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Wang XW, Tan X, Dang CC, Lu Y, Xie GJ, Liu BF. Thermophilic microorganisms involved in the nitrogen cycle in thermal environments: Advances and prospects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165259. [PMID: 37400035 DOI: 10.1016/j.scitotenv.2023.165259] [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: 12/04/2022] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/05/2023]
Abstract
Thermophilic microorganisms mediated significant element cycles and material conversion in the early Earth as well as mediating current thermal environments. Over the past few years, versatile microbial communities that drive the nitrogen cycle have been identified in thermal environments. Understanding the microbial-mediated nitrogen cycling processes in these thermal environments has important implications for the cultivation and application of thermal environment microorganisms as well as for exploring the global nitrogen cycle. This work provides a comprehensive review of different thermophilic nitrogen-cycling microorganisms and processes, which are described in detail according to several categories, including nitrogen fixation, nitrification, denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium. In particular, we assess the environmental significance and potential applications of thermophilic nitrogen-cycling microorganisms, and highlight knowledge gaps and future research opportunities.
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Affiliation(s)
- Xiao-Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xin Tan
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Cheng-Cheng Dang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yang Lu
- The Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Guo-Jun Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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Kennedy N, Lally RD, Walsh SW, Dowling DN, Ryan D. Effect of green waste and lime amendments on biostabilisation, physical-chemical and microbial properties of the composted fine fraction of residual municipal solid waste. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2021; 39:1069-1077. [PMID: 33666127 DOI: 10.1177/0734242x21996823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Implementation of guidelines to reduce the amount of biodegradable municipal waste (BMW) sent to landfill has created a need in the waste-management industry to investigate possible methods of accelerating biostabilisation of residual BMW. The effect of commercially feasible manipulations (lime and green waste (GW)) on the rate of biostabilisation of the fine (<20 mm) fraction of residual BMW was investigated. The physical and chemical attributes of the composted wastes were measured, and their bacterial communities profiled using traditional culture-based methods. In addition, ammonia-oxidising microbes were monitored during the biostabilisation process using molecular profiling methods. Addition of GW accelerated biostabilisation, reduced conductivity and increased the levels of ammonia-oxidising bacterial (AOB) and archaeal (AOA) genes. The best stability was noted in the dual (Lime + GW) treatment, which was under the limit of 13 mmol O2 kg DM-1 h-1 recommended by the Irish compost standard. Biostabilised wastes met recommendations for source-segregated compost for pH (6-8) and pathogens (E. coli and Salmonella), but not heavy metals, indicating their unsuitability for uses other than landfill cover. Levels of AOA genes (log 3-6 g-1 DM) were higher than AOB (log 1-6 g-1 DM, indicating AOA may contribute more to potential ammonia oxidation in residual BMW composting.
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Affiliation(s)
- Nabla Kennedy
- Department of Science and Health, Institute of Technology Carlow, Ireland
| | - Richard D Lally
- Department of Science and Health, Institute of Technology Carlow, Ireland
- Alltech Bioscience, Dunboyne, Co. Meath, Ireland
| | - Siobhán W Walsh
- Department of Science, Eco-Innovation Research Centre, Waterford Institute of Technology, Ireland
| | - David N Dowling
- Department of Science and Health, Institute of Technology Carlow, Ireland
| | - David Ryan
- Department of Science and Health, Institute of Technology Carlow, Ireland
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He X, Ji G. Responses of AOA and AOB activity and DNA/cDNA community structure to allylthiourea exposure in the water level fluctuation zone soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:15233-15244. [PMID: 32072408 DOI: 10.1007/s11356-020-07952-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 01/30/2020] [Indexed: 06/10/2023]
Abstract
Ammonia oxidation is mainly performed by ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB). Allylthiourea (ATU) has been found to specifically inhibit ammonia oxidation. However, the effect of ATU on AOA and AOB transcription has been infrequently studied. In the present study, we examined the responses of AOA and AOB activity and DNA/cDNA community structure to ATU exposure. The ammonia oxidation activity in the 100-mg/L ATU group was 4.3% of that in the control group after 7 days. When exposed to ATU, the gene abundance of AOA was favored compared with that of AOB, and there were no statistically significant differences in the abundance of AOB amoA in DNA and cDNA between the two groups. Compared with the control group, the gene abundance of AOA significantly increased by 5.23 times, while the transcription of AOA significantly decreased by 0.70 times. Moreover, the transcriptional ratio of AOA in the ATU group was only 0.05 times as high as that in the control group. ATU selectively affected AOB and completely inhibited Nitrosomonas europaea and Bacterium amoA.22.HaldeII.kultur at the genetic level. Under ATU exposure, all AOA clusters were transcribed, but three AOB clusters were not transcribed. Our results indicated that the ammonia oxidation potential of the soil of water level fluctuation areas, based on ATU inhibition, was associated mainly with AOA amoA gene abundance and AOB community shifts in DNA and cDNA.
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Affiliation(s)
- Xiangjun He
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing, 100871, China
| | - Guodong Ji
- Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing, 100871, China.
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Meng Q, Han Y, Zhu H, Yang W, Bello A, Deng L, Jiang X, Wu X, Sheng S, Xu Y, Xu X. Differences in distribution of functional microorganism at DNA and cDNA levels in cow manure composting. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 191:110161. [PMID: 31954219 DOI: 10.1016/j.ecoenv.2019.110161] [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: 11/25/2019] [Accepted: 12/31/2019] [Indexed: 06/10/2023]
Abstract
Denitrification and nitrification processes are the two prominent pathways of nitrogen (N) transformation in composting matrix. This study explored the dynamics of denitrifying and nitrifying bacteria at different composting stages of cow manure and corn straw using functional gene sequencing at DNA and cDNA levels. Corresponding agreement among OTUs, NMDS, mental test and network analyses revealed that functional bacteria community compositions and responses to physicochemical factors were different at DNA and cDNA levels. Specifically, some OTUs were detected at the DNA level but were not observed at cDNA level, differences were also found in the distribution patterns of nitrifying and denitrifying bacteria communities at both levels. Furthermore, co-occurrence network analysis indicated that Pseudomonas, Paracoccus and Nitrosomonas were identified as the keystone OTUs at the DNA level, while Paracoccus, Agrobacterium and Nitrosospira were keystone OTUs at the cDNA level. Mantel test revealed that TN, C/N and moisture content significantly influenced both the denitrifying bacteria and ammonia-oxidizing bacteria (AOB) communities at the DNA level. NO3--N, NH4+-N, TN, C/N, and moisture content only registered significant correlation with the nosZ-type denitrifiers and ammonia-oxidizing bacteria (AOB) communities at the cDNA level. Structural equation model (SEM) showed that TN, NH4+-N, and pH were direct and significantly influenced the gene abundance of denitrifying bacteria. Howbeit, TN, NH4+-N, and NO3--N had significant direct effects on amoA gene abundance.
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Affiliation(s)
- Qingxin Meng
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Yue Han
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Haifeng Zhu
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Wei Yang
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ayodeji Bello
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Liting Deng
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Xin Jiang
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Xiaotong Wu
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Siyuan Sheng
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Yingying Xu
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161006, China
| | - Xiuhong Xu
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
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Zhao MM, Chen YP, Xue LG, Fan TT. Three kinds of ammonia oxidizing microorganisms play an important role in ammonia nitrogen self-purification in the Yellow River. CHEMOSPHERE 2020; 243:125405. [PMID: 31995872 DOI: 10.1016/j.chemosphere.2019.125405] [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: 04/09/2019] [Revised: 10/29/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
To develop the microbial resources of the Yellow River, seven water samples were collected along the Lanzhou region of the river from upstream to downstream for testing. Analysis of various physico-chemical indexes was conducted, and key parameters influencing the water quality were selected through principal component analysis, after which the decisive factors impacting water quality were determined by correlation and regression analysis. The results indicated that (1) DO, NH3-N, NO2--N, TN, TC, As, Cr6+ and Pb were the main physico-chemical factors influencing water quality in the Lanzhou region, with NH3-N having the greatest effect. (2) Ammonia-oxidizing microorganisms [ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and anaerobic ammonia-oxidizing bacteria (AMX)] were found to mediate the transformation of NH3-N in the studied section. AOA was the primary microbe community among the two aerobic ammonia-oxidizing microorganisms (AOA and AOB) in the Yellow River. (3) Phylogenetic analysis showed that there were some known groups, and there were still many unknown species in the water of the studied section, especially within the AMX population. (4) Correlation analysis revealed that AOA has strong adaptability to unhealthy environments, and that some environmental factors (higher concentrations of carbon, nitrogen and some heavy metals) could increase the AOA gene abundance. Overall, these results suggested there are rich ammonia-oxidizing microbial resources, especially AOA, in the Lanzhou section of the Yellow River, which have the potential for application in nitrogen sewage treatment.
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Affiliation(s)
- Meng M Zhao
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Yi-Ping Chen
- SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China.
| | - Lin-Gui Xue
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Tao T Fan
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
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Abstract
The composting of sewage sludge and maize straw mixtures was investigated in this study. The aim was to analyze the influence of different proportions of sewage sludge and maize straw in the mixtures on composting process dynamics (expressed by heat production) and gas emissions. The results showed that all examined mixtures reached a strong thermophilic phase of composting; however, the lowest dynamic of temperature growth was observed in the case of the biggest sewage sludge content (60% of sewage sludge in the composting mixture). The ammonia concentration inside bioreactor chambers was directly related to the content of sewage sludge in the composted mixture. Excessive contents of sewage sludge had a considerable effect on very low C/N ratios and high losses through ammonia emissions. Tests were carried out in reactors with a capacity of 160 dm3 under controlled conditions. All mixtures were aerated by the average air-flow of about 2.5 dm3∙min−1, i.e., the minimum air-flow that allows a temperature of about 70 °C to be reached and a sufficiently long thermophilic phase, which ensures proper composting.
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Tu R, Jin W, Han SF, Zhou X, Wang T, Gao SH, Wang Q, Chen C, Xie GJ, Wang Q. Rapid enrichment and ammonia oxidation performance of ammonia-oxidizing archaea from an urban polluted river of China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113258. [PMID: 31669955 DOI: 10.1016/j.envpol.2019.113258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 09/07/2019] [Accepted: 09/14/2019] [Indexed: 06/10/2023]
Abstract
Ammonia oxidation is the rate-limiting step in nitrification process and dominated by ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA). In the present study, a highly enriched culture of AOA was obtained from urban polluted water in Shahe River, Shenzhen, China. The optimum growth conditions were identified by orthogonal analysis as 37 °C, with pH 7.0 and initial ammonia concentration of 1.0 mM. Under these conditions, the highest abundance of AOA was obtained as 4.6 × 107 copies/ng DNA. Growth of AOA in polluted river water showed significant reduction in ammonia concentration in AOA-enriched cultures without antibiotics after 10 days of incubation, while synchronous increase in nitrate concentration was up to 12.7 mg/L. However, AOA-enriched by antibiotic showed insignificant changes in ammonia or nitrite concentration. This study showed that AOB play an important role in ammonia oxidation of polluted river water, and AOA alone showed insignificant changes in ammonia or nitrite concentrations. Therefore, the ammonia oxidation performance of natural water could not be improved by adding high concentration AOA bacterial liquid.
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Affiliation(s)
- Renjie Tu
- Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Wenbiao Jin
- Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Song-Fang Han
- Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Xu Zhou
- Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China.
| | - Tianqiang Wang
- Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Shu-Hong Gao
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK 73019, USA
| | - Qing Wang
- Shenzhen Engineering Laboratory of Microalgal Bioenergy, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
| | - Chuan Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 150001, Harbin, China
| | - Guo-Jun Xie
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 150001, Harbin, China
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
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Fang Y, Jia X, Chen L, Lin C, Zhang H, Chen J. Effect of thermotolerant bacterial inoculation on the microbial community during sludge composting. Can J Microbiol 2019; 65:750-761. [DOI: 10.1139/cjm-2019-0107] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A thermophilic bacterium (Geobacillus stearothermophilus CHB1) was inoculated in a sludge compost, and the effects of the inoculation on the abundance and structure of the bacterial community in the sludge compost were investigated using quantitative PCR and Illumina MiSeq sequencing. The results showed that the high-temperature stage (>50 °C) of the CHB1 and CK (control without inoculum) piles started on days 5 and 8, respectively, and lasted for 7 and 2 days, respectively, indicating the extension of the thermophilic phase by CHB1 inoculation in the sludge compost. At the end of composting, the CHB1 piles showed a higher loss of total organic carbon, lower C/N ratio, and lower moisture content. The abundance of bacteria in the CHB1 piles was significantly higher in the heating and thermophilic phase of composting but were lower than those of the CK in the cooling phase. The richness and diversity of the bacterial community in the thermophilic phase increased after inoculation with CHB1. After inoculation of CHB1, there were higher relative abundances of Firmicutes, Thermopolyspora, Thermobacillus, Thermomonas, Thermomonospora, and Thermovum, which can grow in a high-temperature environment. Furthermore, redundancy analysis indicated that total organic carbon, total nitrogen, C/N ratio, pH, temperature, and moisture were the significant parameters that affected the bacterial community structure during sludge composting. Our findings suggested that inoculation with CHB1 would enhance the quality and efficiency of composting.
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Affiliation(s)
- Yu Fang
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
| | - Xianbo Jia
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
| | - Longjun Chen
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
| | - Chenqiang Lin
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
| | - Hui Zhang
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
| | - Jichen Chen
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
- Institute of Soil and Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
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Xia H, Wu Y, Chen X, Huang K, Chen J. Effects of antibiotic residuals in dewatered sludge on the behavior of ammonia oxidizers during vermicomposting maturation process. CHEMOSPHERE 2019; 218:810-817. [PMID: 30508799 DOI: 10.1016/j.chemosphere.2018.11.167] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/15/2018] [Accepted: 11/25/2018] [Indexed: 06/09/2023]
Abstract
Antibiotics existed in dewatered sludge may affect the organic decomposition and nitrification efficiency of vermicomposting process, and thus lowering the agricultural value of sludge vermicompost. However, few studies have focused on the effects of antibiotics during vermicomposting process of sludge, notably for the maturated phage. Hence, this study aimed to investigate the effects of antibiotics on the nitrification rate and the features of ammonia oxidizing archaea (AOA) and bacteria (AOB) during vermicomposting maturated phage of sludge. The treatments including the additions of tetracycline and ofloxacin with high and low concentrations were compared with the control without adding antibiotics. The results showed the antibiotics enhanced the nitrification rate of 15.8%-42% in vermicomposting maturated phage compared with the counterpart, with a better stimulating effect in the low concentration of tetracycline. The population of amoA genes increased in antibiotic treatments with low concentrations but decreased in these with high concentrations. In addition, high through-put sequencing results revealed that the tetracycline had a stronger influence on the α and β diversities of AOA and AOB, relative to the ofloxacin. In contrast to the AOB, the AOA played a more important role in ammonia oxidization, in the presence of antibiotics. This study suggests that the antibiotics of dewatered sludge can strongly affect the ammonia oxidization process through modifying the numbers and community structures of AOA and AOB during vermicomposting and these effects are associated with the types and concentrations of antibiotics.
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Affiliation(s)
- Hui Xia
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Anning West Road No. 88, Lanzhou, 730070, China.
| | - Ying Wu
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Anning West Road No. 88, Lanzhou, 730070, China
| | - Xuemin Chen
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Anning West Road No. 88, Lanzhou, 730070, China.
| | - Kui Huang
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Anning West Road No. 88, Lanzhou, 730070, China.
| | - Jingyang Chen
- School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Anning West Road No. 88, Lanzhou, 730070, China
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Pérez Gimeno A, Navarro Pedreño J, Almendro Candel MB, Gómez Lucas I, Zorpas AA. Oxygen demand of waters associated with the use of sewage sludge compost and limestone outcrop as a filtration system. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Han Z, Qi F, Wang H, Liu B, Shen X, Song C, Bao Z, Zhao X, Xu Y, Sun D. Emission characteristics of volatile sulfur compounds (VSCs) from a municipal sewage sludge aerobic composting plant. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 77:593-602. [PMID: 29907364 DOI: 10.1016/j.wasman.2018.05.049] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/10/2018] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
The emission of volatile sulfur compounds (VSCs) causing strong odors is a major problem in municipal sewage sludge composting plants (MSSACPs). Improving the knowledge on characteristics of VSCs emission in MSAACPs is of particular significance to elimate odors, but the studies conducted on-site to identify them are scarce. To this purpose, characteristics of VSCs emission were studied on-site from a MSSACP during different ambient temperatures corresponding with seasonal variations. Results reveal that (1) the total emission of VSCs which included methyl disulfide (DMDS), methyl sulfide (DMS), carbon disulfide, methyl mercaptan, and hydrogen sulfide (H2S) was 561.89 mg/dry kg in summer, 358.45 mg/dry kg in spring, and 215.52 mg/dry kg in winter, and the greatest amounts of VSCs were emitted during the mesophilic and pre-thermophilic phases; (2) although DMDS and DMS contributed the most towards total VSCs emissions during winter (81.93%), spring (82.55%), and summer (83.90%), their odor contributions were less than that of H2S; (3) in summer, the odor nuisance of total VSCs was higher than that in winter and spring; (4) sulfur loss in the form of VSCs emissions and total sulfur loss both increased with rising ambient temperatures during the sewage sludge aerobic composting. Results obtained in this study will be beneficial towards the elimation of odors released from MSSACPs.
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Affiliation(s)
- Zhangliang Han
- 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
| | - Fei Qi
- 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
| | - Hui Wang
- 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
| | - Baoxian Liu
- Beijing Key Laboratory of Airborne Particulate Matter Monitoring Technology, Beijing Municipal Environment Monitoring Center, Beijing 100048, China
| | - Xiue Shen
- Beijing Key Laboratory of Airborne Particulate Matter Monitoring Technology, Beijing Municipal Environment Monitoring Center, Beijing 100048, China
| | - Cheng Song
- Beijing Key Laboratory of Airborne Particulate Matter Monitoring Technology, Beijing Municipal Environment Monitoring Center, Beijing 100048, China
| | - Zhiyuan Bao
- 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
| | - Xufeng Zhao
- 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
| | - Yangjie Xu
- 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.
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Wang K, Mao H, Li X. Functional characteristics and influence factors of microbial community in sewage sludge composting with inorganic bulking agent. BIORESOURCE TECHNOLOGY 2018; 249:527-535. [PMID: 29080516 DOI: 10.1016/j.biortech.2017.10.034] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/01/2017] [Accepted: 10/07/2017] [Indexed: 05/25/2023]
Abstract
The metabolic function of microbial community dominated organics and nutrients transformation in aerobic composting process. In this study, the metabolic characteristics of bacterial and fungal communities were evaluated in 60 days composting of sludge and pumice by using FUNGuild and PICRUSt, respectively. The results showed that microbial community structure and metabolic characteristics were distinctively different at four composting periods. Bacterial genes related to carbohydrate metabolisms decreased during the first 30 days, but bacterial sequences associated with oxidative phosphorylation and fatty acids synthesis were enhanced in curing phase. Most of fungal animal pathogen and plant pathogen disappeared after treatment, and the abundance of saprotroph fungi increased from 44.3% to 97.8%. Oxidation reduction potential (ORP) significantly increased from -28 to 175 mV through incubation. RDA analysis showed that ORP was a crucial factor on the succession of both bacterial and fungal communities in sludge composting system.
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Affiliation(s)
- Ke Wang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, China
| | - Hailong Mao
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, China
| | - Xiangkun Li
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, 73 Huanghe Road, Harbin, Heilongjiang 150090, China.
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