1
|
Wang L, Lee E, Barlaz MA, de Los Reyes FL. Linking microbial population dynamics in anaerobic bioreactors to food waste type and decomposition stage. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 186:77-85. [PMID: 38865907 DOI: 10.1016/j.wasman.2024.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 05/18/2024] [Accepted: 06/06/2024] [Indexed: 06/14/2024]
Abstract
A key question in anaerobic microbial ecology is how microbial communities develop over different stages of waste decomposition and whether these changes are specific to waste types. We destructively sampled over time 26 replicate bioreactors cultivated on fruit/vegetable waste (FVW) and meat waste (MW) based on pre-defined waste components and composition. To characterize community shifts, we examined 16S rRNA genes from both the leachate and solid fractions of the waste. Waste decomposition occurred faster in FVW than MW, as accumulation of ammonia in MW reactors led to inhibition of methanogenesis. We identified population succession during different stages of waste decomposition and linked specific populations to different waste types. Community analyses revealed underrepresentation of methanogens in the leachate fractions, emphasizing the importance of consistent and representative sampling when characterizing microbial communities in solid waste.
Collapse
Affiliation(s)
- Ling Wang
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695
| | - Eunyoung Lee
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695
| | - Morton A Barlaz
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695
| | - Francis L de Los Reyes
- Department of Civil, Construction, and Environmental Engineering, North Carolina State University, Raleigh, NC 27695.
| |
Collapse
|
2
|
Xie Y, Wang H, Guo Y, Wang C, Cui H, Xue J. Effects of biochar-amended soils as intermediate covers on the physical, mechanical and biochemical behaviour of municipal solid wastes. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 171:512-521. [PMID: 37806159 DOI: 10.1016/j.wasman.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/23/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
The effects of biochar-amended soils as landfill covers have been extensively studied in terms of liquid and gas permeability. However, the influences of biochar-amended soils on the performance of municipal solid wastes (MSWs) in bioreactor landfills have not been well understood. This paper investigates the potential application of biochar-amended soils as final and intermediate covers in landfills. The MSWs with biochar-amended soils as final and intermediate covers were recirculated with mature leachate in laboratory-scale bioreactors. The pH, chemical oxygen demand, ammonia and volatile fatty acids (VFAs) concentrations of leachates, mass reduction rates, settlement, methane, and total gas generations of MSWs were investigated. The results indicate that biochar-amended soils as intermediate landfill covers can provide pH-buffer capacity, increase the pH of leachate and decrease the accumulation of VFAs in the early stage of decomposition. The concentration of ammonia in the leachate with biochar-amended soils as intermediate cover is lower than that with natural soils. The application of biochar-amended soils as intermediate and/or final covers increases the biocompression ratios and settlement of MSWs. The application of biochar-amended soils as final cover slightly decreases the methane generation potential (L0). Biochar-amended soils as intermediate covers increase L0 by 10%, and biochar-amended soils as both intermediate and final covers enhance L0 by 25%. The increase in the ammonia removal, settlement, and methane yield indicates the viability of biochar-amended soils as intermediate landfill covers. Further studies can focus on the long-term behaviour of MSWs with soil covers with different biochar amendment rates and particle sizes.
Collapse
Affiliation(s)
- Yuekai Xie
- School of Engineering and Technology, University of New South Wales, Canberra, ACT 2612, Australia
| | - Hongxu Wang
- School of Engineering and Technology, University of New South Wales, Canberra, ACT 2612, Australia
| | - Yingying Guo
- Civil Branch, Infrastructure Delivery Partner, Major Projects Canberra, Canberra, ACT 2606, Australia
| | - Chenman Wang
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
| | - Hanwen Cui
- School of Engineering and Technology, University of New South Wales, Canberra, ACT 2612, Australia; Queensland Department of Transport and Main Roads, South Coast Region, Nerang, QLD 4211, Australia
| | - Jianfeng Xue
- School of Engineering and Technology, University of New South Wales, Canberra, ACT 2612, Australia.
| |
Collapse
|
3
|
Alarcón-Vivero M, Moena NRT, Gonzalez F, Jopia-Contreras P, Aspé E, Briones HU, Fernandez KS. Anaerobic biofilm enriched with an ammonia tolerant methanogenic consortium to improve wastewater treatment in the fishing industry. Biotechnol Lett 2022; 44:239-251. [PMID: 35037233 DOI: 10.1007/s10529-021-03213-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 11/29/2021] [Indexed: 11/29/2022]
Abstract
The digestion efficiency of liquid industrial wastes increases when using bioreactors colonized by microbial biofilms. High concentrations of proteins derived from the fish processing industry lead to the production of ammonia, which inhibits methane production. Two bioreactors were constructed to compare methanogenic activity: one enriched with mMPA (methylaminotrofic methane production archaea) consortia (control bioreactor), and the second with NH3 tolerant consortia (treatment bioreactor). Ammonia tolerant activity was assessed by applying an ammonia shock (755 mg NH3/L). Methane production, consumption of total organic carbon (TOC) and the taxonomic composition of bacteria and archaea was evaluated using 16S rDNA in the acclimatization, ammonia shock, and recovery phases.The ammonia shock significantly affected both methane production and the consumption of TOC in the control reactor (p < 0.05) and taxonomical composition of the microbial consortia (OTU). These values remained constant in the treatment reactor. The analysis of biofilm composition showed a predominance of Methanosarcinaceae (Methanomethylovorans sp., and probably two different species of Methanosarcina sp.) in bioreactors. These results demonstrate that using acclimated biofilms enriched with ammonia tolerant methanogens control the inhibitory effect of ammonia on methanogenesis.
Collapse
Affiliation(s)
- Manuel Alarcón-Vivero
- Instituto de Acuicultura, Universidad Austral de Chile (UACh), Sede Puerto Montt, Puerto Montt, Chile
| | - Nathaly Ruiz-Tagle Moena
- Lab. Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile
| | - Fidelina Gonzalez
- Departamento de Biología Celular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | | | - Estrella Aspé
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Concepción, Concepción, Chile
| | - Homero Urrutia Briones
- Lab. Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile.,Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Katherine Sossa Fernandez
- Lab. Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Concepción, Chile. .,Facultad de Ciencias Forestales, Universidad de Concepción, Concepción, Chile.
| |
Collapse
|
4
|
Yan Y, Yan M, Ravenni G, Angelidaki I, Fu D, Fotidis IA. Novel bioaugmentation strategy boosted with biochar to alleviate ammonia toxicity in continuous biomethanation. BIORESOURCE TECHNOLOGY 2022; 343:126146. [PMID: 34673199 DOI: 10.1016/j.biortech.2021.126146] [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: 07/23/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
This study investigated for the first time if ammonia tolerant methanogenic consortia can be stored in gel (biogel) and used in a later time on-demand as bioaugmentation inocula, to efficiently relieve ammonia inhibition in continuous biomethanation systems. Moreover, wood biochar was assessed as a potential enhancer of the novel biogel bioaugmentation process. Three thermophilic (55 °C), continuous stirred-tank reactors (RBgel, RChar and RMix), operated at 4.5 g NH4+-N L-1 were exposed to biogel, biochar and mixture of biogel and biochar, respectively, while a fourth reactor (RCtrl) was used as control. The results showed that the methane production yields of RMix, RChar and RBgel increased by 28.6%, 20.2% and 10.7%, respectively compared to RCtrl. The highest methane yield was achieved by the synergistic interaction between biogel and biochar. Additionally, biogel stimulated a rapid recovery of Methanoculleus thermophilus sp. and syntrophic acetate oxidising bacteria populations.
Collapse
Affiliation(s)
- Yixin Yan
- School of Civil Engineering Southeast University, 210096, Nanjing, China; Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet Bygning 115, DK-2800, Kgs. Lyngby, Denmark
| | - Miao Yan
- Department of Environmental Engineering, Technical University of Denmark, Bygningstorvet Bygning 115, DK-2800, Kgs. Lyngby, Denmark; NUS Environmental Research Institute, National University of Singapore, 1 Create Way, 138602, Singapore
| | - Giulia Ravenni
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 313, 4000, Roskilde, Denmark
| | - Irini Angelidaki
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Dafang Fu
- School of Civil Engineering Southeast University, 210096, Nanjing, China
| | - Ioannis A Fotidis
- School of Civil Engineering Southeast University, 210096, Nanjing, China; Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland; Faculty of Environment, Ionian University, 29100, Zakynthos, Greece.
| |
Collapse
|
5
|
Zhang Y, Huang M, Zheng F, Guo S, Song X, Liu S, Li S, Zou J. Decreased Methane Emissions Associated with Methanogenic and Methanotrophic Communities in a Pig Manure Windrow Composting System under Calcium Superphosphate Amendment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6244. [PMID: 34207733 PMCID: PMC8296093 DOI: 10.3390/ijerph18126244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 11/18/2022]
Abstract
With the rapid growth of livestock breeding, manure composting has evolved to be an important source of atmospheric methane (CH4) which accelerates global warming. Calcium superphosphate (CaSSP), as a commonly used fertilizer, was proposed to be effective in reducing CH4 emissions from manure composting, but the intrinsic biological mechanism remains unknown. Methanogens and methanotrophs both play a key role in mediating CH4 fluxes, therefore we hypothesized that the CaSSP-mediated reduction in CH4 emissions was attributed to the shift of methanogens and methanotrophs, which was regulated by physicochemical parameter changes. To test this hypothesis, a 60-day pig manure windrow composting experiment was conducted to investigate the response of CH4 emissions to CaSSP amendment, with a close linkage to methanogenic and methanotrophic communities. Results showed that CaSSP amendment significantly reduced CH4 emissions by 49.5% compared with the control over the whole composting period. The decreased mcrA gene (encodes the α-subunit of methyl-coenzyme M reductase) abundance in response to CaSSP amendment suggested that the CH4 emissions were reduced primarily due to the suppressed microbial CH4 production. Illumina MiSeq sequencing analysis showed that the overall distribution pattern of methanogenic and methanotrophic communities were significantly affected by CaSSP amendment. Particularly, the relative abundance of Methanosarcina that is known to be a dominant group for CH4 production, significantly decreased by up to 25.3% accompanied with CaSSP addition. Only Type I methanotrophs was detected in our study and Methylocaldum was the dominant methanotrophs in this composting system; in detail, CaSSP amendment increased the relative abundance of OTUs belong to Methylocaldum and Methylobacter. Moreover, the increased SO42- concentration and decreased pH acted as two key factors influencing the methanogenic and methanotrophic composition, with the former has a negative effect on methanogenesis growth and can later promote CH4 oxidation at a low level. This study deepens our understanding of the interaction between abiotic factors, function microbiota and greenhouse gas (GHG) emissions, as well as provides implication for practically reducing composting GHG emissions.
Collapse
Affiliation(s)
- Yihe Zhang
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
| | - Mengyuan Huang
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
| | - Fengwei Zheng
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
| | - Shumin Guo
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
| | - Xiuchao Song
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
| | - Shuwei Liu
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
- Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China
| | - Shuqing Li
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
- Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianwen Zou
- Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (Y.Z.); (M.H.); (F.Z.); (S.G.); (S.L.); (J.Z.)
- Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, China
| |
Collapse
|
6
|
Indren M, Birzer CH, Kidd SP, Medwell PR. Effect of total solids content on anaerobic digestion of poultry litter with biochar. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 255:109744. [PMID: 31756577 DOI: 10.1016/j.jenvman.2019.109744] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/14/2019] [Accepted: 10/20/2019] [Indexed: 05/22/2023]
Abstract
Methane production via anaerobic digestion of poultry litter provides a pathway for energy production from an abundant waste product. Recent studies have shown the use of biochar (pyrolysed biomass) can decrease methane production lag times and increase peak daily yields from ammonia-stressed low-solids anaerobic digesters. Due to the variety of feedstocks and digester configurations used, research to date has not yet determined the effect of biochar addition as a function of the digester total solids content. This study shows the addition of biochar reduces the lag time by a greater percentage in the digesters with a higher total solids content. There was a 17%, 27% and 41% reduction lag time due to biochar addition at total solids contents of 5%, 10% and 20%, respectively. The peak daily methane yield increased by 136% at 10% total solids. There was no significant increase in the peak yield at 5% total solids, while there was a 46% increase at 20% total solids. Real-time PCR analysis confirms the Methanosaetaceae family, which is a key methanogen due to its ability to facilitate direct interspecies electron transfer while attached to biochar, preferentially attaches to biochar. Furthermore, this research shows the attachment of the Methanosaetaceae family, does not decrease with increasing total solids content. A potential negative effect of biochar addition, a reduced volumetric efficiency, can be negated by using a shorter retention time. This new understanding will help to improve predictions of the impact of biochar addition for new digester designs operating in semi-solids and high-solids conditions.
Collapse
Affiliation(s)
- Mathu Indren
- School of Mechanical Engineering, The University of Adelaide, SA, 5005, Australia; Humanitarian and Development Solutions Initiative, The University of Adelaide, SA, 5005, Australia.
| | - Cristian H Birzer
- School of Mechanical Engineering, The University of Adelaide, SA, 5005, Australia; Humanitarian and Development Solutions Initiative, The University of Adelaide, SA, 5005, Australia
| | - Stephen P Kidd
- School of Biological Sciences, The University of Adelaide, SA, 5005, Australia; Humanitarian and Development Solutions Initiative, The University of Adelaide, SA, 5005, Australia
| | - Paul R Medwell
- School of Mechanical Engineering, The University of Adelaide, SA, 5005, Australia; Humanitarian and Development Solutions Initiative, The University of Adelaide, SA, 5005, Australia
| |
Collapse
|
7
|
Liu X, Zhang M, Li Z, Zhang C, Wan C, Zhang Y, Lee DJ. Inhibition of urease activity by humic acid extracted from sludge fermentation liquid. BIORESOURCE TECHNOLOGY 2019; 290:121767. [PMID: 31302466 DOI: 10.1016/j.biortech.2019.121767] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/02/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023]
Abstract
This study achieved effective extraction of humic acid from sludge fermentation liquid, and the inhibition of urease activity by the extract were investigated in the urea decomposition. The addition of extract could remarkably inhibit urease activity and extend the releasing time of ammonia nitrogen. The interaction between the extract and urease took times, and the inhibition was irreversible. The results of fluorescence analysis revealed that the inhibition of urease activity was correlated to the amount of humic acid extracted. The mechanisms of inhibition were proposed that the functional groups of humic acid might interact with the thiol group of urease and formed a larger particle size of complex to inhibit the activity of urease. The extraction of humic acid from sludge fermentation liquid can not only recover the resource from the fermentation liquid, but also provide a potential urease inhibitor for the sustained-release effect of the soil organic nitrogen fertilizer.
Collapse
Affiliation(s)
- Xiang Liu
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Min Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Zhengwen Li
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Chen Zhang
- Shanghai Municipal Engineering Design General Institute, Shanghai 200092, China
| | - Chunli Wan
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China.
| | - Yi Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| |
Collapse
|
8
|
Akindele AA, Sartaj M. The toxicity effects of ammonia on anaerobic digestion of organic fraction of municipal solid waste. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 71:757-766. [PMID: 28739024 DOI: 10.1016/j.wasman.2017.07.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/26/2017] [Accepted: 07/16/2017] [Indexed: 06/07/2023]
Abstract
In this research the inhibitory effects of ammonia on the AD of synthetic OFMSW were examined under different total ammonia nitrogen (TAN) concentrations of 2,500, 5,000, 7,500, and 10,000mg/L and at pH levels of 7.5, 8.0 and 8.5 using a factorial experimental design and statistical analysis. Reduction in Cumulative Biogas Production (CBP) at a TAN concentration of 2,500mg/L was close to 10% for all 3 pH levels. For a TAN concentration of 10,000mg/L the percent reduction in CBP was over 80% for all 3 pH levels showing significant inhibition due to ammonia with neglible influence due to change in pH. However, pH played a more significant role for TAN concentrations between the above two levels, as at a TAN concentartion of 7,500mg/L, the percent reduction in CBP increased from 42.2% at a pH of 7.5 to 76.5% at a pH of 8.5. Regression analysis was used to estimate CBP and % reduction (%R) in CBP using a quadratic equation with pH and TAN as independant variables (R2=0.95 and 0.94). Methane produciton per g of COD removed was obsereved to vary from 264mL CH4/g CODd for control reactors at pH 7.5 down to 1mL CH4/g CODd for the reactor at pH of 8.5 which contained 10,000mg/L TAN. Results of gradual ammonia loading also showed that mesophilic bacteria could be adapted to a TAN concentration of up to 5,000mg/L at pH 7.5 through gradual TAN loading. At 10,000mg/L TAN CBP in reactors with gradual TAN loading was more than 1.9-3 times the CBP in reactors with abrupt TAN addition.
Collapse
Affiliation(s)
| | - Majid Sartaj
- Civil Engineering Department, University of Ottawa, Ottawa, Canada.
| |
Collapse
|
9
|
Methanogenic community compositions in surface sediment of freshwater aquaculture ponds and the influencing factors. Antonie van Leeuwenhoek 2017; 111:115-124. [DOI: 10.1007/s10482-017-0932-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 08/17/2017] [Indexed: 01/24/2023]
|
10
|
Jha P, Schmidt S. Reappraisal of chemical interference in anaerobic digestion processes. RENEWABLE AND SUSTAINABLE ENERGY REVIEWS 2017; 75:954-971. [DOI: 10.1016/j.rser.2016.11.076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
|
11
|
Stoyanova E, Lundaa T, Bochmann G, Fuchs W. Overcoming the bottlenecks of anaerobic digestion of olive mill solid waste by two-stage fermentation. ENVIRONMENTAL TECHNOLOGY 2017; 38:394-405. [PMID: 27279450 DOI: 10.1080/09593330.2016.1196736] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two-stage anaerobic digestion (AD) of two-phase olive mill solid waste (OMSW) was applied for reducing the inhibiting factors by optimizing the acidification stage. Single-stage AD and co-fermentation with chicken manure were conducted coinstantaneous for direct comparison. Degradation of the polyphenols up to 61% was observed during the methanogenic stage. Nevertheless the concentration of phenolic substances was still high; the two-stage fermentation remained stable at OLR 1.5 kgVS/m³day. The buffer capacity of the system was twice as high, compared to the one-stage fermentation, without additives. The two-stage AD was a combined process - thermophilic first stage and mesophilic second stage, which pointed out to be the most profitable for AD of OMSW for the reduced hydraulic retention time (HRT) from 230 to 150 days, and three times faster than the single-stage and the co-fermentation start-up of the fermentation. The optimal HRT and incubation temperature for the first stage were determined to four days and 55°C. The performance of the two-stage AD concerning the stability of the process was followed by the co-digestion of OMSW with chicken manure as a nitrogen-rich co-substrate, which makes them viable options for waste disposal with concomitant energy recovery.
Collapse
Affiliation(s)
| | - Tserennyam Lundaa
- b Department IFA - Tulln , Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna , Vienna , Austria
| | - Günther Bochmann
- b Department IFA - Tulln , Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna , Vienna , Austria
| | - Werner Fuchs
- b Department IFA - Tulln , Institute for Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna , Vienna , Austria
| |
Collapse
|
12
|
Matassi G. Horizontal gene transfer drives the evolution of Rh50 permeases in prokaryotes. BMC Evol Biol 2017; 17:2. [PMID: 28049420 PMCID: PMC5209957 DOI: 10.1186/s12862-016-0850-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 12/09/2016] [Indexed: 01/22/2023] Open
Abstract
Background Rh50 proteins belong to the family of ammonia permeases together with their Amt/MEP homologs. Ammonia permeases increase the permeability of NH3/NH4+ across cell membranes and are believed to be involved in excretion of toxic ammonia and in the maintenance of pH homeostasis. RH50 genes are widespread in eukaryotes but absent in land plants and fungi, and remarkably rare in prokaryotes. The evolutionary history of RH50 genes in prokaryotes is just beginning to be unveiled. Results Here, a molecular phylogenetic approach suggests horizontal gene transfer (HGT) as a primary force driving the evolution and spread of RH50 among prokaryotes. In addition, the taxonomic distribution of the RH50 gene among prokaryotes turned out to be very narrow; a single-copy RH50 is present in the genome of only a small proportion of Bacteria, and, first evidence to date, in only three methanogens among Euryarchaea. The coexistence of RH50 and AMT in prokaryotes seems also a rare event. Finally, phylogenetic analyses were used to reconstruct the HGT network along which prokaryotic RH50 evolution has taken place. Conclusions The eukaryotic or bacterial “origin” of the RH50 gene remains unsolved. The RH50 prokaryotic HGT network suggests a preferential directionality of transfer from aerobic to anaerobic organisms. The observed HGT events between archaeal methanogens, anaerobic and aerobic ammonia-oxidizing bacteria suggest that syntrophic relationships play a major role in the structuring of the network, and point to oxygen minimum zones as an ecological niche that might be of crucial importance for HGT-driven evolution. Electronic supplementary material The online version of this article (doi:10.1186/s12862-016-0850-6) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Giorgio Matassi
- Dipartimento di Scienze Agro-alimentari, Ambientali e Animali (DI4A), Università di Udine, Via delle Scienze, 206-33100, Udine, Italy.
| |
Collapse
|
13
|
Impact of Ammonium on Syntrophic Organohalide-Respiring and Fermenting Microbial Communities. mSphere 2016; 1:mSphere00053-16. [PMID: 27303735 PMCID: PMC4894693 DOI: 10.1128/msphere.00053-16] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 03/10/2016] [Indexed: 01/27/2023] Open
Abstract
Contamination with ammonium and chlorinated solvents has been reported in numerous subsurface environments, and these chemicals bring significant challenges for in situ bioremediation. Dehalococcoides mccartyi is able to reduce the chlorinated solvent trichloroethene to the nontoxic end product ethene. Fermentative bacteria are of central importance for organohalide respiration and bioremediation to provide D. mccartyi with H2, their electron donor, acetate, their carbon source, and other micronutrients. In this study, we found that high concentrations of ammonium negatively correlated with rates of trichloroethene reductive dehalogenation and fermentation. However, detoxification of trichloroethene to nontoxic ethene occurred even at ammonium concentrations typical of those found in animal waste (up to 2 g liter−1 NH4+-N). To date, hundreds of subsurface environments have been bioremediated through the unique metabolic capability of D. mccartyi. These findings extend our knowledge of D. mccartyi and provide insight for bioremediation of sites contaminated with chlorinated solvents and ammonium. Syntrophic interactions between organohalide-respiring and fermentative microorganisms are critical for effective bioremediation of halogenated compounds. This work investigated the effect of ammonium concentration (up to 4 g liter−1 NH4+-N) on trichloroethene-reducing Dehalococcoides mccartyi and Geobacteraceae in microbial communities fed lactate and methanol. We found that production of ethene by D. mccartyi occurred in mineral medium containing ≤2 g liter−1 NH4+-N and in landfill leachate. For the partial reduction of trichloroethene (TCE) to cis-dichloroethene (cis-DCE) at ≥1 g liter−1 NH4+-N, organohalide-respiring dynamics shifted from D. mccartyi and Geobacteraceae to mainly D. mccartyi. An increasing concentration of ammonium was coupled to lower metabolic rates, longer lag times, and lower gene abundances for all microbial processes studied. The methanol fermentation pathway to acetate and H2 was conserved, regardless of the ammonium concentration provided. However, lactate fermentation shifted from propionic to acetogenic at concentrations of ≥2 g liter−1 NH4+-N. Our study findings strongly support a tolerance of D. mccartyi to high ammonium concentrations, highlighting the feasibility of organohalide respiration in ammonium-contaminated subsurface environments. IMPORTANCE Contamination with ammonium and chlorinated solvents has been reported in numerous subsurface environments, and these chemicals bring significant challenges for in situ bioremediation. Dehalococcoides mccartyi is able to reduce the chlorinated solvent trichloroethene to the nontoxic end product ethene. Fermentative bacteria are of central importance for organohalide respiration and bioremediation to provide D. mccartyi with H2, their electron donor, acetate, their carbon source, and other micronutrients. In this study, we found that high concentrations of ammonium negatively correlated with rates of trichloroethene reductive dehalogenation and fermentation. However, detoxification of trichloroethene to nontoxic ethene occurred even at ammonium concentrations typical of those found in animal waste (up to 2 g liter−1 NH4+-N). To date, hundreds of subsurface environments have been bioremediated through the unique metabolic capability of D. mccartyi. These findings extend our knowledge of D. mccartyi and provide insight for bioremediation of sites contaminated with chlorinated solvents and ammonium.
Collapse
|
14
|
Yun YM, Kim DH, Cho SK, Shin HS, Jung KW, Kim HW. Mitigation of ammonia inhibition by internal dilution in high-rate anaerobic digestion of food waste leachate and evidences of microbial community response. Biotechnol Bioeng 2016; 113:1892-901. [DOI: 10.1002/bit.25968] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 02/18/2016] [Accepted: 02/22/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Yeo-Myeong Yun
- College of Agriculture; Forestry and Natural Resource Management; University of Hawaii at Hilo; Hilo Hawaii
| | - Dong-Hoon Kim
- Department of Civil Engineering; Inha University; Nam-gu, Incheon Republic of Korea
| | - Si-Kyung Cho
- Department of Biological and Environmental Science; Dongguk University; Ilsandong-gu, Goyang Republic of Korea
| | - Hang-Sik Shin
- Department of Civil and Environmental Engineering; KAIST; Yuseong-gu, Daejeon Republic of Korea
| | - Kyung-Won Jung
- Center for Water Resources Cycle Research; Korea Institute of Science and Technology; Seonbuk-gu, Seoul Republic of Korea
| | - Hyun-Woo Kim
- Department of Environmental Engineering; Soil Environment Research Center; Chonbuk National University; 567 Baekje-daero, deokjin-gu Jeonju 54896 Republic of Korea
| |
Collapse
|
15
|
Zeng Y, De Guardia A, Dabert P. Improving composting as a post-treatment of anaerobic digestate. BIORESOURCE TECHNOLOGY 2016; 201:293-303. [PMID: 26684176 DOI: 10.1016/j.biortech.2015.11.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 10/31/2015] [Accepted: 11/05/2015] [Indexed: 06/05/2023]
Abstract
This work investigated the influences of practical parameters upon composting of digestate. The yardsticks for evaluation were digestate stabilization, nitrogenous emissions mitigation and self-heating potential. The results suggest choosing an "active" bulking agent like dry wood chips (WC) which served as free-water and nitrogen sink through composting. At an optimal volumetric WC:digestate mixing ratio of 4:1, nearly 90% of the initial NH4(+)/NH3 were fixed, which reduced significantly nitrogenous emissions. This mixing ratio also improved the stabilization and self-heating potential. Using small particle size WC increased narrowly O2 consumption and reduced NH3 emission. Storing used WC prior to recycling reduced 40% N2O emission compared to directly recycled WC. Recycling compost helped to decrease NH3 emission, but quadrupled N2O emission. The optimal aeration rate (15Lh(-1)kg OM0) which was lower compared to composting of organic waste, was enough to ensure the O2 supply and ameliorate the self-heating potential through composting of digestate.
Collapse
Affiliation(s)
- Yang Zeng
- Irstea, UR GERE, 17 avenue de Cucillé, CS 64427, F-35044 Rennes Cedex, France
| | - Amaury De Guardia
- Irstea, UR GERE, 17 avenue de Cucillé, CS 64427, F-35044 Rennes Cedex, France
| | - Patrick Dabert
- Irstea, UR GERE, 17 avenue de Cucillé, CS 64427, F-35044 Rennes Cedex, France
| |
Collapse
|
16
|
Zhao B, Li J, Buelna G, Dubé R, Le Bihan Y. A combined upflow anaerobic sludge bed and trickling biofilter process for the treatment of swine wastewater. ENVIRONMENTAL TECHNOLOGY 2015; 37:1265-1275. [PMID: 26588487 DOI: 10.1080/09593330.2015.1111426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A combined upflow anaerobic sludge blanket (UASB)-trickling biofilter (TBF) process was constructed to treat swine wastewater, a typical high-strength organic wastewater with low carbon/nitrogen ratio and ammonia toxicity. The results showed that the UASB-TBF system can remarkably enhance the removal of pollutants in the swine wastewater. At an organic loading rate of 2.29 kg/m(3) d and hydraulic retention time of 48 h in the UASB, the chemical oxygen demand (COD), Suspended Solids and Total Kjeldahl Nitrogen removals of the combined process reached 83.6%, 84.1% and 41.2%, respectively. In the combined system the UASB served as a pretreatment process for COD removal while nitrification and denitrification occurred only in the TBF process. The TBF performed reasonably well at a surface hydraulic load as high as 0.12 m(3)/m(2) d. Since the ratio of influent COD to total mineral nitrogen was less than 3.23, it is reasonable to suggest that the wood chips in TBF can serve as a new carbon source for denitrification.
Collapse
Affiliation(s)
- Bowei Zhao
- a State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin , People's Republic of China
| | - Jiangzheng Li
- b Centre de Recherche Industrielle du Québec , Québec , Canada
| | - Gerardo Buelna
- b Centre de Recherche Industrielle du Québec , Québec , Canada
| | - Rino Dubé
- b Centre de Recherche Industrielle du Québec , Québec , Canada
| | - Yann Le Bihan
- b Centre de Recherche Industrielle du Québec , Québec , Canada
| |
Collapse
|
17
|
Yang F, Li G, Shi H, Wang Y. Effects of phosphogypsum and superphosphate on compost maturity and gaseous emissions during kitchen waste composting. WASTE MANAGEMENT (NEW YORK, N.Y.) 2015; 36:70-76. [PMID: 25481697 DOI: 10.1016/j.wasman.2014.11.012] [Citation(s) in RCA: 155] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 11/12/2014] [Accepted: 11/12/2014] [Indexed: 06/04/2023]
Abstract
This study investigated the effects of phosphogypsum and superphosphate on the maturity and gaseous emissions of composting kitchen waste. Two amended compost treatments were conducted using phosphogypsum and superphosphate as additives with the addition of 10% of initial raw materials (dry weight). A control treatment was also studied. The treatments were conducted under aerobic conditions in 60-L reactors for 35 days. Maturity indexes were determined, and continuous measurements of CH4, N2O, and NH3 were taken. Phosphogypsum and superphosphate had no negative effects on compost maturity, although superphosphate inhibited the temperature rise in the first few days. The addition of phosphogypsum and superphosphate drastically reduced CH4 emissions (by 85.8% and 80.5%, respectively) and decreased NH3 emissions (by 23.5% and 18.9%, respectively). However, a slight increase in N2O emissions (by 3.2% and 14.8%, respectively) was observed. Composting with phosphogypsum and superphosphate reduced total greenhouse gas emissions by 17.4% and 7.3% respectively.
Collapse
Affiliation(s)
- Fan Yang
- College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China; Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
| | - Guoxue Li
- College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China.
| | - Hong Shi
- College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Yiming Wang
- College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China
| |
Collapse
|
18
|
Montalvo S, Martin JS, Huiliñir C, Guerrero L, Borja R. Assessment of a UASB reactor with high ammonia concentrations: Effect of zeolite addition on process performance. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.09.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
19
|
Mumme J, Srocke F, Heeg K, Werner M. Use of biochars in anaerobic digestion. BIORESOURCE TECHNOLOGY 2014; 164:189-97. [PMID: 24859210 DOI: 10.1016/j.biortech.2014.05.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 04/28/2014] [Accepted: 05/02/2014] [Indexed: 05/16/2023]
Abstract
This study investigated the behavior of biochars from pyrolysis (pyrochar) and hydrothermal carbonization (hydrochar) in anaerobic digestion regarding their degradability and their effects on biogas production and ammonia inhibition. A batch fermentation experiment (42°C, 63 days) was conducted in 100mL syringes filled with 30 g inoculum, 2g biochar and four levels of total ammonium nitrogen (TAN). For pyrochar, no clear effect on biogas production was observed, whereas hydrochar increased the methane yield by 32%. This correlates with the hydrochar's larger fraction of anaerobically degradable carbon (10.4% of total carbon, pyrochar: 0.6%). Kinetic and microbiota analyses revealed that pyrochar can prevent mild ammonia inhibition (2.1 g TANk g(-1)). Stronger inhibitions (3.1-6.6 g TAN kg(-1)) were not mitigated, neither by pyrochar nor by hydrochar. Future research should pay attention to biochar-microbe interactions and the effects in continuously-fed anaerobic digesters.
Collapse
Affiliation(s)
- Jan Mumme
- APECS Group, Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Max-Eyth-Allee 100, 14469 Potsdam, Germany.
| | - Franziska Srocke
- Department of Plant Science, McGill University, Macdonald Campus, 21111 Lakeshore Road, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Kathrin Heeg
- APECS Group, Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Max-Eyth-Allee 100, 14469 Potsdam, Germany
| | - Maja Werner
- APECS Group, Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Max-Eyth-Allee 100, 14469 Potsdam, Germany
| |
Collapse
|
20
|
|
21
|
Parameswaran P, Rittmann BE. Feasibility of anaerobic co-digestion of pig waste and paper sludge. BIORESOURCE TECHNOLOGY 2012; 124:163-168. [PMID: 22995161 DOI: 10.1016/j.biortech.2012.07.116] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 07/24/2012] [Accepted: 07/26/2012] [Indexed: 06/01/2023]
Abstract
Pig waste (PW) and paper sludge (PS) possess complementary properties that can be combined for successful anaerobic digestion. Biochemical methane potential (BMP) tests revealed that a PW:PS 3:1 (v/v) ratio had the highest normalized CH(4)-COD removal (54%), while PS had the lowest value (11%) and PW had 44%. Batch BMP tests revealed a significant decrease in lag times for methane production in the order of PW:PS 1:3 (14 days)<PW:PS 1:1 (17 days)<PW:PS 3:1 (20 days)<PW (23 days). Hydrolysis constants (k(hyd)) were higher for all PW:PS combinations than for either of the individual waste streams: 0.004 d(-1) (PS)<0.02 d(-1) (PW)<0.024 d(-1) (PW:PS 3:1)<0.03 d(-1) (PW:PS 1:1)<0.05 d(-1) (PW:PS 1:3). Semi-continuous reactors performing co-digestion of PW and PS at a 2:1 ratio showed 1.5 times higher methane production than baseline PW-only reactors, confirming the BMP results.
Collapse
Affiliation(s)
- Prathap Parameswaran
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University, Tempe, AZ 85287-5701, USA.
| | | |
Collapse
|
22
|
Liu J, Luo J, Zhou J, Liu Q, Qian G, Xu ZP. Inhibitory effect of high-strength ammonia nitrogen on bio-treatment of landfill leachate using EGSB reactor under mesophilic and atmospheric conditions. BIORESOURCE TECHNOLOGY 2012; 113:239-243. [PMID: 22196070 DOI: 10.1016/j.biortech.2011.11.114] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 11/26/2011] [Accepted: 11/27/2011] [Indexed: 05/31/2023]
Abstract
The inhibitory effect of high-strength NH(3)-N on anaerobic biodegradation of landfill leachates in an EGSB bioreactor has been investigated. The research compared start-up performance of the reactor treating the landfill leachate with NH(3)-N in 242-1200 mg/l to that treating the compost leachate with NH(3)-N in 38-410 mg/l. The observations showed that the performance of the reactor treating the landfill leachate was only marginally worse than that treating the compost leachate at the mesophilic temperature when NH(3)-N concentration was under 1500 mg/l. We also noted that NH(3)-N at the concentration of 1500-3000 mg/l inhibited the biodegradation. The comparative biodegradation performance at the mesophilic and atmospheric temperature demonstrated that the maximal OLR of atmospheric digestion was only reduced to 44 kg COD/m(3)d. These findings indicate that landfill leachates with NH(3)-N less than 1500 mg/l could be efficiently treated in the EGSB bioreactor even under the atmospheric condition with methane generated.
Collapse
Affiliation(s)
- Jianyong Liu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China
| | | | | | | | | | | |
Collapse
|
23
|
Yang Y, Xu M, Wall JD, Hu Z. Nanosilver impact on methanogenesis and biogas production from municipal solid waste. WASTE MANAGEMENT (NEW YORK, N.Y.) 2012; 32:816-825. [PMID: 22317796 DOI: 10.1016/j.wasman.2012.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 12/19/2011] [Accepted: 01/10/2012] [Indexed: 05/31/2023]
Abstract
Silver nanoparticles (AgNPs, nanosilver) released from industrial activities and consumer products may be disposed directly or indirectly in sanitary landfills. To determine the impact of AgNPs on anaerobic digestion of landfill waste, municipal solid waste (MSW) was loaded in identical landfill bioreactors (9L volume each) and exposed to AgNPs (average particle size=21nm) at the final concentrations of 0, 1, and 10mgAg/kg solids. The landfill anaerobic digestion was carried out for more than 250 days, during which time the cumulative biogas production was recorded automatically and the chemical property changes of leachates were analyzed. There were no significant differences in the cumulative biogas volume or gas production rate between the groups of control and 1mgAg/kg. However, landfill solids exposed to AgNPs at 10mg/kg resulted in the reduced biogas production, the accumulation of volatile fatty acids (including acetic acid), and the prolonged period of low leachate pH (between 5 and 6). Quantitative PCR results after day 100 indicated that the total copy numbers of 16S rRNA gene of methanogens in the groups of control and 1mgAgNPs/kg were 1.97±0.21×10(7) and 0.90±0.03×10(7), respectively. These numbers were significantly reduced to 5.79±2.83×10(5)(copies/mL) in the bioreactor treated with 10mgAgNPs/kg. The results suggest that AgNPs at the concentration of 1mg/kg solids have minimal impact on landfill anaerobic digestion, but a concentration at 10mg/kg or higher inhibit methanogenesis and biogas production from MSW.
Collapse
Affiliation(s)
- Yu Yang
- Department of Civil and Environmental Engineering, University of Missouri, MO 65211, USA
| | | | | | | |
Collapse
|
24
|
Procházka J, Dolejš P, Máca J, Dohányos M. Stability and inhibition of anaerobic processes caused by insufficiency or excess of ammonia nitrogen. Appl Microbiol Biotechnol 2011; 93:439-47. [DOI: 10.1007/s00253-011-3625-4] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 09/12/2011] [Accepted: 09/30/2011] [Indexed: 11/25/2022]
|
25
|
Vich DV, Garcia ML, Varesche MBA. Methanogenic potential and microbial community of anaerobic batch reactors at different ethylamine/sulfate ratios. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2011. [DOI: 10.1590/s0104-66322011000100001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | - M. L. Garcia
- Universidade Estadual Paulista Julio de Mesquita Filho, Brasil
| | | |
Collapse
|
26
|
Cui P, Zhou X, Zhang Y. The Feasibility Study of Cotton Pulp Wastewater Treatment with IC Anaerobic Reactor. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.proenv.2011.12.107] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Tang CJ, Zheng P, Mahmood Q, Chen JW. Effect of substrate concentration on stability of anammox biofilm reactors. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s11771-010-0014-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
28
|
Biofilm growth kinetics of a monomethylamine producing Alphaproteobacteria strain isolated from an anaerobic reactor. Anaerobe 2010; 16:19-26. [DOI: 10.1016/j.anaerobe.2009.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Revised: 04/23/2009] [Accepted: 04/29/2009] [Indexed: 11/17/2022]
|
29
|
Milan Z, Montalvo S, Ilangovan K, Monroy O, Chamy R, Weiland P, Sanchez E, Borja R. The impact of ammonia nitrogen concentration and zeolite addition on the specific methanogenic activity of granular and flocculent anaerobic sludges. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2010; 45:883-889. [PMID: 20419585 DOI: 10.1080/10934521003709099] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This work presents the effect of ammonia nitrogen concentration and zeolite addition on the specific methanogenic activity (SMA) of different anaerobic sludges with various physical structures (granular and flocculent), operating in batch conditions. Piggery, malting production and urban sludges derived from full-scale anaerobic reactors were tested in the experiment as the source of inoculum in batch digesters. It was found that piggery sludge was the most affected by the increase of ammonia nitrogen concentration while malting producing and municipal sludges were less affected. In general, the addition of zeolite at doses in the range of 0.01-0.1 g/g VSS reduced the inhibitory effect of N-NH(4)(+) for piggery sludge (P.S.). For this sludge, the propionic:acetic ratio increased when the concentration of N-NH(4)(+) increased, indicating that methanogenesis was affected. Finally, a study of the microbial population involved in this study for P.S. by using 16S rRNA based molecular techniques revealed a presence of microorganisms following the order: Methanococcaceae > Methanosarcina > Methanosaeta.
Collapse
Affiliation(s)
- Z Milan
- Laboratorio de Biotecnologia Ambiental, Pontificia Universidad Catolica de Valparaiso, Valaparaiso, Chile
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Chen S, Sun D, Chung JS. Anaerobic treatment of highly concentrated aniline wastewater using packed-bed biofilm reactor. Process Biochem 2007. [DOI: 10.1016/j.procbio.2007.09.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
31
|
Hafner SD, Bisogni JJ, Jewell WJ. Measurement of un-ionized ammonia in complex mixtures. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2006; 40:1597-602. [PMID: 16568775 DOI: 10.1021/es051638j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The toxicity of un-ionized ammonia, NH3 (aq), in anaerobic digestion of high-nitrogen wastes has been researched extensively. Previous estimates of NH3 (aq) concentration have relied on a simple speciation approach, based only on the acid dissociation constant and the sample pH and total ammonia concentration. The distinction between concentration and chemical activity has generally not been made, despite the potential for resulting errors in the calculation of NH3 (aq) concentration, and the greater applicability of activity to toxicity work. The currently accepted approach for estimating NH3 (aq) concentration is based on assumptions that are not valid in digested animal manure or other concentrated wastes. This work presents an approach for directly measuring NH3 (aq) activity in complex mixtures using gaseous/aqueous equilibrium across microporous tubing. Application of this approach to anaerobic digester samples confirms that the currently accepted approach is not accurate; it overestimated NH3 (aq) activity in unaltered samples by 45-200%. Previous work on the toxicity of ammonia to methanogenesis has probably overestimated the tolerance of consortia to NH3 (aq), due to overestimation of concentrations. The method introduced here is expected to be useful in a range of research on ammonia toxicity and volatilization.
Collapse
Affiliation(s)
- Sasha D Hafner
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, USA.
| | | | | |
Collapse
|
32
|
Hao X, Larney FJ, Chang C, Travis GR, Nichol CK, Bremer E. The effect of phosphogypsum on greenhouse gas emissions during cattle manure composting. JOURNAL OF ENVIRONMENTAL QUALITY 2005; 34:774-781. [PMID: 15843640 DOI: 10.2134/jeq2004.0388] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Phosphogypsum (PG), a by-product of the phosphate fertilizer industry, reduces N losses when added to composting livestock manure, but its impact on greenhouse gas emissions is unclear. The objective of this research was to assess the effects of PG addition on greenhouse gas emissions during cattle feedlot manure composting. Sand was used as a filler material for comparison. The seven treatments were PG10, PG20, PG30, S10, S20, and S30, representing the rate of PG or sand addition at 10, 20, or 30% of manure dry weight and a check treatment (no PG or sand) with three replications. The manure treatments were composted in open windrows and turned five times during a 134-d period. Addition of PG significantly increased electrical conductivity (EC) and decreased pH in the final compost. Total carbon (TC), total nitrogen (TN), and mineral nitrogen contents in the final composted product were not affected by the addition of PG or sand. From 40 to 54% of initial TC was lost during composting, mostly as CO(2), with CH(4) accounting for <14%. The addition of PG significantly reduced CH(4) emissions, which decreased exponentially with the compost total sulfur (TS) content. The emission of N(2)O accounted for <0.2% of initial TN in the manure, increasing as compost pH decreased from alkaline to near neutral. Based on the total greenhouse gas budget, PG addition reduced greenhouse gas emissions (CO(2)-C equivalent) during composting of livestock manure by at least 58%, primarily due to reduced CH(4) emission.
Collapse
Affiliation(s)
- Xiying Hao
- Agriculture and Agri-Food Canada, Lethbridge Research Centre, 5403 1st Avenue South, Lethbridge, AB, Canada T1J 4B1.
| | | | | | | | | | | |
Collapse
|