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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.
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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.
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Awasthi MK, Sarsaiya S, Wainaina S, Rajendran K, Awasthi SK, Liu T, Duan Y, Jain A, Sindhu R, Binod P, Pandey A, Zhang Z, Taherzadeh MJ. Techno-economics and life-cycle assessment of biological and thermochemical treatment of bio-waste. RENEWABLE AND SUSTAINABLE ENERGY REVIEWS 2021; 144:110837. [DOI: 10.1016/j.rser.2021.110837] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
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Enhance biological nitrogen and phosphorus removal in wastewater treatment process by adding food waste fermentation liquid as external carbon source. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2020.107811] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Chen H, Simoska O, Lim K, Grattieri M, Yuan M, Dong F, Lee YS, Beaver K, Weliwatte S, Gaffney EM, Minteer SD. Fundamentals, Applications, and Future Directions of Bioelectrocatalysis. Chem Rev 2020; 120:12903-12993. [DOI: 10.1021/acs.chemrev.0c00472] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hui Chen
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Olja Simoska
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Koun Lim
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Matteo Grattieri
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Mengwei Yuan
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Fangyuan Dong
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Yoo Seok Lee
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Kevin Beaver
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Samali Weliwatte
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Erin M. Gaffney
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
| | - Shelley D. Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, United States
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Xing T, Yu S, Zhen F, Kong X, Sun Y. Anaerobic fermentation of hybrid Pennisetum mixed with fruit and vegetable wastes to produce volatile fatty acids. RSC Adv 2020; 10:33261-33267. [PMID: 35515045 PMCID: PMC9056692 DOI: 10.1039/d0ra04400h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 08/10/2020] [Indexed: 11/21/2022] Open
Abstract
The production of volatile fatty acids (VFAs) via anaerobic fermentation is a new technology that provides a high-value utilization of biomass. This work used hybrid Pennisetum (HP) and fruit and vegetable waste (FVW) as raw materials to investigate the influence of different ratios of HP to FVW on the production of VFAs under different methanogenic inhibition conditions. It has been shown that both alkaline and neutral conditions (using methanogenic inhibitors), could generate higher acid yields than acidic conditions. Under initial alkaline conditions, mono-fermentation of HP and FVW could obtain maximum VFA yields of 596 ± 22 mg g-1 VS and 626 ± 7 mg g-1 VS, which were higher than those obtained under neutral conditions. In contrast, there was no remarkable difference in VFA yield between alkaline and neutral conditions when co-fermentation of HP and FVW was carried out. The VFA yields decreased significantly with the process of co-fermentation. The maximum VFA yields were decreased by 33.2% and 21.9% when HP was fermented with 15% and 30% of FVW, respectively. There was a clear difference in the composition of VFAs obtained under different initial conditions. The maximum selectivity was achieved under alkaline conditions, where the acetate content reached more than 85%. This study brings a theoretical basis for optimizing the anaerobic fermentation process of lignocellulose to produce VFAs.
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Affiliation(s)
- Tao Xing
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Guangzhou 510640 PR China
- CAS Key Laboratory of Renewable Energy Guangzhou 510640 PR China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640 PR China
- University of Chinese Academy of Sciences Beijing 100049 PR China
| | - Shutai Yu
- Western China Energy & Environment Research Center, Lanzhou University of Technology Lanzhou 730050 PR China
| | - Feng Zhen
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Guangzhou 510640 PR China
- CAS Key Laboratory of Renewable Energy Guangzhou 510640 PR China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640 PR China
| | - Xiaoying Kong
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Guangzhou 510640 PR China
- CAS Key Laboratory of Renewable Energy Guangzhou 510640 PR China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640 PR China
| | - Yongming Sun
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Guangzhou 510640 PR China
- CAS Key Laboratory of Renewable Energy Guangzhou 510640 PR China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640 PR China
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Wainaina S, Lukitawesa, Kumar Awasthi M, Taherzadeh MJ. Bioengineering of anaerobic digestion for volatile fatty acids, hydrogen or methane production: A critical review. Bioengineered 2020; 10:437-458. [PMID: 31570035 PMCID: PMC6802927 DOI: 10.1080/21655979.2019.1673937] [Citation(s) in RCA: 177] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Anaerobic digestion (AD) is a well-established technology used for producing biogas or biomethane alongside the slurry used as biofertilizer. However, using a variety of wastes and residuals as substrate and mixed cultures in the bioreactor makes AD as one of the most complicated biochemical processes employing hydrolytic, acidogenic, hydrogen-producing, acetate-forming bacteria as well as acetoclastic and hydrogenoclastic methanogens. Hydrogen and volatile fatty acids (VFAs) including acetic, propionic, isobutyric, butyric, isovaleric, valeric and caproic acid and other carboxylic acids such as succinic and lactic acids are formed as intermediate products. As these acids are important precursors for various industries as mixed or purified chemicals, the AD process can be bioengineered to produce VFAs alongside hydrogen and therefore biogas plants can become biorefineries. The current review paper provides the theory and means to produce and accumulate VFAs and hydrogen, inhibit their conversion to methane and to extract them as the final products. The effects of pretreatment, pH, temperature, hydraulic retention time (HRT), organic loading rate (OLR), chemical methane inhibitions, and heat shocking of the inoculum on VFAs accumulation, hydrogen production, VFAs composition, and the microbial community were discussed. Furthermore, this paper highlights the possible techniques for recovery of VFAs from the fermentation media in order to minimize product inhibition as well as to supply the carboxylates for downstream procedures.
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Affiliation(s)
- Steven Wainaina
- Swedish Centre for Resource Recovery, University of Borås , Borås , Sweden
| | - Lukitawesa
- Swedish Centre for Resource Recovery, University of Borås , Borås , Sweden
| | - Mukesh Kumar Awasthi
- Swedish Centre for Resource Recovery, University of Borås , Borås , Sweden.,College of Natural Resources and Environment, Northwest A&F University , Yangling , Shaanxi Province , PR China
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Iglesias-Iglesias R, Campanaro S, Treu L, Kennes C, Veiga MC. Valorization of sewage sludge for volatile fatty acids production and role of microbiome on acidogenic fermentation. BIORESOURCE TECHNOLOGY 2019; 291:121817. [PMID: 31374412 DOI: 10.1016/j.biortech.2019.121817] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
This work explored the production of volatile fatty acids (VFA) through the anaerobic digestion of sewage sludge (SS). The first experiment took place at batch scale to evaluate the combined effect of using a thermal pre-treatment (120 °C, 15 min) and different Substrate/Inoculum ratios (S/I) (1, 2, 4 and 6 g VS substrate/g VS inoculum) on the acidogenic potential of the SS. The results showed that the thermal pre-treatment influenced positively the degree of acidification of the SS at low S/I ratios, reaching maximum of 45%. Afterwards, a continuous lab-scale experiment, was set-up to study two ranges of organic loading rates (OLR): 1300-1600 mg COD L-1 d-1 and 2400-3500 mg COD L-1 d-1. The highest degree of acidification (22%) was achieved at the lowest OLR. Analysis of the microbial community in the reactor revealed that OTUs most abundant present genes related with amino acids and carbohydrates fermentation being crucial for VFA production.
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Affiliation(s)
- Ruth Iglesias-Iglesias
- Chemical Engineering Laboratory, Faculty of Sciences and Centre for Advanced Scientific Research (CICA), University of Coruña, Rua da Fraga 10, E - 15008 A Coruña, Spain
| | - Stefano Campanaro
- Department of Biology, University of Padova, Via U. Bassi 58/b, Padova 35131, Italy; CRIBI Biotechnology Center, University of Padova, Viale G. Colombo 3, Padova 35131, Italy
| | - Laura Treu
- Department of Biology, University of Padova, Via U. Bassi 58/b, Padova 35131, Italy
| | - Christian Kennes
- Chemical Engineering Laboratory, Faculty of Sciences and Centre for Advanced Scientific Research (CICA), University of Coruña, Rua da Fraga 10, E - 15008 A Coruña, Spain
| | - Maria C Veiga
- Chemical Engineering Laboratory, Faculty of Sciences and Centre for Advanced Scientific Research (CICA), University of Coruña, Rua da Fraga 10, E - 15008 A Coruña, Spain.
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Soomro AF, Ni Z, Ying L, Liu J. The effect of ISR on OFMSW during acidogenic fermentation for the production of AD precursor: kinetics and synergies. RSC Adv 2019; 9:18147-18156. [PMID: 35515208 PMCID: PMC9064650 DOI: 10.1039/c9ra02898f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 05/16/2019] [Indexed: 11/21/2022] Open
Abstract
Acidogenic fermentation of organic fraction of municipal solid waste (OFMSW) and it's components (food waste and paper wastes) was studied in batch percolator reactor without artificial pH adjustment.
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Affiliation(s)
| | - Zhe Ni
- Beijing GeoEnviron Engineering & Technology, Inc
- Beijing 100095
- China
| | - Li Ying
- Key Laboratory of Clean Energy of Liaoning
- College of Energy and Environment
- Shenyang Aerospace University
- Shenyang 110136
- China
| | - Jianguo Liu
- School of Environment
- Tsinghua University
- Beijing
- China
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Meng S, Yin Y, Yu L. Exploration of a high-efficiency and low-cost technique for maximizing the glucoamylase production from food waste. RSC Adv 2019; 9:22980-22986. [PMID: 35514468 PMCID: PMC9067104 DOI: 10.1039/c9ra04530a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 07/11/2019] [Indexed: 11/26/2022] Open
Abstract
This study was aimed at the exploration of high-efficiency and low-cost technique for glucoamylase (GA) production from food waste; moreover, the produced GA could be directly used in the hydrolysis of food waste. A mixture of food waste, rice waste and cake waste as a sole feedstock was investigated for the production of GA via solid-state fermentation. The highest GA activity of 458.3 U g−1 was obtained from the rice waste after 9 days of incubation. The cake waste also demonstrated a high GA production, achieving 406.5 U g−1 dry substrate. However, the most practical substrate for GA production that could be integrated in the food waste treatment was the mixed food waste, which could effectively produce GA without any additives or adjustments using the technique developed in this study. The optimum conditions for GA production from the mixed food waste were determined through a response surface methodology: the temperature of 31.16 °C, the inoculum amount of 1.54 mL, and the time of fermentation of 7.81 days. The maximum GA activity of 180.59 U g−1 could be achieved under these optimum conditions, which was actually much higher than those reported in the literature. This study showed that the mixed food waste could be an ideal feedstock for the on-site production of high-activity GA, and the produced GA could be directly applied in food waste hydrolysis, which significantly reduced the process cost. Remarkably high glucoamylase production from food waste was achieved by optimizing the fermentation conditions using the response surface methodology.![]()
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Affiliation(s)
- Shujuan Meng
- School of Space and Environment
- Beihang University
- Beijing 100191
- PR China
- Advanced Environmental Biotechnology Centre
| | - Yao Yin
- Advanced Environmental Biotechnology Centre
- Nanyang Environment & Water Research Institute
- Nanyang Technological University
- Singapore
| | - Liu Yu
- Advanced Environmental Biotechnology Centre
- Nanyang Environment & Water Research Institute
- Nanyang Technological University
- Singapore
- School of Civil and Environmental Engineering
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Nzeteu CO, Trego AC, Abram F, O’Flaherty V. Reproducible, high-yielding, biological caproate production from food waste using a single-phase anaerobic reactor system. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:108. [PMID: 29651303 PMCID: PMC5894149 DOI: 10.1186/s13068-018-1101-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 03/31/2018] [Indexed: 05/06/2023]
Abstract
BACKGROUND Nowadays, the vast majority of chemicals are either synthesised from fossil fuels or are extracted from agricultural commodities. However, these production approaches are not environmentally and economically sustainable, as they result in the emission of greenhouse gases and they may also compete with food production. Because of the global agreement to reduce greenhouse gas emissions, there is an urgent interest in developing alternative sustainable sources of chemicals. In recent years, organic waste streams have been investigated as attractive and sustainable feedstock alternatives. In particular, attention has recently focused on the production of caproate from mixed culture fermentation of low-grade organic residues. The current approaches for caproate synthesis from organic waste are not economically attractive, as they involve the use of two-stage anaerobic digestion systems and the supplementation of external electron donors, both of which increase its production costs. This study investigates the feasibility of producing caproate from food waste (FW) without the supplementation of external electron donors using a single-phase reactor system. RESULTS Replicate leach-bed reactors were operated on a semi-continuous mode at organic loading of 80 g VS FW l-1 and at solid retention times of 14 and 7 days. Fermentation, rather than hydrolysis, was the limiting step for caproate production. A higher caproate production yield 21.86 ± 0.57 g COD l-1 was achieved by diluting the inoculating leachate at the beginning of each run and by applying a leachate recirculation regime. The mixed culture batch fermentation of the FW leachate was able to generate 23 g caproate COD l-1 (10 g caproate l-1), at a maximum rate of 3 g caproate l-1 day-1 under high H2 pressure. Lactate served as the electron donor and carbon source for the synthesis of caproate. Microbial community analysis suggested that neither Clostridium kluyveri nor Megasphaera elsdenii, which are well-characterised caproate producers in bioreactors systems, were strongly implicated in the synthesis of caproate, but that rather Clostridium sp. with 99% similarity to Ruminococcaceae bacterium CPB6 and Clostridium sp. MT1 likely played key roles in the synthesis of caproate. This finding indicates that the microbial community capable of caproate synthesis could be diverse and may therefore help in maintaining a stable and robust process. CONCLUSIONS These results indicate that future, full-scale, high-rate caproate production from carbohydrate-rich wastes, associated with biogas recovery, could be envisaged.
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Affiliation(s)
- Corine Orline Nzeteu
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland (NUI), Galway, Ireland
| | - Anna Christine Trego
- Microbial Communities Lab, Microbiology, School of Natural Sciences, National University of Ireland (NUI), Galway, Ireland
| | - Florence Abram
- Functional Environmental Microbiology, Microbiology, School of Natural Sciences, National University of Ireland (NUI), Galway, Ireland
| | - Vincent O’Flaherty
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland (NUI), Galway, Ireland
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Xu J, Mustafa AM, Sheng K. Effects of inoculum to substrate ratio and co-digestion with bagasse on biogas production of fish waste. ENVIRONMENTAL TECHNOLOGY 2017; 38:2517-2522. [PMID: 27927081 DOI: 10.1080/09593330.2016.1269837] [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] [Received: 07/12/2016] [Accepted: 12/04/2016] [Indexed: 06/06/2023]
Abstract
To overcome the biogas inhibition in anaerobic digestion of fish waste (FW), effects of inoculum to substrate ratio (I/S, based on VS) and co-digestion with bagasse on biogas production of FW were studied in batch reactors. I/S value was from 0.95 to 2.55, bagasse content in co-digestion (based on VS) was 25%, 50% and 75%. The highest biogas yield (433.4 mL/gVS) with 73.34% methane content was obtained at an I/S value of 2.19 in mono-digestion of FW; the biogas production was inhibited and the methane content was below 70% when I/S was below 1.5. Co-digestion of FW and bagasse could improve the stability and biogas potential, also reducing the time required to obtain 70% of the total biogas production, although the total biogas yield and methane content decreased with the increase in bagasse content in co-digestion. Biogas yield of 409.5 mL/gVS was obtained in co-digestion of 75% FW and 25% bagasse; simultaneously 78.46% of the total biogas production was achieved after 10 days of digestion.
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Affiliation(s)
- Jie Xu
- a College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou , People's Republic of China
| | - Ahmed M Mustafa
- a College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou , People's Republic of China
| | - Kuichuan Sheng
- a College of Biosystems Engineering and Food Science , Zhejiang University , Hangzhou , People's Republic of China
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