1
|
Ortiz-Ardila AE, Celis C, Usack JG, Angenent LT, Labatut RA. Microaeration promotes volatile siloxanes conversion to methane and simpler monomeric products. BIORESOURCE TECHNOLOGY 2024; 400:130673. [PMID: 38583676 DOI: 10.1016/j.biortech.2024.130673] [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: 11/09/2023] [Revised: 03/27/2024] [Accepted: 04/05/2024] [Indexed: 04/09/2024]
Abstract
The ubiquitous use of volatile siloxanes in a myriad of product formulations has led to a widespread distribution of these persistent contaminants in both natural ecosystems and wastewater treatment plants. Microbial degradation under microaerobic conditions is a promising approach to mitigate D4 and D5 siloxanes while recovering energy in wastewater treatment plants. This study examined D4/D5 siloxanes biodegradation under both anaerobic and microaerobic conditions ( [Formula: see text] = 0, 1, 3 %) using wastewater sludge. Results show that the use of microaeration in an otherwise strictly anaerobic environment significantly enhances siloxane conversion to methane. 16S rRNA gene sequencing identified potential degraders, including Clostridium lituseburense, Clostridium bifermentans and Synergistales species. Furthermore, chemical analysis suggested a stepwise siloxane conversion preceding methanogenesis under microaerobic conditions. This study demonstrates the feasibility of microaerobic siloxane biodegradation, laying groundwork for scalable removal technologies in wastewater treatment plants, ultimately highlighting the importance of using bio-based approaches in tackling persistent pollutants.
Collapse
Affiliation(s)
- A E Ortiz-Ardila
- Environmental Biotechnology Group, Department of Geosciences, University of Tübingen, Tübingen, Germany; Department of Hydraulic and Environmental Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - C Celis
- Environmental Technology and Materials Centre, Department of Chemistry, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - J G Usack
- Department of Food Science and Technology, University of Georgia, Athens, Georgia
| | - L T Angenent
- Environmental Biotechnology Group, Department of Geosciences, University of Tübingen, Tübingen, Germany; AG Angenent, Max Planck Institute for Biology, Tübingen, Germany; Department of Biological and Chemical Engineering, Aarhus University, Aarhus C, Denmark; The Novo Nordisk Foundation CO(2) Research Center (CORC), Aarhus University, Aarhus C, Denmark
| | - R A Labatut
- Department of Hydraulic and Environmental Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile.
| |
Collapse
|
2
|
Giangeri G, Tsapekos P, Gaspari M, Ghofrani-Isfahani P, Hong Lin MKT, Treu L, Kougias P, Campanaro S, Angelidaki I. Magnetite Alters the Metabolic Interaction between Methanogens and Sulfate-Reducing Bacteria. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16399-16413. [PMID: 37862709 PMCID: PMC10620991 DOI: 10.1021/acs.est.3c05948] [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: 07/25/2023] [Revised: 09/28/2023] [Accepted: 09/28/2023] [Indexed: 10/22/2023]
Abstract
It is known that the presence of sulfate decreases the methane yield in the anaerobic digestion systems. Sulfate-reducing bacteria can convert sulfate to hydrogen sulfide competing with methanogens for substrates such as H2 and acetate. The present work aims to elucidate the microbial interactions in biogas production and assess the effectiveness of electron-conductive materials in restoring methane production after exposure to high sulfate concentrations. The addition of magnetite led to a higher methane content in the biogas and a sharp decrease in the level of hydrogen sulfide, indicating its beneficial effects. Furthermore, the rate of volatile fatty acid consumption increased, especially for butyrate, propionate, and acetate. Genome-centric metagenomics was performed to explore the main microbial interactions. The interaction between methanogens and sulfate-reducing bacteria was found to be both competitive and cooperative, depending on the methanogenic class. Microbial species assigned to the Methanosarcina genus increased in relative abundance after magnetite addition together with the butyrate oxidizing syntrophic partners, in particular belonging to the Syntrophomonas genus. Additionally, Ruminococcus sp. DTU98 and other species assigned to the Chloroflexi phylum were positively correlated to the presence of sulfate-reducing bacteria, suggesting DIET-based interactions. In conclusion, this study provides new insights into the application of magnetite to enhance the anaerobic digestion performance by removing hydrogen sulfide, fostering DIET-based syntrophic microbial interactions, and unraveling the intricate interplay of competitive and cooperative interactions between methanogens and sulfate-reducing bacteria, influenced by the specific methanogenic group.
Collapse
Affiliation(s)
- Ginevra Giangeri
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Panagiotis Tsapekos
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Maria Gaspari
- Department
of Hydraulics, Soil Science and Agricultural Engineering, Faculty
of Agriculture, Aristotle University of
Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Parisa Ghofrani-Isfahani
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Marie Karen Tracy Hong Lin
- National
Centre for Nano Fabrication and Characterization, Technical University of Denmark, Kgs, DK-2800 Lyngby, Denmark
| | - Laura Treu
- Department
of Biology, University of Padova, Via U. Bassi 58/b, 35121 Padua, Italy
| | - Panagiotis Kougias
- Hellenic
Agricultural Organization Dimitra, Soil
and Water Resources Institute, Thermi, GR-54124 Thessaloniki, Greece
| | - Stefano Campanaro
- Department
of Biology, University of Padova, Via U. Bassi 58/b, 35121 Padua, Italy
| | - Irini Angelidaki
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| |
Collapse
|
3
|
Tian H, Liu J, Zhang Y, Liu Q. Stress response and signalling of a low-temperature bioaugmentation system in decentralized wastewater treatment: Degradation characteristics, community structure, and bioaugmented mechanisms. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118257. [PMID: 37290305 DOI: 10.1016/j.jenvman.2023.118257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/16/2023] [Accepted: 05/23/2023] [Indexed: 06/10/2023]
Abstract
Low temperatures present challenges for stable wastewater treatment operations in cold regions. Low-temperature effective microorganisms (LTEM) were added as a bioaugmentation strategy at a decentralized treatment facility to improve performance. The effects of a low-temperature bioaugmentation system (LTBS) with LTEM at low temperatures (4 °C) on organic pollutant performance, microbial community changes, and the metabolic pathways of functional genes and functional enzymes were studied. To explore the bioaugmentation mechanism of LTBS based on stress response and signalling. The results showed that the start-up time of the LTBS (S2) with LTEM was shorter (8 days) and that it removed COD and NH4+-N at higher rates (87 % and 72 %, respectively) at 4 °C. LTEM effectively degraded complex macromolecular organics into small molecular organics, and decomposing sludge flocs and the changing the extracellular polymeric substances (EPS) structure removed more organics and nitrogen. LTEM and local microbial communities (nitrifying and denitrifying bacteria) improved the ability of organic matter degradation and denitrification of the LTBS and formed a core microbial community dominated by LTEM (Bacillus and Pseudomonas). Finally, based on the functional enzymes and metabolic pathways of the LTBS, a low-temperature strengthening mechanism consisting of 6 cold stress responses and signal pathways under low temperatures was formed. This study demonstrated that the LTEM-dominated LTBS could provide an engineering alternative for future decentralized wastewater treatment in cold regions.
Collapse
Affiliation(s)
- Hongyu Tian
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China; Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture), Ministry of Education, Beijing, 100044, China
| | - Jianwei Liu
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture), Ministry of Education, Beijing, 100044, China.
| | - Yuxiu Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China.
| | - Qianqian Liu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| |
Collapse
|
4
|
Tian L, Wang L, Zhang X, Huang X, Wang F, Zhu S, Li X, Guan Y. Multi-omics analysis on seasonal variations of the biofilm microbial community in a full-scale pre-denitrification biofilter. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:24284-24298. [PMID: 36334202 DOI: 10.1007/s11356-022-23539-y] [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: 01/11/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
The seasonal variations of biofilm communities in a municipal wastewater treatment plant were investigated using multi-omics techniques. The abundance of the main phyla of microorganisms varied with summer (July 2019) and winter (January 2019) samples considerably, the Bacteroidetes enriched in winter and Chloroflexi in summer. The results of metaproteomic and metagenomic showed that most of the functional microorganisms belonged to the Betaproteobacteria class, and the enrichment of Flavobacteria class in winter guaranteed the stability of denitrification performance to some extent. Seasonal variations affected the proteomic expression profiling, a total of 2835 differentially expressed proteins identified were significantly enriched in quorum sensing, two-component system, ribosome, benzoate degradation, butanoate metabolism, tricarboxylic acid cycle (TCA cycle), and cysteine and methionine metabolism pathways. With the expression of nitrogen metabolic proteins decreases in winter, the overall expression of denitrification-related enzymes in winter was much lower than that in summer, the nitrogen metabolism pathway varied significantly. Seasonal variations also induced the alteration of the biofilm metabolite profile; a total of 66 differential metabolites, 8 potential biomarkers, and 8 perturbed metabolic pathways such as TCA cycle were detected. It was found that most of the perturbed pathways are directly related to nitrogen metabolism, and several amino acids and organic acids associated with the TCA cycle were significantly perturbed, the accumulation of TCA cycle intermediates, ornithine, and L-histidine in winter might be conducive to resisting cold temperatures. Furthermore, the correlation between biofilm microbial communities and metabolites was identified by the combined analysis of metabolomic and metaproteomic. The differences of microbial community structure, function, and metabolism between winter and summer in a full-scale pre-denitrification biofilter were revealed for the first time, strengthening our understanding of the microbial ecology of biofilm communities.
Collapse
Affiliation(s)
- Lu Tian
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Lin Wang
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Xiaofeng Zhang
- Qingdao Water Development Service Center, Qingdao, 266071, China
| | - Xuda Huang
- Qingdao Water Development Service Center, Qingdao, 266071, China
| | - Fuhao Wang
- Qingdao Water Affairs Group, Environmental Energy Co., Ltd, Qingdao, 266075, China
| | - Sifu Zhu
- Qingdao Haibo River Water Operation Co., Ltd, Qingdao, 266021, China
| | - Xueqiang Li
- Qingdao Haibo River Water Operation Co., Ltd, Qingdao, 266021, China
| | - Ying Guan
- Qingdao Haibo River Water Operation Co., Ltd, Qingdao, 266021, China
| |
Collapse
|
5
|
Wang M, Chen H, Chang S. Impact of combined biological hydrolysis and anaerobic digestion temperatures on the characteristics of bacterial community and digestate quality in the treatment of wastewater sludge. BIORESOURCE TECHNOLOGY 2022; 362:127796. [PMID: 35988857 DOI: 10.1016/j.biortech.2022.127796] [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: 07/26/2022] [Revised: 08/12/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
This work investigated the impact of temperature on the digestate water quality and bacterial community in the treatment of wastewater sludge using biological hydrolysis (BH)-anaerobic digestion (AD). The results showed that the BH 55 °C followed by AD 35 °C or 42 °C was the optimal temperature combination in terms of methane yield and digestate water quality. High-throughput sequencing revealed the key differences in bacterial communities for different BH-AD temperature combinations. Microbial source tracking showed only minor microbial migration from raw sludge and BH pre-treated sludge to the AD stage. Strong correlations between the residual sCOD, BH-AD temperature conditions, and dominant bacteria were identified. Clostridiales, Bacteroidales, Cloacimonadales, Thermotogales, and Anaerolineales were closely related to the digestate water quality and methane yield. Overall, the results showed that AD temperature exerted a dominant impact on methane yield, digestate water quality, and bacterial compositions in the BH-AD of wastewater sludge.
Collapse
Affiliation(s)
- Meiying Wang
- School of Engineering, University of Guelph, Ontario N1G 2W1, Canada
| | - Huibin Chen
- School of Engineering, University of Guelph, Ontario N1G 2W1, Canada; College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Sheng Chang
- School of Engineering, University of Guelph, Ontario N1G 2W1, Canada.
| |
Collapse
|
6
|
Santos AMD, Costa JM, Braga JK, Flynn TM, Brucha G, Sancinetti GP, Rodriguez RP. Lactate as an effective electron donor in the sulfate reduction: impacts on the microbial diversity. ENVIRONMENTAL TECHNOLOGY 2022; 43:3149-3160. [PMID: 33840369 DOI: 10.1080/09593330.2021.1916092] [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: 01/14/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
The competition between sulfate-reducing bacteria and methane-producing archaea has a major influence on organic matter removal, as well as the success of sulfidogenic systems. This study investigated the performance of six batch sulfidogenic reactors in response to different COD/sulfate ratios (1.0 and 2.0) and electron donors (cheese whey, ethanol, and sodium lactate) by evaluating the biochemical mechanisms of sulfate reduction, organic matter oxidation, and microbial structure modification. A COD/sulfate ratio of 1.0 resulted in high sulfidogenic activity for all electron donors, thereby achieving a nearly 80% sulfate removal. Lactate provided high sulfate removal rates at COD/sulfate ratios of 1.0 (80%) and 2.0 (90%). A COD/sulfate ratio of 2.0 decreased the sulfate removal rates by 25 and 28% when ethanol and cheese whey were used as substrates. The sulfate-reducing bacteria populations increased using ethanol and lactate at a COD/sulfate ratio of 1.0. Particularly, Desulfovibrio, Clostridium, and Syntrophobacter were predominant. Influent composition and COD/sulfate ratio influenced the relative abundance of the microbial communities. Therefore, controlling these parameters may facilitate the wastewater treatment with high sulfate levels through bacterial activity.
Collapse
Affiliation(s)
- Angélica Marcia Dos Santos
- Fundação Getúlio Vargas (FGV-Energia), Rio de Janeiro, Brazil
- Federal University of Catalão (UFCAT), Catalão, Brazil
- Laboratory of Anaerobic Biotechnology - Science and Technology Institute, Federal University of Alfenas (UNIFAL-MG), Poços de Caldas, Brazil
| | | | - Juliana Kawanishi Braga
- Laboratory of Anaerobic Biotechnology - Science and Technology Institute, Federal University of Alfenas (UNIFAL-MG), Poços de Caldas, Brazil
| | - Theodore M Flynn
- California Department of Water Resources, West Sacramento, CA, USA
| | - Gunther Brucha
- Laboratory of Anaerobic Biotechnology - Science and Technology Institute, Federal University of Alfenas (UNIFAL-MG), Poços de Caldas, Brazil
| | - Giselle Patricia Sancinetti
- Laboratory of Anaerobic Biotechnology - Science and Technology Institute, Federal University of Alfenas (UNIFAL-MG), Poços de Caldas, Brazil
| | - Renata Piacentini Rodriguez
- Laboratory of Anaerobic Biotechnology - Science and Technology Institute, Federal University of Alfenas (UNIFAL-MG), Poços de Caldas, Brazil
| |
Collapse
|
7
|
Yang J, van Lier JB, Li J, Guo J, Fang F. Integrated anaerobic and algal bioreactors: A promising conceptual alternative approach for conventional sewage treatment. BIORESOURCE TECHNOLOGY 2022; 343:126115. [PMID: 34655782 DOI: 10.1016/j.biortech.2021.126115] [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: 08/31/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
Conventional sewage treatment applying activated sludge processes is energy-intensive and requires great financial input, hampering widespread implementation. The introduction of anaerobic membrane bioreactors (AnMBR) followed by an algal reactor growing species of commercial interest, may present an alternative, contributing to the envisaged resource recovery at sewage treatment plants. AnMBRs can be applied for organic matter removal with energy self-sufficiency, provided that effective membrane fouling management is applied. Haematococcus pluvialis, an algal species with commercial value, can be selected for ammonium and phosphate removal. Theoretical analysis showed that good pollutant removal, positive financial output, as well as a significant reduction in the amount of hazardous activated sludge can be achieved by applying the proposed process, showing interesting advantages over current sewage treatment processes. Microbial contamination to H. pluvialis is a challenge, and technologies for preventing the contamination during continuous sewage treatment need to be applied.
Collapse
Affiliation(s)
- Jixiang Yang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401174, China
| | - Jules B van Lier
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Section of Sanitary Engineering, Delft University of Technology, Delft, The Netherlands.
| | - Jian Li
- School of Biological and Chemical Engineering, Panzhihua University, Panzhihua, China
| | - Jinsong Guo
- College of Environment and Ecology, Chongqing University, Chongqing, China
| | - Fang Fang
- College of Environment and Ecology, Chongqing University, Chongqing, China
| |
Collapse
|
8
|
Ni J, Ji J, Li YY, Kubota K. Microbial characteristics in anaerobic membrane bioreactor treating domestic sewage: Effects of HRT and process performance. J Environ Sci (China) 2022; 111:392-399. [PMID: 34949368 DOI: 10.1016/j.jes.2021.04.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 06/14/2023]
Abstract
Two anaerobic membrane bioreactors (AnMBRs) equipped with different membrane pore size (0.4 or 0.05 µm) were operated at 25˚C and fed with domestic wastewater. The hydraulic retention time (HRT) of the reactors was shortened. The microbial communities of the two AnMBRs were investigated by 16S rRNA gene amplicon sequencing to see the effects of HRT. The predominant Archaea was an aceticlastic methanogen Methanosaeta. The composition of hydrogenotrophic methanogens changed with the HRTs: the population of Methanobacterium was higher for longer HRTs, whereas the population of unclassified Methanoregulaceae was higher for shorter HRTs. The Anaerolineae, Bacteroidia and Clostridia bacteria were dominant in both of the reactors, with a combined relative abundance of over 55%. The relative abundance of Anaerolineae was proportional to the biogas production performance. The change in the population of hydrogenotrophic methanogens or Anaerolineae can be used as an indicator for process monitoring. The sum of the relative abundance of Anaerolineae and Clostridia fluctuated slightly with changes in the HRT in both AnMBRs when the reactor was stably operated. The co-occurrence analysis revealed the relative abundance of the operational taxonomic units belonging to Anaerolineae and Clostridia was functionally equivalent during the treatment of real domestic sewage. A principal coordination analysis revealed that the changes in the microbial community in each reactor were consistent with the change of HRT. In addition, both the HRT and the stability of the process are important factors for maintaining microbial community structures.
Collapse
Affiliation(s)
- Jialing Ni
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki, Aoba-ku 980-8579, Sendai, Japan
| | - Jiayuan Ji
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki, Aoba-ku 980-8579, Sendai, Japan
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki, Aoba-ku 980-8579, Sendai, Japan; Department of Frontier Science for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aoba, Aramaki, Aoba-ku 980-8579, Sendai, Japan
| | - Kengo Kubota
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki, Aoba-ku 980-8579, Sendai, Japan.
| |
Collapse
|
9
|
Li H, Li Z, Song B, Gu Z. Microbial community response of the full-scale MBR system for mixed leachates treatment. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 94:e1677. [PMID: 34897880 DOI: 10.1002/wer.1677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/29/2021] [Accepted: 12/04/2021] [Indexed: 06/14/2023]
Abstract
In practice, mature landfill leachate and incineration (young) leachate are mixed to improve the biodegradability and enhance biological treatment performance. However, the ratio of mature-to-young leachates greatly influences MBR treatment efficiency and microbial community structure. This study investigated the treatment efficiency and microbial community structure of full-scale MBR systems operated under two mix ratios, mature leachate: young leachate = 7:3 (v/v, denoted as LL) and 3:7 (v/v, denoted as IL). LL group showed lower Cl- and COD concentrations but a higher aromatic organic content comparing to IL group, and the COD and UV254 removals for LL were significantly lower than those for IL by MBR treatment. Microbial community structures were similar in both groups at phylum level, with dominant phyla being Proteobacteria (23.8%-32.3%), Bacteroidetes (15.25%-20.7%), Chloroflexi (10.5%-23.1%), and Patescibacteria (9.9%-13.2%). However, the richness and diversity of LL group were lower, and differences were observed at lower taxonomy levels. Results indicated that salinity mainly changed the structure of microbial community, resulting in greater abundance of salt-tolerant microbials, while refractory organics affected microbial community structure, and also led to decreased diversity and metabolic activity. Therefore, in mixed leachates biological treatment, a higher young leachate ratio is recommended for better organics removal performance. PRACTITIONER POINTS: The trade-off between refractory organics and salinity in mixed leachate treatment should be paid attention. Refractory organics reduced alpha and functional diversities of microorganisms. Mixed leachate with a higher young leachate ratio reached a better organic removal.
Collapse
Affiliation(s)
- Huan Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Zhiheng Li
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Bowen Song
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| | - Zhepei Gu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
| |
Collapse
|
10
|
Kim GB, Cayetano RDA, Park J, Jo Y, Jeong SY, Lee MY, Kim SH. Effect of low-thermal pretreatment on the methanogenic performance and microbiome population of continuous high-solid anaerobic digester treating dewatered sludge. BIORESOURCE TECHNOLOGY 2021; 341:125756. [PMID: 34419881 DOI: 10.1016/j.biortech.2021.125756] [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: 06/29/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 06/13/2023]
Abstract
Undigested and dewatered sludge at 10% total solids was pretreated at 60 °C for 3 h and fed to a lab-scale horizontal anaerobic bioreactor for 130 days with solids retention time (SRTs) from 25 to 16 d. The low-thermal pretreatment enabled higher net energy production, improved sludge treatment efficiency, and enhanced digestion stability. The highest average biomethane yield and production rate were 138.5 mL/g VS and 0.43 L/L.d, respectively, and the economic benefit was expected to be the maximum at SRT 16 d. Pretreatment did not increase the specific methanogenic activity per unit methanogen, but resulted in higher abundance of methanogenic archaea and hydrolytic bacteria. Methanogenic population shifted from hydrogenotrophic to acetoclastic, consistent with predicted gene expression at SRT equal or below 20 d. Anaerobic digestion along with low-thermal could be a feasible management strategy for undigested dewatered sludge from small WWTPs.
Collapse
Affiliation(s)
- Gi-Beom Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Roent Dune A Cayetano
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jungsu Park
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Yura Jo
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Seong Yeob Jeong
- Environment N Energy O&M Inc, Gyeonggi-do 17970, Republic of Korea
| | - Myung Yeol Lee
- Environment N Energy O&M Inc, Gyeonggi-do 17970, Republic of Korea
| | - Sang-Hyoun Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| |
Collapse
|
11
|
Heronemus E, Gamage KHH, Hettiarachchi GM, Parameswaran P. Efficient recovery of phosphorus and sulfur from Anaerobic Membrane Bioreactor (AnMBR) permeate using chemical addition of iron and evaluation of its nutrient availability for plant uptake. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:146850. [PMID: 33865120 DOI: 10.1016/j.scitotenv.2021.146850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 06/12/2023]
Abstract
Anaerobic membrane bioreactors (AnMBRs) represent an emerging environmental biotechnology platform with the potential to simultaneously recover water, energy, and nutrients from concentrated wastewaters. The removal and beneficial capture of nutrients from AnMBR permeate has yet to be fully explored, therefore this study sought to foster iron phosphate recovery through a tertiary coagulation process, as well as characterize the recovered nutrient product (RNP) and assess its net phosphorus release, diffusion, and availability for plant uptake. One of the primary goals of this study was to optimize the dose of the coagulant, ferric chloride, and coagulant aid, aluminum chlorohydrate (ACH), for continuous application to the coagulation-flocculation-sedimentation (CFS) unit of an AnMBR pilot plant treating municipal wastewater, through controlled bench-scale jar tests. Anaerobic systems present unique challenges for nutrient capture, including high, dissolved hydrogen sulfide concentrations, along with settleability issues. The addition of the coagulant aid increases settleability, while enhancing phosphorus removal by up to 20%, decreasing iron demand. Water quality analysis indicated that a variety of factors affect nutrient capture, including the COD (chemical oxygen demand) concentration of the permeate and the limiting coagulant dose. COD >200 mg/L was shown to decrease the phosphorus removal efficiency by up to 15%. A combination of inductively coupled plasma optical emission spectrometer (ICP-OES) elemental analysis, inductively coupled plasma mass spectrometer (ICP-MS) elemental analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray absorption near-edge structure (XANES) spectroscopy analysis was used to characterize the P-rich RNP which revealed a 2.58% w/w phosphorus content and the lack of a well-defined crystalline structure. Detailed studies on resin extractable phosphorus to assess the plant uptake potential also demonstrated that iron-based P-rich RNPs may not be an effective fertilizer product, as they can act as a phosphorus sink in some agricultural systems instead of a source.
Collapse
Affiliation(s)
- Evan Heronemus
- Department of Civil Engineering, Kansas State University, 2118 Fiedler Hall, 1701C Platt St., Manhattan, KS 66506, USA.
| | - Kasuni H H Gamage
- Department of Agronomy, Kansas State University, 2107 Throckmorton PSC, 1712 Claflin Road, Manhattan, KS 66506, USA
| | - Ganga M Hettiarachchi
- Department of Agronomy, Kansas State University, 2107 Throckmorton PSC, 1712 Claflin Road, Manhattan, KS 66506, USA
| | - Prathap Parameswaran
- Department of Civil Engineering, Kansas State University, 2118 Fiedler Hall, 1701C Platt St., Manhattan, KS 66506, USA
| |
Collapse
|
12
|
Hosseinzadeh A, Zhou JL, Navidpour AH, Altaee A. Progress in osmotic membrane bioreactors research: Contaminant removal, microbial community and bioenergy production in wastewater. BIORESOURCE TECHNOLOGY 2021; 330:124998. [PMID: 33757679 DOI: 10.1016/j.biortech.2021.124998] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/10/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Renewable energy, water conservation, and environmental protection are the most important challenges today. Osmotic membrane bioreactor (OMBR) is an innovative process showing superior performance in bioenergy production, eliminating contaminants, and low fouling tendency. However, salinity build-up is the main drawback of this process. Identifying the microbial community can improve the process in bioenergy production and contaminant treatment. This review aims to study the recent progress and challenges of OMBRs in contaminant removal, microbial communities and bioenergy production. OMBRs are widely reported to remove over 80% of total organic carbon, PO43-, NH4+ and emerging contaminants from wastewater. The most important microbial phyla for both hydrogen and methane production in OMBR are Firmicutes, Proteobacteria and Bacteroidetes. Firmicutes' dominance in anaerobic processes is considerably increased from usually 20% at the beginning to 80% under stable condition. Overall, OMBR process has great potential to be applied for simultaneous bioenergy production and wastewater treatment.
Collapse
Affiliation(s)
- Ahmad Hosseinzadeh
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - John L Zhou
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.
| | - Amir H Navidpour
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Ali Altaee
- Centre for Green Technology, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| |
Collapse
|
13
|
Kong Z, Wu J, Rong C, Wang T, Li L, Luo Z, Ji J, Hanaoka T, Sakemi S, Ito M, Kobayashi S, Kobayashi M, Qin Y, Li YY. Sludge yield and degradation of suspended solids by a large pilot-scale anaerobic membrane bioreactor for the treatment of real municipal wastewater at 25 °C. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143526. [PMID: 33288248 DOI: 10.1016/j.scitotenv.2020.143526] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/29/2020] [Accepted: 10/29/2020] [Indexed: 06/12/2023]
Abstract
Sludge yield and suspended solid are important factors concerned in the anaerobic treatment of municipal wastewater. In this study, a large pilot-scale anaerobic membrane bioreactor (AnMBR) was constructed for effectively treating real municipal wastewater at an ambient temperature of 25 °C. The sludge yield and the degradation of influent suspended solids were evaluated during the long-term operation of the AnMBR. This reactor with 5.0 m3 effective volume is the largest one-stage submerged AnMBR that has ever been used to treat municipal wastewater. During the long-term operation of 217 days, this AnMBR obtained excellent COD and BOD5 removal efficiency over 90%. Stable biogas production was also successfully obtained from treating municipal wastewater. The sludge yield of the AnMBR was approximately 0.19-0.26 g MLSS g-1 COD removed for the treatment of real municipal wastewater. The shortest SRT of the AnMBR was calculated as 29 days for an HRT of 6 h at an empirical MLSS of 10 g L-1. While the influent suspended solid (SS) contained in the municipal wastewater was completely removed by the AnMBR, only 57%-66% of the influent SS was degraded. The rest of influent SS was directly converted to MLSS instead of being degraded. The AnMBR maintained a stable membrane filtration using a hollow-fiber membrane with a total area of 72 m2, realizing a flux of 2.75-17.83 LMH, and the mean transmembrane pressure (TMP) was 0.9-23.5 kPa. An online chemical backwash cleaning system helped to lower the TMP timely using sodium hypochlorite and citric acid when the TMP increased rapidly and reached the rated limit of membrane. This is the first report on demonstrating the successful operation and detailed performance of a large pilot-scale AnMBR applied to the treatment of real municipal wastewater.
Collapse
Affiliation(s)
- Zhe Kong
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Jiang Wu
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan; Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies, Tsukuba, 305-8506, Japan
| | - Chao Rong
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Tianjie Wang
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Lu Li
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Zibin Luo
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Jiayuan Ji
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Taira Hanaoka
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Shinichi Sakemi
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Masami Ito
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Shigeki Kobayashi
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Masumi Kobayashi
- Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome, Shinagawa-Ku, Tokyo 141-0032, Japan
| | - Yu Qin
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Yu-You Li
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan.
| |
Collapse
|
14
|
Kong Z, Wu J, Rong C, Wang T, Li L, Luo Z, Ji J, Hanaoka T, Sakemi S, Ito M, Kobayashi S, Kobayashi M, Qin Y, Li YY. Large pilot-scale submerged anaerobic membrane bioreactor for the treatment of municipal wastewater and biogas production at 25 °C. BIORESOURCE TECHNOLOGY 2021; 319:124123. [PMID: 32971330 DOI: 10.1016/j.biortech.2020.124123] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 05/27/2023]
Abstract
The aim of this work was to demonstrate the operation of a large pilot-scale submerged anaerobic membrane bioreactor (5.0 m3) for biogas production from municipal wastewater at ambient temperature of 25 °C. To the best of our knowledge, this is the largest one-stage submerged AnMBR that has ever been reported. This AnMBR realized a hydraulic retention time (HRT) of 6 h and a treatment capacity of 20 m3 d-1, obtaining excellent effluent quality with COD removal efficiency over 90% and BOD5 removal over 95%. The biogas yield of the AnMBR was 0.25-0.27 L g-1 removed COD and 0.09-0.10 L L-1 raw wastewater. The methane content of the biogas was at the range of 75%-81%. The COD and nitrogen mass balance were also identified based on long-term operation. The hollow-fiber membrane module realized a flux of 2.75-17.83 LMH. An online backwash chemical cleaning system helped to lower the transmembrane pressure timely.
Collapse
Affiliation(s)
- Zhe Kong
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Jiang Wu
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan; Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies, Tsukuba, 305-8506, Japan
| | - Chao Rong
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Tianjie Wang
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Lu Li
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Zibin Luo
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Jiayuan Ji
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Taira Hanaoka
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Shinichi Sakemi
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Masami Ito
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Shigeki Kobayashi
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Masumi Kobayashi
- Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome, Shinagawa-Ku, Tokyo 141-0032, Japan
| | - Yu Qin
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Yu-You Li
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan.
| |
Collapse
|