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Amin FR, Khalid H, Wang J, Li Y, Ma L, Chen W, Duan Y, Zhai Y, Li D. High value-added chemical production through anaerobic codigestion of corn straw with a microbial consortium, cow manure and cow digestion solution. Anaerobe 2024; 89:102900. [PMID: 39154705 DOI: 10.1016/j.anaerobe.2024.102900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/14/2024] [Accepted: 08/15/2024] [Indexed: 08/20/2024]
Abstract
OBJECTIVES This study investigated the codigestion of corn straw (CS) with cow manure (CM), cow digestion solution (CD), and a strain consortium (SC) for enhanced volatile fatty acid (VFA) production. The aims of this study were to develop a sustainable technique to increase VFA yields, examine how combining microbial reagents with CS affects VFA production by functional microorganisms, and assess the feasibility of improving microbial diversity through codigestion. METHODS Batch experiments evaluated VFA production dynamics and microbial community changes with different combinations of CS substrates with CM, CD, and SC. Analytical methods included measuring VFAs by GC, ammonia and chemical oxygen demand (COD) by standard methods and microbial community analysis by 16S rRNA gene sequencing. RESULTS Codigesting CS with the strain consortium yielded initial VFA concentrations ranging from 0.6 to 1.0 g/L, which were greater than those of the other combinations (0.05-0.3 g/L). Including CM, and CD further increased VFA production to 1.0-2.0 g/L, with the highest value of 2.0 g/L occurring when all four substrates were codigested. Significant ammonium reduction (194-241 mg/L to 29-37 mg/L) and COD reduction (3310-5250 mg/L to 730-1210 mg/L) were observed. Codigestion with CM and CD had greater Shannon diversity indices (3.19-3.24) than did codigestion with the other consortia (2.26). Bacillota dominated (96.5-99.6 %), with Clostridiales playing key roles in organic matter breakdown. CONCLUSIONS This study demonstrated the feasibility of improving VFA yields and harnessing microbial diversity through anaerobic codigestion of lignocellulosic and animal waste streams. Codigestion substantially enhanced VFA production, which was dominated by butyrate, reduced ammonium and COD, and enriched fiber-degrading and fermentative bacteria. These findings can help optimize codigestion for sustainable waste management and high-value chemical production.
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Affiliation(s)
- Farrukh Raza Amin
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China; Department of Chemistry, COMSATS University Islamabad, Park Road, Tarlai Kalan, 45550, Islamabad, Pakistan
| | - Habiba Khalid
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China; Department of Applied Bioeconomy, Wrocław University of Environmental and Life Sciences, 50-375, Wrocław, Poland
| | - Jingjing Wang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China
| | - Yaxiang Li
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China
| | - Longxue Ma
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China
| | - Wuxi Chen
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China
| | - Yu Duan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China
| | - Yida Zhai
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China
| | - Demao Li
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, 300308, China; National Innovation Centre for Synthetic Biology, Tianjin, 300308, China.
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Liu D, Cen R, Yuan A, Wu M, Luo C, Chen M, Liang X, He T, Wu W, He T, Tian G. Effects of continuous low-speed biogas agitation on anaerobic digestion of high-solids pig manure: Performance and microbial community. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120355. [PMID: 38364542 DOI: 10.1016/j.jenvman.2024.120355] [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: 09/23/2023] [Revised: 02/01/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024]
Abstract
This study aimed to investigate effects of continuous low-speed biogas agitation on the anaerobic digestion (AD) performance and microbial community of high-solids pig manure (total solids content of 10%). Our results reveal that at a biogas agitation intensity of 1.10 L/g feed VS/d, CH4 production increased by 16.67% compared to the non-agitated condition, the removal efficiency of H2S reached 63.18%, and the abundance of Methanosarcina was the highest. The presence of Hungateiclostridiaceae was associated with H2S concentrations. An increasing biogas agitation intensity led to an elevated pH and a decreased oxidation-reduction potential (ORP). Acetate concentrations, pH, and ORP values indicated changes in H2S concentrations. Sedimentibacter demonstrates the potential to indicate biogas agitation intensity and pH. We demonstrate that continuous low-speed biogas agitation effectively increases CH4 production and reduces H2S concentrations in AD of high-solids pig manure, offering a potential technical pathway for developing AD processes for high-solids pig manure, it also demonstrates that AD process can reduce the risk of pathogen and parasite transmission.
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Affiliation(s)
- Dan Liu
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Ruxiang Cen
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Ai Yuan
- Agricultural Ecology and Resource Protection Station of Guizhou Province, Guiyang, 550001, China
| | - Mingxiang Wu
- Agricultural Environmental Monitoring Station in Yu-ping County, Yu-ping County of Guizhou Province, 554000, China
| | - Can Luo
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Manman Chen
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Xiwen Liang
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Tenbing He
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Wenxuan Wu
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Tengxia He
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Guangliang Tian
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-bioengineering, Institute of New Rural Development, Laboratory of Pollution Control and Resource Utilization Technology for Mountainous Livestock and Poultry Farming, Guizhou University, Guiyang 550025, Guizhou Province, China.
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3
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Hou Y, He M, Liu Y, Wang Q, Yang A, Yang F, Lei Z, Yi X, Huang W. Biological nitrogen removal mechanisms during anaerobic digestion of swine manure: Effects of biogas circulation and activated carbon addition. BIORESOURCE TECHNOLOGY 2023; 374:128766. [PMID: 36813051 DOI: 10.1016/j.biortech.2023.128766] [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: 01/03/2023] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
This study investigated the biological nitrogen removal mechanisms during the anaerobic digestion of swine manure and the effects of biogas circulation and activated carbon (AC) addition. Biogas circulation, AC addition, and their combination increased the methane yield by 25.9%, 22.3%, and 44.1%, respectively, when compared to the control. Nitrogen species analysis and metagenomic results indicated that nitrification-denitrification was the dominant ammonia removal pathway in all digesters with little oxygen, while anammox did not occur. Biogas circulation could promote mass transfer and induce air infiltration to enrich nitrification- and denitrification-related bacteria and functional genes. And AC might act as an electron shuttle to facilitate ammonia removal. The combined strategies showed a synergetic effect on the enrichment of nitrification and denitrification bacteria and functional genes, significantly lowering the total ammonia nitrogen by 23.6%. A single digester with biogas circulation and AC addition could enhance methanogenesis and ammonia removal via nitrification and denitrification.
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Affiliation(s)
- Yaoqi Hou
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Mengqi He
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Yongjie Liu
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Qian Wang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Aopan Yang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Fei Yang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Zhongfang Lei
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Xuesong Yi
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China
| | - Weiwei Huang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, School of Ecology and Environment, Hainan University, 58 Renmin Avenue, Meilan District, Haikou 570228, China.
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Li X, Deng L, Li F, Zheng D, Yang H. Effect of air mixing on high-solids anaerobic digestion of cow manure: Performance and mechanism. BIORESOURCE TECHNOLOGY 2023; 370:128545. [PMID: 36584718 DOI: 10.1016/j.biortech.2022.128545] [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: 10/30/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
This study aimed to further investigate the effect of air mixing on the performance of a high-solids anaerobic digestion system and reveal its underlying mechanisms via analyses of carbon conversion, microbial communities and key functional genes. When the air mixing intensity was 12.5, 37.5 and 62.5 mL/(L‧min), compared with the anaerobic digestion without air mixing, the methane yield was increased by 6 %, 13 % and 6 %, respectively. The improved performance was partly attributed to the increased hydrolysis rate of macromolecular substances by 5 %-16 % and carbon recovery in the form of methane by 6 %-7% compared with the controls. Functional flora (Magnetospirillum, Synergistaceae) and hydrolytic metabolism-related enzymes (cellulose, α-amylase) demonstrated higher abundance under air mixing condition, thus promoting the degradation of organic matter and methane production. This work provides some new insights into the use of air mixing to improve anaerobic digestion of high-solids waste.
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Affiliation(s)
- Xinwei Li
- Department of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, PR China
| | - Liangwei Deng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Fucheng Li
- Department of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Dan Zheng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Hongnan Yang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China.
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Cao Q, Zhang W, Lian T, Wang S, Yin F, Zhou T, Wei X, Dong H. Revealing mechanism of micro-aeration for enhancing volatile fatty acids production from swine manure. BIORESOURCE TECHNOLOGY 2022; 365:128140. [PMID: 36252761 DOI: 10.1016/j.biortech.2022.128140] [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: 08/06/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Micro-aeration is considered a new strategy for improving volatile fatty acids (VFAs) production of agricultural waste. This study investigated the effect and mechanism of micro-aeration of air and oxygen (O2) on VFAs production from swine manure. The results showed that Air-micro-aeration had the most significant improvement effect, with the highest VFAs of 8.21 g/L, which was increased by 22.4%. Moreover, the mixing effects of different micro-aeration were limited, and the microbial communities significantly varied. Firmicutes and Bacteroidota were the dominant hydrolytic and acidogenic bacteria, and Air-micro-aeration preferentially promoted electron transfer activity and energy generation. Methanosarcina, Methanocorpusculum, and Methanobrevibacter can adapt to environmental changes according to their different oxygen tolerance, and the consumption and conversion of VFAs by methanogens were slow under Air-micro-aeration condition. This study revealed mechanism of micro-aeration for improving VFAs production from swine manure, providing a theoretical basis for micro-aeration regulation optimization.
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Affiliation(s)
- Qitao Cao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Wanqin Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Tianjing Lian
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Shunli Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Fubin Yin
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Tanlong Zhou
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Xiaoman Wei
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Hongmin Dong
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
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Li L, Wang K, Sun Z, Zhao Q, Zhou H, Gao Q, Jiang J, Mei W. Effect of optimized intermittent mixing during high-solids anaerobic co-digestion of food waste and sewage sludge: Simulation, performance, and mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156882. [PMID: 35753448 DOI: 10.1016/j.scitotenv.2022.156882] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/01/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Inadequate mixing has been proven to be a major cause of anaerobic digester failure. This study revealed the mechanism of mixing intervals on high-solids anaerobic co-digestion (HS-AcoD) of food waste (FW) and sewage sludge (SS). Optimized intermittent mixing time (15 min/h) was determined through computational fluid dynamics (CFD) simulation. Experimental results indicated that the simulated intermittent mixing could shorten digestion time and increase cumulative methane output (366.8 mL/gVS) compared with continuous mixing and unmixing. Mixing could considerably accelerate substrate solubilization and hydrolysis. Maximum rates of acidogenesis (53.35 %) and methanogenesis (49.41 %) were observed with an optimized intermittent mixing (15 min/h). Vigorous mixing induced apoptosis and disrupted syntrophic metabolism, whereas intermittent mixing promoted the syntrophic metabolism between Syntrophomonas and Methanobacterium, and led to an enrichment of genes involved in acidogenic and methanogenic pathways. These findings have important implications for the development of an optimized intermittent mixing strategy for maximizing HS-AcoD efficiency of FW and SS.
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Affiliation(s)
- Lili Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Kun Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Zhijian Sun
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qingliang Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Huimin Zhou
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qingwei Gao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Junqiu Jiang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Wangyang Mei
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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Li J, Lei Y, Pu X, Liu Y, Mei Z, Tang Y. Improving biomethane fermentation through trace elements-driven microbial changes: Different effects of Fe0 combined with Co/Ni. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fu S, Lian S, Angelidaki I, Guo R. Micro-aeration: an attractive strategy to facilitate anaerobic digestion. Trends Biotechnol 2022; 41:714-726. [PMID: 36216713 DOI: 10.1016/j.tibtech.2022.09.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 01/11/2023]
Abstract
Micro-aeration can facilitate anaerobic digestion (AD) by regulating microbial communities and promoting the growth of facultative taxa, thereby increasing methane yield and stabilizing the AD process. Additionally, micro-aeration contributes to hydrogen sulfide stripping by oxidization to produce molecular sulfur or sulfuric acid. Although micro-aeration can positively affect AD, it must be strictly regulated to maintain an overall anaerobic environment that permits anaerobic microorganisms to thrive. Even so, obligate anaerobes, especially methanogens, could suffer from oxidative stress during micro-aeration. This review describes the applications of micro-aeration in AD and examines the cutting-edge advances in how methanogens survive under oxygen stress. Moreover, barriers and corresponding solutions are proposed to move micro-aeration technology closer to application at scale.
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Ruxiang C, Ruiying C, Tianyun P, Chunyan H, Tengbing H, Guangliang T. Feeding controls H 2S production in situ in high solid anaerobic digestion. BIORESOUR BIOPROCESS 2022; 9:79. [PMID: 38647616 PMCID: PMC10992255 DOI: 10.1186/s40643-022-00567-7] [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: 04/27/2022] [Accepted: 07/26/2022] [Indexed: 11/10/2022] Open
Abstract
In this study, a high frequency monitoring method was used to assess how semi-continuous feeding affects H2S production in high solid anaerobic digestion. The results showed that H2S characteristics at a monitoring frequency of 1 point/3 h were different to that of 1 point/24 h, its concentration decreased from 3449 ± 227 mg/m3 at 0 h to 298 ± 45 mg/m3 at 3 h. H2S concentration was negatively correlated with volatile fatty acids (VFAs), and oxidation reduction potential (ORP). 72-82% of H2S reduction in the first 3 h resulted from the introduction of O2 during feeding, and 18-28% of that was closely related to the production of a large quantity of soluble acidic matter, such as VFAs. A more accurate H2S release model was established according to the content of VFAs. Totally, this study implies that feed carrying air is a promising method for in situ control of H2S production in anaerobic digestion.
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Affiliation(s)
- Cen Ruxiang
- Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agriculture, Institute of New Rural Development, Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain (Guizhou Province), Guizhou University, Guiyang, 550025, China
| | - Chen Ruiying
- Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agriculture, Institute of New Rural Development, Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain (Guizhou Province), Guizhou University, Guiyang, 550025, China
| | - Pu Tianyun
- Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agriculture, Institute of New Rural Development, Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain (Guizhou Province), Guizhou University, Guiyang, 550025, China
| | - Huang Chunyan
- Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agriculture, Institute of New Rural Development, Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain (Guizhou Province), Guizhou University, Guiyang, 550025, China
| | - He Tengbing
- Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agriculture, Institute of New Rural Development, Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain (Guizhou Province), Guizhou University, Guiyang, 550025, China.
| | - Tian Guangliang
- Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Agriculture, Institute of New Rural Development, Engineering Laboratory for Pollution Control and Resource Reuse Technology of Livestock and Poultry Breeding in Plateau Mountain (Guizhou Province), Guizhou University, Guiyang, 550025, China.
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Cao Q, Zhang W, Lian T, Wang S, Yin F, Zhou T, Zhang H, Zhu J, Dong H. Roles of micro-aeration on enhancing volatile fatty acids and lactic acid production from agricultural wastes. BIORESOURCE TECHNOLOGY 2022; 347:126656. [PMID: 34974096 DOI: 10.1016/j.biortech.2021.126656] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Micro-aeration was proven to be an environmentally friendly strategy for efficiently enhancing volatile fatty acids (VFAs) and lactic acid (LA) production. The roles of micro-aeration on mono-digestion of swine manure (SM) for VFAs production and co-digestion of SM with corn silage (CS) for LA production were investigated, respectively. In this study, micro-aeration increased the maximum VFAs concentration by 20.3% to 35.71 g COD/L, and shortened the time to reach the maximum from 18 days to 10 days. Micro-aeration limited the conversion of LA into VFAs, leading to LA accumulation effectively to be 26.08 g COD/L. Microbial community analysis suggested that Clostridium and Terrisporobacter were always the dominant bacteria with or without micro-aeration for VFAs production, but the relative abundance increased notably during the same period. However, Bifidobacterium, which could use the higher productivity metabolism pathway, i.e., Bifidum pathway to produce LA, increased from lower than 1% to 22.9% by micro-aeration.
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Affiliation(s)
- Qitao Cao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Wanqin Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Tianjing Lian
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Shunli Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Fubin Yin
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Tanlong Zhou
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Haiyan Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Jun Zhu
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA
| | - Hongmin Dong
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
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Li H, Xu Y, Zheng X, Tan L, Cheng W, Zhang C, Wang Q, Yang B, Gao Y. Optimising mixed aerobic and anaerobic composting process parameters for reducing bacterial pathogenicity in compost-derived products. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 304:114293. [PMID: 34915385 DOI: 10.1016/j.jenvman.2021.114293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/19/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Although composting techniques are continuously optimised and adjusted, the removal of bacterial pathogen based on the quality of composting products needs further to ensure safe of agricultural use. In this study, we combined aerobic composting and anaerobic process to determine the optimal combination (turning frequency of once a day, the proportion of swine manure to corn straw (3:1), and mixed 6-day anaerobic process) that benefits the reduction of bacterial pathogens, among which the maximum removal efficiency of up to 92.96% was observed for Clostridium_sensu_stricto_1 reached, thereby improving the quality of the compost products. The variation partition analysis and redundancy analysis indicated that physicochemical factors such as temperature, TOC, and pH significantly affected the removal of bacterial pathogens. Therefore, the additive effects of physicochemical factors on bacterial pathogen removal requires further process optimisation. These findings offer powerful technological support for improving agricultural waste recycling and enhancing the safety of fertiliser application.
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Affiliation(s)
- Houyu Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Yan Xu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Xiangqun Zheng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
| | - Lu Tan
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Weimin Cheng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Chunxue Zhang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Qiang Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Bo Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Yi Gao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
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12
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Wang Y, Mairinger W, Raj SJ, Yakubu H, Siesel C, Green J, Durry S, Joseph G, Rahman M, Amin N, Hassan MZ, Wicken J, Dourng D, Larbi E, Adomako LAB, Senayah AK, Doe B, Buamah R, Tetteh-Nortey JNN, Kang G, Karthikeyan A, Roy S, Brown J, Muneme B, Sene SO, Tuffuor B, Mugambe RK, Bateganya NL, Surridge T, Ndashe GM, Ndashe K, Ban R, Schrecongost A, Moe CL. Quantitative assessment of exposure to fecal contamination in urban environment across nine cities in low-income and lower-middle-income countries and a city in the United States. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 763:143007. [PMID: 34718001 DOI: 10.1016/j.scitotenv.2020.143007] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 10/08/2020] [Accepted: 10/08/2020] [Indexed: 05/23/2023]
Abstract
BACKGROUND During 2014 to 2019, the SaniPath Exposure Assessment Tool, a standardized set of methods to evaluate risk of exposure to fecal contamination in the urban environment through multiple exposure pathways, was deployed in 45 neighborhoods in ten cities, including Accra and Kumasi, Ghana; Vellore, India; Maputo, Mozambique; Siem Reap, Cambodia; Atlanta, United States; Dhaka, Bangladesh; Lusaka, Zambia; Kampala, Uganda; Dakar, Senegal. OBJECTIVE Assess and compare risk of exposure to fecal contamination via multiple pathways in ten cities. METHODS In total, 4053 environmental samples, 4586 household surveys, 128 community surveys, and 124 school surveys were collected. E. coli concentrations were measured in environmental samples as an indicator of fecal contamination magnitude. Bayesian methods were used to estimate the distributions of fecal contamination concentration and contact frequency. Exposure to fecal contamination was estimated by the Monte Carlo method. The contamination levels of ten environmental compartments, frequency of contact with those compartments for adults and children, and estimated exposure to fecal contamination through any of the surveyed environmental pathways were compared across cities and neighborhoods. RESULTS Distribution of fecal contamination in the environment and human contact behavior varied by city. Universally, food pathways were the most common dominant route of exposure to fecal contamination across cities in low-income and lower-middle-income countries. Risks of fecal exposure via water pathways, such as open drains, flood water, and municipal drinking water, were site-specific and often limited to smaller geographic areas (i.e., neighborhoods) instead of larger areas (i.e., cities). CONCLUSIONS Knowledge of the relative contribution to fecal exposure from multiple pathways, and the environmental contamination level and frequency of contact for those "dominant pathways" could provide guidance for Water, Sanitation, and Hygiene (WASH) programming and investments and enable local governments and municipalities to improve intervention strategies to reduce the risk of exposure to fecal contamination.
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Affiliation(s)
- Yuke Wang
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
| | - Wolfgang Mairinger
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Suraja J Raj
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Habib Yakubu
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Casey Siesel
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Jamie Green
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Sarah Durry
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - George Joseph
- Water Global Practice, The World Bank, Washington, DC, USA
| | - Mahbubur Rahman
- Environmental Interventions Unit, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Nuhu Amin
- Environmental Interventions Unit, Infectious Disease Division, International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | | | | | | | - Eugene Larbi
- Training Research and Networking for Development (TREND), Accra, Ghana
| | | | | | - Benjamin Doe
- Training Research and Networking for Development (TREND), Accra, Ghana
| | - Richard Buamah
- Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Gagandeep Kang
- Wellcome Research Laboratory, Christian Medical College, Vellore, India
| | - Arun Karthikeyan
- Wellcome Research Laboratory, Christian Medical College, Vellore, India
| | - Sheela Roy
- Wellcome Research Laboratory, Christian Medical College, Vellore, India
| | - Joe Brown
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Bacelar Muneme
- Water Supply and Mapping, WE Consult, Maputo, Mozambique
| | - Seydina O Sene
- Initiative Prospective Agricole et Rurale (IPAR), Dakar, Senegal
| | - Benedict Tuffuor
- Training Research and Networking for Development (TREND), Accra, Ghana
| | - Richard K Mugambe
- Department of Disease Control and Environmental Health, Makerere University School of Public Health, Kampala, Uganda
| | - Najib Lukooya Bateganya
- Department of Environment and Public Health, Kampala Capital City Authority, Kampala, Uganda
| | - Trevor Surridge
- Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Lusaka, Zambia
| | | | - Kunda Ndashe
- Department of Environmental Health, Faculty of Health Science, Lusaka Apex Medical University, Lusaka, Zambia
| | - Radu Ban
- Bill & Melinda Gates Foundation, Seattle, WA, USA
| | | | - Christine L Moe
- Center for Global Safe Water, Sanitation, and Hygiene, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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13
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Zhou H, Li X, Jin H, She D. Mechanism of a double-channel nitrogen-doped lignin-based carbon on the highly selective removal of tetracycline from water. BIORESOURCE TECHNOLOGY 2022; 325:124710. [PMID: 34979279 DOI: 10.1016/j.biortech.2021.124710] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 05/26/2023]
Abstract
A high-performance nitrogen-doped lignin-based carbon material (ILAC-N) was synthesized using industrial lignin and urea by hydrothermal and activation, as an absorbent of tetracycline hydrochloride (TC). The results showed that the ILAC-N comprises a double-channeled structure with micro and mesopores. It exhibits an excellent adsorption capacity of TC across a wide pH range (pH 2-11), with the highest adsorption capacity of 1396 mg g-1 at 323 K. Tests in actual wastewater showed that the TC removal rate by ILAC-N exceeded 97.4%. Moreover, it maintained a removal rate of 84% after 10 regeneration cycles, revealing its high reusability. Mechanisms suggested that pore filling and π-π interaction played a critical role in this process. In conclusion, ILAC-N can be broadly applied to livestock manure and pharmaceutical wastewater treatment, owing to its high adsorption capacity, good adsorption properties across a wide pH range, excellent reusability. Furthermore, this research opens a new path for lignin utilization.
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Affiliation(s)
- Hanjun Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Xianzhen Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Haoting Jin
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Diao She
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, PR China; Institute of Soil and Water Conservation, CAS&MWR, Yangling 712100, PR China.
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14
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Yang H, Deng L, Wu J, Wang W, Zheng D, Wang Z, Liu Y. Intermittent air mixing system for anaerobic digestion of animal wastewater: Operating conditions and full-scale validation. BIORESOURCE TECHNOLOGY 2021; 335:125304. [PMID: 34029867 DOI: 10.1016/j.biortech.2021.125304] [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: 04/02/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
An air mixing system for anaerobic digestion has been proved to be beneficial for methane production. The aim of the present study was to further investigate the appropriate conditions for air mixing. The effective methane production time (EMPT) was defined to determine the air mixing time in the article. The results indicated that the appropriate aeration intensity was 66.7 mL air per volume of reactor per min and mixing time was 1.5 min. When air mixing time exceeded 3 min on each occasion, total CH4 production was less than that achieved under the no mixing condition due to a decrease in the EMPT. In addition, the possibility of air mixing was evaluated in an anaerobic full-scale plant comprising a continuous stirred tank reactor. One year of operating data validated the feasibility of air mixing during the anaerobic digestion of swine wastewater.
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Affiliation(s)
- Hongnan Yang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Liangwei Deng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China.
| | - Jianwang Wu
- Shijiazhuang Chengding Environmental Protection Technology Co. Ltd., Shijiazhuang 050000, PR China
| | - Wenguo Wang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Dan Zheng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Zhiyong Wang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
| | - Yi Liu
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China; Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu 610041, PR China
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15
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Pan SY, Tsai CY, Liu CW, Wang SW, Kim H, Fan C. Anaerobic co-digestion of agricultural wastes toward circular bioeconomy. iScience 2021; 24:102704. [PMID: 34258548 PMCID: PMC8253966 DOI: 10.1016/j.isci.2021.102704] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
A huge amount of agricultural wastes and waste activated-sludge are being generated every year around the world. Anaerobic co-digestion (AcD) has been considered as an alternative for the utilization of organic matters from such organic wastes by producing bioenergy and biochemicals to realize a circular bioeconomy. Despite recent advancement in AcD processes, the effect of feedstock compositions and operating conditions on the biomethane production processe has not been critically explored. In this paper, we have reviewed the effects of feedstock (organic wastes) characteristics, including particle size, carbon-to-nitrogen ratio, and pretreatment options, on the performance of an anaerobic digestion process. In addition, we provided an overview of the effect of key control parameters, including retention time, temperature, pH of digestate, volatile fatty acids content, total solids content, and organic loading rate. Lastly, based on the findings from the literature, we have presented several perspectives and prospects on priority research to promote AcD to a steppingstone for a circular bioeconomy.
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Affiliation(s)
- Shu-Yuan Pan
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan (ROC)
| | - Cheng-Yen Tsai
- Graduate Institute of Environmental Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan (ROC)
| | - Chen-Wuing Liu
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan (ROC)
| | - Sheng-Wei Wang
- Department of Water Resources and Environmental Engineering, Tamkang University, New Taipei City 25137, Taiwan (ROC)
| | - Hyunook Kim
- Department of Environmental Engineering, The University of Seoul, 163, Seoulsiripdae‑ro, Dongdaemun‑gu, Seoul 02504, South Korea
| | - Chihhao Fan
- Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan (ROC)
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16
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Tišma M, Žnidaršič-Plazl P, Šelo G, Tolj I, Šperanda M, Bucić-Kojić A, Planinić M. Trametes versicolor in lignocellulose-based bioeconomy: State of the art, challenges and opportunities. BIORESOURCE TECHNOLOGY 2021; 330:124997. [PMID: 33752945 DOI: 10.1016/j.biortech.2021.124997] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Although Trametes versicolor is one of the most investigated white-rot fungi, the industrial application of this fungus and its metabolites is still far from reaching its full potential. This review aims to highlight the opportunities and challenges for the industrial use of T. versicolor according to the principles of circular bioeconomy. The use of this fungus can contribute significantly to the success of efforts to valorize lignocellulosic waste biomass and industrial lignocellulosic byproducts. Various techniques of T. versicolor cultivation for enzyme production, food and feed production, wastewater treatment, and biofuel production are listed and critically evaluated, highlighting bottlenecks and future perspectives. Applications of T. versicolor crude laccase extracts in wastewater treatment, removal of lignin from lignocellulose, and in various biotransformations are analyzed separately.
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Affiliation(s)
- Marina Tišma
- Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, HR-31000 Osijek, Croatia.
| | - Polona Žnidaršič-Plazl
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Gordana Šelo
- Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, HR-31000 Osijek, Croatia
| | - Ivana Tolj
- Josip Juraj Strossmayer University of Osijek, University Hospital Center of Osijek, Clinical of Internal Medicine, Department of Nephrology, Josipa Hutlera 4, HR-31000 Osijek, Croatia
| | - Marcela Šperanda
- Josip Juraj Strossmayer University of Osijek, Faculty of Agrobiotechnical Sciences Osijek, Vladimira Preloga 1, HR - 31000 Osijek, Croatia
| | - Ana Bucić-Kojić
- Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, HR-31000 Osijek, Croatia
| | - Mirela Planinić
- Josip Juraj Strossmayer University of Osijek, Faculty of Food Technology Osijek, Franje Kuhača 18, HR-31000 Osijek, Croatia
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17
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Cao Q, Zhang W, Lian T, Wang S, Dong H. Short chain carboxylic acids production and dynamicity of microbial communities from co-digestion of swine manure and corn silage. BIORESOURCE TECHNOLOGY 2021; 320:124400. [PMID: 33220542 DOI: 10.1016/j.biortech.2020.124400] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
Short chain carboxylic acids (SCCAs) have attracted much attention due to their wide application and benefit of high economy. This study investigated the influence of organic load rates (OLRs) on short-chain carboxylic acids (SCCAs) production and microbial communities for co-digestion of swine manure (SM) and corn silage (CS) during four different OLRs stages in a semi-continuous mode. The results showed that relatively stable SCCAs concentration of 10.5-13.6 g COD/L and SCCAs yield of 0.42 mg COD/mg VS was achieved at OLR of 3.0 g VS/L·d. The maximum concentration of 19.1 g COD/L was achieved at 3.5 g VS/L·d. Volatile fatty acids (VFAs) (include acetic, n-butyric and caproic acids) accounted for approximately 80% of SCCAs. Hydrolysis bacteria (HB) including Clostridium, Terriporobacter, Intestinibacter, and Turiibacter decreased with the increase of OLR, while acidogenic bacteria (AB) including Acetobacter, Lactobacillus, Aeriscardovia, and Pseudomonas increased, resulting in insufficient degradation of CS.
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Affiliation(s)
- Qitao Cao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Energy Conservation and Waste Treatment of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China
| | - Wanqin Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Energy Conservation and Waste Treatment of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China
| | - Tianjing Lian
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Energy Conservation and Waste Treatment of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China
| | - Shunli Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Energy Conservation and Waste Treatment of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China
| | - Hongmin Dong
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Energy Conservation and Waste Treatment of Agricultural Structures, Ministry of Agriculture, Beijing 100081, China.
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