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Zhao Y, Wei R, He D, Niu D, Zhou T. Enhanced volatile fatty acid production from food waste via anaerobic fermentation: effect of irons with different sizes. ENVIRONMENTAL TECHNOLOGY 2024; 45:50-60. [PMID: 35792808 DOI: 10.1080/09593330.2022.2099309] [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: 03/10/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
ABSTRACTFood waste is an excellent organic matter for anaerobic fermentation. This study provided a cost-effective and highly efficient volatile fatty acid (VFA) production strategy by the addition of zero-valent iron (ZVI). Results showed that VFA concentration of 44.6 g/L was obtained with the optimized conditions of 200-mesh iron powder at a dosage of 20.0 g, fermentation time of 11 d, total solids (TS) of 10 wt.%, and fermentation temperature of 37 ℃. Further, the iron of different particle sizes (iron scraps, 200-mesh iron powder, and 800-mesh iron powder) had a differential influence on total organic carbon (TOC), total nitrogen (TN), and VFA concentrations. For the reactor containing 200-mesh iron powder, the conversion rate of organic compound into VFA increased with the increase of dosage, which reached 58.4% at the 40.0 g dosage. The mechanism revealed that the VFA production was enhanced by micro-electrolysis, which can rapidly inactivate bacteria and increase the conversion of macromolecular organics into micromolecular organics.
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Affiliation(s)
- Youcai Zhao
- The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, People's Republic of China
| | - Ran Wei
- The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, People's Republic of China
| | - Dongwei He
- The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China
| | - Dongjie Niu
- The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China
| | - Tao Zhou
- The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, People's Republic of China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, People's Republic of China
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Tsigkou K, Zagklis D, Parasoglou M, Zafiri C, Kornaros M. Proposed protocol for rate-limiting step determination during anaerobic digestion of complex substrates. BIORESOURCE TECHNOLOGY 2022; 361:127660. [PMID: 35872279 DOI: 10.1016/j.biortech.2022.127660] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/13/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
Anaerobic digestion is a complex process, involving various microorganism groups and, consequently, several reactions. An easy-to-use protocol for the rate-limiting step determination of the process is proposed. The hydrogen production, acetate production, and acetate consumption rates can be calculated, according to a structured algorithm. During the rate limiting step determination, several compounds (biopolymer and monomer representatives, as well as sodium acetate) were used, combined or not with the substrate, to draw the corresponding conclusions. Three substrates were tested, characterized by specific organic compound groups (carbohydrates, proteins, and fats). All three substrates followed the acetate-consuming pathway for the organic matter conversion to methane. In this study, the rate-limiting step for the pathway of acetate consumption was acetate production. Determining the rate-limiting step through the proposed protocol can point to the appropriate actions needed to boost methane production, like substrate pretreatment, using an acidogenic reactor, or checking for the presence of inhibitors.
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Affiliation(s)
- Konstantina Tsigkou
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Dept. of Chemical Engineering, University of Patras, 1 Karatheodori Str, 26504 Patras, Greece
| | - Dimitris Zagklis
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Dept. of Chemical Engineering, University of Patras, 1 Karatheodori Str, 26504 Patras, Greece
| | - Marina Parasoglou
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Dept. of Chemical Engineering, University of Patras, 1 Karatheodori Str, 26504 Patras, Greece
| | - Constantina Zafiri
- Green Technologies Ltd., 5 Ellinos Stratiotou Str., Patras 26223, Greece
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Dept. of Chemical Engineering, University of Patras, 1 Karatheodori Str, 26504 Patras, Greece.
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Wang Y, Zhang Y, Li J, Lin JG, Zhang N, Cao W. Biogas energy generated from livestock manure in China: Current situation and future trends. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 297:113324. [PMID: 34298348 DOI: 10.1016/j.jenvman.2021.113324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/08/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
This article investigates the current status of the livestock industry (cattle, pigs, sheep, and poultry) in China and assesses the potential for biogas production from anaerobically digested livestock manure. According to calculation results based on the latest data of livestock released by the National Bureau of Statistics of China in 2018, China produced 2 × 1012 kg of manure pollution in 2017, with pig waste representing the largest single manure source. Biogas that can be converted from high organic containing manure is a kind of clean bioenergy with low carbon footprint. In 2017, the energy potential from manure-produced biogas was about 5.74 × 1012-6.73 × 1012 MJ, which corresponds to 4-5% of China's total energy demand. Correlation analysis between biogas production and the livestock industry showed that crop production had significant effects on manure-generated biogas production. However, it is necessary to address the challenges when applying AD technology. Bioenergy potential from manure will be lost during material collection and transportation. Although large-scale livestock farming remains controversial, this type of farming can improve the energy recovery rate of livestock manure. How to gain benefits and maintain sustainable development is also a bottleneck for AD promotion. Reducing energy input in AD projects as well as enhancing the efficiency of methanogenesis of livestock manure are key factors for achieving a high net output of biogas projects. More inclusive strategies and a broader vision should be adopted to allow stakeholders to benefit from manure-generated biogas projects.
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Affiliation(s)
- Yuzheng Wang
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, Fujian, 361102, China
| | - Yanlong Zhang
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, Fujian, 361102, China; Fujian Key Laboratory of Coastal Pollution Prevention and Control (CPPC), College of Environment and Ecology, Xiamen University, Xiamen, Fujian, 361102, China.
| | - Junxin Li
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China; Construction & Development Co., Ltd. of China Construction Fourth Bureau, Xiamen, Fujian, 361000, China
| | - Jih-Gaw Lin
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, Fujian, 361102, China; Institute of Environmental Engineering, National Chiao Tung University, 1001 University Road, Hsinchu, 30010, Taiwan
| | - Ning Zhang
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, Fujian, 361102, China
| | - Wenzhi Cao
- State Key Laboratory of Marine Environmental Science, College of Environment and Ecology, Xiamen University, Xiamen, Fujian, 361102, China
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The significance of microbial community functions and symbiosis in enhancing methane production during anaerobic digestion: a review. Symbiosis 2020. [DOI: 10.1007/s13199-020-00734-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Ta DT, Lin CY, Ta TMN, Chu CY. Biohythane production via single-stage anaerobic fermentation using entrapped hydrogenic and methanogenic bacteria. BIORESOURCE TECHNOLOGY 2020; 300:122702. [PMID: 31918294 DOI: 10.1016/j.biortech.2019.122702] [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: 11/05/2019] [Revised: 12/24/2019] [Accepted: 12/26/2019] [Indexed: 06/10/2023]
Abstract
This study demonstrates the continuous biohythane production in a single-stage anaerobic digester using a biomass mixture of separately entrapped hydrogenic and methanogenic bacteria (H2- and CH4-producing bacteria, respectively). The entrapped hydrogenic/methanogenic bacteria biomass ratios of 1/4, 2/3, 3/2 and 4/1 were tested and shown to have a great effect on the single-stage biohythane production performance. At steady-states, the cultivations had biohythane production rates in the range of 381-480 mL/L-d, with H2 content in biohythane (HCH) varying from 1% to 75% (v/v) and chemical oxygen demand removal efficiencies (TCODre) of 57.6-81.9%. Biomass ratio 2/3 (weight ratio 1/1.5) resulted in peak biohythane production with H2 and CH4 production rates being 64.6 and 395 mL/L-d, respectively, HCH 15% and TCODre 74.4%. The novelty of this work is to show the potential of producing biohythane from an innovative single-stage dark fermentation system using entrapped hydrogenic and methanogenic bacteria.
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Affiliation(s)
- Doan Thanh Ta
- Department of Environmental Engineering and Science, Feng Chia University, Taiwan
| | - Chiu-Yue Lin
- Department of Environmental Engineering and Science, Feng Chia University, Taiwan; Green Energy and Biotechnology Industry Development Research Center, Feng Chia University, Taiwan.
| | - Thi Minh Ngoc Ta
- Faculty of Food Technology, Nhatrang University, Viet Nam; Food Technology Department, Ho Chi Minh City University of Technology, Viet Nam
| | - Chen-Yeon Chu
- Green Energy and Biotechnology Industry Development Research Center, Feng Chia University, Taiwan; Institute of Green Products, Feng Chia University, Taiwan
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Zeb BS, Mahmood Q, Ping Z, Lin Q, Lu HF, Tingting C, Abbas G. Assessment of toxicity of volatile fatty acids to Photobacterium phosphoreum. Microbiology (Reading) 2014. [DOI: 10.1134/s0026261714050294] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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