN removal and complete sulfide removal when the sulfide was increased to 100.0 mg L-1. The protein and polysaccharide in EPS gradually increased to 2.0 and 4.9 mg g-1 SS, respectively. The hydroxylamine oxidoreductase activity, Heme-c content, nitrite reductase activity, and nitrate reductase activity slightly decreased to 19.1 EU g-1 SS, 0.001 mmol g-1 SS, 0.002 μg min-1 mg-1 protein, and 0.005 μg min-1 mg-1 protein, respectively, indicating the slight suppression of sulfide in high concentration on the coupling process. However, after acclimatization, the Anammox and denitrifying bacteria interacted and cooperatively contributed to the simultaneous nitrogen and sulfur removal, with relative abundances of Thiobacillus-denitrifying bacteria and Candidatus Kuenenia-Anammox bacteria of 31.7% and 9.0%, respectively. The establishing strategy was proposed and then verified in another Anammox system, in which the coupling process was also established, with TN removal increasing from 73.4% to 82.5%.
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Affiliation(s)
- Hongli Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Xiaojing Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China.
| | - Denghui Wei
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Xiaoyu Wen
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Shijie Zhou
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Yuqi Li
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Yongen Dong
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Yaoyao Gong
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
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Dsane VF, An S, Choi Y. Distinctive differences in the granulation of saline and non-saline enriched anaerobic ammonia oxidizing (AMX) bacteria. J Environ Sci (China) 2022; 122:162-173. [PMID: 35717082 DOI: 10.1016/j.jes.2021.08.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/11/2021] [Accepted: 08/11/2021] [Indexed: 06/15/2023]
Abstract
The growing interest in the anaerobic ammonium oxidizing (AMX) process in treating high nitrogen containing wastewaters and a comprehensive study into the granulation mechanism of these bacteria under diverse environmental conditions over the years have been unequal. To this effect, the distinctive differences in saline adapted AMX (S_AMX) and non-saline adapted AMX (NS_AMX) granules are presented in this study. It was observed that substrate utilisation profiles, granule formation mechanism, and pace towards granulation differed marginally for the two adaptation conditions. The different microbial dominant aggregation types aided in splitting the 471 days operated lab-scale SBRs into three distinct phases. In both reactors, phase III (granules dominant phase) showed the highest average nitrogen removal efficiency of 87.9% ± 4.8% and 85.6% ± 3.6% for the S_AMX and NS_AMX processes, respectively. The extracellular polymeric substances (EPS) quantity and major composition determined its role either as a binding agent in granulation or a survival mechanism in saline adaptation. It was also observed that granules of the S_AMX reactor were mostly loosely and less condensed aggregates of smaller sub-units and flocs while those of the NS_AMX reactor were compact agglomerates. The ionic gradient in saline enrichment led to an increased activity of the Na+/K+ - ATPase, hence enriched granules produced higher cellular adenosine triphosphate molecules which finally improved the granules active biomass ratio by 32.96%. Microbial community showed that about three to four major known AMX species made up the granules consortia in both reactors. Proteins and expression of functional genes differed for these different species.
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Affiliation(s)
- Victory Fiifi Dsane
- Department of Environmental Engineering, Chungnam National University, Daejeon 305-764, Korea; Department of Food Process Engineering, University of Ghana, Legon, Ghana
| | - Sumin An
- Department of Environmental & IT Convergence Engineering, Chungnam National University, Daejeon 305-764, Korea
| | - Younggyun Choi
- Department of Environmental & IT Convergence Engineering, Chungnam National University, Daejeon 305-764, Korea.
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14
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Hao T, Xue W, Zeng Q, Liu R, Chen G. Microbial communities and biosynthetic pathways for the production of sulfated polysaccharides in the activated sludge system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:157950. [PMID: 35961395 DOI: 10.1016/j.scitotenv.2022.157950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Sulfated polysaccharides (SP) are widely used as industrial additives and pharmaceutical intermediates. As SP can only be extracted from sea algae, making them scarce raw materials. Recently, SP have been detected and extracted from the waste activated sludge of a saline secondary wastewater treatment plant, suggesting that there are alternative primary producers and synthesis pathways of the SP within the biological activated sludge. This study aimed to identify the primary SP producers, the SP biosynthesis pathways as well as the SP production rates in different types of activated sludges cultivated anoxically and/or anaerobically, with and without the presence of sufficient sulfate. The results showed that alternating anaerobic/anoxic conditions in sludge effectively produced the SP by the ordinary heterotrophic organisms (OHOs). The synthesis pathways for the three most common bioactive SP viz. fucoidan, carrageen, and heparin, were identified and elucidated at both the substrate and enzymatic levels. The Western Blot analyses revealed key enzymes for the SP synthesis (e.g., GDP-L-fucose-synthetase, GDP-fucose-pyrophosphorylase, β-1,4-galactosyltransferase), when sulfate was sufficient (>170 mg S/L) under an alternating anaerobic/anoxic conditions. In contrast, the absence of sulfate suppressed the SP production during the initial step of the SP generation. The synthesis of the SP in the sulfate-reducing (anaerobic) sludge was suppressed by the enzymatic inhibition, when sulfide exceeded 160 mg S/L, due to the competition for energy between the SP synthesis and sulfide detoxification. However, in the case of the sulfide-oxidizing sludge both the organic carbon and metabolism energy deficiencies inhibited the SP production. The findings of this study expand the understandings of the SP synthesis in the activated sludge under different operating conditions, including different sulfate levels.
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Affiliation(s)
- Tianwei Hao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau
| | - Weiqi Xue
- Research Institute of Tsinghua University in Shenzhen, Shenzhen, China.
| | - Qian Zeng
- Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Rulong Liu
- Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai, China.
| | - Guanghao Chen
- Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China; Wastewater Treatment Laboratory, FYT Graduate School, The Hong Kong University of Science and Technology, Nansha, Guangzhou, China
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15
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Hong S, De Clippeleir H, Goel R. Response of mixed community anammox biomass against sulfide, nitrite and recalcitrant carbon in terms of inhibition coefficients and functional gene expressions. CHEMOSPHERE 2022; 308:136232. [PMID: 36055592 DOI: 10.1016/j.chemosphere.2022.136232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Anaerobic ammonium oxidation (anammox) has evolved as a carbon and energy-efficient nitrogen management bioprocess. However, factors such as inhibitory chemicals still challenge the easy operation of this powerful bioprocess. This research systematically evaluated the inhibition kinetics of sulfide, nitrite, and recalcitrant carbon under a genomic framework. The inhibition at the substrate and genetic levels of sulfide, nitrite and recalcitrant carbon on anammox activity was studied using batch tests. Nitrite inhibition of anammox followed substrate inhibition and was best described by the Aiba model with an inhibition coefficient [Formula: see text] of 324.04 mg N/L. Hydrazine synthase (hzsB) gene (anammox biomarker) expression was increased over time when incubated with nitrite up to 400 mg N/L. However, despite having the highest specific nitrite removal (SNR), the expression of hzsB at 100 and 200 mg N/L of nitrite was more muted than in most other samples with lower SNRs. Sulfide severely inhibited anammox activities. The inhibition was fitted with a Monod-based model with a [Formula: see text] of 4.39 mg S/L. At a sulfide concentration of 5 mg/L, the hzsB expression decreased throughout the experiment from its original value at he beginning. Recalcitrant carbon of filtrate from thermal hydrolysis process pretreated anaerobic digester had a minimal effect on maximum specific anammox activity (MSAA), and thus the value of the inhibition coefficient could not be calculated. At the same time, its hzsB expression profile was similar to that in the control. Resiliency and recovery tests indicated that the inhibition of nitrite (up to 400 mg N/L) and recalcitrant carbon (in 100% filtrate) were reversible. About 32% of MSAA was recovered after repeated exposures to sulfide at 2.5 mg/L, while at 5 mg/L, the inhibition was irreversible. Findings from this study will be helpful for the successful design and implementation of anammox in full-scale applications.
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Affiliation(s)
- Soklida Hong
- Civil and Environmental Engineering Department, University of Utah, 110 S Central Campus Drive, Salt Lake City, UT, 84112, United States.
| | | | - Ramesh Goel
- Civil and Environmental Engineering Department, University of Utah, 110 S Central Campus Drive, Salt Lake City, UT, 84112, United States.
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16
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Zhang W, Wu Y, Wu J, Zheng X, Chen Y. Enhanced removal of sulfur-containing organic pollutants from actual wastewater by biofilm reactor: Insights of sulfur transformation and bacterial metabolic traits. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120187. [PMID: 36116571 DOI: 10.1016/j.envpol.2022.120187] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/06/2022] [Accepted: 09/11/2022] [Indexed: 06/15/2023]
Abstract
Sulfur-containing organic pollutants in wastewater could threaten human health due to their high malodor and toxicity, and their conversion processes are more complex than inorganic sulfur compounds. Membrane aerated biofilm reactor (MABR), as a novel and environmentally-friendly biofilm-based technology, is able to remove inorganic sulfur in synthetic wastewater. However, it is unknown how sulfur-containing organic pollutants in actual wastewater are transformed in MABR system. This work demonstrated the feasibility of MABR to eliminate sulfur-containing organic pollutants in actual wastewater, and the removal efficiency could be reached at approximately 100%. Meanwhile, over 70% of sulfur-containing organic contaminants were transformed to SO42- during the long-term operation. Further analysis indicated that the functional bacteria that participated in sulfur transformation and carbohydrates degradation (e.g., Chujaibacter, Microscillaceaesp., and Thiobacillus) were evidently enriched when treating actual wastewater. Moreover, the critical metabolic pathways (e.g., sulfur metabolism, glycolysis metabolism, and pyruvate metabolism), and the corresponding genetic expressions (e.g., nrrA, tauA, tauC, sorA, and SUOX) were evidently up-regulated during long-term operation, which was beneficial for the transformation of sulfur-containing organic pollutants in actual wastewater by MABR. This work would expand the application of MABR for treating the actual sulfur-containing organic wastewater and provide an in-depth understanding of the organic sulfur transformation in MABR.
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Affiliation(s)
- Wei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Yang Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Jing Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Xiong Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
| | - Yinguang Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
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17
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Chen B, Qaisar M, Xiao J, Li W, Li J, Cai J. Combined acute effect of salinity and substrate concentration on simultaneous sulfide and nitrite removal process. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Chen J, Hai Y, Zhang W, Zhou X. Insights into deterioration and reactivation of a mainstream anammox biofilm reactor response to C/N ratio. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 320:115780. [PMID: 35944318 DOI: 10.1016/j.jenvman.2022.115780] [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: 02/22/2022] [Revised: 07/09/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
In-depth knowledge of the deterioration and reactivation of the anaerobic ammonium oxidation (anammox) induced by carbon-to-nitrogen (C/N) is still lacking. Herein, the anammox performance was investigated in an anaerobic sequence biofilm batch reactor fed with low-strength partial nitration effluent in the range of C/N ratio from 0.5 to 3. The anammox was hardly deteriorated at C/N lower than 1.5, while became worsen if C/N was above 2.0. The specific anammox activity (SAA) experiments showed an 85% decrease of SAA at C/N of 3.0 compared with the maximum value (C/N:0). However, anammox capacity was rapidly recovered once influent C/N was adjusted back to zero. Moreover, C/N also highly affected the composition, structure and function of extracellular polymeric substance of the anammox biofilm. High-throughput sequencing revealed a close correlation between C/N change and microbial structure shift. Finally, the potential inhibition and restoration mechanism of the C/N-dependent anammox were proposed based on metagenomic analysis. This research provides some insights into the reinstatement of a mainstream anammox biofilm process after it is interrupted by high C/N influent.
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Affiliation(s)
- Jiabo Chen
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi Province, Taiyuan, 030024, China; Research Center for Low Carbon Technology of Water Environment, School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China
| | - Yan Hai
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi Province, Taiyuan, 030024, China
| | - Wei Zhang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi Province, Taiyuan, 030024, China
| | - Xin Zhou
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi Province, Taiyuan, 030024, China.
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Ji S, Gu N, Li YY, Liu J. Rapid proliferation of anaerobic ammonium oxidizing bacteria using anammox-hydroxyapatite technology in a pilot-scale expanded granular sludge bed reactor. BIORESOURCE TECHNOLOGY 2022; 362:127845. [PMID: 36031118 DOI: 10.1016/j.biortech.2022.127845] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
The practical application of anaerobic ammonium oxidation (anammox) technology was seriously limited by lack of anammox seeding sludge. In this work, a pilot-scale expanded granular sludge bed (EGSB) reactor was used for rapid proliferation of anaerobic ammonium oxidizing bacteria (AnAOB) using anammox-hydroxyapatite (anammox-HAP) technology. The excellent settleability of anammox-HAP granular sludge (with an excellent settling velocity of 395 m/h) supported the up-flow velocity of 9.6 m/h with recirculation ratio of 19. A high nitrogen loading rate (NLR) of 26.4 g N/L/d was achieved in the pilot-scale reactor, with a cell yield of 0.23 g VSS/g NH4+-N. The high recirculation ratio and up-flow velocity brought about the efficient mass transfer for anammox, eliminating free ammonia inhibition, resulting in the high NLR and cell yield. Results of microbial community revealed that the relative abundance of unclassified Brocadiaceae increased from 18.55% to 82.80%, illustrating the rapid proliferation of AnAOB.
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Affiliation(s)
- Shenghao Ji
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Nannan Gu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
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Monje V, Owsianiak M, Junicke H, Kjellberg K, Gernaey KV, Flores-Alsina X. Economic, technical, and environmental evaluation of retrofitting scenarios in a full-scale industrial wastewater treatment system. WATER RESEARCH 2022; 223:118997. [PMID: 36029698 DOI: 10.1016/j.watres.2022.118997] [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: 05/03/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
The use of mathematical models is a well-established procedure in the field of (waste) water engineering to "virtually" evaluate the feasibility of novel process modifications. In this way, only options with the highest chance of success are further developed to be implemented at full-scale, while less interesting proposals can be disregarded at an early stage. Nevertheless, there is still lack of studies, where different plant-wide model predictions (effluent quality, process economics, and technical aspects) are comprehensibly verified in the field with full-scale data. In this work, a set of analysis/evaluation tools are used to assess alternative retrofitting options in the largest industrial wastewater treatment plant in Northern Europe. A mechanistic mathematical model is simulated to reproduce process behavior (deviation < 11%). Multiple criteria are defined and verified with plant data (deviation < 5%). The feasibility of three types of scenarios is tested: (1) stream refluxing, (2) change of operational conditions and (3) the implementation of new technologies. Experimental measurements and computer simulations show that the current plant´s main revenues are obtained from the electricity produced by the biogas engine (54%) and sales of the inactivated bio-solids for off-site biogas production (33%). The main expenditures are the discharge fee (39%), and transportation and handling of bio-solids (30%). Selective treatment of bio-solid streams strongly modifies the fate of COD and N compounds within the plant. In addition, it increases revenues (+3%), reduces cost (-9%) and liberates capacity in both activated sludge (+25%) and inactivation reactors (+50%). Better management of the buffer tank promotes heterotrophic denitrification instead of dissimilatory nitrate conversion to ammonia. In this way, 11% of the incoming nitrogen is removed within the anaerobic water line and does not overload the activated sludge reactors. Only a marginal increase in process performance is achieved when the anaerobic granular sludge reactor operates at full capacity. The latter reveals that influent biodegradability is the main limiting factor rather than volume. Usage of either NaOH or heat (instead of CaO) as inactivation agents allows anaerobic treatment of the reject water, which substantially benefits revenues derived from higher electricity recovery (+44%). However, there is a high toll paid on chemicals (+73%) or heat recovery (-19%) depending on the inactivation technology. In addition, partial nitration/Anammox and a better poly-aluminum chloride (PAC) dosage strategy is necessary to achieve acceptable (< 2%) N and P levels in the effluent. The scenarios are evaluated from a sustainability angle by using life cycle impact assessment (LCIA) in form of damage stressors grouped into three categories: human health, ecosystems quality, and resource scarcity. The presented decision support tool has been used by the biotech company involved in the study to support decision-making on how to handle future expansions.
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Affiliation(s)
- Vicente Monje
- Department of Chemical and Biochemical Engineering, Process and Systems Engineering Centre (PROSYS), Technical University of Denmark, Building 228 A, Kgs. Lyngby 2800, Denmark
| | - Mikołaj Owsianiak
- Department of Environmental and Resource Engineering, Quantitative Sustainability Assessment, Technical University of Denmark, Produktionstorvet 424, Kgs. Lyngby 2800, Denmark
| | - Helena Junicke
- Department of Chemical and Biochemical Engineering, Process and Systems Engineering Centre (PROSYS), Technical University of Denmark, Building 228 A, Kgs. Lyngby 2800, Denmark
| | | | - Krist V Gernaey
- Department of Chemical and Biochemical Engineering, Process and Systems Engineering Centre (PROSYS), Technical University of Denmark, Building 228 A, Kgs. Lyngby 2800, Denmark
| | - Xavier Flores-Alsina
- Department of Chemical and Biochemical Engineering, Process and Systems Engineering Centre (PROSYS), Technical University of Denmark, Building 228 A, Kgs. Lyngby 2800, Denmark.
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21
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Ren ZQ, Yu LQ, Wang H, Li GF, Zhang LG, Du XN, Huang BC, Jin RC. Inorganic quantum dots - anammox consortia hybrid for stable nitrogen elimination under high-intensity solar-simulated irradiation. WATER RESEARCH 2022; 223:119033. [PMID: 36058096 DOI: 10.1016/j.watres.2022.119033] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/18/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
External stimulus such as light irradiation is able to deteriorate intracellular redox homeostasis and induce photooxidative damage to non-photogenic bacteria. Exploiting effective strategies to help bacteria resisting infaust stress is meaningful for achieving a stable operation of biological treatment system. In this work, selenium-doped carbon quantum dots (Se-CQDs) were blended into anaerobic ammonia oxidation (anammox) bacteria and an inorganic nanoparticle-microbe hybrid was successfully fabricated to evaluate its nitrogen removal performance under solar-simulated irradiation. It was found that the specific anammox activity decreased by 29.7 ± 5.2% and reactive oxygen species (ROS) content increased by 134.8 ± 4.1% under 50,000 lux light. Sludge activity could be completely recovered under the optimum dosage of 0.42 mL·(g volatile suspended solid) -1 Se-CQDs. Hydroxyl radical (·OH) and superoxide anion radical (·O2-) were identified as the leading ROS inducing lipid peroxidation and antioxidase function detriment. Also, the structure of ladderane lipids located on anammoxosome was destroyed by ROS and functional genes abundances declined accordingly. Although cell surface coated Se-CQDs could absorb ultraviolet light and partially mitigated the photoinhibition, the direct scavenging of ROS by intracellular Se-CQDs primarily contributed to the cellular redox homeostasis, antioxidase activity recovery and sludge activity improvement. The findings of this work provide in-depth understanding the metabolic response mechanism of anammox consortia to light irradiation and might be valuable for a more stable and sustainable nitrogen removal technology, i.e., algal-bacterial symbiotic system, development.
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Affiliation(s)
- Zhi-Qi Ren
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Lin-Qian Yu
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Hao Wang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Gui-Feng Li
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Li-Ge Zhang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Xue-Ning Du
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Bao-Cheng Huang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; School of Engineering, Hangzhou Normal University, Hangzhou 310018, China.
| | - Ren-Cun Jin
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; School of Engineering, Hangzhou Normal University, Hangzhou 310018, China.
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22
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Chen B, Qaisar M, Wang K, Li W, Cai J. Response of simultaneous sulfide and nitrate removal process on acute toxicity of substrate concentration and salinity: Single toxicity and combined toxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 836:155639. [PMID: 35513140 DOI: 10.1016/j.scitotenv.2022.155639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/18/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
Simultaneous sulfide and nitrate removal process has performed excellent to treat nitrogen and sulfur pollutants in wastewater treatment. A high salinity stress poses a great challenge to the treatment of highly saline wastewater containing nitrate and sulfide. In addition, sulfide and nitrates are also toxic for the process, and their high concentration would inhibit the process. Therefore, the current work explores the single acute toxic effect and combined toxic effect of salinity and substrate concentration on the performance of the process from the perspective of toxicology. Considering sulfide and nitrate removal performance as an indicator, the IC50 values of sulfide were 293.20 mg S/L and 572.30 mg S/L, respectively; while those of salinity were 6.14% wt (91.78 mS/cm) and 6.63% wt (98.73 mS/cm), respectively. High substrate concentration or salinity resulted in elemental sulfur generation. The molar ratio of generated elemental sulfur to consumed sulfide(R-Sulfate) was close to 1. The response of nitrate reduction product to the elevating substrate concentration was not obvious, while its response to increasing salinity was on the contrary. With the increasing salinity (1.2% wt to 9.6% wt), molar ratio of generated nitrogen gas to consumed nitrate (R-Nitrogen gas) increased from 0.58 to 1, while molar ratio of generated nitrite to consumed nitrate (R-Nitrite) decreased from 0.43 to 0. Factorial analysis test revealed that the combined acute toxicity of substrate and salinity on sulfide oxidization and nitrate reduction were both antagonistic effects.
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Affiliation(s)
- Bilong Chen
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Mahmood Qaisar
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Pakistan; College of Science, University of Bahrain, Bahrain
| | - Kaiquan Wang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Wen Li
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China
| | - Jing Cai
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China; International Science and Technology Cooperation Platform for Low-Carbon Recycling of Waste and Green Development, Zhejiang Gongshang University, Hangzhou, China.
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23
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Zhang Q, Lin JG, Kong Z, Zhang Y. A critical review of exogenous additives for improving the anammox process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155074. [PMID: 35398420 DOI: 10.1016/j.scitotenv.2022.155074] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/22/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Anammox achieves chemoautotrophic nitrogen removal under anaerobic and anoxic conditions and is a low-carbon wastewater biological nitrogen removal process with broad application potential. However, the physiological limitations of AnAOB often cause problems in engineering applications, such as a long start-up time, unstable operation, easily inhibited reactions, and difficulty in long-term strain preservation. Exogenous additives have been considered an alternative strategy to address these issues by retaining microbes, shortening the doubling time of AnAOB and improving functional enzyme activity. This paper reviews the role of carriers, biochar, intermediates, metal ions, reaction substrates, redox buffers, cryoprotectants and organics in optimizing anammox. The pathways and mechanisms of exogenous additives, which are explored to solve problems, are systematically summarized and analyzed in this article according to operational performance, functional enzyme activity, and microbial abundance to provide helpful information for the engineering application of anammox.
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Affiliation(s)
- Qi Zhang
- College of the Environment & Ecology, Xiamen University, South Xiang'an Road, Xiang'an District, Xiamen, Fujian 361102, China
| | - Jih-Gaw Lin
- College of the Environment & Ecology, Xiamen University, South Xiang'an Road, Xiang'an District, Xiamen, Fujian 361102, China; Institute of Environmental Engineering, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Zhe Kong
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yanlong Zhang
- College of the Environment & Ecology, Xiamen University, South Xiang'an Road, Xiang'an District, Xiamen, Fujian 361102, China.
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24
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Huo D, Dang Y, Sun D, Holmes DE. Efficient nitrogen removal from leachate by coupling Anammox and sulfur-siderite-driven denitrification. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154683. [PMID: 35314225 DOI: 10.1016/j.scitotenv.2022.154683] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/26/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
High concentrations of nitrate can be generated during anaerobic ammonium oxidation (Anammox) wastewater treatment processes. Addition of sulfur to Anammox reactors stimulates the growth of sulfur-driven denitrifying (SADN) bacteria that can reduce nitrate to nitrogen gas. However, protons released during the SADN process lower the pH of the system and inhibit Anammox activity. The system will keep stable when pH is in the range of 7.5-8.5. This study showed that addition of siderite stabilized the reactor system and significantly improved the nitrogen removal process. In fact, even when concentrations of total nitrogen were 477.15 ± 16.84 mg/L, the sulfur/siderite reactor maintained nitrogen removal efficiencies >90%, while efficiencies in the sulfur reactor were < 80%. Anammox accounted for 31% of the bacterial sequences in the sulfur/siderite reactor compared to only 14% in the sulfur reactor with the majority of sequences clustering with Ca. Brocadia. An abundance of c-type cytochromes in anammox aggregates in the sulfur-siderite reactor also indicated that anammox activity was higher in this system.
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Affiliation(s)
- Da Huo
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yan Dang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Dezhi Sun
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
| | - Dawn E Holmes
- Department of Physical and Biological Sciences, Western New England University, 1215 Wilbraham Rd, Springfield, MA 01119, USA
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25
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Wang L, Gu W, Liu Y, Liang P, Zhang X, Huang X. Challenges, solutions and prospects of mainstream anammox-based process for municipal wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 820:153351. [PMID: 35077796 DOI: 10.1016/j.scitotenv.2022.153351] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/02/2022] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Anaerobic ammonia oxidation (anammox) process has a promising application prospect for the mainstream deammonification of municipal wastewater due to its high efficiency and low energy consumption. In this paper, challenges and solutions of mainstream anammox-based process are summarized by analyzing the literature of recent ten years. Slow growth rate of anammox bacteria is a main challenge for mainstream anammox-based process, and enhancement of bacteria retention has been recognized to be necessary. Compared with directly increasing sludge retention time (SRT) with membrane bioreactors or sequencing batch reactors, culturing anammox bacteria in the form of biofilm or granule sludge is more promising for its feasibility of eliminating nitrite oxidizing bacteria (NOB). Besides, adding external electron donors or conductive materials and enriching the concentration of ammonia with absorption materials have also been proved helpful to improve the activity of anammox bacteria. Other challenges include the elimination of NOB and achieving ideal ratio of NH4+ and NO2-. To solve these problems and achieve stable partial nitrification, composite control strategies based on low SRT and limited aeration are needed based on the special characteristics of ammonia oxidizing bacteria (AOB) and NOB. When treating actual wastewater, interference of low temperature and components in the influent is another problem. Relatively high activity of anammox bacteria has been realized after artificial acclimation at low temperature and the mechanism was also preliminary explored. Different pre-treatment sections have been designed to reduce the concentration of COD and S2- from the influent. As for the nitrate produced by the anammox reaction, coupling processes are useful to reduce the concentration of nitrate in the effluent. In brief, suitable reactor and coupling process should be selected according to the temperature, influent quality and discharge targets of different regions. The future prospects of the mainstream anammox-based process are also put forward.
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Affiliation(s)
- Lisheng Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Wancong Gu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Yanchen Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China.
| | - Peng Liang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Xiaoyuan Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China; Research and Application Center for Membrane Technology, School of Environment, Tsinghua University, Beijing 100084, China.
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26
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Lin WH, Chen CC, Ou JH, Sheu YT, Hou D, Kao CM. Bioremediation of hexavalent-chromium contaminated groundwater: Microcosm, column, and microbial diversity studies. CHEMOSPHERE 2022; 295:133877. [PMID: 35131270 DOI: 10.1016/j.chemosphere.2022.133877] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 12/11/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Sulfate reducing bacteria (SRB) have the capability of bioreducing hexavalent chromium [Cr(VI)] to trivalent chromium [Cr(III)] under sulfate-reducing conditions for toxicity reduction. However, a high amount of sulfate addition would cause elevated sulfide production, which could inhibit the growth of SRB and result in reduced Cr(VI) bioreduction efficiency. A slow release reagent, viscous carbon and sulfate-releasing colloidal substrates (VCSRCS), was prepared for a long-lasting carbon and sulfate supplement. In the column study, VCSRCS was injected into the column system to form a VCSRCS biobarrier for Cr(VI) containment and bioreduction. A complete Cr(VI) removal was observed via the adsorption and bioreduction mechanisms in the column with VCSRCS addition. Results from X-ray diffractometer analyses indicate that Cr(OH)3(s) and Cr2O3(s) were detected in precipitates, indicating the occurrence of Cr(VI) reduction followed by Cr(III) precipitation. Results from the Fourier-transform infrared spectroscopy analyses show that cell deposits carried functional groups, which could adsorb Cr. Addition of VCSRCS caused increased populations of total bacteria and dsrA, which also enhanced Cr(VI) reduction. Microbial diversity results indicate that VCSRCS addition resulted in the growth of Cr(VI)-reducing bacteria including Exiguobacterium, Citrobacter, Aerococcus, and SRB. Results of this study will be helpful in developing an effective and green VCSRCS biobarrier for the bioremediation of Cr(VI)-polluted groundwater.
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Affiliation(s)
- Wei-Han Lin
- School of Environment, Tsinghua University, Beijing, China
| | - Chien-Cheng Chen
- Department of Biotechnology, National Kaohsiung Normal University, Kaohsiung, Taiwan
| | - Jiun-Hau Ou
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Yih-Terng Sheu
- General Education Center, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing, China.
| | - Chih-Ming Kao
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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27
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Luo D, Qian J, Jin X, Zhang L, You K, Yu PF, Fu JX. How phenol stresses anammox for the treatment of ammonia-rich wastewater: Phenomena, microbial community evolution and molecular modeling. BIORESOURCE TECHNOLOGY 2022; 347:126747. [PMID: 35065227 DOI: 10.1016/j.biortech.2022.126747] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 01/16/2022] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
Phenol is a biotoxic organic compound and found in large quantities in ammonia-rich wastewater discharged from coking and petrochemical industries. In this work, phenol was fed to the system of anaerobic ammonia oxidation (anammox), and the possible inhibitory mechanism was speculated using the characterization of granular sludge, analysis of microbial community and molecular docking simulations. The results showed that phenol (0-300 mg/L) did not significantly inhibit anammox. However, phenol did activate denitrification, which increased the nitrogen removal rate (NRR) by 0.94 kg N/(m3·d). Moreover, when phenol concentration reached t400 mg/L, the NRR was inhibited by 70%, while the extracellular polymeric substance (EPS) of granular sludge was reduced. Phenol resulted in the reduction of Candidatus_Kuenenia and promoted the proliferation of phenol-degrading denitrifying bacteria, Azoarcus and Thauera. Molecular docking indicated that phenol, 2-nitrophenol and 4-nitrophenol could bind the nitrite reductase (NirS), which prevented the first step of the anammox reaction.
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Affiliation(s)
- Di Luo
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Jie Qian
- School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
| | - Xing Jin
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Li Zhang
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Kun You
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Peng-Fei Yu
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
| | - Jin-Xiang Fu
- School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China.
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28
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Li J, Gao F, Chen X, Zhang Y, Dong H. Insights into nitrogen removal from seawater-based wastewater through marine anammox bacteria under ampicillin stress: Microbial community evolution and genetic response. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127597. [PMID: 34782200 DOI: 10.1016/j.jhazmat.2021.127597] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/26/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Global spread of ampicillin (AMP) in the aquatic environment have attracted much attention recently. Marine anammox bacteria (MAB) have potentials in saline wastewater treatment due to their good salt tolerance. However, to date, the effect resulting from AMP on MAB is still unknown. Herein, the effect of AMP on MAB, involving microbial community evolution and genetic response, was investigated for the first time. A lab-scale reactor inoculated by MAB sludge was operated under saline condition (35 g/L) and AMP stress of different gradients. Within 200 cycles, nitrogen removal performance was monitored and sludge samples were withdrawn for high-throughput sequencing analyses and qPCR. The results confirmed that the nitrogen removal capacity of MAB declined with increasing AMP dosage, and almost collapsed at 300 mg/L AMP. The total nitrogen removal rate and specific anammox activity finally dropped to 0.17 kg N m-3 d-1 and 101.86 mg N g-1VSS d-1, respectively. Pseudoalteromonas (38.13%) dominated the reactor on Cycle 190, which formed a new symbiosis with MAB. And the emergence of oleophilic bacteria such as Colwellia (2.53%) was also observed. Moreover, antibiotic resistance genes were detected with increased abundance and diversity, indicating the AMP dosing significantly promoted microbial community evolution and genetic response.
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Affiliation(s)
- Jin Li
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Fei Gao
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Xiuqin Chen
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Yulong Zhang
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Huiyu Dong
- National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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29
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Yuan Z, Chen Y, Zhang M, Qin Y, Zhang M, Mao P, Yan Y. Efficient nitrite accumulation and elemental sulfur recovery in partial sulfide autotrophic denitrification system: Insights of seeding sludge, S/N ratio and flocculation strategy. CHEMOSPHERE 2022; 288:132388. [PMID: 34695485 DOI: 10.1016/j.chemosphere.2021.132388] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/14/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
Partial sulfide autotrophic denitrification (PSAD) has been proposed as a promising process to achieve elemental sulfur recovery and nitrite accumulation, which is required for anaerobic ammonium oxidation reaction. This study investigated the effect of seeding sludge on the start-up performance of PSAD process, with different sludge taken from the oxidation zone (S-o) of wastewater treatment plants, partial denitrification reactor (S-PD), and anoxic/oxic reactor (S-A/O). The results showed that the PSAD process could be achieved rapidly in three systems on day 22, 29 and 26, respectively. In particular, the S-O system completed the start-up in the shortest time of 22 d, with NO3--N and S2- removal efficiency of 85.3% and 99.3%, respectively. Selected the S-O system to operate long term, the nitrite (NO2--N) and biological elemental sulfur (S0) accumulation efficiencies were systematically investigated under different S/N ratios (in a range of 0.71-1.2). The maximum NO2--N and S0 accumulation efficiencies were 85.2% and 73.5%, respectively, at the S/N ratio of 1.1. In addition, the separation and recovery of S0 in effluent was achieved by employing polyaluminum chloride (PAC) as a flocculant. Using 2D Gaussian function as quadratic model for the maximizing of S0 flocculant efficiency (SFR), an optimal condition of PAC dosage 7.92 mL/L and pH 5.14 was obtained, and the SFR reached 94.1%, under such conditions. The findings offered useful information to facilitate the application of the PSAD process.
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Affiliation(s)
- Zhongling Yuan
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China
| | - Yongzhi Chen
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China.
| | - Ming Zhang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China
| | - Yanrong Qin
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China
| | - Minan Zhang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China
| | - Peiyue Mao
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China
| | - Yuan Yan
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, PR China; Technical Center of Sewage Treatment Industry in Gansu, Lanzhou, 730070, PR China; Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou, 730070, PR China
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30
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Zhu W, Van Tendeloo M, Xie Y, Timmer MJ, Peng L, Vlaeminck SE. Storage without nitrite or nitrate enables the long-term preservation of full-scale partial nitritation/anammox sludge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:151330. [PMID: 34717986 DOI: 10.1016/j.scitotenv.2021.151330] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/20/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Bioaugmentation with summer harvested sludge during winter could compensate for bacterial activity loss but requires that sludge activity can be restored after storage. This study assesses the effect of temperature and redox adjustment during the storage over 180 days of partial nitritation/anammox (PN/A) granular resp. floccular sludge from potato processing resp. sludge reject water treatment. Anoxic storage conditions (in the presence of nitrite or nitrate and the absence of oxygen) resulted in a loss of 80-100% of the anammox bacteria (AnAOB) activity capacity at 20 °C and 4 °C, while anaerobic conditions (without oxygen, nitrite, and nitrate) lost only 45-63%. Storage at 20 °C was more cost-effective compared to 4 °C, and this was confirmed in the sludge reactivation experiment (20 °C). Furthermore, AnAOB activity correlated negatively with the electrical conductivity level (R2 > 0.85, p < 0.05), so strong salinity increases should be avoided. No significant differences were found in the activity capacity of aerobic ammonia-oxidizing bacteria (AerAOB) under different storage conditions (p > 0.1). The relative abundance of dominant AnAOB (Candidatus Brocadia) and AerAOB genera (Nitrosomonas) remained constant in both sludges. In conclusion, preserving PN/A biomass without cooling and nitrite or nitrate addition proved to be a cost-effective strategy.
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Affiliation(s)
- Weiqiang Zhu
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Michiel Van Tendeloo
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Yankai Xie
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Marijn Juliaan Timmer
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Lai Peng
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Siegfried E Vlaeminck
- Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerpen, Belgium.
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31
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Li Y, Liu Y, Luo J, Li YY, Liu J. Emerging onsite electron donors for advanced nitrogen removal from anammox effluent of leachate treatment: A review and future applications. BIORESOURCE TECHNOLOGY 2021; 341:125905. [PMID: 34523566 DOI: 10.1016/j.biortech.2021.125905] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/29/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
Partial nitrification-anammox process is promising in leachate treatment, but the 11% residue nitrate limits the total nitrogen removal efficiency. Denitrification or partial denitrification and anammox are both practical polishing processes of anammox effluent, requiring extra electron donors. Fortunately, there are organic matter, sulfide and methane in leachate or produced by leachate treatment, which can serve as onsite electron donors. In this review, the mechanisms and processes using these three kinds of electron donors for residue nitrate reduction in anammox effluent of leachate are systematically summarized and discussed. It can be concluded that, biodegradable organic matter is an effective electron donor, sulfide is a promising electron donor, methane is a potential electron donor. Two possible applications in future based on anammox treatment of fresh and mature leachate using sulfide and methane as onsite electron donors are proposed. Through sulfide reutilization, energy-saving with about 14% of aeration reduction can be achieved.
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Affiliation(s)
- Yanyan Li
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yanxu Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Jinghuan Luo
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
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Harb R, Laçin D, Subaşı I, Erguder TH. Denitrifying anaerobic methane oxidation (DAMO) cultures: Factors affecting their enrichment, performance and integration with anammox bacteria. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 295:113070. [PMID: 34153588 DOI: 10.1016/j.jenvman.2021.113070] [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: 02/15/2021] [Revised: 05/16/2021] [Accepted: 06/09/2021] [Indexed: 06/13/2023]
Abstract
The recently discovered process, denitrifying anaerobic methane oxidation (DAMO), links the carbon and nitrogen biogeochemical cycles via coupling the anaerobic oxidation of methane to denitrification. The DAMO process, in this respect, has the potential to mitigate the greenhouse effect through the assimilation of dissolved methane. Denitrification via methane oxidation rather than organic matter, provides a new perspective to performing this once thought to be well established process. The two main species responsible for this process are "Candidatus Methylomirabilis oxyfera (M. oxyfera), and "Candidatus Methanoperedens nitroreducens" (M. nitroreducens). M. oxyfera is responsible of reducing nitrite while M. nitroreducens reduces nitrate to nitrite. These two microorganisms, despite their different pathways, were found to exist together in nature through a syntrophic relationship. Their co-existence with anaerobic ammonium oxidation (Anammox) bacteria was also revealed in the last decade. Anammox bacteria are chemolithoautotrophs, converting ammonium and nitrite to N2 and nitrate. They are responsible for the release of more than 50% of oceanic N2, hence play an important role in the global nitrogen cycle. Factors leading to the enrichment of DAMO cultures and their cultivation with Anammox cultures are of significance for improved nitrogen removal systems with decreased greenhouse effect, and even for further full-scale applications. This study, therefore, aims to present an updated review of the DAMO process, by focusing on the factors that might have a significant role in enrichment of DAMO microorganisms and their co-existence with Anammox bacteria. Factors such as temperature, pH, inoculum and feed type, trace metals and reactor configuration are among the ones discussed in detail. Factors, which have not been investigated, are also elucidated to provide a better understanding of the process and set research goals that will aid in the development of DAMO-centered wastewater treatment alternatives.
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Affiliation(s)
- Rayaan Harb
- Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey
| | - Dilan Laçin
- Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey
| | - Irmak Subaşı
- Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey
| | - Tuba H Erguder
- Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey.
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Impact of increasing sulfide addition on the nitrogen removal and microbial community of CANON process in membrane bioreactor. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Huang S, Yu D, Chen G, Wang Y, Tang P, Liu C, Tian Y, Zhang M. Realization of nitrite accumulation in a sulfide-driven autotrophic denitrification process: Simultaneous nitrate and sulfur removal. CHEMOSPHERE 2021; 278:130413. [PMID: 33823349 DOI: 10.1016/j.chemosphere.2021.130413] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/28/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
The study was based on the removal of nitrate and sulfide, and aimed to nitrite accumulation. The process of autotrophic denitrification driven by sulfide as an electron donor was investigated in a sequencing batch reactor. The research showed that autotrophic denitrification successfully started on day 22, and the removal rates of NO3--N and S2--S were 95.8% and 100%, respectively, when the S/N molar ratio was 1.45. When the S/N ratio was reduced to 0.94, the phenomenon of NO2--N accumulation was observed. NO2--N continuously accumulated, and the maximum accumulation rate was 55.3% when the S/N ratio was 0.8. In the batch test, the study showed that NO2--N accumulation was optimal when the S/N ratio was 0.8, and the NO2--N concentration increased with increasing NO3--N concentration at the same S/N ratio. Microbial communities also changed based on the high-throughput analysis, and Proteobacteria (59.5%-84%) was the main phylum. Arenimonas (11.4%-28.2%) and uncultured_f_ Chromatiaceae (5.7%-27.5%) were the dominant bacteria, which complete denitrification and desulfurization throughout the operating system. Therefore, this study provided a theoretical basis for the simultaneous removal of NO3--N and S2--S, as well as the accumulation of nitrite, and provided material support for anaerobic ammonia oxidation technology.
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Affiliation(s)
- Shuo Huang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China; Shandong Provincial Building Design Institute, Jinan, 250012, PR China
| | - Deshuang Yu
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Guanghui Chen
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China; National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing, 100124, PR China.
| | - Yanyan Wang
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, PR China
| | - Peng Tang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Chengcheng Liu
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Yuan Tian
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China
| | - Meng Zhang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China
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Shi X, Li J, Wang X, Zhang X, Tang L. Effect of the gradual increase of Na 2SO 4 on performance and microbial diversity of aerobic granular sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112696. [PMID: 33984643 DOI: 10.1016/j.jenvman.2021.112696] [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: 12/21/2020] [Revised: 04/16/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Aerobic granular sludge (AGS) is a promising technology in treating saline wastewater. The effects of sodium sulfate on contaminant removal performance and sludge characteristics of AGS were studied. The results showed that under the stress of sodium sulfate, AGS kept good removal performance of ammonia nitrogen (NH+ 4-N), chemical oxygen demand (COD), and total nitrogen (TN), with removal efficiency reaching 98.7%, 91.5% and 62.7%, respectively. When sodium sulfate reached 14700 mg/L, nitrite oxidizing bacteria (NOB) were inhibited and nitrite accumulation occurred, but it had little impact on total phosphorus (TP) removal. Under the stress of sodium sulfate, compactness and settling performance of AGS was enhanced. The microbial community greatly varied and the microbial diversity of aerobic granular sludge has decreased under the stress of sodium sulfate. The study reveals that AGS has great potential in application on treating saline wastewater.
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Affiliation(s)
- Xianbin Shi
- Department of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, China
| | - Ji Li
- Department of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, China
| | - Xiaochun Wang
- Department of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, China
| | - Xiaolei Zhang
- Department of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, China.
| | - Liaofan Tang
- Department of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen, 518055, China
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Ismail S, Elreedy A, Fujii M, Ni SQ, Tawfik A, Elsamadony M. Fatigue of anammox consortia under long-term 1,4-dioxane exposure and recovery potential: N-kinetics and microbial dynamics. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125533. [PMID: 34030408 DOI: 10.1016/j.jhazmat.2021.125533] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/22/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Long-term exposure of anammox process to 1,4-dioxane was investigated using periodic anammox baffled reactor (PABR) under different 1,4-dioxane concentrations. The results generally indicated that PABR (composed of 4 compartments) has robust resistance to 10 mg-dioxane/L. The 1st compartment acted as a shield to protect subsequent compartments from 1,4-dioxane toxicity through secretion of high extracellular polymeric substance (EPS) of 152.9 mg/gVSS at 10 mg-dioxane/L. However, increasing 1,4-dioxane to 50 mg/L significantly inhibited anammox bacteria; e.g., ~ 93% of total nitrogen removal was lost within 14 days. The inhibition of anammox process at this dosage was most likely due to bacterial cell lysis, resulting in the decrease of EPS secretion and specific anammox activity (SAA) to 105.9 mg/gVSS and 0.04 mg N/gVSS/h, respectively, in the 1st compartment. However, anammox bacteria were successfully self-recovered within 41 days after the cease of 1,4-dioxane exposure. The identification of microbial compositions further emphasized the negative impacts of 1,4-dioxane on abundance of C. Brocadia among samples. Furthermore, the development of genus Planococcus in the 1st compartment, where removal of 1,4-dioxane was consistently observed, highlights its potential role as anoxic 1,4-dioxane degrader. Overall, long-term exposure to 1,4-dioxane should be controlled not exceeding 10 mg/L for a successful application.
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Affiliation(s)
- Sherif Ismail
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China; Environmental Engineering Department, Zagazig University, Zagazig 44519, Egypt; Suzhou Research Institute, Shandong University, Suzhou, Jiangsu 215123, China
| | - Ahmed Elreedy
- Sanitary Engineering Department, Alexandria University, Alexandria 21544, Egypt; Department of Applied Biology, Institute for Applied Biosciences, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Manabu Fujii
- Civil and Environmental Engineering Department, Tokyo Institute of Technology, Meguro-Ku, Tokyo 152-8552, Japan
| | - Shou-Qing Ni
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China; Suzhou Research Institute, Shandong University, Suzhou, Jiangsu 215123, China.
| | - Ahmed Tawfik
- Water Pollution Research Department, National Research Centre, Giza 12622, Egypt
| | - Mohamed Elsamadony
- Civil and Environmental Engineering Department, Tokyo Institute of Technology, Meguro-Ku, Tokyo 152-8552, Japan; Department of Public Works Engineering, Faculty of Engineering, Tanta University, 31521 Tanta City, Egypt
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Shi LD, Wang Z, Liu T, Wu M, Lai CY, Rittmann BE, Guo J, Zhao HP. Making good use of methane to remove oxidized contaminants from wastewater. WATER RESEARCH 2021; 197:117082. [PMID: 33819663 DOI: 10.1016/j.watres.2021.117082] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/13/2021] [Accepted: 03/20/2021] [Indexed: 06/12/2023]
Abstract
Being an energetic fuel, methane is able to support microbial growth and drive the reduction of various electron acceptors. These acceptors include a broad range of oxidized contaminants (e.g., nitrate, nitrite, perchlorate, bromate, selenate, chromate, antimonate and vanadate) that are ubiquitously detected in water environments and pose threats to human and ecological health. Using methane as electron donor to biologically reduce these contaminants into nontoxic forms is a promising solution to remediate polluted water, considering that methane is a widely available and inexpensive electron donor. The understanding of methane-based biological reduction processes and the responsible microorganisms has grown in the past decade. This review summarizes the fundamentals of metabolic pathways and microorganisms mediating microbial methane oxidation. Experimental demonstrations of methane as an electron donor to remove oxidized contaminants are summarized, compared, and evaluated. Finally, the review identifies opportunities and unsolved questions that deserve future explorations for broadening understanding of methane oxidation and promoting its practical applications.
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Affiliation(s)
- Ling-Dong Shi
- College of Environmental and Resource Science, Zhejiang University, Hangzhou, Zhejiang, China; Zhejiang Province Key Lab Water Pollution Control & Environment, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhen Wang
- College of Environmental and Resource Science, Zhejiang University, Hangzhou, Zhejiang, China; Zhejiang Province Key Lab Water Pollution Control & Environment, Zhejiang University, Hangzhou, Zhejiang, China
| | - Tao Liu
- Advanced Water Management Centre, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Mengxiong Wu
- Advanced Water Management Centre, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Chun-Yu Lai
- Advanced Water Management Centre, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Bruce E Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, Arizona 85287-5701, U.S.A
| | - Jianhua Guo
- Advanced Water Management Centre, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia.
| | - He-Ping Zhao
- College of Environmental and Resource Science, Zhejiang University, Hangzhou, Zhejiang, China; Zhejiang Province Key Lab Water Pollution Control & Environment, Zhejiang University, Hangzhou, Zhejiang, China.
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Yuan L, Wang T, Xing F, Wang X, Yun H. Enhancement of Anammox performances in an ABR at normal temperature by the low-intensity ultrasonic irradiation. ULTRASONICS SONOCHEMISTRY 2021; 73:105468. [PMID: 33517095 PMCID: PMC7848630 DOI: 10.1016/j.ultsonch.2021.105468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/03/2021] [Accepted: 01/09/2021] [Indexed: 06/12/2023]
Abstract
A lab-scale ultrasound enhancing Anammox reactor (ABRU) was established and irradiated once a week by ultrasound with the optimal parameter (frequency of 25.0 kHz, intensity of 1.00 W cm-2 and exposure time of 36.0 s) obtained by response surface methodology (RSM). ABRU and the controlled Anammox reactor (ABRC) without ultrasonic treatment were operated in parallel. The start-up time of Anammox process in ABRU (59 d) was shorter than that in ABRC (69 d). At the end of the nitrogen load-enhancing period, NLR (0.500 kg N m-3 d-1) and NRR (0.430 kg N m-3 d-1) in ABRU were both higher than NLR (0.400 kg N m-3 d-1) and NRR (0.333 kg N m-3 d-1) in ABRC. The results of RTQ-PCR demonstrated that the specific low-intensity ultrasound irradiation improved the enrichment levels of AnAOB in mature sludge. SEM images and the observation of the macroscopic morphology of mature sludge showed that the ultrasound irradiation strengthened the formation of Anammox granular sludge, thereby improved the interception capacity and impact load resistance of the reactor, and enhanced the nitrogen removal performance in ABRU. The ultrasonic enhanced Anammox reactor based on an ABR with the optimal parameters can promote the rapid start-up and efficient and stable operation of the Anammox process at normal temperature (around 25.0 °C).
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Affiliation(s)
- Luzi Yuan
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, Department of Environmental Engineering, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China
| | - Tao Wang
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, Department of Environmental Engineering, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China.
| | - Fanghua Xing
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, Department of Environmental Engineering, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China
| | - Xian Wang
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, Department of Environmental Engineering, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China
| | - Hongying Yun
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, Department of Environmental Engineering, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, PR China
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Zhang ZZ, Zhang Y, Cheng YF, Jin RC. Linear anionic surfactant (SDBS) destabilized anammox process through sludge disaggregation and metabolic inhibition. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123641. [PMID: 33264860 DOI: 10.1016/j.jhazmat.2020.123641] [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: 05/16/2020] [Revised: 07/29/2020] [Accepted: 08/04/2020] [Indexed: 06/12/2023]
Abstract
The increase of emerging contaminants, such as surfactants, is one of the major challenges to biological wastewater treatment. However, the potential impact of linear alkylbenzene sulphonates (LAS), a major class of anionic surfactants, on anammox process is unclear. The long-term effects of sodium dodecyl benzene sulfonate (SDBS, as a model LAS) on reactor performance, microbial community and sludge properties were investigated in this study. The presence of 5 mg L-1 SDBS promoted the release of extracellular microbial products from anammox granules and the wash-out of anammox population via effluent. Despite sludge disaggregation, the reactor performance was robust to the exposure of 5 mg L-1 SDBS due to functional redundancy. With the further increase of SDBS to 10 mg L-1, the metabolic activity of anammox biomass and the transcription and post-translation of hydrazine dehydrogenase were significantly decreased. The potential mechanism might be associated with the damage on cell membrane that induced the leakage of intracellular matrix. These results highlight the need to consider the potential risk of LAS to operation of anammox process in biological wastewater treatment plant.
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Affiliation(s)
- Zheng-Zhe Zhang
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yu Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Ya-Fei Cheng
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ren-Cun Jin
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
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40
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Pang Y, Wang J, Li S, Ji G. Long-term sulfide input enhances chemoautotrophic denitrification rather than DNRA in freshwater lake sediments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 270:116201. [PMID: 33321438 DOI: 10.1016/j.envpol.2020.116201] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/09/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
Partitioning between nitrate reduction pathways, denitrification and dissimilatory nitrate reduction to ammonium (DNRA) determines the fate of nitrate removal and thus it is of great ecological importance. Sulfide (S2-) is a potentially important factor that influences the role of denitrification and DNRA. However, information on the impact of microbial mechanisms for S2- on the partitioning of nitrate reduction pathways in freshwater environments is still lacking. This study investigated the effects of long-term (108 d) S2- addition on nitrate reduction pathways and microbial communities in the sediments of two different freshwater lakes. The results show that the increasing S2- addition enhanced the coupling of S2- oxidation with denitrification instead of DNRA. The sulfide-oxidizing denitrifier, Thiobacillus, was significantly enriched in the incubations of both lake samples with S2- addition, which indicates that it may be the key genus driving sulfide-oxidizing denitrification in the lake sediments. During S2- incubation of the Hongze Lake sample, which had lower inherent organic carbon (C) and sulfate (SO42-), Thiobacillus was more enriched and played a dominant role in the microbial community; while during that of the Nansi Lake sample, which had higher inherent organic C and SO42-, Thiobacillus was less enriched, but increasing abundances of sulfate reducing bacteria (Desulfomicrobium, Desulfatitalea and Geothermobacter) were observed. Moreover, sulfide-oxidizing denitrifiers and sulfate reducers were enriched in the Nansi Lake control treatment without external S2- input, which suggests that internal sulfate release may promote the cooperation between sulfide-oxidizing denitrifiers and sulfate reducers. This study highlights the importance of sulfide-driven denitrification and the close coupling between the N and S cycles in freshwater environments, which are factors that have often been overlooked.
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Affiliation(s)
- Yunmeng Pang
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing, 100871, PR China; Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Shengjie Li
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing, 100871, PR China
| | - Guodong Ji
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing, 100871, PR China.
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Delgado Vela J, Bristow LA, Marchant HK, Love NG, Dick GJ. Sulfide alters microbial functional potential in a methane and nitrogen cycling biofilm reactor. Environ Microbiol 2020; 23:1481-1495. [PMID: 33295079 DOI: 10.1111/1462-2920.15352] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 12/04/2020] [Indexed: 11/30/2022]
Abstract
Cross-feeding of metabolites between coexisting cells leads to complex and interconnected elemental cycling and microbial interactions. These relationships influence overall community function and can be altered by changes in substrate availability. Here, we used isotopic rate measurements and metagenomic sequencing to study how cross-feeding relationships changed in response to stepwise increases of sulfide concentrations in a membrane-aerated biofilm reactor that was fed with methane and ammonium. Results showed that sulfide: (i) decreased nitrite oxidation rates but increased ammonia oxidation rates; (ii) changed the denitrifying community and increased nitrous oxide production; and (iii) induced dissimilatory nitrite reduction to ammonium (DNRA). We infer that inhibition of nitrite oxidation resulted in higher nitrite availability for DNRA, anammox, and nitrite-dependent anaerobic methane oxidation. In other words, sulfide likely disrupted microbial cross-feeding between AOB and NOB and induced cross-feeding between AOB and nitrite reducing organisms. Furthermore, these cross-feeding relationships were spatially distributed between biofilm and planktonic phases of the reactor. These results indicate that using sulfide as an electron donor will promote N2 O and ammonium production, which is generally not desirable in engineered systems.
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Affiliation(s)
- Jeseth Delgado Vela
- Department of Civil and Environmental Engineering, Howard University, Washington, DC, USA
| | - Laura A Bristow
- Department of Biology, University of Southern Denmark, Odense, Denmark
| | | | - Nancy G Love
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Gregory J Dick
- Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI, USA
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42
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Zhang Q, Zhang X, Bai YH, Xia WJ, Ni SK, Wu QY, Fan NS, Huang BC, Jin RC. Exogenous extracellular polymeric substances as protective agents for the preservation of anammox granules. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 747:141464. [PMID: 32795803 DOI: 10.1016/j.scitotenv.2020.141464] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/17/2020] [Accepted: 08/01/2020] [Indexed: 05/14/2023]
Abstract
The preservation of anammox granules is of great significance for the rapid start-up of the anammox process and improvement of performance stability. Therefore, it is necessary to explore an economical and stable preservation strategy. Exogenous extracellular polymeric substances (EPS) were used as protective agents for the preservation of anammox granules in this study. In brief, EPS from anammox sludge (A-EPS) and denitrifying sludge (D-EPS) were added to preserve anammox sludge at 4 °C and room temperature (15-20 °C). The results showed that A-EPS addition at 4 °C was the optimal condition for the preservation of anammox granules. After 90 days of preservation, the specific anammox activity (SAA) of the anammox granules remained at 92.7 ± 2.2 mg N g-1 VSS day-1 (remaining ratio of 33.4%), while that of the sludge with D-EPS addition at the same temperature was only 77.1 ± 3.2 mg N g-1 VSS day-1 (remaining ratio of 27.8%). The nitrogen removal efficiency of the experimental group with D-EPS at room temperature was 85.9%, and that of the A-EPS group reached 90.6% under the same temperature conditions. The abundance of the functional genes hzsA, hdh and nirS of the sludge (4 °C; A-EPS addition) after recovery were 138.5%, 317.1%, and 375.9%, respectively, of those of sludge from the D-EPS-added group at the same temperature. RDA revealed the contribution of proteins to the preservation process. Overall, this study provides an economical and robust strategy for the preservation of anammox granules.
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Affiliation(s)
- Quan Zhang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Xian Zhang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yu-Hui Bai
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Wen-Jing Xia
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Shao-Kai Ni
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Qing-Yuan Wu
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Nian-Si Fan
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
| | - Bao-Cheng Huang
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ren-Cun Jin
- School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
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43
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Yang S, Xu S, Boiocchi R, Mohammed A, Li X, Ashbolt NJ, Liu Y. Long-term continuous partial nitritation-anammox reactor aeration optimization at different nitrogen loading rates for the treatment of ammonium rich digestate lagoon supernatant. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.08.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Yu X, Nishimura F, Hidaka T. Anammox reactor exposure to thiocyanate: Long-term performance and microbial community dynamics. BIORESOURCE TECHNOLOGY 2020; 317:123960. [PMID: 32822893 DOI: 10.1016/j.biortech.2020.123960] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/29/2020] [Accepted: 08/02/2020] [Indexed: 06/11/2023]
Abstract
Anaerobic ammonium oxidation (anammox) is an autotrophic denitrification process that has broad application potential for treating coking wastewaters. The present study estimated the effects of thiocyanate (SCN-), a common pollutant in coking wastewaters, on anammox processes and microbial communities in anammox reactors for over two years of continuous exposure. The addition of SCN- (from 50 to 200 mg L-1) showed negative effects on the denitrification performance of the anammox reactors. In SCN--dosed reactors, increased effluent ammonium concentrations indicated the occurrence of SCN--based biodegradation processes. Microbial analysis revealed that the anammox species almost disappeared in the reactor dosed with SCN- at over 100 mg L-1. Instead, an abundance of chemolithoautotrophic bacteria belonging to the Thiobacillus genus demonstrated a linear increase with SCN- addition. The competition between anammox species and SCN--degrading microorganisms was expected to dominate the inhibition effects of SCN- addition on the performance of anammox reactors.
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Affiliation(s)
- Xiaolong Yu
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C1, Kyoto daigaku-Katsura, Kyoto 615-8540, Japan; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Fumitake Nishimura
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C1, Kyoto daigaku-Katsura, Kyoto 615-8540, Japan
| | - Taira Hidaka
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C1, Kyoto daigaku-Katsura, Kyoto 615-8540, Japan
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45
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Xu JJ, Cheng YF, Jin RC. Long-term effects of Fe 3O 4 NPs on the granule-based anaerobic ammonium oxidation process: Performance, sludge characteristics and microbial community. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122965. [PMID: 32474323 DOI: 10.1016/j.jhazmat.2020.122965] [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: 04/05/2020] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
The performance of anaerobic ammonium oxidation (anammox) granules were studied under long-term exposure to Fe3O4 NPs. The Fe3O4 NPs had no negative impacts on nitrogen removal performance with the addition of 2-200 mg L-1. The specific anammox activity (SAA) slightly decreased from 287.0 ± 13.2 to -253.0 ± 9.2 mg TN g-1VSS d-1 with the increase in Fe3O4 NPs level from 2 to 60 mg L-1, and then significantly enhanced to 381.8 ± 15.7 mg TN g-1VSS d-1 at 200 mg L-1 Fe3O4 NPs. And the change trends of the heme c content, extracellular polymeric substance amount and settling velocity were consistent with that of SAA. The Candidatus_Kuenenia was the dominant species during the entire experiment and its relative abundance was up to 33.4 % at the end the experiment. The results provide some useful information for comprehending the impact of Fe3O4 NPs on the performance of wastewater biological treatment systems.
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Affiliation(s)
- Jia-Jia Xu
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ya-Fei Cheng
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ren-Cun Jin
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
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46
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Cui Y, Gao J, Zhang D, Zhao Y, Wang Y. Rapid start-up of partial nitrification process using benzethonium chloride-a novel nitrite oxidation inhibitor. BIORESOURCE TECHNOLOGY 2020; 315:123860. [PMID: 32707510 DOI: 10.1016/j.biortech.2020.123860] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
Benzethonium chloride (BZC) is an antibacterial compound with extensive applications in various anti-infective products. However, the feasibility of attaining partial nitrification of municipal wastewater using BZC has not been reported. In this work, BZC was used for the first time to attain partial nitrification. Batch experiments indicated nitrite oxidizing bacteria (NOB) was more vulnerable to BZC than ammonia oxidizing bacteria (AOB). When activated sludge was treated only once with 0.023 g BZC·(g MLSS)-1 for 18 h, partial nitrification was attained at the 29th cycle with NAR of 97.46% and sustained 91 cycles in stability tests. Complimentary DNA sequencing analysis revealed the suppression of Nitrospira was the reason for partial nitrification. Oligotyping analysis indicated AOB could likely resist to BZC by both the species shifts and development of tolerance, while most NOB species could not adapt to BZC. This study revealed the feasibility of BZC as a novel NOB inhibitor.
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Affiliation(s)
- Yingchao Cui
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Jingfeng Gao
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.
| | - Da Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Yifan Zhao
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
| | - Yuwei Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China
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47
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Zhu W, Li J, Wang B, Chen G. Enhancement of pollutants removal from saline wastewater through simultaneous anammox and denitrification (SAD) process with glycine betaine addition. BIORESOURCE TECHNOLOGY 2020; 315:123784. [PMID: 32652439 DOI: 10.1016/j.biortech.2020.123784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 05/12/2023]
Abstract
Enhanced pollutants removal from saline wastewater was investigated in simultaneous anammox and denitrification (SAD) process with glycine betaine (GB) addition. Long-term operation indicated the optimal GB dose was around 0.4 mM, which enhanced both anammox and denitrifying activity by 30% and 45%, respectively. The total nitrogen and organic removal rates were 0.38 ± 0.2 kgN/m3/d and 0.34 ± 0.3 kgCOD/m3/d, respectively, which increased by 34.5% and 20.5%. Independent of GB dose, denitrifying activity was promoted, but anammox activity was drastically deteriorated after excessive GB addition. The optimal GB dose predicated by both Gaussian and Modified-Boltzmann models were 0.42-0.45 mM. Besides, the bacterial activity recovery after excessive GB addition could be analyzed by the Modified-Boltzmann model. With 1.5 mM GB, granular floatation occurred since numerous gas bubbles were inside the granules. In general, exogenous GB addition can mitigate salinity inhibition and promote pollutants removal from saline wastewater.
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Affiliation(s)
- Weiqiang Zhu
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China; Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Jin Li
- School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China; Department of Civil and Environmental Engineering, Water Technology Center, Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Bo Wang
- Department of Civil and Environmental Engineering, Water Technology Center, Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Guanghao Chen
- Department of Civil and Environmental Engineering, Water Technology Center, Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
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48
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Ma WJ, Li GF, Huang BC, Jin RC. Advances and challenges of mainstream nitrogen removal from municipal wastewater with anammox-based processes. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1899-1909. [PMID: 32306497 DOI: 10.1002/wer.1342] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/03/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Anaerobic ammonium oxidation (anammox) is a novel process of deammonification that exhibits superior ecological and economic potential compared to that of traditional heterotrophic processes. Although this process has been successfully implemented in treating high-strength nitrogen-contaminated wastewater, it still faces many challenges in treating mainstream municipal wastewater. This review aims to provide an overview of the status and challenges of mainstream anammox-based processes. The different configurations and crucial factors are discussed in this review. Finally, the future needs for feasible application are stated. PRACTITIONER POINTS: Factors restricting mainstream application of anammox-based processes are reviewed. Control strategies for selecting and maintaining anammox bacteria are discussed. Recent advances in nitrite production via partial nitrification or denitrification are summarized. Future needs for the feasible application of anammox-based nitrogen removal technology for mainstream municipal wastewater treatment are outlined.
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Affiliation(s)
- Wen-Jie Ma
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Gui-Feng Li
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Bao-Cheng Huang
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Ren-Cun Jin
- Laboratory of Water Pollution Remediation, School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
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49
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Yuan Y, Li X, Li BL. Autotrophic nitrogen removal characteristics of PN-anammox process enhanced by sulfur autotrophic denitrification under mainstream conditions. BIORESOURCE TECHNOLOGY 2020; 316:123926. [PMID: 32758922 DOI: 10.1016/j.biortech.2020.123926] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
Stabilization of nitrification process and reduction of NO3--N concentration in effluent are the keys to realize mainstream application of partial nitrification-anaerobic ammonia oxidation (PN-anammox) process. The sulfur-based autotrophic denitrification (SADN) process was coupled with the PN-anammox in a single reactor to enhance and stabilize the nitrogen removal performance, and the feasibility and reaction characteristics of the coupling system under mainstream conditions were investigated. The results showed that the NO3- of PN-anammox effluent dropped from 22 to 24 mg/L to 5 mg/L after the SADN process coupled, and the total nitrogen removal efficiency and total nitrogen removal rate reached 83.5% and 0.15 kg/(m3·d), respectively. This coupling system doesn't need to over-strengthen PN control. Batch experiments showed that sulfur autotrophic oxidizing bacteria used O2 to oxidize S2- in the coupling system, which competed with SADN to remove NO3-. Moreover, Nitrosomonas, Candidatus Brocadia and Thiobacillus were the main genera for nitrogen and sulfur conversion.
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Affiliation(s)
- Yan Yuan
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou 215009, China
| | - Xiang Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou 215009, China.
| | - Bo-Lin Li
- School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
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50
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Ntagia E, Chatzigiannidou I, Williamson AJ, Arends JBA, Rabaey K. Homoacetogenesis and microbial community composition are shaped by pH and total sulfide concentration. Microb Biotechnol 2020; 13:1026-1038. [PMID: 32126162 PMCID: PMC7264883 DOI: 10.1111/1751-7915.13546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 12/27/2022] Open
Abstract
Biological CO2 sequestration through acetogenesis with H2 as electron donor is a promising technology to reduce greenhouse gas emissions. Today, a major issue is the presence of impurities such as hydrogen sulfide (H2 S) in CO2 containing gases, as they are known to inhibit acetogenesis in CO2 -based fermentations. However, exact values of toxicity and inhibition are not well-defined. To tackle this uncertainty, a series of toxicity experiments were conducted, with a mixed homoacetogenic culture, total dissolved sulfide concentrations ([TDS]) varied between 0 and 5 mM and pH between 5 and 7. The extent of inhibition was evaluated based on acetate production rates and microbial growth. Maximum acetate production rates of 0.12, 0.09 and 0.04 mM h-1 were achieved in the controls without sulfide at pH 7, pH 6 and pH 5. The half-maximal inhibitory concentration (IC50 qAc ) was 0.86, 1.16 and 1.36 mM [TDS] for pH 7, pH 6 and pH 5. At [TDS] above 3.33 mM, acetate production and microbial growth were completely inhibited at all pHs. 16S rRNA gene amplicon sequencing revealed major community composition transitions that could be attributed to both pH and [TDS]. Based on the observed toxicity levels, treatment approaches for incoming industrial CO2 streams can be determined.
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Affiliation(s)
- Eleftheria Ntagia
- Center for Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653Ghent9000Belgium
| | - Ioanna Chatzigiannidou
- Center for Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653Ghent9000Belgium
| | - Adam J. Williamson
- Center for Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653Ghent9000Belgium
| | - Jan B. A. Arends
- Center for Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653Ghent9000Belgium
| | - Korneel Rabaey
- Center for Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653Ghent9000Belgium
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