1
|
Emetere ME, Chikwendu L, Afolalu SA. Improved Biogas Production from Human Excreta Using Chicken Feather Powder: A Sustainable Option to Eradicating Poverty. GLOBAL CHALLENGES (HOBOKEN, NJ) 2022; 6:2100117. [PMID: 35712022 PMCID: PMC9189137 DOI: 10.1002/gch2.202100117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/08/2022] [Indexed: 06/15/2023]
Abstract
It has been proposed that providing energy for cooking and lighting would solve over 65% of energy needs in rural communities. The use of biomass resources has been found not sustainable as other bioproducts such as biodiesel and bioethanol depend on it. More so that there is a depletion of bioresources in some parts of the world. The shift into animal waste such as poultry droppings and cattle dung has huge prospects, but it is not sustainable in the long term as rural farmers depend on it. The use of human excreta is the most available and sustainable due to the human population. This research aims to provide a workable blueprint of biogas production to meet energy needs. The research considers a laboratory-scale experiment whose result is used to project the medium-scale biodigester. Microbial culturing from human waste is used to initiate the codigestion of human excreta and powdered chicken feathers. It is observed that this procedure drastically reduces the high nitrogen content in the biogas and improves its methane and carbon dioxide content. It is observed that the scaled-up biodigester in a worst case scenario can function at 67%. Design parameters are documented for the onward adoption of the technique.
Collapse
Affiliation(s)
- Moses E. Emetere
- Department of Mechanical Engineering ScienceUniversity of JohannesburgJohannesburg2006South Africa
| | - L. Chikwendu
- Department of PhysicsCovenant University Canaan landOtaPMB 1023Nigeria
| | - S. A. Afolalu
- Department of Mechanical EngineeringAfe Babalola UniversityAdo Ekiti360102Nigeria
| |
Collapse
|
2
|
Li X, Wu M, Xue Y. Nickel-loaded shrimp shell biochar enhances batch anaerobic digestion of food waste. BIORESOURCE TECHNOLOGY 2022; 352:127092. [PMID: 35367323 DOI: 10.1016/j.biortech.2022.127092] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
This study evaluated the effectiveness of shrimp shell biochar (SBC) and nickel (Ni) loaded SBC in increasing methane yield during anaerobic digestion of food waste. The results indicated that the methane yields of control (without SBC), SBC, SBC loaded with the low concentration of Ni, and SBC loaded with the high concentration of Ni were 81.8, 116.1, 134.7, and 99.2 mL/(g·VS), respectively. SBC promoted the efficiency and stability of the whole anaerobic digestion process including hydrolysis, volatile fatty acid conversion and methanogenesis. While the invigorating effect of loaded Ni at the low concentration of 0.88 mg/g was mainly concentrated in methanogenesis, the inhibition effect of the high Ni concentration was comprehensive. SBC helped Methanosarcina proliferation, and low concentration Ni promoted the number and activity of Methanosarcina and Methanosaeta. The results show that biochar loaded with a low level of trace elements such as Ni can promote the anaerobic digestion process.
Collapse
Affiliation(s)
- Xiao Li
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Mingxuan Wu
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Yingwen Xue
- School of Civil Engineering, Wuhan University, Wuhan, China.
| |
Collapse
|
3
|
Paulo LM, Hidayat MR, Moretti G, Stams AJM, Sousa DZ. Effect of nickel, cobalt, and iron on methanogenesis from methanol and cometabolic conversion of 1,2-dichloroethene by Methanosarcina barkeri. Biotechnol Appl Biochem 2020; 67:744-750. [PMID: 32282086 PMCID: PMC7687089 DOI: 10.1002/bab.1925] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 03/17/2020] [Indexed: 01/28/2023]
Abstract
Methanogens are responsible for the last step in anaerobic digestion (AD), in which methane (a biofuel) is produced. Some methanogens can cometabolize chlorinated pollutants, contributing for their removal during AD. Methanogenic cofactors involved in cometabolic reductive dechlorination, such as F430 and cobalamin, contain metal ions (nickel, cobalt, iron) in their structure. We hypothesized that the supplementation of trace metals could improve methane production and the cometabolic dechlorination of 1,2‐dichloroethene (DCE) by pure cultures of Methanosarcina barkeri. Nickel, cobalt, and iron were added to cultures of M. barkeri growing on methanol and methanol plus DCE. Metal amendment improved DCE dechlorination to vinyl chloride (VC): assays with 20 µM of Fe3+ showed the highest final concentration of VC (5× higher than in controls without Fe3+), but also in assays with 5.5 µM of Co2+ and 5 µM of Ni2+ VC formation was improved (3.5–4× higher than in controls without the respective metals). Dosing of metals could be useful to improve anaerobic removal of chlorinated compounds, and more importantly decrease the detrimental effect of DCE on methane production in anaerobic digesters.
Collapse
Affiliation(s)
- Lara M Paulo
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
| | - Mohamad R Hidayat
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
| | - Giulio Moretti
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands.,Laboratory of Microbiology, MESVA Department, University of L'Aquila, Via Vetoio Coppito (AQ), Italy
| | - Alfons J M Stams
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
| | - Diana Z Sousa
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
| |
Collapse
|
4
|
Hassaan MA, Pantaleo A, Tedone L, Elkatory MR, Ali RM, Nemr AE, Mastro GD. Enhancement of biogas production via green ZnO nanoparticles: experimental results of selected herbaceous crops. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1705797] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Mohamed A. Hassaan
- Marine Pollution Lab, National Institute of Oceanography and Fisheries, Alexandria, Egypt
- Agriculture and Environmental Sciences Department, Bari University, Bari, Italia
| | - Antonio Pantaleo
- Agriculture and Environmental Sciences Department, Bari University, Bari, Italia
| | - Luigi Tedone
- Agriculture and Environmental Sciences Department, Bari University, Bari, Italia
| | - Marwa R. Elkatory
- Advanced Technology and New Materials Research Institute (ATNMRI), City for Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Rehab M. Ali
- Fabrication Technology Department, Advanced Technology and New Materials and Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Ahmed El Nemr
- Marine Pollution Lab, National Institute of Oceanography and Fisheries, Alexandria, Egypt
| | - Giuseppe De Mastro
- Agriculture and Environmental Sciences Department, Bari University, Bari, Italia
| |
Collapse
|
5
|
Wang J, Westerholm M, Qiao W, Mahdy A, Wandera SM, Yin D, Bi S, Fan R, Dong R. Enhancing anaerobic digestion of dairy and swine wastewater by adding trace elements: evaluation in batch and continuous experiments. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:1662-1672. [PMID: 32039898 DOI: 10.2166/wst.2019.420] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Trace elements play a critical role for microbial activity in anaerobic digestion (AD) but their effects were probably overestimated in batch tests and should be comparably evaluated in continuous systems. In this study, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+ were added in different concentrations to manure wastewater, and the effects were compared in both batch and continuous systems. The results were used to demonstrate suitable trace element compositions for AD of dairy and swine wastewater, and to compare the outcomes from batch and continuous systems. Fe2+ and Zn2+ were identified as being the most efficient stimulant of dairy and swine wastewater respectively. The addition of 5 mg/L Fe2+ and 0.4 mg/L Zn2+ increased the batch specific methane yield by 62% and 126% for dairy and swine wastewater, respectively. Nevertheless, a lower increment of 2% and 21%, for dairy and swine wastewater was obtained in the 120-day continuously-fed experiments. The 16S rRNA gene sequencing results indicated a relationship between the methanogens population, specific methanogenic activities, propionate, and dissolved hydrogen. Conclusively, the addition of a low dosage of Fe2+ and Zn2+ is a feasible strategy to enhance the methanogenic metabolism of the AD of dairy and swine wastewater respectively.
Collapse
Affiliation(s)
- Jing Wang
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| | - Maria Westerholm
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala BioCenter, Box 7025, SE-750 07 Uppsala, Sweden
| | - Wei Qiao
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| | - Ahmed Mahdy
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, 44511 Zagazig, Egypt
| | - Simon M Wandera
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| | - Dongmin Yin
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| | - Shaojie Bi
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| | - Run Fan
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| | - Renjie Dong
- College of Engineering, China Agricultural University, Beijing 100083, China E-mail: ; R&D Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee (BG Fuels), Beijing 100083, China
| |
Collapse
|
6
|
Laera A, Shakeri Yekta S, Hedenström M, Buzier R, Guibaud G, Dario M, Esposito G, van Hullebusch ED. A simultaneous assessment of organic matter and trace elements bio-accessibility in substrate and digestate from an anaerobic digestion plant. BIORESOURCE TECHNOLOGY 2019; 288:121587. [PMID: 31200348 DOI: 10.1016/j.biortech.2019.121587] [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: 03/23/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 06/09/2023]
Abstract
This study evaluates a simultaneous assessment of organic matter (OM) and trace elements (TE) bio-accessibility in substrate and digestate from a full-scale anaerobic digester by a sequential OM extraction method. Simultaneous release of TE was determined along with the extraction of different OM fractions and the effects of extracting reagents on characteristics of OM were evaluated by nuclear magnetic resonance (NMR) spectroscopy. The reagents used for sequential extraction of OM were not enough selective. However, proteins were particularly removed by 0.1 M NaOH, while 72% H2SO4 mainly extracted hemicellulose and cellulose. The OM fractionation allowed for simultaneous extraction of >60% of total As, Cd, Co, Fe, Mn, Ni and Zn, while the extraction was limited for Al, Cr, Cu, Mo, and Pb. In substrate, >50% of total As, Co, Mn and Ni and <40% of total Fe, Zn and Mo were identified in bio-accessible fractions. In digestate, all elements demonstrated poor bio-accessibility except for As.
Collapse
Affiliation(s)
- Andreina Laera
- University of Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454 Marne-la-Vallée, France; University of Limoges, PEIRENE, Equipe Développement d'indicateurs ou prévision de la qualité des eaux, URA IRSTEA, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France.
| | - Sepehr Shakeri Yekta
- Department of Thematic Studies-Environmental Change and Biogas Research Center, Linköping University, 581 83 Linköping, Sweden
| | | | - Rémy Buzier
- University of Limoges, PEIRENE, Equipe Développement d'indicateurs ou prévision de la qualité des eaux, URA IRSTEA, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Gilles Guibaud
- University of Limoges, PEIRENE, Equipe Développement d'indicateurs ou prévision de la qualité des eaux, URA IRSTEA, 123 Avenue Albert Thomas, 87060 Limoges Cedex, France
| | - Mårten Dario
- Department of Thematic Studies-Environmental Change and Biogas Research Center, Linköping University, 581 83 Linköping, Sweden
| | - Giovanni Esposito
- University of Napoli "Federico II", Department of Civil, Architectural and Environmental Engineering, via Claudio 21, 80125 Napoli, Italy
| | - Eric D van Hullebusch
- Université de Paris, Institut de Physique du Globe de Paris, CNRS, UMR 7154, F-75238 Paris, France
| |
Collapse
|
7
|
Cao W, Wang M, Liu M, Zhang Z, Sun Z, Miao Y, Sun C, Hu C. The chemical and dynamic distribution characteristics of iron, cobalt and nickel in three different anaerobic digestates: Effect of pH and trace elements dosage. BIORESOURCE TECHNOLOGY 2018; 269:363-374. [PMID: 30199774 DOI: 10.1016/j.biortech.2018.08.094] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/19/2018] [Accepted: 08/20/2018] [Indexed: 06/08/2023]
Abstract
The enhancement of the bioavailability and process controllability of trace elements (TEs) addition is of significance to improve the anaerobic digestion (AD) performance. In order to understand the bioavailability of TEs, the chemical form distribution patterns of endogenous/exogenous Fe, Ni and Co with different dosage (Fe: 1, 10 and 100 mg/kg; Ni and Co: 0.1, 1 and 10 mg/kg) and different pH condition (6.5; 7.5 and 8.5) were investigated in three different anaerobic digestates. The results showed that the exogenous TEs dosage exerted no obvious effects on the TEs distribution patterns. The chemical fractionation of TEs was more affected by pH, redox potential, AD process and digestate resource. Under pH 6.5 and with redox potential rising, the acid-extractable and reducible fractions and of Fe, Ni and Co were increased while the oxidizable fractions were decreased, which enhanced the bioavailability of TEs.
Collapse
Affiliation(s)
- Weixing Cao
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| | - Mimi Wang
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| | - Mengmeng Liu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| | - Zhining Zhang
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| | - Zixiang Sun
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| | - Yang Miao
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| | - Chen Sun
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China.
| | - Changwei Hu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Zhejiang Province, Jiaxing 314001, China
| |
Collapse
|
8
|
Serrano A, Pinto-Ibieta F, Braga AFM, Jeison D, Borja R, Fermoso FG. Risks of using EDTA as an agent for trace metals dosing in anaerobic digestion of olive mill solid waste. ENVIRONMENTAL TECHNOLOGY 2017; 38:3137-3144. [PMID: 28151052 DOI: 10.1080/09593330.2017.1290149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Low concentrations of trace elements in many organic wastes recommend their supplementation in order to avoid potential limitations. Different chelating agents have been used to ensure an adequate trace metal pool in the soluble fraction, by forming dissolved complexes. Ethylenediaminetetraacetic acid (EDTA) is probably the most common, although several negative effects could be associated with its usage. Biomethane potential tests were performed using Olive Mill Solid Waste as the substrate, supplementing different combinations of Fe, Co, Ni, Ba, always under the presence of EDTA. Results show that Ni and Co slightly recovered biodegradability. However, Ba supplementation resulted in worsening the methane yield coefficient in all cases. High concentration of EDTA led to decrease in the activity of anaerobic digestion. High availability of EDTA induces the capture of trace metals like Co or Ni, key trace metals for anaerobic biomass activity. While supplementing trace metals, the addition of Ba and/or EDTA must be carefully considered.
Collapse
Affiliation(s)
- A Serrano
- a Instituto de la Grasa (C.S.I.C.), Edificio 46 , Campus Universitario Pablo de Olavide , Sevilla , Spain
| | - F Pinto-Ibieta
- b Master of Engineering Sciences with Specialization in Biotechnology , Universidad de La Frontera , Temuco , Chile
- c Escuela de Procesos Industriales, Facultad de Ingeniería , Universidad Católica de Temuco , Temuco , Chile
| | - A F M Braga
- d Biological Processes Laboratory, Center for Research, Development and Innovation in Environmental Engineering, São Carlos School of Engineering (EESC) , University of São Paulo (USP) , São Carlos , Brazil
| | - D Jeison
- e Department of Chemical Engineering , Universidad de La Frontera , Temuco , Chile
| | - R Borja
- a Instituto de la Grasa (C.S.I.C.), Edificio 46 , Campus Universitario Pablo de Olavide , Sevilla , Spain
| | - F G Fermoso
- a Instituto de la Grasa (C.S.I.C.), Edificio 46 , Campus Universitario Pablo de Olavide , Sevilla , Spain
| |
Collapse
|
9
|
Paulo LM, Ramiro-Garcia J, van Mourik S, Stams AJM, Sousa DZ. Effect of Nickel and Cobalt on Methanogenic Enrichment Cultures and Role of Biogenic Sulfide in Metal Toxicity Attenuation. Front Microbiol 2017; 8:1341. [PMID: 28769906 PMCID: PMC5513950 DOI: 10.3389/fmicb.2017.01341] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 07/03/2017] [Indexed: 11/13/2022] Open
Abstract
Metals play an important role in microbial metabolism by acting as cofactors for many enzymes. Supplementation of biological processes with metals may result in improved performance, but high metal concentrations are often toxic to microorganisms. In this work, methanogenic enrichment cultures growing on H2/CO2 or acetate were supplemented with trace concentrations of nickel (Ni) and cobalt (Co), but no significant increase in methane production was observed in most of the tested conditions. However, high concentrations of these metals were detrimental to methanogenic activity of the cultures. Cumulative methane production (after 6 days of incubation) from H2/CO2 was 40% lower in the presence of 8 mM of Ni or 30 mM of Co, compared to controls without metal supplementation. When acetate was used as substrate, cumulative methane production was also reduced: by 18% with 8 mM of Ni and by 53% with 30 mM of Co (after 6 days of incubation). Metal precipitation with sulfide was further tested as a possible method to alleviate metal toxicity. Anaerobic sludge was incubated with Co (30 mM) and Ni (8 mM) in the presence of sulfate or sulfide. The addition of sulfide helped to mitigate the toxic effect of the metals. Methane production from H2/CO2 was negatively affected in the presence of sulfate, possibly due to competition of hydrogenotrophic methanogens by sulfate-reducing bacteria. However, in the enrichment cultures growing on acetate, biogenically produced sulfide had a positive effect and more methane was produced in these incubations than in similar assays without sulfate addition. The outcome of competition between methanogens and sulfate-reducing bacteria is a determinant factor for the success of using biogenic sulfide as detoxification method.
Collapse
Affiliation(s)
- Lara M. Paulo
- Laboratory of Microbiology, Wageningen UniversityWageningen, Netherlands
| | | | - Simon van Mourik
- Farm Technology Group, Plant Sciences GroupWageningen, Netherlands
| | - Alfons J. M. Stams
- Laboratory of Microbiology, Wageningen UniversityWageningen, Netherlands
- Centre of Biological Engineering, University of Minho, Campus de GualtarBraga, Portugal
| | - Diana Z. Sousa
- Laboratory of Microbiology, Wageningen UniversityWageningen, Netherlands
| |
Collapse
|
10
|
Yekta SS, Skyllberg U, Danielsson Å, Björn A, Svensson BH. Chemical speciation of sulfur and metals in biogas reactors - Implications for cobalt and nickel bio-uptake processes. JOURNAL OF HAZARDOUS MATERIALS 2017; 324:110-116. [PMID: 26777110 DOI: 10.1016/j.jhazmat.2015.12.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 12/14/2015] [Accepted: 12/28/2015] [Indexed: 06/05/2023]
Abstract
This article deals with the interrelationship between overall chemical speciation of S, Fe, Co, and Ni in relation to metals bio-uptake processes in continuous stirred tank biogas reactors (CSTBR). To address this topic, laboratory CSTBRs digesting sulfur(S)-rich stillage, as well as full-scale CSTBRs treating sewage sludge and various combinations of organic wastes, termed co-digestion, were targeted. Sulfur speciation was evaluated using acid volatile sulfide extraction and X-ray absorption spectroscopy. Metal speciation was evaluated by chemical fractionation, kinetic and thermodynamic analyses. Relative Fe to S content is identified as a critical factor for chemical speciation and bio-uptake of metals. In reactors treating sewage sludge, quantity of Fe exceeds that of S, inducing Fe-dominated conditions, while sulfide dominates in laboratory and co-digestion reactors due to an excess of S over Fe. Under sulfide-dominated conditions, metals availability for microorganisms is restricted due to formation of metal-sulfide precipitates. However, aqueous concentrations of different Co and Ni species were shown to be sufficient to support metal acquisition by microorganisms under sulfidic conditions. Concentrations of free metal ions and labile metal complexes in aqueous phase, which directly participate in bio-uptake processes, are higher under Fe-dominated conditions. This in turn enhances metal adsorption on cell surfaces and bio-uptake rates.
Collapse
Affiliation(s)
- Sepehr Shakeri Yekta
- Department of Thematic Studies-Environmental Change, Linköping University, SE-581 83 Linköping, Sweden.
| | - Ulf Skyllberg
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Åsa Danielsson
- Department of Thematic Studies-Environmental Change, Linköping University, SE-581 83 Linköping, Sweden
| | - Annika Björn
- Department of Thematic Studies-Environmental Change, Linköping University, SE-581 83 Linköping, Sweden
| | - Bo H Svensson
- Department of Thematic Studies-Environmental Change, Linköping University, SE-581 83 Linköping, Sweden
| |
Collapse
|
11
|
Wintsche B, Glaser K, Sträuber H, Centler F, Liebetrau J, Harms H, Kleinsteuber S. Trace Elements Induce Predominance among Methanogenic Activity in Anaerobic Digestion. Front Microbiol 2016; 7:2034. [PMID: 28018337 PMCID: PMC5160323 DOI: 10.3389/fmicb.2016.02034] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 12/02/2016] [Indexed: 11/30/2022] Open
Abstract
Trace elements (TE) play an essential role in all organisms due to their functions in enzyme complexes. In anaerobic digesters, control, and supplementation of TEs lead to stable and more efficient methane production processes while TE deficits cause process imbalances. However, the underlying metabolic mechanisms and the adaptation of the affected microbial communities to such deficits are not yet fully understood. Here, we investigated the microbial community dynamics and resulting process changes induced by TE deprivation. Two identical lab-scale continuous stirred tank reactors fed with distiller’s grains and supplemented with TEs (cobalt, molybdenum, nickel, tungsten) and a commercial iron additive were operated in parallel. After 72 weeks of identical operation, the feeding regime of one reactor was changed by omitting TE supplements and reducing the amount of iron additive. Both reactors were operated for further 21 weeks. Various process parameters (biogas production and composition, total solids and volatile solids, TE concentration, volatile fatty acids, total ammonium nitrogen, total organic acids/alkalinity ratio, and pH) and the composition and activity of the microbial communities were monitored over the total experimental time. While the methane yield remained stable, the concentrations of hydrogen sulfide, total ammonia nitrogen, and acetate increased in the TE-depleted reactor compared to the well-supplied control reactor. Methanosarcina and Methanoculleus dominated the methanogenic communities in both reactors. However, the activity ratio of these two genera was shown to depend on TE supplementation explainable by different TE requirements of their energy conservation systems. Methanosarcina dominated the well-supplied anaerobic digester, pointing to acetoclastic methanogenesis as the dominant methanogenic pathway. Under TE deprivation, Methanoculleus and thus hydrogenotrophic methanogenesis was favored although Methanosarcina was not overgrown by Methanoculleus. Multivariate statistics revealed that the decline of nickel, cobalt, molybdenum, tungsten, and manganese most strongly influenced the balance of mcrA transcripts from both genera. Hydrogenotrophic methanogens seem to be favored under nickel- and cobalt-deficient conditions as their metabolism requires less nickel-dependent enzymes and corrinoid cofactors than the acetoclastic and methylotrophic pathways. Thus, TE supply is critical to sustain the activity of the versatile high-performance methanogen Methanosarcina.
Collapse
Affiliation(s)
- Babett Wintsche
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ Leipzig, Germany
| | - Karin Glaser
- Department of Applied Ecology and Phycology, University of Rostock Rostock, Germany
| | - Heike Sträuber
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ Leipzig, Germany
| | - Florian Centler
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ Leipzig, Germany
| | - Jan Liebetrau
- Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum - DBFZ Leipzig, Germany
| | - Hauke Harms
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZLeipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv)Leipzig, Germany
| | - Sabine Kleinsteuber
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research - UFZ Leipzig, Germany
| |
Collapse
|
12
|
Weiß S, Somitsch W, Klymiuk I, Trajanoski S, Guebitz GM. Comparison of biogas sludge and raw crop material as source of hydrolytic cultures for anaerobic digestion. BIORESOURCE TECHNOLOGY 2016; 207:244-251. [PMID: 26894564 DOI: 10.1016/j.biortech.2016.01.137] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/29/2016] [Accepted: 01/31/2016] [Indexed: 06/05/2023]
Abstract
Mixed fermentative/hydrolytic bacteria were enriched on lignocellulose substrates in minimal medium under semi-anaerobic mesophilic conditions in the presence or absence of natural zeolite as growth supporter to ultimately bioaugment non-adapted sludge and thereby enhance the overall anaerobic digestion (AD) of recalcitrant plant material. Desired enzyme activities, i.e. xylanases and cellulase were monitored during subsequent cultivation cycles. Furthermore, enriched microbial communities were characterized by 16S rRNA-based 454-Pyrosequencing, revealing Firmicutes, Bacteriodetes, Proteobacteria and Spirochaetes to be the predominant bacterial groups in cultures derived from anaerobic sludge and raw crop material, i.e. maple green cut and wheat straw as well. Enriched populations relevant for biopolymer hydrolysis were then compared in biological methane potential tests to demonstrate positive effects on the biogasification of renewable plant substrate material. A significant impact on methane productivity was observed with adapted mixed cultures when used in combination with clinoptilolite to augment and supplement non-adapted bioreactor sludge.
Collapse
Affiliation(s)
- Stefan Weiß
- Austrian Centre of Industrial Biotechnology, Petersgasse 14/5, A-8010 Graz, Austria.
| | - Walter Somitsch
- Engineering Consultant, Wiedner Hauptstrasse 90/2/19, A-1050 Vienna, Austria; IPUS Mineral- und Umwelttechnologie GmbH, Werksgasse 281, A-8786 Rottenmann, Austria
| | - Ingeborg Klymiuk
- Medical University of Graz, Centre for Medical Research, Core Facility Molecular Biology, Stiftingtalstraße 24, A-8010 Graz, Austria
| | - Slave Trajanoski
- Medical University of Graz, Centre for Medical Research, Core Facility Computational Bioanalytics, Bioinformatics, Stiftingtalstraße 24, A-8010 Graz, Austria
| | - Georg M Guebitz
- Austrian Centre of Industrial Biotechnology, Petersgasse 14/5, A-8010 Graz, Austria; University of Natural Resources and Life Sciences, Institute of Environmental Biotechnology, Konrad Lorenz Strasse 20, A-3430 Tulln, Austria
| |
Collapse
|
13
|
Yu B, Zhang D, Dai X, Lou Z, Yuan H, Zhu N. The synthetic effect on volatile fatty acid disinhibition and methane production enhancement by dosing FeCl3in a sludge thermophilic anaerobic digestion system. RSC Adv 2016. [DOI: 10.1039/c5ra26245c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A dosage gradient of FeCl3was adopted and 9.92 mg Fe per g DS was favorable for the disinhibition of VFAs in sludge thermophilic digestion system.
Collapse
Affiliation(s)
- Bao Yu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Dongling Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Xiaohu Dai
- National Engineering Research Center for Urban Pollution Control
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P. R. China
| | - Ziyang Lou
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Haiping Yuan
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Nanwen Zhu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| |
Collapse
|
14
|
Protocol for Start-Up and Operation of CSTR Biogas Processes. SPRINGER PROTOCOLS HANDBOOKS 2016. [DOI: 10.1007/8623_2016_214] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
15
|
Nordell E, Nilsson B, Nilsson Påledal S, Karisalmi K, Moestedt J. Co-digestion of manure and industrial waste--The effects of trace element addition. WASTE MANAGEMENT (NEW YORK, N.Y.) 2016; 47:21-27. [PMID: 25812806 DOI: 10.1016/j.wasman.2015.02.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/17/2015] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
Manure is one of the most common substrates for biogas production. Manure from dairy- and swine animals are often considered to stabilize the biogas process by contributing nutrients and trace elements needed for the biogas process. In this study two lab-scale reactors were used to evaluate the effects of trace element addition during co-digestion of manure from swine- and dairy animals with industrial waste. The substrate used contained high background concentrations of both cobalt and nickel, which are considered to be the most important trace elements. In the reactor receiving additional trace elements, the volatile fatty acids (VFA) concentration was 89% lower than in the control reactor. The lower VFA concentration contributed to a more digested digestate, and thus lower methane emissions in the subsequent storage. Also, the biogas production rate increased with 24% and the biogas production yield with 10%, both as a result of the additional trace elements at high organic loading rates. All in all, even though 50% of the feedstock consisted of manure, trace element addition resulted in multiple positive effects and a more reliable process with stable and high yield.
Collapse
Affiliation(s)
- Erik Nordell
- Tekniska verken i Linköping AB (public), Dept. of Biogas R&D, Box 1500, SE-581 15 Linköping, Sweden.
| | - Britt Nilsson
- Kemira Kemi AB, Koppargatan 20, P.O. Box 902, SE-251 09 Helsingborg, Sweden
| | - Sören Nilsson Påledal
- Tekniska verken i Linköping AB (public), Dept. of Biogas R&D, Box 1500, SE-581 15 Linköping, Sweden
| | - Kaisa Karisalmi
- Kemira Oyj, Espoo R&D Center, Luoteisrinne 2, P.O. Box 44, FI-02270 Espoo, Finland
| | - Jan Moestedt
- Tekniska verken i Linköping AB (public), Dept. of Biogas R&D, Box 1500, SE-581 15 Linköping, Sweden; Department of Microbiology, Uppsala BioCenter, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden
| |
Collapse
|
16
|
Effects of Potassium, Magnesium, Zinc, and Manganese Addition on the Anaerobic Digestion of De-oiled Grease Trap Waste. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2015. [DOI: 10.1007/s13369-015-1879-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
17
|
Westerholm M, Müller B, Isaksson S, Schnürer A. Trace element and temperature effects on microbial communities and links to biogas digester performance at high ammonia levels. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:154. [PMID: 26396592 PMCID: PMC4578335 DOI: 10.1186/s13068-015-0328-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 08/26/2015] [Indexed: 05/02/2023]
Abstract
BACKGROUND High levels of ammonia and the presence of sulphide have major impacts on microbial communities and are known to cause operating problems in anaerobic degradation of protein-rich material. Operating strategies that can improve process performance in such conditions have been reported. The microbiological impacts of these are not fully understood, but their determination could help identify important factors for balanced, efficient operation. This study investigated the correlations between microbial community structure, operating parameters and digester performance in high-ammonia conditions. METHOD Continuous anaerobic co-digestion of household waste and albumin was carried out in laboratory-scale digesters at high ammonia concentrations (0.5-0.9 g NH3/L). The digesters operated for 320 days at 37 or 42 °C, with or without addition of a trace element mixture including iron (TE). Abundance and composition of syntrophic acetate-oxidising bacteria (SAOB) and of methanogenic and acetogenic communities were investigated throughout the study using 16S rRNA and functional gene-based molecular methods. RESULTS Syntrophic acetate oxidation dominated methane formation in all digesters, where a substantial enhancement in digester performance and influence on microbial community by addition of TE was shown dependent on temperature. At 37 °C, TE addition supported dominance and strain richness of Methanoculleus bourgensis and altered the acetogenic community, whereas the same supplementation at 42 °C had a low impact on microbial community structure. Both with and without TE addition operation at 42 °C instead of 37 °C had low impact on digester performance, but considerably restricted acetogenic and methanogenic community structure, evenness and richness. The abundance of known SAOB was higher in digesters without TE addition and in digesters operating at 42 °C. No synergistic effect on digester performance or microbial community structure was observed on combining increased temperature with TE addition. CONCLUSIONS Our identification of prominent populations related to enhanced performance within methanogenic (high dominance and richness of M. bourgensis) and acetogenic communities are valuable for continued research and engineering to improve methane production in high-ammonia conditions. We also show that a temperature increase of only 5 °C within the mesophilic range results in an extreme dominance of one or a few species within these communities, independent of TE addition. Furthermore, functional stable operation was possible despite low microbial temporal dynamics, evenness and richness at the higher temperature.
Collapse
Affiliation(s)
- Maria Westerholm
- Department of Microbiology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7025, 750 07 Uppsala, Sweden
| | - Bettina Müller
- Department of Microbiology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7025, 750 07 Uppsala, Sweden
| | - Simon Isaksson
- Department of Microbiology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7025, 750 07 Uppsala, Sweden
| | - Anna Schnürer
- Department of Microbiology, Uppsala BioCenter, Swedish University of Agricultural Sciences, Box 7025, 750 07 Uppsala, Sweden
| |
Collapse
|
18
|
Determination of Methane and Carbon Dioxide Formation Rate Constants for Semi-Continuously Fed Anaerobic Digesters. ENERGIES 2015. [DOI: 10.3390/en8010645] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
19
|
Schmidt T, Nelles M, Scholwin F, Pröter J. Trace element supplementation in the biogas production from wheat stillage--optimization of metal dosing. BIORESOURCE TECHNOLOGY 2014; 168:80-85. [PMID: 24666626 DOI: 10.1016/j.biortech.2014.02.124] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 02/24/2014] [Accepted: 02/26/2014] [Indexed: 06/03/2023]
Abstract
A trace element dosing strategy for the anaerobic digestion of wheat stillage was developed in this study. Mesophilic CSTR reactors were operated with the sulfuric substrate wheat stillage in some cases under trace element deficiency. After supplementing trace elements during the start-up, one of the elements of Fe, Ni, Co, Mo, and W were depleted in one digester while still augmenting the other elements to determine minimum requirements for each element. The depletion of Fe and Ni resulted in a rapid accumulation of volatile fatty acids while Co and W seem to have a long-term effect. Based on the results it was possible to reduce the dosing of trace elements, which is positive with reference to economic and environmental aspects.
Collapse
Affiliation(s)
- Thomas Schmidt
- Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Leipzig 04347, Germany; Faculty of Agricultural and Environmental Sciences, University of Rostock, Rostock 18059, Germany.
| | - Michael Nelles
- Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Leipzig 04347, Germany; Faculty of Agricultural and Environmental Sciences, University of Rostock, Rostock 18059, Germany
| | - Frank Scholwin
- Faculty of Agricultural and Environmental Sciences, University of Rostock, Rostock 18059, Germany
| | - Jürgen Pröter
- Department of Biochemical Conversion, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Leipzig 04347, Germany
| |
Collapse
|
20
|
Comparison of operating strategies for increased biogas production from thin stillage. J Biotechnol 2014; 175:22-30. [DOI: 10.1016/j.jbiotec.2014.01.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 01/27/2014] [Accepted: 01/29/2014] [Indexed: 11/19/2022]
|
21
|
Shakeri Yekta S, Lindmark A, Skyllberg U, Danielsson A, Svensson BH. Importance of reduced sulfur for the equilibrium chemistry and kinetics of Fe(II), Co(II) and Ni(II) supplemented to semi-continuous stirred tank biogas reactors fed with stillage. JOURNAL OF HAZARDOUS MATERIALS 2014; 269:83-88. [PMID: 24576559 DOI: 10.1016/j.jhazmat.2014.01.051] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 12/30/2013] [Accepted: 01/30/2014] [Indexed: 06/03/2023]
Abstract
The objective of the present study was to assess major chemical reactions and chemical forms contributing to solubility and speciation of Fe(II), Co(II), and Ni(II) during anaerobic digestion of sulfur (S)-rich stillage in semi-continuous stirred tank biogas reactors (SCSTR). These metals are essential supplements for efficient and stable performance of stillage-fed SCSTR. In particular, the influence of reduced inorganic and organic S species on kinetics and thermodynamics of the metals and their partitioning between aqueous and solid phases were investigated. Solid phase S speciation was determined by use of S K-edge X-ray absorption near-edge spectroscopy. Results demonstrated that the solubility and speciation of supplemented Fe were controlled by precipitation of FeS(s) and formation of the aqueous complexes of Fe-sulfide and Fe-thiol. The relatively high solubility of Co (∼ 20% of total Co content) was attributed to the formation of compounds other than Co-sulfide and Co-thiol, presumably of microbial origin. Nickel had lower solubility than Co and its speciation was regulated by interactions with FeS(s) (e.g. co-precipitation, adsorption, and ion substitution) in addition to precipitation/dissolution of discrete NiS(s) phase and formation of aqueous Ni-sulfide complexes.
Collapse
Affiliation(s)
- Sepehr Shakeri Yekta
- Department of Thematic Studies - Water and Environmental Studies, Linköping University, SE-581 83 Linköping, Sweden.
| | - Amanda Lindmark
- Department of Thematic Studies - Water and Environmental Studies, Linköping University, SE-581 83 Linköping, Sweden
| | - Ulf Skyllberg
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Asa Danielsson
- Department of Thematic Studies - Water and Environmental Studies, Linköping University, SE-581 83 Linköping, Sweden
| | - Bo H Svensson
- Department of Thematic Studies - Water and Environmental Studies, Linköping University, SE-581 83 Linköping, Sweden
| |
Collapse
|
22
|
Li J, Wei L, Duan Q, Hu G, Zhang G. Semi-continuous anaerobic co-digestion of dairy manure with three crop residues for biogas production. BIORESOURCE TECHNOLOGY 2014; 156:307-313. [PMID: 24525215 DOI: 10.1016/j.biortech.2014.01.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/13/2014] [Accepted: 01/15/2014] [Indexed: 06/03/2023]
Abstract
The characteristics of anaerobic semi-continuous co-digestion of dairy manure (DM) with three crop straw residues (SRs), rice straw, corn stalks and wheat straw under five mass mixing ratios (SRs/DM) were investigated. During the anaerobic digestion (AD) process, four periods were identified: startup, first stage of stabilization, second stage of stabilization, and suppression. Following the four periods, the biogas production rate varied between 101 and 576mL L(-1)d(-1). A high CH4 content and volatile solid reduction was maintained at the SRs/DM mass mixing ratio 1:9. The highest cumulative biogas production of more than 19L was obtained at ratio 5:5. However, ratio 9:1 performed worst in the whole process. Systematic analysis of the elements revealed nitrogen, phosphorus, and trace elements contents were important for the AD. Overall, the semi-continuous AD is efficient within a wide range of SRs/DM mass mixing ratios.
Collapse
Affiliation(s)
- Jiang Li
- Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China
| | - Luoyu Wei
- Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China
| | - Qiwu Duan
- Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China
| | - Guoquan Hu
- Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China
| | - Guozhi Zhang
- Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China.
| |
Collapse
|
23
|
Biogas Production from Thin Stillage on an Industrial Scale—Experience and Optimisation. ENERGIES 2013. [DOI: 10.3390/en6115642] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
24
|
Gustavsson J, Yekta SS, Karlsson A, Skyllberg U, Svensson BH. Potential bioavailability and chemical forms of Co and Ni in the biogas process-An evaluation based on sequential and acid volatile sulfide extractions. Eng Life Sci 2013. [DOI: 10.1002/elsc.201200162] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Jenny Gustavsson
- Department of Thematic Studies-Water and Environment; Linköping University; Linköping Sweden
| | - Sepehr Shakeri Yekta
- Department of Thematic Studies-Water and Environment; Linköping University; Linköping Sweden
| | | | - Ulf Skyllberg
- Department of Forest Ecology and Management; Swedish University of Agricultural Sciences; Umeå Sweden
| | - Bo H. Svensson
- Department of Thematic Studies-Water and Environment; Linköping University; Linköping Sweden
| |
Collapse
|
25
|
Barta Z, Kreuger E, Björnsson L. Effects of steam pretreatment and co-production with ethanol on the energy efficiency and process economics of combined biogas, heat and electricity production from industrial hemp. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:56. [PMID: 23607263 PMCID: PMC3651413 DOI: 10.1186/1754-6834-6-56] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 04/08/2013] [Indexed: 05/05/2023]
Abstract
BACKGROUND The study presented here has used the commercial flow sheeting program Aspen Plus™ to evaluate techno-economic aspects of large-scale hemp-based processes for producing transportation fuels. The co-production of biogas, district heat and power from chopped and steam-pretreated hemp, and the co-production of ethanol, biogas, heat and power from steam-pretreated hemp were analysed. The analyses include assessments of heat demand, energy efficiency and process economics in terms of annual cash flows and minimum biogas and ethanol selling prices (MBSP and MESP). RESULTS Producing biogas, heat and power from chopped hemp has the highest overall energy efficiency, 84% of the theoretical maximum (based on lower heating values), providing that the maximum capacity of district heat is delivered. The combined production of ethanol, biogas, heat and power has the highest energy efficiency (49%) if district heat is not produced. Neither the inclusion of steam pretreatment nor co-production with ethanol has a large impact on the MBSP. Ethanol is more expensive to produce than biogas is, but this is compensated for by its higher market price. None of the scenarios examined are economically viable, since the MBSP (EUR 103-128 per MWh) is higher than the market price of biogas (EUR 67 per MWh). The largest contribution to the cost is the cost of feedstock. Decreasing the retention time in the biogas process for low solids streams by partly replacing continuous stirred tank reactors by high-rate bioreactors decreases the MBSP. Also, recycling part of the liquid from the effluent from anaerobic digestion decreases the MBSP. The production and prices of methane and ethanol influence the process economics more than the production and prices of electricity and district heat. CONCLUSIONS To reduce the production cost of ethanol and biogas from biomass, the use of feedstocks that are cheaper than hemp, give higher output of ethanol and biogas, or combined production with higher value products are primarily suggested. Further, practical investigations on increased substrate concentration in biogas and ethanol production, recycling of the liquid in anaerobic digestion and separation of low solids flows into solid and a liquid fraction for improved reactor applications deserves further attention.
Collapse
Affiliation(s)
- Zsolt Barta
- Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szt. Gellérttér 4, Budapest, H-1111, Hungary
| | - Emma Kreuger
- Biotechnology, Lund University, P.O. Box 124, Lund, SE-221 00, Sweden
| | - Lovisa Björnsson
- Biotechnology, Lund University, P.O. Box 124, Lund, SE-221 00, Sweden
- Environmental and Energy Systems Studies, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden
| |
Collapse
|
26
|
Facchin V, Cavinato C, Fatone F, Pavan P, Cecchi F, Bolzonella D. Effect of trace element supplementation on the mesophilic anaerobic digestion of foodwaste in batch trials: The influence of inoculum origin. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2012.10.004] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
27
|
Yekta SS, Gonsior M, Schmitt-Kopplin P, Svensson BH. Characterization of dissolved organic matter in full scale continuous stirred tank biogas reactors using ultrahigh resolution mass spectrometry: a qualitative overview. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:12711-12719. [PMID: 23110574 DOI: 10.1021/es3024447] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Dissolved organic matter (DOM) was characterized in eight full scale continuous stirred tank biogas reactors (CSTBR) using solid-phase extraction and electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI-FT-ICR-MS). An overview of the DOM molecular complexity in the samples from biogas reactors with conventional operational conditions and various substrate profiles is provided by assignments of unambiguous exact molecular formulas for each measured mass peak. Analysis of triplicate samples for each reactor demonstrated the reproducibility of the solid-phase extraction procedure and ESI-FT-ICR-MS which allowed precise evaluation of the DOM molecular differences among the different reactors. Cluster analysis on mass spectrometric data set showed that the biogas reactors treating sewage sludge had distinctly different DOM characteristics compared to the codigesters treating a combination of organic wastes. Furthermore, the samples from thermophilic and mesophilic codigesters had different DOM composition in terms of identified masses and corresponding intensities. Despite the differences, the results demonstrated that compositionally linked organic compounds comprising 28-59% of the total number of assigned formulas for the samples were shared in all the reactors. This suggested that the shared assigned formulas in studied CSTBRs might be related to common biochemical transformation in anaerobic digestion process and therefore, performance of the CSTBRs.
Collapse
Affiliation(s)
- Sepehr Shakeri Yekta
- Department of Thematic Studies - Water and Environment, Linköping University, SE-581 83 Linköping, Sweden.
| | | | | | | |
Collapse
|
28
|
Westerholm M, Hansson M, Schnürer A. Improved biogas production from whole stillage by co-digestion with cattle manure. BIORESOURCE TECHNOLOGY 2012; 114:314-9. [PMID: 22464422 DOI: 10.1016/j.biortech.2012.03.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 02/29/2012] [Accepted: 03/01/2012] [Indexed: 05/18/2023]
Abstract
Whole stillage, as sole substrate or co-digested with cattle manure, was evaluated as substrate for biogas production in five mesophilic laboratory-scale biogas reactors, operating semi-continuously for 640 days. The process performance was monitored by chemical parameters and by quantitative analysis of the methanogenic and acetogenic population. With whole stillage as sole substrate the process showed clear signs of instability after 120 days of operation. However, co-digestion with manure clearly improved biogas productivity and process stability and indicated increased methane yield compared with theoretical values. The methane yield at an organic loading rate (OLR) at 2.8 g VS/(L×day) and a hydraulic retention time (HRT) of 45 days with a substrate mixture 85% whole stillage and 15% manure (based on volatile solids [VS]) was 0.31 N L CH(4)/gVS. Surprisingly, the abundance of the methanogenic and acetogenic populations remained relatively stable throughout the whole operation and was not influenced by process performance.
Collapse
Affiliation(s)
- Maria Westerholm
- Department of Microbiology, Swedish University of Agricultural Sciences, Uppsala BioCenter, P.O. Box 7025, SE-750 07 Uppsala, Sweden
| | | | | |
Collapse
|
29
|
Shakeri Yekta S, Gustavsson J, Svensson BH, Skyllberg U. Sulfur K-edge XANES and acid volatile sulfide analyses of changes in chemical speciation of S and Fe during sequential extraction of trace metals in anoxic sludge from biogas reactors. Talanta 2012; 89:470-7. [DOI: 10.1016/j.talanta.2011.12.065] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 12/12/2011] [Accepted: 12/15/2011] [Indexed: 11/28/2022]
|