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Hou T, Zhou Y, Du R, Liu J, Li W, Zhang S, Li M, Chu J, Meng L. Insights into effects of thermotolerant nitrifying and sulfur-oxidizing inoculants on nitrogen-sulfur co-metabolism in sewage sludge composting. J Environ Sci (China) 2024; 144:76-86. [PMID: 38802240 DOI: 10.1016/j.jes.2023.08.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 08/29/2023] [Accepted: 08/29/2023] [Indexed: 05/29/2024]
Abstract
In this study, high temperature thermotolerant nitrifying bacteria (TNB) and high temperature thermotolerant sulfide oxidizing bacteria (TSOB) were obtained from compost samples and inoculated into sewage sludge (SS) compost. The effects of inoculation on physical and chemical parameters, ammonia and hydrogen sulfide release, nitrogen form and sulfur compound content change and physical-chemical properties during nitrogen and sulfur conversion were studied. The results showed that inoculation of TNB and TSOB increased the temperature, pH, OM degradation, C/N ratio and germination index (GI) of compost. Compared with the control treatment (CK), the addition of inoculants reduced the release of NH3 and H2S, and transformed them into nitrogen and sulfur compounds, the hydrolysis of polymeric ferrous sulfate was promoted, resulting in relatively high content of sulfite and sulfate. At the same time, the physical and chemical properties of SS have a strong correlation with nitrogen and sulfur compounds.
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Affiliation(s)
- Tingting Hou
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China
| | - Yujie Zhou
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Rongchun Du
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China
| | - Jiali Liu
- Hebei University of Environmental Engineering, Hebei Key Laboratory of Agroecological Safety, Qinhuangdao 066102, China
| | - Weiguang Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shumei Zhang
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China
| | - Muzi Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Junhong Chu
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Liqiang Meng
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China.
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2
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Su J, Zhou K, Chen W, Xu S, Feng Z, Chang Y, Ding X, Zheng Y, Tao X, Zhang A, Wang Y, Li J, Ding G, Wei Y. Enhanced organic degradation and microbial community cooperation by inoculating Bacillus licheniformis in low temperature composting. J Environ Sci (China) 2024; 143:189-200. [PMID: 38644016 DOI: 10.1016/j.jes.2023.08.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/25/2023] [Accepted: 08/29/2023] [Indexed: 04/23/2024]
Abstract
Microbial activity and interaction are the important driving factors in the start-up phase of food waste composting at low temperature. The aim of this study was to explore the effect of inoculating Bacillus licheniformis on the degradation of organic components and the potential microbe-driven mechanism from the aspects of organic matter degradation, enzyme activity, microbial community interaction, and microbial metabolic function. The results showed that after inoculating B. licheniformis, temperature increased to 47.8°C on day 2, and the degradation of readily degraded carbohydrates (RDC) increased by 31.2%, and the bioheat production increased by 16.5%. There was an obvious enhancement of extracellular enzymes activities after inoculation, especially amylase activity, which increased by 7.68 times on day 4. The inoculated B. licheniformis colonized in composting as key genus in the start-up phase. Modular network analysis and Mantel test indicated that inoculation drove the cooperation between microbial network modules who were responsible for various organic components (RDC, lipid, protein, and lignocellulose) degradation in the start-up phase. Metabolic function prediction suggested that carbohydrate metabolisms including starch and sucrose metabolism, glycolysis / gluconeogenesis, pyruvate metabolism, etc., were improved by increasing the abundance of related functional genes after inoculation. In conclusion, inoculating B. licheniformis accelerated organic degradation by driving the cooperation between microbial network modules and enhancing microbial metabolism in the start-up phase of composting.
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Affiliation(s)
- Jing Su
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Kaiyun Zhou
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Wenjie Chen
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Shaoqi Xu
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Ziwei Feng
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Yuan Chang
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Xiaoyan Ding
- Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Yi Zheng
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Xingling Tao
- Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Ake Zhang
- Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China; Fuyang Academy of Agricultural Sciences, Fuyang 236065, China
| | - Yue Wang
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Ji Li
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China
| | - Guochun Ding
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China.
| | - Yuquan Wei
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, Suzhou 215128, China.
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3
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Zhu X, Yuan J, Qu H, Hou F, Mao C, Lei J, Cao X, Li L. Effects of different proportions of fruit tree branches on nicotine content and microbial diversity during composting of tobacco waste. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 365:121568. [PMID: 38936024 DOI: 10.1016/j.jenvman.2024.121568] [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: 03/26/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/29/2024]
Abstract
Adding fruit tree branches to the compost pile in appropriate proportions is one of the methods used to address the challenge of tobacco waste recycling. However, the effects of different proportions of fruit tree branches on nicotine concentration and microbial diversity during tobacco waste composting have not been reported. In this study, a composting system with tobacco waste, cow dung, and fruit tree branches was established in a laboratory fermenter to assess the impact of adding 10%, 20%, and 30% fruit tree branches on quantity changes. In addition, the relationships between nicotine degradation, compost properties, enzyme activities, and microbial diversities were determined using biochemical assay methods and high-throughput sequencing. The results showed that adding appropriate proportions of fruit branch segments affected changes in physical and chemical properties during composting and promoted tobacco waste compost maturity. Aerobic composting effectively degraded nicotine in tobacco waste. Increased proportions of fruit branch segments led to elevations in nicotine degradation rates and enzyme activities related to lignocellulose degradation. The addition of fruit branches influenced the relative abundance and species of dominant bacteria and fungi at the phylum and genus levels. However, it did not significantly affect the relative abundance of the main bacterial genera involved in nicotine degradation. Nevertheless, it reduced the sensitivity of enzyme activity to nicotine content within heaps, increasing reliance on total nitrogen changes. The results of this study provide a theoretical basis for the utilization of tobacco waste in composting systems and indicate that fruit tree branches can enhance nicotine degradation efficiency during tobacco waste composting.
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Affiliation(s)
- Xiaoping Zhu
- Shanxi Agricultural University, Taiyuan, Shanxi, 030031, PR China
| | - Jiali Yuan
- Shanxi Agricultural University, Taiyuan, Shanxi, 030031, PR China
| | - Haoli Qu
- Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing, Jiangsu, 210014, PR China
| | - Fuen Hou
- Shanxi Agricultural University, Taiyuan, Shanxi, 030031, PR China
| | | | - Jun Lei
- Shanxi Kunming Tobacco Co., Ltd, PR China
| | - Xiuli Cao
- Shanxi Kunming Tobacco Co., Ltd, PR China.
| | - Lei Li
- Shanxi Agricultural University, Taiyuan, Shanxi, 030031, PR China.
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4
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Chu XL, Peng XY, Sun ZY, Xie CY, Tang YQ. Converting kitchen waste into value-added fertilizer using thermophilic semi-continuous composting-biofiltration two-stage process with minimized NH 3 emission. BIORESOURCE TECHNOLOGY 2024; 406:130955. [PMID: 38871228 DOI: 10.1016/j.biortech.2024.130955] [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: 02/07/2024] [Revised: 06/10/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
Thermophilic semi-continuous composting (TSC) is effective for kitchen waste (KW) treatment, but large amounts of NH3-rich odorous gas are generated. This study proposes a TSC-biofiltration (BF) two-stage process. Compost from the front-end TSC was used as the packing material in the BF to remove NH3 from the exhaust gas. The BF process was effective in removing up to 83.7 % of NH3, and the NH3 content was reduced to < 8 ppm. Seven days of BF improved the quality of the product from TSC by enhancing the germination index to 134.6 %, 36.5 % higher than that in the aerated-only group. Microbial community analysis revealed rapid proliferation and eventual dominance in the BF of members related to compost maturation and the nitrogen cycle from Actinobacteria, Proteobacteria, Chloroflexi, and Bacteroidetes. The results suggest that the TSC-BF two-stage process is effective in reducing NH3 emissions from TSC and improving compost quality.
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Affiliation(s)
- Xiu-Lin Chu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, Sichuan, China
| | - Xiang-Yu Peng
- College of Architecture and Environment, Sichuan University, Chengdu 610065, Sichuan, China
| | - Zhao-Yong Sun
- College of Architecture and Environment, Sichuan University, Chengdu 610065, Sichuan, China.
| | - Cai-Yun Xie
- College of Architecture and Environment, Sichuan University, Chengdu 610065, Sichuan, China.
| | - Yue-Qin Tang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, Sichuan, China
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Zhao M, Luo Z, Wang Y, Liao H, Yu Z, Zhou S. Phage lysate can regulate the humification process of composting. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 178:221-230. [PMID: 38412754 DOI: 10.1016/j.wasman.2024.02.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/24/2024] [Accepted: 02/22/2024] [Indexed: 02/29/2024]
Abstract
Phages play a crucial role in orchestrating top-down control within microbial communities, influencing the dynamics of the composting process. Despite this, the impact of phage-induced thermophilic bacterial lysis on humification remains ambiguous. This study investigates the effects of phage lysate, derived explicitly from Geobacillus subterraneus, on simulated composting, employing ultrahigh-resolution mass spectrometry and 16S rRNA sequencing techniques. The results show the significant role of phage lysate in expediting humus formation over 40 days. Notably, the rapid transformation of protein-like precursors released from phage-induced lysis of the host bacterium resulted in a 14.8 % increase in the proportion of lignins/CRAM-like molecules. Furthermore, the phage lysate orchestrated a succession in bacterial communities, leading to the enrichment of core microbes, exemplified by the prevalence of Geobacillus. Through network analysis, it was revealed that these enriched microbes exhibit a capacity to convert protein and lignin into essential building blocks such as amino acids and phenols. Subsequently, these components were polymerized into humus, aligning with the phenol-protein theory. These findings enhance our understanding of the intricate microbial interactions during composting and provide a scientific foundation for developing engineering-ready composting humification regulation technologies.
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Affiliation(s)
- Meihua Zhao
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zhibin Luo
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Yueqiang Wang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Hanpeng Liao
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhen Yu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
| | - Shungui Zhou
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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6
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Liu X, Rong X, Jiang P, Yang J, Li H, Yang Y, Deng X, Xie G, Luo G. Biodiversity and core microbiota of key-stone ecological clusters regulate compost maturity during cow-dung-driven composting. ENVIRONMENTAL RESEARCH 2024; 245:118034. [PMID: 38147920 DOI: 10.1016/j.envres.2023.118034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/11/2023] [Accepted: 12/22/2023] [Indexed: 12/28/2023]
Abstract
The primary objectives of this study were to explore the community-level succession of bacteria, fungi, and protists during cow-dung-driven composting and to elucidate the contribution of the biodiversity and core microbiota of key-stone microbial clusters on compost maturity. Herein, we used high-throughput sequencing, polytrophic ecological networks, and statistical models to visualize our hypothesis. The results showed significant differences in the richness, phylogenetic diversity, and community composition of bacteria, fungi, and eukaryotes at different composting stages. The ASV191 (Sphingobacterium), ASV2243 (Galibacter), ASV206 (Galibacter), and ASV62 (Firmicutes) were the core microbiota of key-stone bacterial clusters relating to compost maturity; And the ASV356 (Chytridiomycota), ASV470 (Basidiomycota), and ASV299 (Ciliophora) were the core microbiota of key-stone eukaryotic clusters relating to compost maturity based on the data of this study. Compared with the fungal taxa, the biodiversity and core microbiota of key-stone bacterial and eukaryotic clusters contributed more to compost maturity and could largely predict the change in the compost maturity. Structural equation modeling revealed that the biodiversity of total microbial communities and the biodiversity and core microbiota of the key-stone microbial clusters in the compost directly and indirectly regulated compost maturity by influencing nutrient availability (e.g., NH4+-N and NO3--N), hemicellulose, humic acid content, and fulvic acid content, respectively. These results contribute to our understanding of the biodiversity and core microbiota of key-stone microbial clusters in compost to improve the performance and efficiency of cow-dung-driven composting.
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Affiliation(s)
- Xin Liu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Xiangmin Rong
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Pan Jiang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Junyan Yang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China; Hunan Wodi Ecological Fertilizer Co. Ltd, Xiangtan, 411213, China
| | - Han Li
- Hunan Wodi Ecological Fertilizer Co. Ltd, Xiangtan, 411213, China
| | - Yong Yang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Xingxiang Deng
- Hunan Wodi Ecological Fertilizer Co. Ltd, Xiangtan, 411213, China
| | - Guixian Xie
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China
| | - Gongwen Luo
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources, Hunan Agricultural University, Changsha, 410128, China.
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Zhao H, Li S, Pu J, Wang H, Dou X. Effects of Bacillus-based inoculum on odor emissions co-regulation, nutrient element transformations and microbial community tropological structures during chicken manure and sawdust composting. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120328. [PMID: 38354615 DOI: 10.1016/j.jenvman.2024.120328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/16/2024] [Accepted: 02/08/2024] [Indexed: 02/16/2024]
Abstract
This study aims to evaluate whether different doses of Bacillus-based inoculum inoculated in chicken manure and sawdust composting will provide distinct effects on the co-regulation of ammonia (NH3) and hydrogen sulfide (H2S), nutrient conversions and microbial topological structures. Results indicate that the Bacillus-based inoculum inhibits NH3 emissions mainly by regulating bacterial communities, while promotes H2S emissions by regulating both bacterial and fungal communities. The inoculum only has a little effect on total organic carbon (TOC) and inhibits total sulfur (TS) and total phosphorus (TP) accumulations. Low dose inoculation inhibits total potassium (TK) accumulation, while high dose inoculation promotes TK accumulation and the opposite is true for total nitrogen (TN). The inoculation slightly affects the bacterial compositions, significantly alters the fungal compositions and increases the microbial cooperation, thus influencing the compost substances transformations. The microbial communities promote ammonium nitrogen (NH4+-N), TN, available phosphorus (AP), total potassium (TK) and TS, but inhibit nitrate nitrogen (NO3--N), TP and TK. Additionally, the bacterial communities promote, while the fungal communities inhibit the nitrite nitrogen (NO2--N) production. The core bacterial and fungal genera regulate NH3 and H2S emissions through the secretions of metabolic enzymes and the promoting or inhibiting effects on NH3 and H2S emissions are always opposite. Hence, Bacillus-based inoculum cannot regulate the NH3 and H2S emissions simultaneously.
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Affiliation(s)
- Huaxuan Zhao
- Jiangsu Institute of Poultry Sciences, Yangzhou, 225125, China
| | - Shangmin Li
- Jiangsu Institute of Poultry Sciences, Yangzhou, 225125, China.
| | - Junhua Pu
- Jiangsu Institute of Poultry Sciences, Yangzhou, 225125, China
| | - Hongzhi Wang
- Jiangsu Institute of Poultry Sciences, Yangzhou, 225125, China
| | - Xinhong Dou
- Jiangsu Institute of Poultry Sciences, Yangzhou, 225125, China
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Pajura R. Composting municipal solid waste and animal manure in response to the current fertilizer crisis - a recent review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169221. [PMID: 38101643 DOI: 10.1016/j.scitotenv.2023.169221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
The dynamic price increases of fertilizers and the generation of organic waste are currently global issues. The growth of the population has led to increased production of solid municipal waste and a higher demand for food. Food production is inherently related to agriculture and, to achieve higher yields, it is necessary to replenish the soil with essential minerals. A synergistic approach that addresses both problems is the implementation of the composting process, which aligns with the principles of a circular economy. Food waste, green waste, paper waste, cardboard waste, and animal manure are promising feedstock materials for the extraction of valuable compounds. This review discusses key factors that influence the composting process and compares them with the input materials' parameters. It also considers methods for optimizing the process, such as the use of biochar and inoculation, which result in the production of the final product in a significantly shorter time and at lower financial costs. The applications of composts produced from various materials are described along with associated risks. In addition, innovative composting technologies are presented.
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Affiliation(s)
- Rebeka Pajura
- Department of Chemistry and Environmental Engineering, Faculty of Civil and Environmental Engineering and Architecture Rzeszow University of Technology, 35-959 Rzeszów, Ave Powstańców Warszawy 6, Poland.
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9
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Dong S, Wei Y, Yu Q, Gao Y, Chen H, Zhou K, Cheng M, Wang B, Wei Y, Hu X. Inoculating functional bacteria improved the humification process by regulating microbial networks and key genera in straw composting by adding different nitrogen sources. BIORESOURCE TECHNOLOGY 2024; 393:130022. [PMID: 37979883 DOI: 10.1016/j.biortech.2023.130022] [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: 09/25/2023] [Revised: 11/04/2023] [Accepted: 11/12/2023] [Indexed: 11/20/2023]
Abstract
The aim of this study was to compare the effect of functional inoculant and different nitrogen sources on the relationship among lignocellulose, precursors, and humus as well as their interactions with bacterial genera in straw composting. Results showed that inoculation improved the heating process and retained more nitrate compared to control. Inoculation increased the degradation of lignocellulosic components by 26.9%-81.6% and the formation of humus by 15.7%-23.0%. Bioinformatics analysis showed that inoculation enriched key genera Chryseolinea in complex nitrogen source (pig manure) compost and Pusillimas, Luteimonas, and Flavobacteria in single nitrogen source (urea) compost, which were related to humus formation. Network analysis found that inoculation and urea addition improved the microbial synergistic effect and inoculation combined with pig manure had more complex modularity and interactions. Combining the functional bacterial inoculant with urea helped to enhance the degradation of lignocellulose and humification process during straw composting especially with single nitrogen source.
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Affiliation(s)
| | - Yiyang Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Qi Yu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yunfei Gao
- Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
| | - Heshu Chen
- Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
| | - Kaiyun Zhou
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, 100193 Beijing, China
| | - Meidi Cheng
- College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China
| | - Bo Wang
- Institute of Animal Nutrition and Feed, Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031, China
| | - Yuquan Wei
- College of Resources and Environmental Science, Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, 100193 Beijing, China
| | - Xiaomei Hu
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
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10
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Zhu L, Zhao Y, Chen S, Miao X, Fang Z, Yao X, Dong C, Hu B. Alternating ventilation accelerates the mineralization and humification of food waste by optimizing the temperature-oxygen-moisture distribution in the static composting reactor. BIORESOURCE TECHNOLOGY 2024; 393:130050. [PMID: 37989420 DOI: 10.1016/j.biortech.2023.130050] [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: 09/03/2023] [Revised: 11/06/2023] [Accepted: 11/15/2023] [Indexed: 11/23/2023]
Abstract
Traditional unidirectional ventilation often leads to the loss of heat and moisture during composting, disrupting the favorable microenvironment required for aerobic microbes. This study developed a pulse alternating ventilation composting reactor and investigated the effects of alternating ventilation on composting efficiency compared with upward ventilation and downward ventilation. The results demonstrated that alternating ventilation stabilized the moisture content at approximately 60 % while reducing the temperature and oxygen concentration range within the reactor. Moreover, it extended the duration of high-temperature (>50 °C) by 31 % and 75 % compared to other two groups. It improved the microbial cooperation intensity and stimulated the core microbe (Tepidimicrobium). Seed germination index (GI) of the compost was improved (GI = 91.27 %), and the humic acid content was 1.23 times and 1.37 times higher than other two groups. These results showed that alternating ventilation can be used for efficient resource disposal of food waste.
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Affiliation(s)
- Lin Zhu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuxiang Zhao
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Siyin Chen
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xinyin Miao
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhou Fang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiangwu Yao
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chifei Dong
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Baolan Hu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, China; College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou, China.
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11
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Wang Q, Zhao M, Wang Y, Xie Z, Zhao S, You S, Chen Q, Zhang W, Qin Y, Zhang G. Microbial Inoculation during the Short-Term Composting Process Enhances the Nutritional and Functional Properties of Oyster Mushrooms ( Pleurotus ostreatus). Life (Basel) 2024; 14:201. [PMID: 38398710 PMCID: PMC10890702 DOI: 10.3390/life14020201] [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: 12/23/2023] [Revised: 01/21/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
In recent years, short-term composting techniques have been widely applied in oyster mushroom cultivation, but there is still a lack of systematic research on their impact on the nutritional and functional properties of fruiting bodies. In this study, the microbial inoculant Streptomyces thermoviolaceus BUA-FM01 (ST) was applied in the short-term composting process for oyster mushroom cultivation. The agronomic traits, nutritional composition, flavor compounds, and antioxidant activity of fruiting bodies from the first three flushes were evaluated. The results show that microbial inoculation significantly (p < 0.05) reduced the total carbon content and C/N ratio of the composted substrates and, furthermore, increased the total yield of the fruiting bodies. Moreover, microbial inoculation significantly (p < 0.05) increased the crude protein, crude polysaccharide, total amino acid, and essential amino acid contents of the fruiting bodies. The fruiting bodies of the first flush of ST treatment possessed the highest umami amino acid content and equivalent umami concentration value. Furthermore, microbial inoculation significantly (p < 0.05) enhanced the scavenging ability of crude polysaccharides toward free radicals. The results indicate that microbial inoculation has many benefits for the composting cultivating process of oyster mushrooms and good application prospects.
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Affiliation(s)
- Qiuying Wang
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China; (Q.W.); (Y.W.)
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Minrui Zhao
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Yiyang Wang
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China; (Q.W.); (Y.W.)
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Zhenfei Xie
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Shunyin Zhao
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Shuning You
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Qingjun Chen
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Weiwei Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
| | - Yong Qin
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China; (Q.W.); (Y.W.)
| | - Guoqing Zhang
- Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China; (M.Z.); (Z.X.); (S.Z.); (S.Y.); (Q.C.); (W.Z.)
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12
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Wei L, Wang J, Liu X, Lai Q, Li G, Fu X, Li G, Shao Z, Dong C. Galbibacter pacificus sp. nov., isolated from surface seawater of the western Pacific Ocean and transfer of Joostella marina to the genus Galbibacter as Galbibacter orientalis nom. nov. and emended description of the genus Galbibacter. Int J Syst Evol Microbiol 2023; 73. [PMID: 37801073 DOI: 10.1099/ijsem.0.006078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023] Open
Abstract
Two Gram-stain-negative, non-motile, non-spore-forming, strictly aerobic and rod-shaped bacterial strains, CMA-7T and CAA-3, were isolated from surface seawater samples collected from the western Pacific Ocean. Phylogeny of 16S rRNA gene sequences indicated they were related to the genera Galbibacter and Joostella and shared 95.1, 90.9 and 90.8% sequence similarity with G. mesophilus Mok-17T, J. marina DSM 19592T and G. marinus ck-I2-15T, respectively. Phylogenomic analysis showed that the two strains, together with the members of the genera Galbibacter and Joostella, formed a monophyletic clade that could also be considered a monophyletic taxon. This distinctiveness was supported by amino acid identity and percentage of conserved proteins indices, phenotypic and chemotaxonomic characteristics and comparative genomics analysis. Digital DNA‒DNA hybridization values and average nucleotide identities between the two strains and their closest relatives were 18.0-20.8 % and 77.7-79.3 %, respectively. The principal fatty acids were iso-C15 : 0, iso-C17 : 0 3-OH, iso-C15 : 1 G, Summed Feature 3 (C16 : 1 ω7c/C16 : 1 ω6c or C16 : 1 ω6c/C16 : 1 ω7c), Summed Feature 9 (iso-C17 : 1 ω9c or C16 : 0 10-methyl), and C15 : 0 3-OH. The predominant respiratory quinone was MK-6. The polar lipids were phosphatidylethanolamine, aminolipid, aminophospholipid, phospholipid, phosphoglycolipid, glycolipid and unknown polar lipid. The genomic DNA G+C content of strains CMA-7T and CAA-3 was both 38.4 mol%. Genomic analysis indicated they have the potential to degrade cellulose and chitin. Based on the polyphasic evidence presented in this study, the two strains represent a novel species within the genus Galbibacter, for which the name Galbibacter pacificus sp. nov. is proposed. The type strain is CMA-7T (=MCCC M28999T = KCTC 92588T). Moreover, the transfer of Joostella marina to the genus Galbibacter as Galbibacter orientalis nom. nov. (type strain En5T = KCTC 12518T = DSM 19592T=CGMCC 1.6973T) is also proposed.
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Affiliation(s)
- Lin Wei
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Jianning Wang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Xiupian Liu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Qiliang Lai
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Guizhen Li
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Xiaoteng Fu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Guangyu Li
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Zongze Shao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
| | - Chunming Dong
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources of China; State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China
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Wang H, Lin S, Zhang H, Guo D, Dan L, Zheng X. Batch-fed composting of food waste: Microbial diversity characterization and removal of antibiotic resistance genes. BIORESOURCE TECHNOLOGY 2023:129433. [PMID: 37399965 DOI: 10.1016/j.biortech.2023.129433] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 07/05/2023]
Abstract
The aim of this work was to study the impact of batch-fed strategies on bacterial communities and ARGs in compost. The findings demonstrate that batch-feeding helped maintain high temperatures in the compost pile for an extended period (above 50 °C for 18 days), which in turn facilitated water dissipation. High-throughput sequencing showed that Firmicutes played a significant role in batch-fed composting (BFC). They had a high relative abundance at the beginning (98.64%) and end (45.71%) of compost. Additionally, BFC showed promising results in removing ARGs, with reductions of 3.04-1.09 log copies/g for Aminoglycoside and 2.26-2.44 log copies/g for β_Lactamase. This study provides a comprehensive survey of BFC and demonstrates its potential for eliminating resistance contamination in compost.
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Affiliation(s)
- Haichao Wang
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing 100089, China
| | - Shuye Lin
- Cancer Research Center, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Huan Zhang
- Cancer Research Center, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Dong Guo
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing 100089, China
| | - Liu Dan
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing 100089, China
| | - Xiaowei Zheng
- Institute of Resources and Environment, Beijing Academy of Science and Technology, Beijing 100089, China.
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Duan Y, Awasthi MK, Yang J, Tian Y, Li H, Cao S, Syed A, Verma M, Ravindran B. Bacterial community dynamics and co-occurrence network patterns during different stages of biochar-driven composting. BIORESOURCE TECHNOLOGY 2023:129358. [PMID: 37336449 DOI: 10.1016/j.biortech.2023.129358] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/12/2023] [Accepted: 06/16/2023] [Indexed: 06/21/2023]
Abstract
Bacterial communities were dynamically tracked at four stages of biochar-driven sheep manure pile composting, and the co-occurrence networks with keystone taxa were established. The succession of bacterial community obvious varied during the composting process, Proteobacteria predominant in initial stage (39%) then shifted into Firmicutes in thermophilic (41%) and mesophilic (27%) stages, finally the maturation stage dominant by Bacteroidota (26%). Visualizations of bacterial co-occurrence networks demonstrate more cooperative mutualism and complex interactions in the thermophilic and mesophilic phases. Noticeably, the 7.5 and 10% biochar amended composts shown highest connections (736 and 663 total links) and positive cooperation (97.37 and 97.13% positive link) as well as higher closeness centrality and betweenness centrality of keystone taxa. Overall, appropriate biochar addition alters bacterial community succession and strengthens connection between keystone taxa and other bacteria, with 7.5 and 10% biochar amended composts has intense mutualistic symbiosis among bacterial communities.
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Affiliation(s)
- Yumin Duan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Jianfeng Yang
- College of Resources Environment Science and Technology, Hubei University of Science and Technology, Xianning 437100, Hubei, China
| | - Yuan Tian
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Huike Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
| | - Shan Cao
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia
| | - Meenakshi Verma
- University Centre for Research & Development Department of Chemistry Chandigarh University Gharuan, Mohali, India
| | - Balasubramani Ravindran
- Department of Environmental Energy and Engineering, Kyonggi University, Yeongtong-Gu, Suwon, Gyeonggi-Do 16227, South Korea
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15
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Liu X, Zubair M, Kong L, Shi Y, Zhou H, Tong L, Zhu R, Lv Y, Li Z. Shifts in bacterial diversity characteristics during the primary and secondary fermentation stages of bio-compost inoculated with effective microorganisms agent. BIORESOURCE TECHNOLOGY 2023; 382:129163. [PMID: 37224888 DOI: 10.1016/j.biortech.2023.129163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/26/2023]
Abstract
Microbial inoculation was an effective way to improve product quality of composting and solve traditional composting shortage. However, the effect mechanism of microbial inoculation on compost microorganisms remains unclear. Here, Shifts in bacterial community, metabolic function and co-occurrence network during the primary and secondary fermentation stages of bio-compost inoculated with effective microorganisms (EM) agent were analyzed by high-throughput sequencing and network analysis. Microbial inoculation promoted organic carbon transformation in early stage of secondary fermentation (days 27 to 31). The beneficial biocontrol bacteria were main dominant genera at the second fermentation stage. Microbial inoculation can be good for the survival of beneficial bacteria. Inoculation with microbes promoted amino acid, carbohydrate and lipid metabolism, and inhibited energy metabolism and citrate cycle (TCA cycle). Microbial inoculation could enhance complexity of bacterial network and enhance mutual cooperation among bacteria during composting.
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Affiliation(s)
- Xiayan Liu
- Department of Soil and Water Sciences, College of Land Science and Technology, China Agricultural University, Beijing 100193, China; Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Muhammad Zubair
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Lingyu Kong
- Department of Soil and Water Sciences, College of Land Science and Technology, China Agricultural University, Beijing 100193, China
| | - Yu Shi
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, Henan, China
| | - Hu Zhou
- Department of Soil and Water Sciences, College of Land Science and Technology, China Agricultural University, Beijing 100193, China
| | - Lihong Tong
- XState Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, 100084 Beijing, China
| | - Rongsheng Zhu
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Yizhong Lv
- Department of Soil and Water Sciences, College of Land Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Zhaojun Li
- Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China.
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Zhu L, Zhao Y, Yao X, Zhou M, Li W, Liu Z, Hu B. Inoculation enhances directional humification by increasing microbial interaction intensity in food waste composting. CHEMOSPHERE 2023; 322:138191. [PMID: 36812995 DOI: 10.1016/j.chemosphere.2023.138191] [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: 11/18/2022] [Revised: 02/04/2023] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
Inoculation can effectively improve the recycling level of organic waste in composting process. However, the role of inocula in the humification process has been rarely studied. Therefore, we constructed a simulated food waste composting system by adding commercial microbial agents to explore the function of inocula. The results showed that adding microbial agents extended the high temperature maintenance time by 33% and increased the humic acid content by 42%. Inoculation significantly improved the degree of directional humification (HA/TOC = 0.46, p < 0.001). The proportion of positive cohesion in the microbial community underwent an overall increase. The strength of bacterial/fungal community interaction increased by 1.27-fold after inoculation. Furthermore, the inoculum stimulated the potential functional microbes (Thermobifida and Acremonium) which were highly related to the formation of humic acid and the degradation of organic matter. This study showed that additional microbial agents could strengthen microbial interaction to raise the humic acid content, thus opening the door for the development of targeted biotransformation inocula in the future.
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Affiliation(s)
- Lin Zhu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yuxiang Zhao
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xiangwu Yao
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Meng Zhou
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wenji Li
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zishu Liu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Baolan Hu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang, 310058, China; Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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Yin Y, Li M, Tao X, Yang C, Zhang W, Li H, Zheng Y, Wang X, Chen R. Biochar enhanced organic matter transformation during pig manure composting: Roles of the cellulase activity and fungal community. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 333:117464. [PMID: 36764176 DOI: 10.1016/j.jenvman.2023.117464] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/12/2023] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Fungal degradation of cellulose is a key step in the conversion of organic matter in composting. This study investigated the effects of adding 10% biochar (including, prepared from corn stalk and rape stalk corresponding to CSB and RSB) on organic matter transformation in composting and determined the role of cellulase and fungal communities in the conversion of organic matter. The results showed that biochar could enhance the conversion of organic matter, especially in RSB treatment. Biochar could increase cellulase activity, and RSB could enhance 33.78% and 30.70% the average activity of cellulase compared with the control and CSB treatments in the mesophilic to thermophilic phase, respectively. The results of high throughput sequencing demonstrated that Basidiomycota dominant in mesophilic phase, and Ascomycota dominant in other phases of composting. The redundancy analysis showed that Alternaria, Thermomycees, Aspergillus, Wallemia, and Melanocarpus might be the key fungi for the degradation of organic matter, and Fusarium, Penicillium, and Scopulariopsis may promote the conversion of organic matter. Network showed that the addition of RSB changed the interactions between fungal communities and organic matter transformation, and RSB treatment enriched members of Ascomycota related to organic matter transformation and cellulase activity. These results indicated that RSB improved organic matter conversion by enhancing the role of cellulase and fungal communities.
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Affiliation(s)
- Yanan Yin
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China.
| | - Mengtong Li
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
| | - Xiaohui Tao
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
| | - Chao Yang
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
| | - Wenrong Zhang
- School of Building Services Science and Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
| | - Haichao Li
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Lennart Hjelms Väg 9, 750 07, Uppsala, Sweden
| | - Yucong Zheng
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
| | - Xiaochang Wang
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
| | - Rong Chen
- Shaanxi Key Laboratory of Environmental Engineering, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, 710055, PR China
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Pottipati S, Jat N, Kalamdhad AS. Bioconversion of Eichhornia crassipes into vermicompost on a large scale through improving operational aspects of in-vessel biodegradation process: Microbial dynamics. BIORESOURCE TECHNOLOGY 2023; 374:128767. [PMID: 36822559 DOI: 10.1016/j.biortech.2023.128767] [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: 01/31/2023] [Revised: 02/12/2023] [Accepted: 02/18/2023] [Indexed: 06/18/2023]
Abstract
Eichhornia crassipes is a common, abundant aquatic weed biomass found globally. The present study examined optimum biodegradation procedures through batch studies (550 L rotating drum composter) and the resulting best combination on a large scale (5000 L rotary drum composter). The pilot scale rotary drum reactor was commenced with cow manure and then treated for 3 months with 250 kg/day of homogenously mixed E. crassipes and dry leaves. The rotary drum's inlet and outlet temperatures were 60 °C and 39 °C, respectively, suggesting thermophilic conditions with a 7-day waste retention duration. Eisenia fetida was used for vermicomposting the outlet material for 20 days, raising the nitrogen content to 3.2%. Bacterial diversity (16S-rRNA) sequencing revealed that Proteobacteria and Euryarchaeota are the most predominant. After 27 days, the volume dropped by 71%, and the product was stable and soil-safe. Large-scale optimised biodegradation may be a better way to handle aquatic weed biomass.
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Affiliation(s)
- Suryateja Pottipati
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Neeraj Jat
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Ajay S Kalamdhad
- Department of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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He X, Cong R, Gao W, Duan X, Gao Y, Li H, Li Z, Diao H, Luo J. Optimization of composting methods for efficient use of cassava waste, using microbial degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:51288-51302. [PMID: 36809615 DOI: 10.1007/s11356-023-25818-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/05/2023] [Indexed: 04/16/2023]
Abstract
With the recent revolution in the green economy, agricultural solid waste resource utilization has become an important project. A small-scale laboratory orthogonal experiment was set up to investigate the effects of C/N ratio, initial moisture content and fill ratio (vcassava residue: vgravel) on the maturity of cassava residue compost by adding Bacillus subtilis and Azotobacter chroococcum. The highest temperature in the thermophilic phase of the low C/N ratio treatment is significantly lower than the medium and high C/N ratios. The C/N ratio and moisture content have a significant impact on the results of cassava residue composting, while the filling ratio only has a significant impact on the pH value and phosphorus content. Based on comprehensive analysis, the recommended process parameters for pure cassava residue composting are a C/N ratio of 25, an initial moisture content of 60%, and a filling ratio of 5. Under these conditions, the high-temperature conditions can be reached and maintained quickly, the organic matter has been degraded by 36.1%, the pH value has dropped to 7.36, the E4/E6 ratio is 1.61, the conductivity value has dropped to 2.52 mS/cm, and the final germination index increased to 88%. The thermogravimetry, scanning electron microscope, and energy spectrum analysis also showed that the cassava residue was effectively biodegraded. Cassava residue composting with this process parameter has great reference significance for the actual production and application of agriculture.
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Affiliation(s)
- Xiangning He
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Riyao Cong
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Wei Gao
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
- Guangxi Engineering and Technology Research Center for High Quality Structural Panels From Biomass Wastes, Nanning, 530004, China.
| | - Xueying Duan
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Yi Gao
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Hong Li
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zepu Li
- Agriculture College, Guangxi University, Nanning, 530004, Guangxi, China
- Northwest A&F Univ, Coll Forestry, Yangling, 712100, Shaanxi, China
| | - Hailin Diao
- Forestry College, Guangxi University, Nanning, 530004, Guangxi, China
| | - Jianju Luo
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
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Zhong L, Wu T, Ding J, Xu W, Yuan F, Liu BF, Zhao L, Li Y, Ren NQ, Yang SS. Co-composting of faecal sludge and carbon-rich wastes in the earthworm's synergistic cooperation system: Performance, global warming potential and key microbiome. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159311. [PMID: 36216047 DOI: 10.1016/j.scitotenv.2022.159311] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 09/21/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Composting is an effective alternative for recycling faecal sludge into organic fertilisers. A microflora-earthworm (Eisenia fetida) synergistic cooperation system was constructed to enhance the composting efficiency of faecal sludge. The impact of earthworms and carbon-rich wastes (rice straw (RS) and sawdust (S)) on compost properties, greenhouse gas emissions, and key microbial species of composting were evaluated. The addition of RS or S promoted earthworm growth and reproduction. The earthworm-based system reduced the volatile solid of the final substrate by 13.19-16.24 % and faecal Escherichia coli concentrations by 1.89-3.66 log10 cfu/g dry mass compared with the earthworm-free system. The earthworm-based system increased electrical conductivity by 0.322-1.402 mS/cm and reduced C/N by 56.16-64.73 %. The NH4+:NO3- ratio of the final faecal sludge and carbon-rich waste was <0.16. The seed germination index was higher than 80 %. These results indicate that earthworms contribute to faecal sludge maturation. Earthworm addition reduced CO2 production. The simultaneous addition of earthworms and RS system (FRS2) resulted in the lowest global warming potential (GWP). The microbial diversity increased significantly over time in the RS-only system, whereas it initially increased and later decreased in the FRS2 system. Cluster analysis revealed that earthworms had a more significant impact on the microbial community than the addition of carbon-rich waste. Co-occurrence networks for earthworm-based systems were simple than those for earthworm-free systems, but the major bacterial genera were more complicated. Highly abundant key species (norank_f_Chitinophagaceae and norank_f_Gemmatimonadaceae) are closely related. Microbes may be more cooperative than competitive, facilitating the conversion of carbon and nitrogen in earthworm-based systems. This work has demonstrated that using earthworms is an effective approach for promoting the efficiency of faecal sludge composting and reducing GWP.
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Affiliation(s)
- Le Zhong
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Tong Wu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jie Ding
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Wei Xu
- General Water of China Co., Ltd., Beijing 100022, China
| | - Fang Yuan
- General Water of China Co., Ltd., Beijing 100022, China
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yan Li
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shan-Shan Yang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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21
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Chen L, Li W, Zhao Y, Zhang S, Meng L. Mechanism of sulfur-oxidizing inoculants and nitrate on regulating sulfur functional genes and bacterial community at the thermophilic compost stage. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116733. [PMID: 36372033 DOI: 10.1016/j.jenvman.2022.116733] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/05/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
The emission of H2S odors predominantly occurred at the thermophilic phase of composting, which could cause odorous gas pollution and reduce the fertilizer value of composting products. And sulfur-oxidizing bacteria (SOB) possess oxidative capacities for inorganic sulfur compounds with nitrate applied as electron acceptors. Therefore, this study aimed to assess the effectiveness of combined additives (SOB inoculants and nitrate) on the bacterial community diversity, sulfur-oxidizing gene abundances, and metabolic function prediction at the thermophilic stage of sewage sludge composting. The highest sulfate contents were increased by 1.02-1.34 folds, and the abundances of the sulfur-oxidizing genes (sqr, pdo, sox, and sor) were also enhanced by adding the combined additives. Network patterns revealed a strengthened interaction of inoculants and sulfur functional genes. Microbial functional pathways predicted higher metabolic levels of carbohydrate and amino acid metabolisms with the addition of combined additives, and the predicted relative abundances of sulfur metabolism and nitrogen metabolism were increased by 19.3 ± 2.5% and 24.7 ± 4.1%, respectively. Heatmap analysis showed that the SOB might have a competitive advantage over the indigenous denitrifying bacteria in using nitrate for biochemical reactions. Correlation analyses suggested that sulfur-oxidizing efficacy could be indirectly affected by the environmental parameters through changing the structure of bacterial community. These findings provide new insights toward an optimized inoculation strategy of using SOB and nitrate to enhance sulfur preservation and modulate the bacterial communities at the thermophilic phase of sewage sludge composting.
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Affiliation(s)
- Li Chen
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Weiguang Li
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Yi Zhao
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Shumei Zhang
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin, 150010, China
| | - Liqiang Meng
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin, 150010, China
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22
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Liu Y, Zhang K, Zhang H, Zhou K, Chang Y, Zhan Y, Pan C, Shi X, Zuo H, Li J, Wei Y. Humic acid and phosphorus fractions transformation regulated by carbon-based materials in composting steered its potential for phosphorus mobilization in soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116553. [PMID: 36283197 DOI: 10.1016/j.jenvman.2022.116553] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 10/10/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
This study investigated the effects of different carbon-based additives including biochar, woody peat, and glucose on humic acid, fulvic acid, and phosphorus fractions in chicken manure composting and its potential for phosphorus mobilization in soil. The results showed that the addition of glucose effectively increased the total humic substance content (90.2 mg/g) of composts, and the fulvic acid content was significantly higher than other groups (P < 0.05). The addition of biochar could effectively improve the content of available phosphorus by 59.9% in composting. The addition of carbon-based materials to the composting was beneficial for the production of more stable inorganic phosphorus in the phosphorus fraction. The highest proportion of soluble inorganic phosphorus components of sodium hydroxide was found in group with woody peat addition (8.7%) and the highest proportion of soluble inorganic phosphorus components of hydrochloric acid was found in group with glucose addition (35.2%). The compost products with the addition of biochar (humic acid decreased by 17.9%) and woody peat (fulvic acid decreased by 72.6%) significantly increased soil humic acid mineralization. The compost products with the addition of biochar was suitable as active phosphate fertilizer, while the compost products with the addition of glucose was suitable as slow-release phosphate fertilizer.
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Affiliation(s)
- Yongdi Liu
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Kui Zhang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Hao Zhang
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China
| | - Kaiyun Zhou
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Yuan Chang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Yabin Zhan
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Chengjie Pan
- Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Xiong Shi
- Yangtze Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing, 100038, China; National Engineering Research Center of Eco-Environment Protection for Yangtze River Economic Belt, China Three Gorges Corporation, Suzhou, 215163, China
| | - Huiduan Zuo
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Ji Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China
| | - Yuquan Wei
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou, 215100, China.
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23
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Li Y, Zhou M, Li C, Pan X, Lv N, Ye Z, Zhu G, Zhao Q, Cai G. Inoculating indoleacetic acid bacteria promotes the enrichment of halotolerant bacteria during secondary fermentation of composting. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 322:116021. [PMID: 36067675 DOI: 10.1016/j.jenvman.2022.116021] [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: 06/28/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
The secondary fermentation stage is critical for stabilizing composting products and producing various secondary metabolites. However, the low metabolic rate of mesophilic bacteria is regarded as the rate-limiting stage in composting process. In present study, two indoleacetic acid (IAA)-producing bacteria (Bacillus safensis 33C and Corynebacterium stationis subsp. safensis 29B) were inoculated to strengthen the secondary fermentation stage to improve the plant-growth promoting potential of composting products. The results showed that the addition of IAA-producing bacteria promoted the assimilation of soluble salt, the condensation and aromatization of humus, and the accumulation of dissolved organic nitrogen (DON) and dissolved organic carbon (DOC). The bioaugmentation strategy also enabled faster microbial community succession during the medium-late phase of secondary fermentation. However, the colonization of Bacillus and Corynebacterium could not explain the disproportionate increase of IAA yield, which reached up to 5.6 times compared to the control group. Deeper analysis combined with physicochemical properties and microbial community structure suggested that IAA-producing bacteria might induce the increase of salinity, which enriched halotolerant bacteria capable of producing IAA, such as Halomonas, Brachybacterium and Flavobacterium. In addition, the results also proved that it was necessary to shorten secondary fermentation time to avoid IAA degradation without affecting composting maturity. In summary, enhancing secondary fermentation of composting via adding proper IAA-producing bacteria is an efficient strategy for upgrading the quality of organic fertilizer.
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Affiliation(s)
- Yanlin Li
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mingdian Zhou
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunxing Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xiaofang Pan
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Nan Lv
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Zhilong Ye
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Gefu Zhu
- School of Environment and Nature Resources, Renmin University of China, Beijing, 100872, China; Key Laboratory of Energy Resource Utilization from Agriculture Residue, Ministry of Agriculture and Rural Affairs, China.
| | - Quanbao Zhao
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| | - Guanjing Cai
- Biology Department and Institute of Marine Sciences, College of Science, And Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China.
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24
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Zhang W, Zhao Y, Lu Q, Feng W, Wang L, Wei Z. Evaluating differences in humic substances formation based on the shikimic acid pathway during different materials composting. BIORESOURCE TECHNOLOGY 2022; 364:128060. [PMID: 36195217 DOI: 10.1016/j.biortech.2022.128060] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to evaluate differences in humic substance (HS) formation based on the shikimic acid pathway (SAP) during five different materials composting. The results showed that compared with other three materials, gallic acid, protocatechuic acid and shikimic acid of the SAP products in lawn waste (LW) and garden waste (GW) compost decreased significantly. Furthermore, as important indicators for evaluating humification, humic acid and degree of polymerization increased by 39.4%, 79.5% and 21.8%, 87.9% in LW and GW, respectively. Correlation analysis showed that SAP products were strongly correlated with HS fractions in LW and GW. Meanwhile, network analysis indicated that more core bacteria associated with both SAP products and HS were identified in LW and GW. Finally, the structural equation model proved that SAP had more significant contribution to humification improvement in LW and GW. These findings provided theoretical foundation and feasible actions to improve compost quality by the SAP.
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Affiliation(s)
- Wenshuai Zhang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yue Zhao
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Qian Lu
- College of Life Sciences and Technology, Harbin Normal University, Harbin 150025, China
| | - Wenxuan Feng
- College of Life Sciences and Technology, Harbin Normal University, Harbin 150025, China
| | - Liqin Wang
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Zimin Wei
- College of Life Science, Northeast Agricultural University, Harbin 150030, China.
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25
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Wang M, Wu Y, Zhao J, Liu Y, Gao L, Jiang Z, Zhang J, Tian W. Comparison of composting factors, heavy metal immobilization, and microbial activity after biochar or lime application in straw-manure composting. BIORESOURCE TECHNOLOGY 2022; 363:127872. [PMID: 36084764 DOI: 10.1016/j.biortech.2022.127872] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Composting is an efficient way of disposing agricultural solid wastes as well as passivating heavy metals (HMs). Herein, equivalent (3%) biochar (BC) or lime (LM) were applied in rice straw and swine manure composting, with no additives applied as control group (CK). The results indicated that both the additives increased NO3--N content, organic matter degradation, humus formation, and HM immobilization in composting, and the overall improvement of lime was more significant. In addition, the additives optimized the bacterial community of compost, especially for thermophilic and mature phase. Lime stimulated the growth of Bacillus, Peptostreptococcus, Clostridium, Turicibacter, Clostridiaceae and Pseudomonas, which functioned well in HM passivation via biosorption, bioleaching, or promoting HM-humus formation by secreting hydrolases. Lime (3%) as additive is recommended in swine manure composting to promote composting maturity and reduce HM risk. The study present theoretical guidance in improving composting products quality for civil and industrial composting.
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Affiliation(s)
- Mengmeng Wang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Yuncheng Wu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Jiayin Zhao
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Yu Liu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Li Gao
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Zhongkun Jiang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China
| | - Jibing Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Wei Tian
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
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26
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Qian X, Bi X, Xu Y, Yang Z, Wei T, Xi M, Li J, Chen L, Li H, Sun S. Variation in community structure and network characteristics of spent mushroom substrate (SMS) compost microbiota driven by time and environmental conditions. BIORESOURCE TECHNOLOGY 2022; 364:127915. [PMID: 36089128 DOI: 10.1016/j.biortech.2022.127915] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/30/2022] [Accepted: 09/04/2022] [Indexed: 06/15/2023]
Abstract
Global mushroom production is growing rapidly, raising concerns about polluting effects of spent mushroom substrate (SMS) and interest in uses in composts. In this study, SMS composting trials and high-throughput sequencing were carried out to investigate to better understand how the structure, co-occurrence patterns, and functioning of bacterial and fungal communities vary through compost time and across environmental conditions. The results suggested that both bacterial and fungal microbiota displayed significant variation in community composition across different composting stages. Enzyme activity levels showed both directional and fluctuating changes during composting, and the activity dynamics of carboxymethyl cellulase, polyphenol oxidase, laccase, and catalase correlated significantly with the succession of microbial community composition. The co-occurrence networks are "small-world" and modularized and the topological properties of each subnetwork were significantly influenced by the environmental factors. Finally, seed germination and seedling experiments were performed to verify the biosafety and effectiveness of the final composting products.
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Affiliation(s)
- Xin Qian
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaohui Bi
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yanfei Xu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ziwei Yang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Taotao Wei
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Meijuan Xi
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jiahuan Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Liding Chen
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Hanzhou Li
- Wuhan Benagen Technology Company, Wuhan 430000, China
| | - Shujing Sun
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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27
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Xu M, Yang M, Sun H, Meng J, Li Y, Gao M, Wang Q, Wu C. Role of multistage inoculation on the co-composting of food waste and biogas residue. BIORESOURCE TECHNOLOGY 2022; 361:127681. [PMID: 35878772 DOI: 10.1016/j.biortech.2022.127681] [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: 06/17/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Effect of diverse Lactobacillus amylophilus, Geobacillus thermoleovorans, and Bacillus subtilis inoculation patterns on the co-composting performance of food waste and biogas residue was explored. Experimental results revealed that, compared to the single-stage inoculation and non-inoculation groups, the multistage inoculation pattern prolonged the thermophilic period during composting, consequently improving organic matter decomposition and humification [with a high germination index (120.9%)]. In addition, it could promote the development of humic substances [with a high humus index (4.3) and biological index (1.4)] and lower emissions of carbon dioxide (CO2), methane (CH4), and ammonia (NH3). Additionally, it could improve the microbial variety and the amounts of functional bacteria (i.e., Chloroflexi) in compost, which might be advantageous for the decomposition of refractory organic materials and plant growth. Therefore, the multistage inoculation pattern is recommended for organic waste composting in terms of its gas emissions, compost quality and efficacy benefits.
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Affiliation(s)
- Mingyue Xu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Min Yang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Haishu Sun
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jie Meng
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yongsheng Li
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ming Gao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
| | - Qunhui Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China
| | - Chuanfu Wu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China.
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28
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Chen L, Li W, Zhao Y, Zhang S, Meng L. Evaluation of bacterial agent/nitrate coupling on enhancing sulfur conversion and bacterial community succession during aerobic composting. BIORESOURCE TECHNOLOGY 2022; 362:127848. [PMID: 36031129 DOI: 10.1016/j.biortech.2022.127848] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/20/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
This study evaluated the coupling effects of sodium nitrate (SN) and sulfur-oxidizing bacterial agent (BA) on oxidizing reduced-state sulfur and altering the bacteria community in SN, BA, and SN + BA treatments, respectively. Results revealed that bacterial inoculation prolonged the thermophilic period, facilitated organics degradation and compost humification. Compared to the control group, SN + BA treatment reduced the cumulative H2S emissions and sulfur loss rate by 55.1 % and 15.7 %, respectively, and the nitrate reduction (used as electron donors) efficiency was enhanced by 7.8 % during the first week of composting. Bacterial inoculation altered the diversities and structure of the bacterial community by increasing the relative abundances of thermotolerant bacteria. Correlation analyses showed that the dominant phyla involved in nitrate-based sulfur-oxidizing reactions could be Firmicutes and Synergistota. These findings suggested the application viability of SN and BA to regulate the sulfur biotransformation and bacterial community in composting.
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Affiliation(s)
- Li Chen
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Weiguang Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Yi Zhao
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shumei Zhang
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China
| | - Liqiang Meng
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin 150010, China
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29
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He Y, Zhang Y, Huang X, Xu J, Zhang H, Dai X, Xie L. Deciphering the internal driving mechanism of microbial community for carbon conversion and nitrogen fixation during food waste composting with multifunctional microbial inoculation. BIORESOURCE TECHNOLOGY 2022; 360:127623. [PMID: 35850391 DOI: 10.1016/j.biortech.2022.127623] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
In this study, the effects of multifunctional microbial inoculation on food waste composting based on the synergistic property between organic matter degradation and nitrogen fixation were investigated. The results showed that inoculation simultaneously strengthened organic matter degradation by 9.9% and improved the nitrogen content by 20.6% compared with that of the control group. Additionally, spectral analysis demonstrated that inoculation was conducive to the enhanced humification, which was supported by the improvement in polyphenol oxidase activity. Microbial analysis showed that most of the introduced microorganisms (Bacillus, Streptomyces, Saccharomonospora) successfully colonized, and stimulated the growth of other indigenous microorganisms (Enterobacter, Paenibacillus). Meanwhile, the change in microbial community structure was accompanied by the enhanced tricarboxylic acid cycle and amino acid metabolism. Furthermore, network analysis and structural equation model revealed that the enhanced cooperation of microorganisms, in which more carbon sources could be provided by cellulose decomposition for nitrogen fixation.
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Affiliation(s)
- Yingying He
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Yidie Zhang
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Xia Huang
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Jun Xu
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Hongning Zhang
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Xiaohu Dai
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Li Xie
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, PR China.
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30
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Pakaweerachat P, Chysirichote T. Valorization of tannin rich triphala waste for simultaneous tannase and gallic acid production under solid state fermentation by Aspergillus niger. CHEM ENG COMMUN 2022. [DOI: 10.1080/00986445.2022.2107509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Pattarabhorn Pakaweerachat
- Department of Food Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
- Faculty of Home Economics Technology, Department of Food and Nutrition, Rajamangala University of Technology Krungthep, Bangkok, Thailand
| | - Teerin Chysirichote
- Department of Food Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
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Zhao X, Xu K, Wang J, Wang Z, Pan R, Wang Q, Li S, Kumar S, Zhang Z, Li R. Potential of biochar integrated manganese sulfate for promoting pig manure compost humification and its biological mechanism. BIORESOURCE TECHNOLOGY 2022; 357:127350. [PMID: 35609751 DOI: 10.1016/j.biortech.2022.127350] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/15/2022] [Accepted: 05/18/2022] [Indexed: 05/16/2023]
Abstract
This study aimed to clarify the effect of the integrated addition of different proportions of biochar (0 and 5%) and MnSO4 (0, 0.25%, and 0.50%) to pig manure compost. The results indicated the integrated use of biochar (BC) and Mn2+ advanced the compost humification. In particular, the integrated use of 0.50% Mn2+ and 5% BC showed higher total organic carbon degradation (20.67%) and humic acid production (81.26 g kg-1) than other treatments. Microbial community analysis showed the integrated use of BC and Mn2+ regulated the diversity and community structure of organic matter-mineralizing microbes by maintaining the relative abundance of bacteria Firmicutes (54.62%) and Proteobacteria (38.05%) at high levels during the thermophilic period and boosting those of the fungi of Ascomycota (58.91%) and Actinobacteria (15.60%) during the maturity period of composting. This study illustrated the potential and biological mechanisms of integrating BC and Mn2+ as additives in compost humification.
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Affiliation(s)
- Xinyu Zhao
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Kaili Xu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Jingwen Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Ziqi Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Ruokun Pan
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Quan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Songling Li
- Qinghai Academy of Agricultural and Forestry Sciences, Qinghai University, Qinghai 810016, PR China
| | - Sunil Kumar
- Solid & Hazardous Waste Management Division, National Environmental Engineering Research Institute (Council of Scientific & Industrial Research-India) Nehru Marg, Nagpur 440020, India
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Ronghua Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
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