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Shan T, Bao Y, Liu X, Wang X, Li D. Evolution characteristics and molecular constraints of microbial communities during coal biogasification. Bioprocess Biosyst Eng 2024:10.1007/s00449-024-03086-1. [PMID: 39331178 DOI: 10.1007/s00449-024-03086-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Accepted: 09/04/2024] [Indexed: 09/28/2024]
Abstract
This study investigates the production of biomethane, and variation in microbial community and coal molecular structures using gas chromatography, 16S rRNA high-throughput sequencing and Fourier transform infrared spectroscopy. Additionally, the factors influencing microbial community structure at a molecular level are discussed. The results demonstrate that bituminous coal exhibits a higher biomethane yield than anthracite coal. In bituminous coal samples, Escherichia and Proteiniphilum are the predominant bacteria at day 0, while Macellibacteroides dominates from days 5 to 35. Methanofollis is the dominated archaea during days 0 to 15, followed by Methanosarcina on day 35. In anthracite coal samples, Soehngenia is the dominant bacterial genus at day 0; however, it transitions to mainly Soehngenia and Aminobacterium within days 5-15 before evolving into Acetomicrobium on day 35. Methanocorpusculum is predominantly found in archaeal communities during days 0-15 but shifts to Methanosarcina on day 35. Alpha diversity analysis reveals that bacterial communities have higher species abundance and diversity compared to archaeal communities. Redundancy analysis indicates a significant correlation between coal molecular structure and bacterial community composition (P value < 0.05), whereas no correlation exists with archaeal community composition (P value > 0.05). The research findings provide theoretical support for revealing the biological gasification mechanisms of coal.
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Affiliation(s)
- Tuo Shan
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, China
| | - Yuan Bao
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, China.
- Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi'an, 710054, China.
| | - Xiangrong Liu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China
| | - Xiaojing Wang
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, China
| | - Dan Li
- College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, China
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2
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Li S, Zhang Y, Liu M, Du Z, Li J, Gu L, Xu L, Liu F. Ascorbic acid reduction pretreatment enhancing metal regulation to improve methane production from anaerobic digestion of waste activated sludge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169185. [PMID: 38092219 DOI: 10.1016/j.scitotenv.2023.169185] [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: 07/17/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023]
Abstract
Conversion of waste activated sludge (WAS) to methane by anaerobic digestion (AD) is often limited by the slow rate of hydrolysis, and the presence of metal ions in sludge is regarded as a critical factor hindering sludge hydrolysis. This study developed a novel strategy to remove Fe from WAS by using ascorbic acid (VC) as a reducing agent under acidic conditions. The feasibility of reduction pretreatment in improving methane production of AD and its intrinsic mechanism were investigated. Results indicate that, under VC doses of 100 mmol/L and pH of 3.50, pretreatment removed 47.60 % of Fe, 59.88 % of Ca, and 51.86 % of Mg contained in the sludge. The removal of metal ions facilitated the disruption of sludge flocculation structure and extracellular polymeric substance (EPS) layers, leading to a 14.78 % increase in cell lysis and a decrease in fractal dimension values to 2.08. Batch AD experiments showed that VC pretreatment improved methane production, with an optimized net methane yield of 190.22 mL/g·VS, an increase of 134.75 % compared to raw WAS. The pretreatment affected the interfacial interaction energy of the sludge, leading to a transformation in the sludge surfaces from hydrophilic to hydrophobic, reducing the interaction between sludge molecules and increasing the number of binding sites available for enzymatic reactions. According to a study of microbial communities, it was found that VC pretreatment caused an increase in the presence of essential functional microbes responsible for hydrolysis, acidification, and methanation. This increase in acetoclastic and hydrogenotrophic methanogens resulted in a substantial enhancement in methane production. These results can be used to develop better pretreatment methods to enhance AD performance.
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Affiliation(s)
- Siqi Li
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Yu Zhang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Miao Liu
- Gastrointestinal Cancer Center, Chongqing University Cancer Hospital, 174 Shapingba Road, 400045, PR China
| | - Zexuan Du
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Jinze Li
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Li Gu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China.
| | - Linji Xu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Feng Liu
- Key Laboratory of Agro-ecological Processes in Subtropical Regions, Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan 410125, PR China
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Rajeshkumar L, Kumar PS, Ramesh M, Sanjay MR, Siengchin S. Assessment of biodegradation of lignocellulosic fiber-based composites - A systematic review. Int J Biol Macromol 2023; 253:127237. [PMID: 37804890 DOI: 10.1016/j.ijbiomac.2023.127237] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/29/2023] [Accepted: 10/01/2023] [Indexed: 10/09/2023]
Abstract
Lignocellulosic fiber-reinforced polymer composites are the most extensively used modern-day materials with low density and better specific strength specifically developed to render better physical, mechanical, and thermal properties. Synthetic fiber-reinforced composites face some serious issues like low biodegradability, non-environmentally friendly, and low disposability. Lignocellulosic or natural fiber-reinforced composites, which are developed from various plant-based fibers and animal-based fibers are considered potential substitutes for synthetic fiber composites because they are characterized by lightweight, better biodegradability, and are available at low cost. It is very much essential to study end-of-life (EoL) conditions like biodegradability for the biocomposites which occur commonly after their service life. During biodegradation, the physicochemical arrangement of the natural fibers, the environmental conditions, and the microbial populations, to which the natural fiber composites are exposed, play the most influential factors. The current review focuses on a comprehensive discussion of the standards and assessment methods of biodegradation in aerobic and anaerobic conditions on a laboratory scale. This review is expected to serve the materialists and technologists who work on the EoL behaviour of various materials, particularly in natural fiber-reinforced polymer composites to apply these standards and test methods to various classes of biocomposites for developing sustainable materials.
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Affiliation(s)
- L Rajeshkumar
- Centre for Machining and Materials Testing, KPR Institute of Engineering and Technology, Coimbatore, Tamil Nadu, India
| | - P Sathish Kumar
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand
| | - M Ramesh
- Department of Mechanical Engineering, KIT-Kalaignarkarunanidhi Institute of Technology, Coimbatore, Tamil Nadu, India
| | - M R Sanjay
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand.
| | - Suchart Siengchin
- Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand
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4
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Singh AK, Nakhate SP, Gupta RK, Chavan AR, Poddar BJ, Prakash O, Shouche YS, Purohit HJ, Khardenavis AA. Mining the landfill soil metagenome for denitrifying methanotrophic taxa and validation of methane oxidation in microcosm. ENVIRONMENTAL RESEARCH 2022; 215:114199. [PMID: 36058281 DOI: 10.1016/j.envres.2022.114199] [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: 05/17/2021] [Revised: 05/21/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
In the present study, the microbial community residing at different depths of the landfill was characterized to assess their roles in serving as a methane sink. Physico-chemical characterization revealed the characteristic signatures of anaerobic degradation of organic matter in the bottom soil (50-60 cm) and, active process of aerobic denitrification in the top soil (0-10 cm). This was also reflected from the higher abundance of bacterial domain in the top soil metagenome represented by dominant phyla Proteobacteria and Actinobacteria which are prime decomposers of organic matter in landfill soils. The multiple fold higher relative abundances of the two most abundant genera; Streptomyces and Intrasporangium in the top soil depicted greater denitrifying taxa in top soil than the bottom soil. Amongst the aerobic methanotrophs, the genera Methylomonas, Methylococcus, Methylocella, and Methylacidiphilum were abundantly found in the top soil metagenome that were essential for oxidizing methane generated in the landfill. On the other hand, the dominance of archaeal domain represented by Methanosarcina and Methanoculleus in the bottom soil highlighted the complete anaerobic digestion of organic components via acetoclasty, carboxydotrophy, hydrogenotrophy, methylotrophy. Functional characterization revealed a higher abundance of methane monooxygenase gene in the top soil and methyl coenzyme M reductase gene in the bottom soil that correlated with the higher relative abundance of aerobic methanotrophs in the top soil while methane generation being the active process in the highly anaerobic bottom soil in the landfill. The activity dependent abundance of endogenous microbial communities in the different zones of the landfill was further validated by microcosm studies in serum bottles which established the ability of the methanotrophic community for methane metabolism in the top soil and their potential to serve as sink for methane. The study provides a better understanding about the methanotrophs in correlation with their endogenous environment, so that these bacteria can be used in resolving the environmental issues related to methane and nitrogen management at landfill site.
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Affiliation(s)
- Ashish Kumar Singh
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Suraj Prabhakarrao Nakhate
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rakesh Kumar Gupta
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Atul Rajkumar Chavan
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Bhagyashri Jagdishprasad Poddar
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Om Prakash
- National Centre for Microbial Resource, National Centre for Cell Sciences, Pune, Maharashtra, 411007, India
| | - Yogesh S Shouche
- National Centre for Microbial Resource, National Centre for Cell Sciences, Pune, Maharashtra, 411007, India
| | - Hemant J Purohit
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Anshuman Arun Khardenavis
- Environmental Biotechnology and Genomics Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, Maharashtra, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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5
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Miranda EM, Severson C, Reep JK, Hood D, Hansen S, Santisteban L, Hamdan N, Delgado AG. Continuous-mode acclimation and operation of lignocellulosic sulfate-reducing bioreactors for enhanced metal immobilization from acidic mining-influenced water. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:128054. [PMID: 34986575 DOI: 10.1016/j.jhazmat.2021.128054] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/22/2021] [Accepted: 12/07/2021] [Indexed: 06/14/2023]
Abstract
Lignocellulosic sulfate-reducing bioreactors are an inexpensive passive approach for treatment of mining-influenced water (MIW). Typically, microbial community acclimation to MIW involves bioreactor batch-mode operation to initiate lignocellulose hydrolysis and fermentation and provide electron donors for sulfate-reducing bacteria. However, batch-mode operation could significantly prolong bioreactor start-up times (up to several months) and select for slow-growing microorganisms. In this study we assessed the feasibility of bioreactor continuous-mode acclimation to MIW (pH 2.5, 6.5 mM SO42-, 18 metal(loid)s) as an alternate start-up method. Results showed that bioreactors with spent brewing grains and sugarcane bagasse achieved acclimation in continuous mode at hydraulic retention times (HRTs) of 7-12-d within 16-22 days. During continuous-mode acclimation, extensive SO42- reduction (80 ± 20% -91 ± 3%) and > 98% metal(loid) removal was observed. Operation at a 3-d HRT further yielded a metal(loid) removal of 97.5 ± 1.3 -98.8 ± 0.9% until the end of operation. Sulfate-reducing microorganisms were detected closer to the influent in the spent brewing grains bioreactors, and closer to the effluent in the sugarcane bagasse bioreactors, giving insight as to where SO42- reduction was occurring. Results strongly support that a careful selection of lignocellulose and bioreactor operating parameters can bypass typical batch-mode acclimation, shortening bioreactor start-up times and promoting effective MIW metal(loid) immobilization and treatment.
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Affiliation(s)
- Evelyn M Miranda
- Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, 1001 S McAllister Ave, Tempe, AZ 85287, United States; Center for Bio-mediated & Bio-inspired Geotechnics, Arizona State University, 425 E University Dr, Tempe, AZ 85281, United States; School for Engineering of Matter, Transport and Energy, Arizona State University, 501 E Tyler Mall, Tempe, AZ 85281, United States
| | - Carli Severson
- Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, 1001 S McAllister Ave, Tempe, AZ 85287, United States; Center for Bio-mediated & Bio-inspired Geotechnics, Arizona State University, 425 E University Dr, Tempe, AZ 85281, United States
| | - Jeffrey K Reep
- Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, 1001 S McAllister Ave, Tempe, AZ 85287, United States; Center for Bio-mediated & Bio-inspired Geotechnics, Arizona State University, 425 E University Dr, Tempe, AZ 85281, United States; School of Sustainable Engineering and the Built Environment, Arizona State University, 660 S College Ave, Tempe, AZ 85281, United States
| | - Daniel Hood
- Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, 1001 S McAllister Ave, Tempe, AZ 85287, United States; Center for Bio-mediated & Bio-inspired Geotechnics, Arizona State University, 425 E University Dr, Tempe, AZ 85281, United States
| | - Shane Hansen
- Freeport-McMoRan Inc., 800 E Pima Mine Rd, Sahuarita, AZ 85629, United States
| | - Leonard Santisteban
- Freeport-McMoRan Inc., 800 E Pima Mine Rd, Sahuarita, AZ 85629, United States
| | - Nasser Hamdan
- Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, 1001 S McAllister Ave, Tempe, AZ 85287, United States; Center for Bio-mediated & Bio-inspired Geotechnics, Arizona State University, 425 E University Dr, Tempe, AZ 85281, United States; School of Sustainable Engineering and the Built Environment, Arizona State University, 660 S College Ave, Tempe, AZ 85281, United States
| | - Anca G Delgado
- Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, 1001 S McAllister Ave, Tempe, AZ 85287, United States; Center for Bio-mediated & Bio-inspired Geotechnics, Arizona State University, 425 E University Dr, Tempe, AZ 85281, United States; School of Sustainable Engineering and the Built Environment, Arizona State University, 660 S College Ave, Tempe, AZ 85281, United States.
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6
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Zou X, Wang Y, Dai Y, Zhou S, Wang B, Li Y, Li J. Batch and semi-continuous experiments examining the sludge mesophilic anaerobic digestive performance with different varieties of rice straw. BIORESOURCE TECHNOLOGY 2022; 346:126651. [PMID: 34974102 DOI: 10.1016/j.biortech.2021.126651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/23/2021] [Accepted: 12/26/2021] [Indexed: 06/14/2023]
Abstract
Anaerobic co-digestion of excess sludge (ES) and different varieties of rice straw including indica rice straw (IRS), japonica rice straw (JRS) and glutinous rice straw (GRS) was investigated in batch and semi-continuous experiments. The batch experiment results showed that the GRS addition presents the highest hydrolysis and methanogenesis rates, its cumulative methane yield (CMY) was 305.75 mL/g VS and its average methane content was 60.56%. After digestion, the structure of GRS was almost completely destroyed, which was beneficial to the degradation of lignocellulose. The digestive process is affected by the abundance of Actinobactereria, Proteobacteria, Methanosaetae and Methanosarcina. The results of semi-continuous digestion were similar to batch digestion. In addition, the addition of GRS increased TN concentration in biogas residue and TP concentration in biogas slurry, but was not conducive to the subsequent dehydration of sludge.
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Affiliation(s)
- Xiaoshuang Zou
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Yiran Wang
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Yongheng Dai
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Shaoqi Zhou
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang 550025, China
| | - Bin Wang
- College of Civil Engineering, Guizhou University, Guiyang 550025, China
| | - Yancheng Li
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang 550025, China
| | - Jiang Li
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang 550025, China.
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Wang Z, Li J, Yu F, Yan B, Chen G. Comprehensive evaluation of gradient controlled anaerobic digestion and pyrolysis integration processes: A case study of Sargassum treatment. BIORESOURCE TECHNOLOGY 2022; 345:126496. [PMID: 34883196 DOI: 10.1016/j.biortech.2021.126496] [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: 10/11/2021] [Revised: 11/28/2021] [Accepted: 11/30/2021] [Indexed: 06/13/2023]
Abstract
In this study, an integrated process of gradient controlled anaerobic digestion (AD) and pyrolysis (PY) was proposed for energy recovery of Sargassum (SA). The methanogenic performance of SA and the PY performance of subsequent digestate were investigated. And the energy flow of the integrated process was comprehensively evaluated. The results showed that two methanogenic peaks occurred, which were appeared on the 7th day (9.57 mL/g VS) and the 17th day (15.74 mL/g VS), respectively. The structure and toughness of SA were destroyed by AD, which altered the subsequent PY performance. For the energy flow, the AD (lasted for 14 days) integrated PY process showed a superior performance compared with direct PY, as the total energy recovery increased from 5.88 to 6.42 MJ/kg TS. This study laid a foundation for the successful integration of AD and PY, which provided a guidance for the clean treatment and energy recovery of biomass.
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Affiliation(s)
- Zhi Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jian Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Fan Yu
- Institute of Energy and Power Engineering, Zhejiang University of Technology, Hangzhou 310023, China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China; Tianjin Key Lab of Biomass Wastes Utilization/Tianjin Engineering Research Center of Bio Gas/Oil Technology, Tianjin 300072, China.
| | - Gaunyi Chen
- School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China
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Zou L, Wang C, Zhao X, Wu K, Liang C, Yin F, Yang B, Liu J, Yang H, Zhang W. Enhanced anaerobic digestion of swine manure via a coupled microbial electrolysis cell. BIORESOURCE TECHNOLOGY 2021; 340:125619. [PMID: 34325391 DOI: 10.1016/j.biortech.2021.125619] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
Microbial electrolysis cell coupled anaerobic digestion (MEC-AD) is a new technology in energy recovery and waste treatment, which could be used to recycle swine manure. Here, different applied voltage effects were studied using MEC-AD with swine manure as a substrate. The maximum cumulative biogas and methane yields, both occurring with 0.9 V, were 547.3 mL/g total solid (TS) and 347.7 mL/g TS, respectively. The increased energy can counterbalance the electrical input. First order, logistic, gompertz, and back-propagation artificial neural network (BP-ANN) models were used to study cumulative biogas and methane yields. The BP-ANN model was superior to the other three models. The maximum degradation rate of hemicellulose, cellulose, and lignin was 60.97%, 48.59%, and 31.59% at 0.9 V, respectively. The BP-ANN model establishes a model for cumulative biogas and methane yields using MEC-AD. Thus, MEC-AD enhanced biogas and methane production and accelerated substrate degradation at a suitable voltage.
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Affiliation(s)
- Lifei Zou
- Yunnan Normal University, Kunming 650500, PR China; Xingyi Normal University for Nationalities, Xingyi 562400, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China
| | - Changmei Wang
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China; Jilin Dongsheng Institute of Biomass Energy Engineering, Tonghua 134118, PR China
| | - Xingling Zhao
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China; Jilin Dongsheng Institute of Biomass Energy Engineering, Tonghua 134118, PR China
| | - Kai Wu
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China; Jilin Dongsheng Institute of Biomass Energy Engineering, Tonghua 134118, PR China
| | - Chengyue Liang
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China
| | - Fang Yin
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China; Jilin Dongsheng Institute of Biomass Energy Engineering, Tonghua 134118, PR China
| | - Bin Yang
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China
| | - Jing Liu
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China
| | - Hong Yang
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China
| | - Wudi Zhang
- Yunnan Normal University, Kunming 650500, PR China; Yunnan Research Center of Biogas Technology and Engineering, Kunming 650500, PR China; Jilin Dongsheng Institute of Biomass Energy Engineering, Tonghua 134118, PR China.
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9
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Li P, Liu D, Pei Z, Zhao L, Shi F, Yao Z, Li W, Sun Y, Wang S, Yu Q, Chen L, Liu J. Evaluation of lignin inhibition in anaerobic digestion from the perspective of reducing the hydrolysis rate of holocellulose. BIORESOURCE TECHNOLOGY 2021; 333:125204. [PMID: 33932811 DOI: 10.1016/j.biortech.2021.125204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/16/2021] [Accepted: 04/17/2021] [Indexed: 06/12/2023]
Abstract
In this study, Anaerobic Digestion Model No. 1 (ADM1) were modified to simulate anaerobic digestion (AD) process of microcrystalline cellulose (MCC) and five lignocellulosic substrates, with the goal of predicting the hydrolysis rates of holocellulose fractions in environments with and without lignin inhibition. After model verification, the hydrolysis rate constant of MCC, i.e., the hydrolyzability of cellulose without lignin inhibition, was 3.227 d-1, while those of the holocellulose fractions of five lignocellulosic substrates (I_khyd) were in the range of 1.270 d-1 to 3.364 d-1 (average of 2.242 d-1), which demonstrated remarkable suppression of holocellulose hydrolysis by lignin. Lignin inhibition index (LII) was proposed as an indicator to intuitively quantify and characterize the lignin inhibitory strength in a specific substrate. A series of factors with the potential to affect the LII were analyzed sequentially. This study provides an advanced understanding of the participation and behavior of lignin in the AD process.
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Affiliation(s)
- Pengfei Li
- Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Harbin 150086, PR China; Rural Energy & Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences, Key Laboratory Combining Farming & Animal Husbandry, Key Laboratory of Straw Energy Utilization, Harbin 150086, PR China
| | - Di Liu
- Heilongjiang Academy of Agricultural Sciences, Harbin 150086, PR China
| | - Zhanjiang Pei
- Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Harbin 150086, PR China; Rural Energy & Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences, Key Laboratory Combining Farming & Animal Husbandry, Key Laboratory of Straw Energy Utilization, Harbin 150086, PR China
| | - Lixin Zhao
- Institute of Agriculture Environment and Sustainable Development, Chinese Academy of Agriculture Science, Beijing 100081, China
| | - Fengmei Shi
- Rural Energy & Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences, Key Laboratory Combining Farming & Animal Husbandry, Key Laboratory of Straw Energy Utilization, Harbin 150086, PR China
| | - Zonglu Yao
- Institute of Agriculture Environment and Sustainable Development, Chinese Academy of Agriculture Science, Beijing 100081, China
| | - Wenzhe Li
- Department of Agriculture Biological Environment and Energy Engineering, School of Engineering, Northeast Agriculture University, Harbin 150030, PR China
| | - Yong Sun
- Department of Agriculture Biological Environment and Energy Engineering, School of Engineering, Northeast Agriculture University, Harbin 150030, PR China
| | - Su Wang
- Rural Energy & Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences, Key Laboratory Combining Farming & Animal Husbandry, Key Laboratory of Straw Energy Utilization, Harbin 150086, PR China
| | - Qiuyue Yu
- Rural Energy & Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences, Key Laboratory Combining Farming & Animal Husbandry, Key Laboratory of Straw Energy Utilization, Harbin 150086, PR China
| | - Lei Chen
- Heilongjiang Academy of Agricultural Sciences, Harbin 150086, PR China
| | - Jie Liu
- Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Harbin 150086, PR China; Rural Energy & Environmental Protection Institute of Heilongjiang Academy of Agricultural Sciences, Key Laboratory Combining Farming & Animal Husbandry, Key Laboratory of Straw Energy Utilization, Harbin 150086, PR China.
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10
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Chen Y, Jiang Q, Zhu R, Shi J, Chai H, Li L, Ai H, Shi D, He Q, Gu L. Effects of green waste addition on waste activated sludge and fat, oil and grease co-digestion in mesophilic batch digester. ENVIRONMENTAL TECHNOLOGY 2021; 42:2870-2884. [PMID: 31941413 DOI: 10.1080/09593330.2020.1717641] [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: 05/18/2019] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
Anaerobic digestion (AD) is regarded as an effective method to treat waste activated sludge (WAS) and fat, oil and grease (FOG). Co-digestion of WAS/FOG could promote the methane yield but it will cause acid and salinity inhibition. Green waste (GW) was added into the digesters, and its effects on co-digestion of WAS and FOG in the mesophilic batch digester were investigated. Digestive performances (such as hydrolysis, acidogenesis and methanogenesis) were studied emphatically. The results showed that digester L6 (WAS:FOG:GW = 1:2:1, VS basis) presented the highest specific methane yield (SMY, 341.5 mL/g VS). The results of kinetics study verified that there was a slower hydrolysis rate when GW was applied as a co-substrate, which could reduce the potential of acid inhibition. Volatile fatty acid (VFA) and electrical conductivity analysis showed that GW addition could keep moderate VFA concentrations and alleviate the negative effects of high-salinity substrates on the digestive systems. The microbial community and diversity analysis proved that GW addition was beneficial to keep the balance of hydrolytic bacteria, acidogens and acetogens. The results of this study indicated that GW addition could enhance the energy recovery and system stability in the WAS/FOG co-digestive system.
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Affiliation(s)
- Yongdong Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Qin Jiang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Ruilin Zhu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Jinghua Shi
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Hongxiang Chai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Li Li
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Hainan Ai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Dezhi Shi
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Qiang He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
| | - Li Gu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, People's Republic of China
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11
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Gao M, Zou H, Tian W, Shi D, Chai H, Gu L, He Q, Tang WZ. Co-digestive performance of food waste and hydrothermal pretreated corn cob. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 768:144448. [PMID: 33434805 DOI: 10.1016/j.scitotenv.2020.144448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 12/03/2020] [Accepted: 12/05/2020] [Indexed: 06/12/2023]
Abstract
Anaerobic co-digestion of lignocellulosic biomass and food waste (FW) has been extensively applied. However, whether hydrothermal pretreatment (HTP) of lignocellulosic biomass can enhance the performance in co-digestion deserves further investigation. In this study, corn cob (CC) was adopted as a typical lignocellulosic biomass for co-digestion with FW at different VS ratios of 1:3 (S1-S4) and 1:6 (S5-S8), attempting to evaluate the effect of HTP of CC at different temperature gradients (125, 150 and 175 °C) on the co-digestion performance. The emphasis was placed on hydrolysis, acidification and methanogenesis for different feedstock conditions. Results illustrated that the HTP had a certain destroying effect on the lignocellulose structure in CC and the crystallinity of cellulose decreased, significantly facilitating its co-digestion with FW. For FW/CC co-digestion at the VS ratio of 1:3, the S3 group (CC was pretreated at 150 °C) reached the maximum cumulative biogas yield (CBY) of 4660 mL and the maximum specific methane yield (SMY) of 316.9 mL/g·VS. Moreover, at 1:6, S7 group (pretreated at 150 °C) exhibited the optimal CBY of 4100 mL while achieving the SMY of 277.6 mL/g·VS among the digesters, indicating that the co-digestion of pretreated CC and FW could achieve higher methane production, and 150 °C refers to the optimal pretreatment temperature. Moreover, the peak values of the accumulated VFAs in digesters S1-S4 (2000-3000 mg/L) is higher than that in digesters S5-S8 (800-1500 mg/L). As suggested from microbial community and diversity date, the HTP expedited the enrichment of system hydrolyzing and acidogenic bacteria. These results are significant and provide certain guidance for optimizing the co-digestion of FW and CC in actual engineering.
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Affiliation(s)
- Meng Gao
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Huijing Zou
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Wenjing Tian
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Dezhi Shi
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Hongxiang Chai
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Li Gu
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China.
| | - Qiang He
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Walter Z Tang
- Environmental and Water Resources Engineering, Department of Civil and Environmental Engineering, Florida International University, 10555 W. Flagler Street, EC 3680, Miami, FL 33174, USA
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12
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Zhen F, Luo X, Xing T, Sun Y, Kong X, Li W. Performance evaluation and microbial community analysis of microaerobic pretreatment on thermophilic dry anaerobic digestion. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2020.107873] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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13
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Xiao K, Abbt-Braun G, Horn H. Changes in the characteristics of dissolved organic matter during sludge treatment: A critical review. WATER RESEARCH 2020; 187:116441. [PMID: 33022515 DOI: 10.1016/j.watres.2020.116441] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/16/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
Dissolved organic matter (DOM) of sludge is a heterogeneous mixture of high to low molecular weight organic substances which is including proteinaceous compounds, carbohydrates, humic substances, lipids, lignins, organic acids, organic micropollutants and other biological derived substances generated during wastewater treatment. This paper reviews definition, composition, quantification, and transformation of DOM during different sludge treatments, and the complex interplay of DOM with microbial communities. In anaerobic digestion, anaerobic digestion-refractory organic matter, particularly compounds showing polycyclic steroid-like, alkane and aromatic structures can be generated after pretreatment. During dewatering, the DOM fraction of low molecular weight proteins (< 20,000 Dalton) is the key parameter deteriorating sludge dewaterability. During composting, decomposition and polymerization of DOM occur, followed by the formation of humic substances. During landfill treatment, the composition of DOM, particularly humic substances, are related with leachate quality. Finally, suggestions are proposed for a better understanding of the transformation and degradation of DOM during sludge treatment. Future work in sludge studies needs the establishment and implementation of definitions for sample handling and the standardization of DOM methods for analysis, including sample preparation and fractionation, and data integration. A more detailed knowledge of DOM in sludge facilitates the operation and optimization of sludge treatment technologies.
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Affiliation(s)
- Keke Xiao
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, Hubei 430074, China; Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9, 76131 Karlsruhe, Germany; DVGW Research Laboratories, Water Chemistry and Water Technology, Engler-Bunte-Ring 9, 76131 Karlsruhe, Germany
| | - Gudrun Abbt-Braun
- Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9, 76131 Karlsruhe, Germany
| | - Harald Horn
- Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9, 76131 Karlsruhe, Germany; DVGW Research Laboratories, Water Chemistry and Water Technology, Engler-Bunte-Ring 9, 76131 Karlsruhe, Germany.
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14
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Xu Y, Awasthi MK, Li P, Meng X, Wang Z. Comparative analysis of prediction models for methane potential based on spent edible fungus substrate. BIORESOURCE TECHNOLOGY 2020; 317:124052. [PMID: 32877845 DOI: 10.1016/j.biortech.2020.124052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/19/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
In this study, ten spent edible fungus (SEF) with different compositional features were used for the maximum methanogenic potential (P0) evaluation, and the prediction models including regression and kinetics based on this were developed separately. The results showed that the regression model with more chemical components had a good correlation with the P0, and at least three chemical compositions could reach the threshold of sensitivity. The Cone model showed the best fitting effect on P0 in all kinetic models, which had higher R-square (>0.994) and lower error (1.004-5.672%). Meanwhile, the minimum digestive testing time (14 days) was determined by the evaluation of sensitivity via statistical indicators. It is concluded that the determination of the prediction model of P0 should be evaluated with the combination of statistical indicators and specific requirements.
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Affiliation(s)
- Yonghua Xu
- College of Electric and Information, Northeast Agriculture University, Harbin 150030, PR China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Taicheng Road 3#, Yangling, Shaanxi 712100, China
| | - Pengfei Li
- College of Engineering, Northeast Agriculture University, Harbin 150030, PR China
| | - Xianghui Meng
- College of Engineering, Northeast Agriculture University, Harbin 150030, PR China
| | - Zhi Wang
- College of Engineering, Northeast Agriculture University, Harbin 150030, PR China.
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15
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Jiang J, Wu P, Sun Y, Guo Y, Song B, Huang Y, Xing T, Li L. Comparison of microbial communities during anaerobic digestion of kitchen waste: Effect of substrate sources and temperatures. BIORESOURCE TECHNOLOGY 2020; 317:124016. [PMID: 32822892 DOI: 10.1016/j.biortech.2020.124016] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/08/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
In this study, batch experiments were conducted to compare the effect of temperature and substrate source on microbial communities in the anaerobic digestion of kitchen waste. The results showed that the microbial communities of anaerobic digestion were not sensitive to varied sources of waste, but shifted with the change in operating temperatures. In the reactors operated at mesophilic conditions, Levilinea, Syntrophomonas, Methanothrix, and Methanosphaerula, etc. were the dominant microbes during the process. While in thermophilic reactors, Levilinea, Ornatilinea, Methanosphaerula and Methanomassiliicoccus, etc. prevailed. Meanwhile, an enrichment in Coprothermobacter, Defluviitoga, Defluviitalea, Tepidimicrobium, Lutispora and Fonticella were observed as the temperature changed from mesophilic to thermophilic, suggesting these genera could be selectively enriched at thermophilic conditions. The results provided fundamental understanding of the microbiology that could support the scale up of food waste anaerobic digestion.
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Affiliation(s)
- Junfeng Jiang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510006, China; Key Laboratory of Ministry of Education for Water Quality Security and Protection in Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Linköping University-Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
| | - Peiwen Wu
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510006, China; Key Laboratory of Ministry of Education for Water Quality Security and Protection in Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Linköping University-Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
| | - Yongming Sun
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510006, China; Guangzhou Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Yufang Guo
- Key Laboratory of Ministry of Education for Water Quality Security and Protection in Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Linköping University-Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
| | - Bing Song
- Clean Technologies, Scion, 49 Sala Street, Private Bag 3020, Rotorua 3046, New Zealand
| | - Yi Huang
- Key Laboratory of Ministry of Education for Water Quality Security and Protection in Pearl River Delta, Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Linköping University-Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
| | - Tao Xing
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510006, China; Guangzhou Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Lianhua Li
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510006, China; Guangzhou Institute of Energy Conversion, CAS Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China.
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16
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Zhu R, Chen Y, Zhao T, Jiang Q, Wang H, Zheng L, Shi D, Zhai J, He Q, Gu L. Enhanced mesophilic anaerobic co-digestion of waste sludge and food waste by using hematite (α-Fe 2O 3) supported bentonite as additive. BIORESOURCE TECHNOLOGY 2020; 313:123603. [PMID: 32570075 DOI: 10.1016/j.biortech.2020.123603] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Ruilin Zhu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Yongdong Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Ting Zhao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China; CMCU Engineering Co.,Ltd, 17 Yuzhou Road, Chongqing 400039, PR China
| | - Qin Jiang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Hanqing Wang
- Shanghai Municipal Engineering Design Institute Group Co.,Ltd, 901 Zhongshan North Second Road, Shanghai 200433, PR China
| | - Liushi Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Dezhi Shi
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Jun Zhai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Qiang He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Li Gu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, College of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China.
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17
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Dai X, Hua Y, Liu R, Chen S, Li H, Dai L, Cai C. Biomethane production by typical straw anaerobic digestion: Deep insights of material compositions and surface properties. BIORESOURCE TECHNOLOGY 2020; 313:123643. [PMID: 32540695 DOI: 10.1016/j.biortech.2020.123643] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Straws as lignocellulosic agricultural biomass have a huge amount and are widely used for biomethane production by anaerobic digestion (AD). However, the mechanism of impacts of straw composition and surface properties on biomethane production remain unclear. Here, a lab-scale AD incubation experiment was conducted and the characterization of four types of straws (corn straw, wheat straw, sweet sorghum straw, and rice straw) were also determined. The straw compositions and net cumulative methane production showed significant difference. Although the relative contents of key organic components and carbon had no significant correlation to the biomethane production (r = -0.36, P > 0.05), there existed differences of non-polar characteristics, steric hindrance effect and special surface morphology in four types of straws, indicating that the surface characteristics affected anaerobic biomethane production process. In addition, the straw matrix associating with silicon might hinder the biotransformation.
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Affiliation(s)
- Xiaohu Dai
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yu Hua
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Rui Liu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Shuxian Chen
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Huiping Li
- College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Lingling Dai
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Chen Cai
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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18
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Tian W, Chen Y, Shen Y, Zhong C, Gao M, Shi D, He Q, Gu L. Effects of hydrothermal pretreatment on the mono- and co-digestion of waste activated sludge and wheat straw. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 732:139312. [PMID: 32438169 DOI: 10.1016/j.scitotenv.2020.139312] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/30/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
The refractory properties of waste activated sludge and wheat straw inhibit their bioenergy recovery by anaerobic digestion. This paper attempted to estimate the digestive performance, energy conversion efficiency and economic feasibility of wheat straw mono-digestion and its co-digestion with sludge by hydrothermal pretreatment at different temperature gradients (125, 150 and 175 °C). The results illustrated that the hydrolysis of both wheat straw and sludge were improved with the temperature increasing. It is noted that after pretreatment at 175 °C, wheat straw mono-digestion obtained the cumulative specific methane yield of 168.8 mL/g·VS, 6.9% reduction compared to the unpretreated straw (181.4 mL/g·VS) due to the inhibition by by-products (furfural and 5-hydroxymethylfurfural, 5-HMF) formed at high temperatures. The highest cumulative specific methane yield of 225.7 mL/g·VS was achieved by the co-digestion of pretreated wheat straw and pretreated sludge under 175 °C, indicating that the participation of sludge in co-digestion improved the buffer capacity of the system to relieve the inhibition. In addition, the co-digestion of sludge and wheat straw both pretreated at 175 °C obtained the maximum energy production of 7901.1 MJ/t, 52% promotion compared to the mono-digestion without pretreatment. The results of economic analysis showed that the mono-digestion of wheat straw obtained relatively low net profits and the mono-digestion of sludge pretreated at 175 °C achieved the highest net profit of 31.44 US$/t. These results suggest that the co-digestion of both pretreated wheat straw and sludge can achieve the highest biogas production and energy conversion efficiency.
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Affiliation(s)
- Wenjing Tian
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Yongdong Chen
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Yanqi Shen
- Chongqing Jiaotong University, 66 Xuefu Avenue, Chongqing 400074, PR China
| | - Cheng Zhong
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Meng Gao
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Dezhi Shi
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Qiang He
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China
| | - Li Gu
- Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing 400045, PR China.
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19
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Zou H, Jiang Q, Zhu R, Chen Y, Sun T, Li M, Zhai J, Shi D, Ai H, Gu L, He Q. Enhanced hydrolysis of lignocellulose in corn cob by using food waste pretreatment to improve anaerobic digestion performance. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 254:109830. [PMID: 31733477 DOI: 10.1016/j.jenvman.2019.109830] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 10/20/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
This study aims to enhance hydrolysis and anaerobic digestion of corn cob (CC) by using food waste (FW) pretreatment. FW, which tends to be acidification in fermentation, was applied in this process as an acid-like agent to accelerate lignocellulose hydrolysis, aiming to promote methane yield in further digestion process. The effect of FW pretreatment on pH, soluble chemical oxygen demand (SCOD), volatile fatty acids (VFAs), cellulose/hemicellulose contents and cellulose crystallinity are specially focused. FW:CC = 1:3 based on volatile solid (VS) was found to be the optimal mixing ratio in pretreatment and its hydrolysis efficiency was 28% higher than the control group. An increase of 13.2% in cellulose reduction and a decrease of 6.7% in cellulose crystallinity was achieved at this ratio. Supplementation of FW increased VFA concentrations in slurry mixture that directly change the activities of enzymes and microorganisms. In the stage of methane production, the digester A3 (FW:CC = 1:6 based on VS) with higher hydrolysis efficiency presented the best performance in methane production with a specific methane yield of 401.6 mL/g·VS, due to the recovery of the pH in this digester to the optimal pH range for methanogens' metabolism (pH 6.3-7.2). Kinetics studies of cellulose/hemicellulose degradation indicated that the pretreatment of FW could improve the degradation of cellulose. Three-dimensional excitation emission matrix (3DEEM) results further confirmed that FW play an important role in lignocellulose hydrolysis. In addition, variations of lignocellulosic textures during the pretreatment were also cleared by using field emission-scanning electron microscopy (FE-SEM) analysis.
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Affiliation(s)
- Huijing Zou
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Qin Jiang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Ruilin Zhu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Yongdong Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Tong Sun
- General Research Institute of Architecture & Planning Design Co. LTD., Chongqing University, 174 Shapingba Road, Chongqing, 400044, PR China
| | - Mingxing Li
- General Research Institute of Architecture & Planning Design Co. LTD., Chongqing University, 174 Shapingba Road, Chongqing, 400044, PR China
| | - Jun Zhai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Dezhi Shi
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Hainan Ai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
| | - Li Gu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China.
| | - Qiang He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Urban Construction and Environmental Engineering, Chongqing University, 174 Shapingba Road, Chongqing, 400045, PR China
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