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Li Y, Qiao W, Zhao G, Wu Z, Jiang P, Dong R. Pilot-scale study of enhanced thermophilic anaerobic digestion of food waste with the addition of trace elements. BIORESOURCE TECHNOLOGY 2024; 413:131454. [PMID: 39255946 DOI: 10.1016/j.biortech.2024.131454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Revised: 09/05/2024] [Accepted: 09/05/2024] [Indexed: 09/12/2024]
Abstract
Thermophilic anaerobic digestion (AD) offers many benefits for food waste treatment but is seldom adopted in industrial plants due to instability issue, particularly under higher loading conditions. This study thus conducted a 160-day continuous operation of a pilot-scale thermophilic AD system on-site. Results from the experiments showed that the system could operate under relatively lower loading but failed when the loading reached up to 5.69 kg·COD/(m3·d). Volatile fatty acids increased to 6000 mg/L at the corresponding hydraulic retention time of 15 days. Trace elements were then introduced, which restored higher process stability by reducing volatile fatty acids to 400 mg/L. The mass balance and materials decomposition resutls revealed the system's strong resilience. Methanoculleus (92.52 %) and Methanomassiliicoccus (6.55 %) were the dominant methanogens, a phenomenon rarely observed in similar thermophilic systems. This system may tolerate more stressful conditions, as the loading limits had not been reached with the addition of trace elements.
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Affiliation(s)
- Yang Li
- College of Engineering, China Agricultural University, Beijing 100083, China; Sanya Institute of China Agricultural University, Sanya, Hainan Province 572025, China.
| | - Wei Qiao
- College of Engineering, China Agricultural University, Beijing 100083, China; Sanya Institute of China Agricultural University, Sanya, Hainan Province 572025, China.
| | - Guoli Zhao
- Hainan Tropical Ocean University, Sanya, Hainan Province 572022, China.
| | - Zhiyue Wu
- College of Engineering, China Agricultural University, Beijing 100083, China.
| | - Pengwu Jiang
- College of Engineering, China Agricultural University, Beijing 100083, China; Sanya Institute of China Agricultural University, Sanya, Hainan Province 572025, China.
| | - Renjie Dong
- College of Engineering, China Agricultural University, Beijing 100083, China.
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2
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Zhang Y, Xiang Y, Xu R, Huang J, Deng J, Zhang X, Wu Z, Huang Z, Yang Z, Xu J, Xiong W, Li H. Magnetic biochar promotes the risk of mobile genetic elements propagation in sludge anaerobic digestion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 335:117492. [PMID: 36863149 DOI: 10.1016/j.jenvman.2023.117492] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/05/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Mobile genetic elements (MGEs) mediated horizontal gene transfer is the primary reason for the propagation of antibiotic resistance genes in environment. The behavior of MGEs under magnetic biochar pressure in sludge anaerobic digestion (AD) is still unknown. This study evaluated the effects of different dosage magnetic biochar on the MGEs in AD reactors. The results showed that the biogas yield was highest (106.68 ± 1.16 mL g-1 VSadded) with adding optimal dosage of magnetic biochar (25 mg g-1 TSadded), due to it increased the microorganism's abundance involved in hydrolysis and methanogenesis. While, the total absolute abundance of MGEs in the reactors with magnetic biochar addition increased by 11.58%-77.37% compared with the blank reactor. When the dosage of magnetic biochar was 12.5 mg g-1 TSadded, the relative abundance of most MGEs was the highest. The enrichment effect on ISCR1 was the most significant, and the enrichment rate reached 158.90-214.16%. Only the intI1 abundance was reduced and the removal rates yield 14.38-40.00%, which was inversely proportional to the dosage of magnetic biochar. Co-occurrence network explored that Proteobacteria (35.64%), Firmicutes (19.80%) and Actinobacteriota (15.84%) were the main potential host of MGEs. Magnetic biochar changed MGEs abundance by affecting the potential MGEs-host community structure and abundance. Redundancy analysis and variation partitioning analysis showed that the combined effect of polysaccharides, protein and sCOD exhibited the greatest contribution (accounted for 34.08%) on MGEs variation. These findings demonstrated that magnetic biochar increases the risk of MGEs proliferation in AD system.
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Affiliation(s)
- Yanru Zhang
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China; School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
| | - Yinping Xiang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
| | - Rui Xu
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Jing Huang
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China
| | - Jiaqin Deng
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China
| | - Xuan Zhang
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China
| | - Zijian Wu
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China
| | - Zhongliang Huang
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China
| | - Zhaohui Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
| | - Jingliang Xu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Wenlong Xiong
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China; School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China.
| | - Hui Li
- Hunan Academy of Forestry and State Key Laboratory of Utilization of Woody Oil Resource, Changsha, 410004, China.
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Gao M, Song J, Wang Y, Zhang S, Sheng C, Shang Z, Yang G, Wang X, Feng Y. Dynamic interaction mechanism of environment, microorganisms, and functions in anaerobic digestion of food waste with magnetic powder supplement. BIORESOURCE TECHNOLOGY 2021; 340:125656. [PMID: 34332439 DOI: 10.1016/j.biortech.2021.125656] [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: 06/21/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
The reutilisation of food waste for the production of clean energy was promoted by supplementing magnet powder in anaerobic digestion (AD). This study found that adding 5% magnet powder optimally increased the amount of biogas produced by 61.9%, and the pH and volatile fatty acids (VFA) content had the greatest correlation with biogas production. A further metagenomics analysis in the early, middle, and late stages of the AD revealed that interaction between bacteria and archaea had highest explanation rate for pH and VFA changes rather than enzymes. Moreover, the 5% magnet powder increased the proportion of the CO2 methanogenesis and decreased the acetate methanogenesis on day 15 of peak biogas production. And it was an innovative discovery that conversion of tetrahydromethanopterin S-methyltransferase to methane increased, which is an important common node of methanogenesis metabolic and may be the fundamental reason for the increase in biogas production caused by magnetic powder.
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Affiliation(s)
- Mingxue Gao
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Jinghui Song
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Ying Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Siqi Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Chenjing Sheng
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Zezhou Shang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Gaihe Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Xiaojiao Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Yongzhong Feng
- College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China.
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Liu H, Ye X, Chen S, Sun A, Duan X, Zhang Y, Zou H, Zhang Y. Chitosan as additive affects the bacterial community, accelerates the removals of antibiotics and related resistance genes during chicken manure composting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148381. [PMID: 34146805 DOI: 10.1016/j.scitotenv.2021.148381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 06/12/2023]
Abstract
Manures, storages for antibiotic resistance genes (ARGs), pollute soil and water as well as endanger human health. Recently, we have been searching a better solution to remove antibiotics and ARGs during aerobic composting. Here, the dynamics of chitosan addition on the profiles of 71 ARGs, bacterial communities, chlortetracycline (CTC), ofloxacin (OFX) were investigated in chicken manure composting and compared with zeolite addition. Chitosan addition effectively reduces antibiotics contents (CTC under detection limit, OFX 90.96%), amounts (18) and abundance (56.7%, 11.1% higher than zeolite addition) of ARGs and mobile genetic elements (MGEs) after 42 days composting. Network analysis indicated that a total of 27 genera strains assigned into 4 phyla (Firmicutes, Proteobacteria, Actinobacteria and Bacteroidetes) were the potential hosts of ARGs. Redundancy analysis (RDA) demonstrated that bacterial community succession is the main contributor in the variation of ARGs. Overall, chitosan addition may effect bacterial composition by influencing physic-chemical properties and the concentration of antibiotics, Cu2+, Zn2+ to reduce the risk of ARG transmission. This study gives a new strategy about antibiotics and ARGs removal from composting on the basis of previous studies.
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Affiliation(s)
- Hongdou Liu
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China
| | - Xuhong Ye
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China
| | - Songling Chen
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China
| | - Aobo Sun
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China
| | - Xinying Duan
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China
| | - Yanqing Zhang
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China; Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences, China
| | - Hongtao Zou
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China.
| | - Yulong Zhang
- College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, Liaoning, China; National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Shenyang 110866, Liaoning, China; Key Laboratory of Arable Land Conservation (Northeast China), Ministry of Agriculture and Rural Areas, Shenyang 110866, Liaoning, China
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Liu Y, Lin C, Jia H, Yong X, Xie X, Wu X, Zhou J, Wei P. Effects of amino-modified biofilm carriers on biogas production in the anaerobic digestion of corn straw. ENVIRONMENTAL TECHNOLOGY 2020; 41:2806-2816. [PMID: 30767709 DOI: 10.1080/09593330.2019.1583290] [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: 11/12/2018] [Accepted: 02/10/2019] [Indexed: 06/09/2023]
Abstract
This paper studied the property of three different biofilm carriers added into the anaerobic digestion systems, a granular activated carbon, a polyacrylonitrile, and a polyacrylonitrile modified with diethylenetriamine (PAN-NH2). The PAN-NH2 system kept the maximum biogas and methane production, which were 42.69% and 37.29% higher than the control system, respectively. The value of pH and chemical oxygen demand, the content of total solid and volatile solid, volatile fatty acids concentration, coenzyme F420 concentration, and microbial community analysis were investigated during the anaerobic digestion process. The PAN-NH2 system had the highest removal efficiency of the pollutants and regulated the pH of the system better than other systems. The result of high-throughput sequencing analysis showed that the addition of biofilm carriers and mediation with amino-groups adjusted system pH and improved biogas and CH4 production by reducing the relative abundance of bacteria in the hydrolysis/acidogenesis stages. Methanosarcina gradually replaced other methanogens during the experimental runs and was the dominant methanogen at the end of the anaerobic digestion process.
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Affiliation(s)
- Yongdi Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
- Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Chaoba Lin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
- Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Honghua Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Xiaoyu Yong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
- Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Xinxin Xie
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
- Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Xiayuan Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
- Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Jun Zhou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
- Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
| | - Ping Wei
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu, People's Republic of China
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6
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Lv Z, Wang J, Chen Z, Chen X, Zhang L, Li C, Chen Z, Zhang J, Wu X, Jia H. Temperature regulations impose positive influence on the biomethane potential versus digesting modes treating agricultural residues. BIORESOURCE TECHNOLOGY 2020; 301:122747. [PMID: 31935643 DOI: 10.1016/j.biortech.2020.122747] [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: 11/12/2019] [Revised: 01/03/2020] [Accepted: 01/04/2020] [Indexed: 06/10/2023]
Abstract
Temperature regulations (mesophilic/thermophilic) and digesting modes (mono-/co-digestion) play key roles in the biomethane potential of anaerobic digestion, but limited research focus on the synergetic effects on microbial interconnections of the biomethane process. In this study, the pineapple and maize residues under different operations were monitored by batch biogas assays and 16S high-throughput sequencing to explore: 1) biomethane potential regarding different operations, 2) microbial communities in different treated reactors, and 3) significant factors determine microbial distribution. Results showed that the co-digestion had higher methanogenic abundance and biomethane production (~3300 mLn) versus mono-digestion under mesophilic condition. To the thermophilic condition, the co-digestion had less methanogenic abundance but more biomethane production (~5000 mLn). Statistical evidence uncovered that the Clostridiaceae and Thermoanaerobacteraceae dominated pathways linked closely with methanogenesis which may contribute the more biomethane production in the thermophilic condition. This study demonstrated the temperature regulations drove rare taxa as major contributors for biomethane production.
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Affiliation(s)
- Zuopeng Lv
- The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province, School of Life, Jiangsu Normal University, Xuzhou 221116, China
| | - Junyu Wang
- The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province, School of Life, Jiangsu Normal University, Xuzhou 221116, China
| | - Zixuan Chen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xueru Chen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Lina Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chunrui Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhongbing Chen
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic
| | - Jianfeng Zhang
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiayuan Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.
| | - Honghua Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
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Oliver JP, Gooch CA, Lansing S, Schueler J, Hurst JJ, Sassoubre L, Crossette EM, Aga DS. Invited review: Fate of antibiotic residues, antibiotic-resistant bacteria, and antibiotic resistance genes in US dairy manure management systems. J Dairy Sci 2020; 103:1051-1071. [DOI: 10.3168/jds.2019-16778] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 08/24/2019] [Indexed: 01/03/2023]
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Li J, Wang HZ, Yi Y, Gou M, Nobu MK, Chen YT, Tang YQ. Response of Isovalerate-Degrading Methanogenic Microbial Community to Inhibitors. Appl Biochem Biotechnol 2020; 191:1010-1026. [PMID: 31950447 DOI: 10.1007/s12010-020-03234-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/08/2020] [Indexed: 10/25/2022]
Abstract
Isovalerate is one of the key intermediates during anaerobic digestion treating protein-containing waste/wastewater. Investigating the effect of different kinds of inhibitors on isovalerate-degrading microbial community is necessary to develop measures for improving the effectiveness of the treatment plants. In the present study, dynamic changes in the isovalerate-degrading microbial community in presence of inhibitors (ammonium, sulfide, mixed ammonium and sulfide, and chlortetracycline (CTC)) were investigated using high-throughput sequencing of 16S rRNA gene. Our observations showed that the isovalerate-degrading microbial community responded differently to different inhibitors and that the isovalerate degradation and gas production were strongly repressed by each inhibitor. We found that sulfide inhibited both isovalerate oxidation followed by methanogenesis, while ammonium, mixed ammonium and sulfide, and CTC mainly inhibited isovalerate oxidation. Genera classified into Proteobacteria and Chloroflexi were less sensitive to inhibitors. The two dominant genera, which are potential syntrophic isovalerate oxidizers, exhibited different responses to inhibitors that the unclassified_Peptococcaceae_3 was more sensitive to inhibitors than the unclassified_Syntrophaceae. Upon comparison to acetoclastic methanogen Methanosaeta, hydrogenotrophic methanogens Methanoculleus and Methanobacterium were less sensitive to inhibitors.
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Affiliation(s)
- Jie Li
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu, 610065, Sichuan, China
| | - Hui-Zhong Wang
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu, 610065, Sichuan, China
| | - Yue Yi
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu, 610065, Sichuan, China
| | - Min Gou
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu, 610065, Sichuan, China
| | - Masaru Konishi Nobu
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, Higashi 1-1-1, Tsukuba, Ibaraki, 305-8566, Japan
| | - Ya-Ting Chen
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu, 610065, Sichuan, China.
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, No. 24, South Section 1, First Ring Road, Chengdu, 610065, Sichuan, China.
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Free A, McDonald MA, Pagaling E. Diversity-Function Relationships in Natural, Applied, and Engineered Microbial Ecosystems. ADVANCES IN APPLIED MICROBIOLOGY 2018; 105:131-189. [PMID: 30342721 DOI: 10.1016/bs.aambs.2018.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The connection between ecosystem function and taxonomic diversity has been of interest and relevance to macroecologists for decades. After many years of lagging behind due to the difficulty of assigning both taxonomy and function to poorly distinguishable microscopic cells, microbial ecology now has access to a suite of powerful molecular tools which allow its practitioners to generate data relating to diversity and function of a microbial community on an unprecedented scale. Instead, the problem facing today's microbial ecologists is coupling the ease of generation of these datasets with the formulation and testing of workable hypotheses relating the diversity and function of environmental, host-associated, and engineered microbial communities. Here, we review the current state of knowledge regarding the links between taxonomic alpha- and beta-diversity and ecosystem function, comparing our knowledge in this area to that obtained by macroecologists who use more traditional techniques. We consider the methodologies that can be applied to study these properties and how successful they are at linking function to diversity, using examples from the study of model microbial ecosystems, methanogenic bioreactors (anaerobic digesters), and host-associated microbiota. Finally, we assess ways in which our newly acquired understanding might be used to manipulate diversity in ecosystems of interest in order to improve function for the benefit of us or the environment in general through the provision of ecosystem services.
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Affiliation(s)
- Andrew Free
- School of Biological Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Michael A McDonald
- School of Biological Sciences, The University of Edinburgh, Edinburgh, United Kingdom
| | - Eulyn Pagaling
- The James Hutton Institute, Craigiebuckler, Aberdeen, United Kingdom
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Xu R, Zhang K, Liu P, Khan A, Xiong J, Tian F, Li X. A critical review on the interaction of substrate nutrient balance and microbial community structure and function in anaerobic co-digestion. BIORESOURCE TECHNOLOGY 2018; 247:1119-1127. [PMID: 28958888 DOI: 10.1016/j.biortech.2017.09.095] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/13/2017] [Accepted: 09/15/2017] [Indexed: 06/07/2023]
Abstract
Anaerobic co-digestion generally results in a higher yield of biogas than mono-digestion, hence co-digestion has become a topic of general interest in recent studies of anaerobic digestion. Compared with mono-digestion, co-digestion utilizes multiple substrates. The balance of substrate nutrient in co-digestion comprises better adjustments of C/N ratio, pH, moisture, trace elements, and dilution of toxic substances. All of these changes could result in positive shifts in microbial community structure and function in the digestion processes and consequent augmentation of biogas production. Nevertheless, there have been few reviews on the interaction of nutrient and microbial community in co-digestions. The objective of this review is to investigate recent achievements and perspectives on the interaction of substrate nutrient balance and microbial community structure and function. This may provide valuable information on the optimization of combinations of substrates and prediction of bioreactor performance.
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Affiliation(s)
- Rong Xu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Tianshui South Road #222, Lanzhou, Gansu 730000, People's Republic of China
| | - Kai Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Tianshui South Road #222, Lanzhou, Gansu 730000, People's Republic of China
| | - Pu Liu
- Department of Development Biology Sciences, School of Life Science, Lanzhou University, Tianshui South Road #222, Lanzhou, Gansu 730000, People's Republic of China
| | - Aman Khan
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Tianshui South Road #222, Lanzhou, Gansu 730000, People's Republic of China
| | - Jian Xiong
- Wuhan Optics Valley Bluefire New Energy Co., Ltd, Fozulingsanlu Wuhan East Lake Development Zone #29, Wuhan, Hubei 430205, People's Republic of China
| | - Fake Tian
- Wuhan Optics Valley Bluefire New Energy Co., Ltd, Fozulingsanlu Wuhan East Lake Development Zone #29, Wuhan, Hubei 430205, People's Republic of China
| | - Xiangkai Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Tianshui South Road #222, Lanzhou, Gansu 730000, People's Republic of China.
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Zhou J, Yang J, Yu Q, Yong X, Xie X, Zhang L, Wei P, Jia H. Different organic loading rates on the biogas production during the anaerobic digestion of rice straw: A pilot study. BIORESOURCE TECHNOLOGY 2017; 244:865-871. [PMID: 28847074 DOI: 10.1016/j.biortech.2017.07.146] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/23/2017] [Accepted: 07/24/2017] [Indexed: 05/16/2023]
Abstract
The aim of this work was to investigate the mesophilic methane fermentation of rice straw at different organic loading rates (OLRs) in a 300m3 bioreactor. It was found that biogas production increased when the OLR was below 2.00kg VSsubstrate/(m3·d). The average volumetric biogas production reached 0.86m3/(m3·d) at an OLR of 2.00kg VSsubstrate/(m3·d). Biogas production rate was 323m3/t dry rice straw over the whole process. The pH, chemical oxygen demand, volatile fatty acid, and NH4+-N concentrations were all in optimal range at different OLRs. High-throughput sequencing analysis indicated that Firmicutes, Fibrobacteres, and Spirochaetes predominated in straw samples. Chloroflexi, Proteobacteria, and Planctomycetes were more abundant in the slurry. The hydrogenotrophic pathway was the main biochemical pathway of methanogenesis in the reactor. This study provides new information regarding the OLR and the differences in the spatial distribution of specific microbiota in a rice straw biogas plant.
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Affiliation(s)
- Jun Zhou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Jun Yang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Qing Yu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xiaoyu Yong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Xinxin Xie
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Lijuan Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Ping Wei
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Honghua Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China; Bioenergy Research Institute, Nanjing Tech University, Nanjing, Jiangsu 211816, China.
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