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Luo W, Tian H, Tan W, Tan Q. Effect of hydrothermal-acid pretreatment on methane yield and microbial community in anaerobic digestion of rice straw. BIORESOURCE TECHNOLOGY 2024; 402:130765. [PMID: 38692372 DOI: 10.1016/j.biortech.2024.130765] [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: 01/22/2024] [Revised: 04/04/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
Hydrothermal pretreatment has been proposed to enhance straw methane yield during anaerobic digestion recently. However, the combined effect of hydrothermal and organic acid pretreatment (HTOAP) needs further investigation. This study identified optimal pretreatment at 120 °C with 3 % acetic acid for 24 h by orthogonal design method. The HTOAP increased the reducing sugar content by destroying the lignocellulosic structure. A 79 % increment of methane production after HTOAP was observed compared to the untreated group. Microbial analysis showed that HTOAP enriched the relative abundance of lignocellulose-degraders, such as W5053, Thermanaerovibrio, Caldicoprobacter, as well as the syntrophic acetate oxidizing bacteria Syntrophaceticus. Moreover, Methanobacterium conducted hydrogenotrophic methanogenesis dominantly. Furthermore, the potential function analysis showed that HTOAP stimulated the expression of key enzymes in the hydrogenotrophic pathway, including carbon-monoxide dehydrogenase (EC 1.2.7.4) and coenzyme F420 hydrogenase (EC 1.12.98.1). This investigation illustrated the potential of HTOAP of rice straw to facilitate methane production.
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Affiliation(s)
- Wei Luo
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Hailin Tian
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Wenxia Tan
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Qian Tan
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China.
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Ngo T, Khudur LS, Krohn C, Hassan S, Jansriphibul K, Hakeem IG, Shah K, Surapaneni A, Ball AS. Wood biochar enhances methanogenesis in the anaerobic digestion of chicken manure under ammonia inhibition conditions. Heliyon 2023; 9:e21100. [PMID: 37920507 PMCID: PMC10618790 DOI: 10.1016/j.heliyon.2023.e21100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/28/2023] [Accepted: 10/16/2023] [Indexed: 11/04/2023] Open
Abstract
The process of breaking down chicken manure through anaerobic digestion is an effective waste management technology. However, chicken manure can be a challenging feedstock, causing ammonia stress and digester instability. This study examined the impacts of adding wood biochar and acid-alkali-treated wood biochar to anaerobically digest chicken manure under conditions of ammonia inhibition. The results highlighted that only the addition of 5 % acid-alkali-treated wood biochar by volume can achieve cumulative methane production close to the typical methane potential range of chicken manure. The treated wood biochar also exhibited highest total ammonia nitrogen removal compared to the Control treatment. Scanning Electron Microscope revealed growing interactions between biochar and methanogens over time. Real-time polymerase chain reaction showed that treated wood biochar produced the highest number of bacterial biomass. In addition, 16S amplicon-based sequencing identified a more robust archaeal community from treated biochar addition. Overall, the acid-alkali treatment of biochar represents an effective method of modifying biochar to improve its performance in anaerobic digestion.
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Affiliation(s)
- Tien Ngo
- School of Science, RMIT University, Melbourne, VIC 3083, Australia
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
| | - Leadin S. Khudur
- School of Science, RMIT University, Melbourne, VIC 3083, Australia
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
| | - Christian Krohn
- School of Science, RMIT University, Melbourne, VIC 3083, Australia
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
| | - Soulayma Hassan
- School of Science, RMIT University, Melbourne, VIC 3083, Australia
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
| | - Kraiwut Jansriphibul
- School of Science, RMIT University, Melbourne, VIC 3083, Australia
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
| | - Ibrahim Gbolahan Hakeem
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Kalpit Shah
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Aravind Surapaneni
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
- South East Water, 101 Wells Street, Frankston, VIC 3199, Australia
| | - Andrew S. Ball
- School of Science, RMIT University, Melbourne, VIC 3083, Australia
- ARC Training Centre for the Transformation of Australia's Biosolids Resource, RMIT University, Bundoora, VIC 3083, Australia
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Liu C, Zhuang J, Xue J, Peng M, Zhang W, Mao L. Passivation mechanism of Cu and Zn with the introduction of composite passivators during anaerobic digestion of pig manure. BIORESOURCE TECHNOLOGY 2023; 369:128360. [PMID: 36423767 DOI: 10.1016/j.biortech.2022.128360] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/14/2022] [Accepted: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Heavy metals in livestock manure pose a threat to the environment after biogas fertilizer being utilized, while its bioavailability is reduced substantially by passivator during the anaerobic digestion. In this study, an optimal composite passivator of humic acid, fly ash and biochar with proportion of 7.5%:7.5%:7.5% and 5.0%:7.5%:7.5% is obtained and the passivation mechanism on Cu and Zn during anaerobic digestion of pig manure is explored. The content of humic acid (HA) in biogas residue increased by 15.66-27.82%, which promoted the transformation from FA-Cu/Zn to HA-Cu/Zn and was beneficial to the passivation of Cu and Zn. The bioavailability of Cu and Zn was reduced by the adsorption and complexation at the early and middle stages of anaerobic digestion. Humic substances play a major role in the passivation of heavy metals at the late stage. The composite passivator can improve the humification degree of biogas residue and reduce heavy metal biotoxicity.
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Affiliation(s)
- Cunlan Liu
- School of Environmental Science & Engineering, Changzhou University, Changzhou 213164, China
| | - Jie Zhuang
- School of Environmental Science & Engineering, Changzhou University, Changzhou 213164, China
| | - Jinhui Xue
- School of Environmental Science & Engineering, Changzhou University, Changzhou 213164, China
| | - Mingguo Peng
- School of Environmental Science & Engineering, Changzhou University, Changzhou 213164, China
| | - Wenyi Zhang
- School of Environmental Science & Engineering, Changzhou University, Changzhou 213164, China.
| | - Linqiang Mao
- School of Environmental Science & Engineering, Changzhou University, Changzhou 213164, China.
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Rizzioli F, Bertasini D, Bolzonella D, Frison N, Battista F. A critical review on the techno-economic feasibility of nutrients recovery from anaerobic digestate in the agricultural sector. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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