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Geng H, Xu Y, Dai X, Yang D. Abiotic and biotic roles of metals in the anaerobic digestion of sewage sludge: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169313. [PMID: 38123094 DOI: 10.1016/j.scitotenv.2023.169313] [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: 10/24/2023] [Revised: 12/09/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023]
Abstract
Anaerobic digestion (AD) is a promising technique for sludge treatment and resource recovery. Metals are very important components of sludge and can have substantial effects on its complex nature and microbial activity. However, systematic reviews have not addressed how metals in sludge affect AD and how they can be regulated to improve AD. This paper comprehensively reviews the effects of metals on the AD of sludge from both abiotic and biotic perspectives. First, we introduce the contents and basic characteristics (e.g., chemical forms) of intrinsic metals in sewage sludge. Then, we summarise the main mechanism by which metals influence sludge properties and the methods for removing metals and thus improving AD. Next, we analyze the effects of both intrinsic and exogenous metals on the enzymes and microbial communities involved in anaerobic bioconversion, focusing on the types, critical concentrations and valence states of the metals. Finally, we propose ideas for future research on the roles of metals in the AD of sludge. In summary, this review systematically clarifies the roles of metals in the AD of sludge and provides a reference for improving AD by regulating these metals.
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Affiliation(s)
- Hui Geng
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Ying Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
| | - Xiaohu Dai
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Dianhai Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
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Wang Z, Wang S, Zhuang W, Liu J, Meng X, Zhao X, Zheng Z, Chen S, Ying H, Cai Y. Trace elements' deficiency in energy production through methanogenesis process: Focus on the characteristics of organic solid wastes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:163116. [PMID: 36996981 DOI: 10.1016/j.scitotenv.2023.163116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/28/2023] [Accepted: 03/23/2023] [Indexed: 05/13/2023]
Abstract
Excessive or insufficient supplementation of trace elements (TEs) limits the progression of anaerobic digestion. The main reason for this is the lack of sufficient understanding of digestion substrate characteristics, which significantly affects the demand for TEs. In this review, the relationship between TEs requirements and substrate characteristics is discussed. We mainly focus on three aspects. 1) The basis for TE optimization and existing problems: The optimization of TEs often based on the total solids (TS) or volatile solids (VS) of substrates, does not fully consider substrate characteristics. 2) TE deficiency mechanisms for different types of substrates: nitrogen-rich, sulfur-rich, TE-poor, and easily hydrolyzed substrates are the four main types of substrates. The mechanisms underlying TEs deficiency in the different substrates are investigated. 3) Regulation of TE bioavailability: characteristics of substrates affect digestion parameters, which disturb the bioavailability TE. Therefore, methods for regulating bioavailability of TEs are discussed.
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Affiliation(s)
- Zhi Wang
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China
| | - Shilei Wang
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China
| | - Wei Zhuang
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China; National Engineering Technique Research Center for Biotechnology, State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Jinle Liu
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China
| | - Xingyao Meng
- Beijing Technology and Business University, State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing 100048, China
| | - Xiaoling Zhao
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China
| | - Zehui Zheng
- College of Agronomy and Biotechnology/Biomass Engineering Center, China Agricultural University, Beijing 100193, China
| | - Shanshuai Chen
- Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya 572025, China
| | - Hanjie Ying
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China; National Engineering Technique Research Center for Biotechnology, State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Yafan Cai
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, China.
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Li J, Chen Q, Fan Y, Wang F, Meng J. Improved methane production of two-phase anaerobic digestion by cobalt: efficiency and mechanism. BIORESOURCE TECHNOLOGY 2023; 381:129123. [PMID: 37146694 DOI: 10.1016/j.biortech.2023.129123] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/07/2023]
Abstract
Two-phase anaerobic digestion (AD) is a promising technology, but its performance is sensitive to methanogen. In this study, the effect of cobalt (Co) on two-phase AD was investigated and the enhanced mechanism was revealed. Though no obvious effect of Co2+ was observed in acidogenic phase, the activity of methanogens was significantly affected by Co2+ with an optimal Co2+ concentration of 2.0 mg/L. Ethylenediamine-N'-disuccinic acid (EDDS) was the most effective for improving Co bioavailability and increasing methane production. The role of Co-EDDS in improving methanogenic phase was also verified by operating three reactors for two months. The Co-EDDS supplement increased the level of Vitamin B12 (VB12) and coenzyme F420, and enriched Methanofollis and Methanosarcina, thereby successfully improving methane production and accelerating reactor recovery from ammonium and acid wastewater treatment. This study provides a promising approach to improve the efficiency and stability of anaerobic digester.
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Affiliation(s)
- Jianzheng Li
- National Engineering Research Centre for Safe Sludge Disposal and Resource Recovery, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qiyi Chen
- National Engineering Research Centre for Safe Sludge Disposal and Resource Recovery, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yiyang Fan
- National Engineering Research Centre for Safe Sludge Disposal and Resource Recovery, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Furao Wang
- National Engineering Research Centre for Safe Sludge Disposal and Resource Recovery, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jia Meng
- National Engineering Research Centre for Safe Sludge Disposal and Resource Recovery, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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Effects of Increasing Concentrations of Enrofloxacin on Co-Digestion of Pig Manure and Corn Straw. SUSTAINABILITY 2022. [DOI: 10.3390/su14105894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Enrofloxacin (ENR) is one of the most commonly used antibiotics in pig farms. In this study, using fresh pig manure and corn straw powder as substrates, the effects of different concentrations of ENR (2.5, 10, and 20 mg/L) on anaerobic digestion in completely mixed anaerobic reactors were investigated. A relatively low concentration of ENR (2.5 mg/L) increased methane production by 47.58% compared with the control group. Among the volatile fatty acids (VFAs) in the reactors, the propionic acid content was the lowest, and the concentrations of acetic acid kinase and coenzyme F420 were highest in the first seven days during peak gas production. However, methane production in the reactors with 10 mg/L and 20 mg/L ENR decreased by 8.59% and 20.25%, respectively. Furthermore, the accelerated hydrolysis of extracellular polymeric substances causes a significant accumulation of VFA levels. The microbial community in anaerobic reactors was analyzed by 16S rRNA sequencing. Proteiniphilum was the dominant bacterial genus. In addition, ENR at 2.5 mg/L effectively increased the abundance and diversity of anaerobic microorganisms, whereas a high concentration of ENR (10 and 20 mg/L) significantly decreased these parameters. This study demonstrated that different concentrations of ENR had significantly different effects on anaerobic digestion.
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Cai Y, Janke L, Meng X, Zheng Z, Zhao X, Pröter J, Schäfer F. The absolute concentration and bioavailability of trace elements: Two vital parameters affecting anaerobic digestion performance of chicken manure leachate. BIORESOURCE TECHNOLOGY 2022; 350:126909. [PMID: 35227919 DOI: 10.1016/j.biortech.2022.126909] [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: 01/03/2022] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
It is currently unclear whether trace elements (TEs) deficiency is due to low bioavailability or low absolute TEs concentrations, especially in high-pH anaerobic digestion (AD) systems. A mixed solution of TEs and EDTA-Na2 were used separately in mono-AD of chicken manure (CM) leachate to investigate this research gap. The results showed relatively low bioavailability of Fe, Mn, and Zn. The bioavailability of all TEs remained stable along with a gradual increase in total ammonia nitrogen concentration. Both TE and EDTA-Na2 supplementation improved the bioavailability of TEs, but TEs supplementation also gave a high proportion of soluble TEs. Adding TEs improved methane production efficiency (+38.3%) and decreased the H2S content. The exchangeable fraction of specific TE (Mo) in H2/CO2 pathway was higher in the TEs treatment. TEs bioavailability and absolute concentrations of available TEs are critical aspects that need to be scrutinized to assess the risk of TEs deficiency.
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Affiliation(s)
- Yafan Cai
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, PR China; Department of Biochemical Conversion, Deutsches Biomassforschungszentrum gemeinnützige GmbH, Torgauer Straße116, 04347 Leipzig, Germany.
| | - Leandro Janke
- Department of Biochemical Conversion, Deutsches Biomassforschungszentrum gemeinnützige GmbH, Torgauer Straße116, 04347 Leipzig, Germany; Department of Energy and Technology, Swedish University of Agricultural Sciences, Box 7032, 750 07 Uppsala, Sweden
| | - Xingyao Meng
- Beijing Technology and Business University, State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing 100048, PR China
| | - Zehui Zheng
- College of Agronomy and Biotechnology/Biomass Engineering Center, China Agricultural University, Beijing 100193, PR China
| | - Xiaoling Zhao
- School of Chemical Engineering, Zhengzhou University, Kexue Dadao 100, 450001 Zhengzhou, PR China
| | - Jürgen Pröter
- Department of Biochemical Conversion, Deutsches Biomassforschungszentrum gemeinnützige GmbH, Torgauer Straße116, 04347 Leipzig, Germany
| | - Franziska Schäfer
- Department of Biochemical Conversion, Deutsches Biomassforschungszentrum gemeinnützige GmbH, Torgauer Straße116, 04347 Leipzig, Germany.
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Li X, Mo H, Zhou C, Ci Y, Wang J, Zang L. Nickel Foam Promotes Syntrophic Metabolism of Propionate and Butyrate in Anaerobic Digestion. ACS OMEGA 2021; 6:21033-21042. [PMID: 34423211 PMCID: PMC8375088 DOI: 10.1021/acsomega.1c02682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/26/2021] [Indexed: 05/16/2023]
Abstract
Enhanced interspecies electron transfer (IET) among symbiotic microorganisms is an effective method to increase the rate of methane (CH4) production in anaerobic digestion. Direct interspecies electron transfer (DIET), which does not involve dissolved redox media, is considered an alternative and superior method to enhance methane production by interspecific hydrogen (H2) transfer (IHT). In this study, nickel foam was built into a semicontinuous anaerobic reactor to investigate its effect on the metabolism of propionate and butyrate. Both increased the average yield of CH4 in anaerobic digestion by 18.1 and 15.9%, respectively. Analysis of bacterial and archaeal communities showed that the addition of nickel foam could increase the relative abundance of microbial communities involved in DIET and could increase the diversity of microorganisms in the reactor. Moreover, the anaerobic digestion performance of the nickel foam reactor was good at high hydrogen partial pressure.
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Affiliation(s)
- Xueyuan Li
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Haoe Mo
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Chengxuan Zhou
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Yuhui Ci
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Jinwei Wang
- Weifang
yingxuan Industry Co., Ltd., Weifang 262499, China
| | - Lihua Zang
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
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