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Zhang H, Zhang J, Zhang H, Jiang W, Zhang Y, Huang J, He X, Wang W, He C. Coupling effects of aureomycin and zinc ion on nitrification process and nitrification enzymes during the biological nitrogen removal. CHEMOSPHERE 2024; 362:142659. [PMID: 38906185 DOI: 10.1016/j.chemosphere.2024.142659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/04/2024] [Accepted: 06/17/2024] [Indexed: 06/23/2024]
Abstract
Aureomycin and Zinc ion (Zn2+) are common antibiotics and heavy metals that exist in livestock wastewater. The coupling effects of Aureomycin and Zn2+ on the nitrification process and nitrification function enzymes are crucial for controlling nitrogen removal in livestock wastewater. However, rare studies were focused on the coupling effects of Aureomycin and Zn2+ on nitrification. This study employed a direct equipartition ray method to investigate the coupling effects of Aureomycin and Zn2+ on nitrification. The results suggested three different ratios of Aureomycin and Zn2+ affected nitrification performance differently. Ratio 1 and Ratio 2 exhibited a promotion effect with low concentrations and an inhibition effect with high concentrations on nitrification performance. The critical concentration for Ratio 1 and Ratio 2 were 5.00 mg L-1 and 1.90 mg L-1, respectively. Ratio 3 exhibited both time-dependent and concentration-dependent inhibitory effects on nitrification performance. The maximum inhibitory efficiency on nitrification performance was 90.0%, with a concentration of 34.5 mg L-1 at 96.0 h. The effects of binary mixture on nitrogen removal performance were attributed to the effects of binary mixture on nitrite oxidase activity. The qualitative evaluation of the concentration addition model and independent action model indicated Aureomycin and Zn2+ showed a synergistic effect with strong concentration-dependent and time-dependent in the whole concentration area. The synergistic effect of Aureomycin and Zn2+ on nitrite oxidase activity mainly depended on the concentration of Aureomycin. This study offers new insights into the effects of antibiotics and heavy metals on the biological nitrogen removal process.
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Affiliation(s)
- Hua Zhang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China
| | - Jing Zhang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China
| | - Hui Zhang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China
| | - Wei Jiang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China
| | - Yong Zhang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China
| | - Jian Huang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China
| | - Xue He
- Anhui Provincial Key Laboratory of Industrial Wastewater and Environmental Treatment, East China Engineering Science and Technology Co., Ltd., Hefei, 230022, China
| | - Wei Wang
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Chunhua He
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 23009, China.
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Ding Y, Li D, Li J, Lin H, Zhang Z, Chang CC, Zhi S. Relationships between arsenic biotransformation genes, antibiotic resistance genes, and microbial function under different arsenic stresses during composting. ENVIRONMENT INTERNATIONAL 2024; 184:108460. [PMID: 38335625 DOI: 10.1016/j.envint.2024.108460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/30/2023] [Accepted: 01/23/2024] [Indexed: 02/12/2024]
Abstract
Although the arsenic contamination and antibiotic resistance genes (ARGs) during composting have been studied separately, there is limited information on their interactions, particularly, the relationship between arsenic biotransformation genes (ABGs) and ARGs. Therefore, the present study used different forms of arsenic stress (organic and inorganic arsenic at 10 and 50 mg/kg) in pig manure and straw co-composting, to evaluate the effects of arsenic stress on microbial community structures, metabolic function, ABGs, and ARGs. The results showed that arsenic stress had different effects on different parameters and promoted the microbial formation of humic acid and the biodegradation of fulvic acid. Inorganic arsenic showed more rapid effects on microbial community structure, visible within about 20 days, while the effects of organic arsenic were later (about 45 days) due to the necessity of transformation. Moreover, the addition of organic roxarsone and inorganic arsenic resulted in higher expression of ABGs and ARGs, respectively. Arsenic addition also caused increased expression of genes associated with replication and repair. A significant relationship was observed between ABG and ARG expression, for instance, genes involved in arsenic reduction and oxidation were influenced by genes involved in aminoglycoside and chloramphenicol resistance genes (p < 0.05). These complex interactions among microorganisms, functional genes, and external parameters contribute to the understanding of the mechanisms underlying cross-contamination.
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Affiliation(s)
- Yongzhen Ding
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China; China-UK Agro-Environmental Pollution Prevention and Control Joint Research Centre, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Daoxian Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Jiajia Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Hui Lin
- Institute of Environment, Resource, Soil and Fertilizers, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Zulin Zhang
- The James Hutton Institute, Aberdeen AB15 8QH, UK
| | - Chein-Chi Chang
- Washington D.C. Water and Sewer Authority, Ellicott city, MD, USA
| | - Suli Zhi
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
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Zhong X, Yang Y, Liu H, Fang X, Zhang Y, Cui Z, Lv J. New insights into the sustainable use of soluble straw humic substances for the remediation of multiple heavy metals in contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166274. [PMID: 37582446 DOI: 10.1016/j.scitotenv.2023.166274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/30/2023] [Accepted: 08/11/2023] [Indexed: 08/17/2023]
Abstract
This study addresses the research gap in understanding the differences in straw decomposition and variations in humic substances (HS) extracted from various treatment conditions. The aim is to explore the potential of soluble straw HS in remediating heavy metal pollution in soils. The study characterizes straw decomposition structures using scanning electron microscopy (SEM) and X-ray diffraction (XRD), while employing gel permeation chromatography (GPC) and fluorescence spectroscopy (EEM) to analyze the molecular weight and degree of humification of extracted straw HS. The removal efficiency of HS for heavy metals is assessed, with a focus on aerobic humic substances (AE-HS) showing the highest potential for heavy metal removal. Spectral analysis and mass spectrometry analysis reveal the role of phenolic compounds, carboxylic acids, and aromatic compounds in AE-HS, forming humates or complexes to remove heavy metals from contaminated soil. Notably, the optimized AE-HS achieved the highest removal efficiency of 96.18 %, 82.75 %, 60.43 %, and 41.66 % for cadmium, copper, zinc, and lead, respectively. This study provides new insights into the preparation of straw for use as a heavy metal remover and has implications for the use of straw humic substances in soil remediation.
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Affiliation(s)
- Xianbao Zhong
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China
| | - Yajun Yang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China
| | - Hexiang Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China
| | - Xianhui Fang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China
| | - Yaohui Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China
| | - Ziying Cui
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China
| | - Jialong Lv
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, China.
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Zhang H, Xu C, Jiang W, Xi S, Huang J, Zheng M, Wang W, He C. Effects of zinc ion concentrations on the performance of SBR treating livestock wastewater and analysis of microbial community. ENVIRONMENTAL RESEARCH 2023; 236:116787. [PMID: 37517494 DOI: 10.1016/j.envres.2023.116787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Zinc ion (Zn2+) is a frequently occurring heavy metal in livestock wastewater. The effects of Zn2+ on the physicochemical properties and the microbial distribution of activated sludge are essential to controlling nitrogen removal performance. Nevertheless, there are raw studies on the effects of Zn2+ on nitrogen removal. This study investigated the effect of Zn2+ on the treatment performance of livestock wastewater in a sequencing batch reactor (SBR). The results indicated the low Zn2+ concentrations could improve nitrogen removal performance. However, as the Zn2+ concentration increased, the total nitrogen (TN) removal performance of the reactor gradually deteriorated. When the Zn2+ concentration was 90.00 mg/L, the TN removal efficiency was the lowest, only 2.40%. The contents of the Extracellular polymeric substance (EPS) presented a trend of first increasing and then decreasing with the increase of Zn2+ concentration, and the main reason was the decrease of protein-like and tryptophan-like. The 16SrRNA analysis indicated that Zn2+ within a specific concentration could increase the operational taxonomic units (OTUs) number, microbial richness, and diversity of microorganisms in the SBR. However, with Zn2+ concentration exceeding 10.00 mg/L, the relative abundance of denitrification functional bacteria (Dechloromonas, Nitrospira, and Thauera) decreased.
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Affiliation(s)
- Hua Zhang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Chong Xu
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Wei Jiang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Shanshan Xi
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Jian Huang
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China
| | - Mengqi Zheng
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Wei Wang
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Chunhua He
- Department of Municipal Engineering, School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China; Anhui Provincial Key Laboratory of Environmental Pollution Control and Waste Resource Utilization School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230009, China.
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Liu W, Cao D, Wang Y, Xu Z, Li G, Nghiem LD, Luo W. Occurrence and transformation of heavy metals during swine waste treatment: A full scale study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:164947. [PMID: 37336415 DOI: 10.1016/j.scitotenv.2023.164947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/01/2023] [Accepted: 06/14/2023] [Indexed: 06/21/2023]
Abstract
This study tracked the fate of nine detected heavy metals in an industrial swine farm with integrated waste treatment, including anoxic stabilization, fixed-film anaerobic digestion, anoxic-oxic (A/O), and composting. Results show that heavy metals exhibited different transformation behaviors in the treatment streamline with Fe, Zn, Cu and Mn as the most abundant ones in raw swine waste. The overall removal of water-soluble heavy metals averaged at 30 %, 24 % and 42 % by anoxic stabilization, anaerobic digestion and A/O unit, respectively. In particular, anoxic stabilization could effectively remove Cu, Mn and Ni; while A/O unit was highly effective for Fe, Cr and Zn elimination from water-soluble states. As such, the environmental risk of liquid products for agricultural irrigation decreased gradually to the safe pollution level in swine waste treatment. Furthermore, heavy metals in the solid (slurry) phase of these bioprocesses could be immobilized with the passivation rate in the range of 42-70 %. Nevertheless, heavy metals preferably transformed from liquid to biosolids to remain their environmental risks when biosolids were used as organic fertilizer in agriculture, thereby requiring effective strategies to advance their passivation in all bioprocesses, particularly composting as the last treatment unit.
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Affiliation(s)
- Wancen Liu
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Dingge Cao
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yongfang Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Zhicheng Xu
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Guoxue Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Long D Nghiem
- Centre for Technology in Water and Wastewater, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Wenhai Luo
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District 215128, Jiangsu Province, China.
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Ma L, Zhou Y, Wang A, Li Q. A potential heavy metals detoxification system in composting: Biotic and abiotic synergy mediated by shell powder. BIORESOURCE TECHNOLOGY 2023; 386:129576. [PMID: 37506928 DOI: 10.1016/j.biortech.2023.129576] [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: 06/10/2023] [Revised: 07/18/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023]
Abstract
Regulating heavy metal resistance genes (HMRGs) was an effective method for heavy metal resistant bacteria (HMRB) to cope with heavy metal stress during dairy manure composting. This research aimed to investigate heavy metal detoxification mediated by shell powder (SP) in composting and the response of HMRB and HMRGs to changes in heavy metal bioavailability during composting. Research showed that SP additive reduced the bioavailability of Zu, Cu, and Mn by 10.64%, 13.90% and 14.14%, respectively. SP increased the composition percentage of humic acid (HA) in humus (HS) by 8%. SP enhanced the resistance of Actinobacteria to heavy metals and improved the regulation of HMRGs. Correlation analysis demonstrated that the bioavailability of heavy metals was positively correlated with most HMRGs. HA was significantly negatively correlated with the bioavailability of Zn, Cu and Mn. Therefore, SP additive could be a novel strategy for heavy metals detoxification during composting.
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Affiliation(s)
- Liangcai Ma
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yucheng Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Ao Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Qunliang Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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Jiang W, Li D, Yang J, Ye Y, Luo J, Zhou X, Yang L, Liu Z. A combined passivator of zeolite and calcium magnesium phosphate fertilizer: Passivation behavior and mechanism for Cd (II) in composting. ENVIRONMENTAL RESEARCH 2023; 231:116306. [PMID: 37268202 DOI: 10.1016/j.envres.2023.116306] [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: 03/03/2023] [Revised: 05/27/2023] [Accepted: 05/31/2023] [Indexed: 06/04/2023]
Abstract
Passivation of heavy metals is one of the most efficient techniques to improve the quality of compost. Many studies confirmed the passivation effect of passivators (e.g., zeolite and calcium magnesium phosphate fertilizer) on cadmium (Cd), but passivators with single component could not effectively passivate Cd in the long-term operation of composting. In the present study, a combined passivator of zeolite and calcium magnesium phosphate fertilizer (ZCP) was used to explore its impacts of adding at different composting periods (heating period, thermophilic period, cooling period) on the Cd control, compost quality (e.g., temperature, moisture content and humification), microbial community structure as well as the compost available forms of Cd and addition strategy of ZCP. Results showed that Cd passivation rate could be increased by 35.70-47.92% under all treatments in comparison to the control treatment. By altering bacterial community structure, reducing Cd bioavailability and improving the chemical properties of the compost, the combined inorganic passivator could achieve high efficiency for Cd passivation. To sum up, the addition of ZCP at different composting periods has effects on the process and quality of composting, which could provide ideas for the optimization of the passivators addition strategy.
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Affiliation(s)
- Wei Jiang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Dian Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Junlin Yang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China
| | - Yuanyao Ye
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan, 430074, China.
| | - Jiwu Luo
- Central & Southern China Municipal Engineering Design and Research Institute Co,Ltd, No. 8 Jiefang Park Rord, Wuhan, 430010, China
| | - Xiaojuan Zhou
- Central & Southern China Municipal Engineering Design and Research Institute Co,Ltd, No. 8 Jiefang Park Rord, Wuhan, 430010, China
| | - Lin Yang
- Wuhan Huantou Solid Waste Operation Co., Ltd, No. 37 Xinye Road, Wuhan, 430024, China
| | - Zizheng Liu
- School of Civil Engineering, Wuhan University, No. 8 Donghu South Road, Wuhan, 430072, China
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Wu S, Tursenjan D, Sun Y. Independent and combined effects of sepiolite and palygorskite on humus spectral properties and heavy metal bioavailability during chicken manure composting. CHEMOSPHERE 2023; 329:138683. [PMID: 37059193 DOI: 10.1016/j.chemosphere.2023.138683] [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: 12/22/2022] [Revised: 03/10/2023] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
The effects of the independent and combined addition strategies of sepiolite and palygorskite on humification and heavy metals (HMs) during chicken manure composting were evaluated. Results showed that clay mineral addition showed a favorable effect on composting, prolonged the duration of the thermophilic phase (5-9 d) and improved the TN content (14%-38%) compared to CK. Independent strategy enhanced the humification degree in equal measures with the combined strategy. Carbon nuclear magnetic resonance spectroscopy (13C NMR) and fourier transform infrared spectroscopy (FTIR) confirmed that aromatic carbon species increased by 31%-33% during composting process. Excitation-emission matrix (EEM) fluorescence spectroscopy showed that humic acid-like compounds increased by 12%-15%. In addition, the maximum passivation rate of Cr, Mn, Cu, Zn, As, Cd, Pb and Ni were 51.35%, 35.98%, 30.39%, 32.46%, -87.02%, 36.61% and 27.62%, respectively. The independent addition of palygorskite exhibits the most potent effects for most HMs. Pearson correlation analysis indicated that pH and aromatic carbon were the key determinants of the HMs passivation. This study provided preliminary evidence and perspective of the application of clay minerals on the humification and safety of composting.
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Affiliation(s)
- Shihang Wu
- Key Laboratory of Original Agro‒Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China; Tianjin Key Laboratory of Agro‒Environment and Agro‒Product Safety, Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Dina Tursenjan
- Key Laboratory of Original Agro‒Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China; Tianjin Key Laboratory of Agro‒Environment and Agro‒Product Safety, Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China
| | - Yuebing Sun
- Key Laboratory of Original Agro‒Environmental Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs (MARA), Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China; Tianjin Key Laboratory of Agro‒Environment and Agro‒Product Safety, Agro‒Environmental Protection Institute, MARA, Tianjin, 300191, China.
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Bao H, Wang J, Chen Z, Wen Q, Wu Y, Fu Q. Simultaneous passivation of heavy metals and removal of antibiotic resistance genes by calcium peroxide addition during sewage sludge composting. BIORESOURCE TECHNOLOGY 2023:129267. [PMID: 37271461 DOI: 10.1016/j.biortech.2023.129267] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/27/2023] [Accepted: 05/30/2023] [Indexed: 06/06/2023]
Abstract
This research evaluated the effects of calcium peroxide (CP) at 0% (CK, w/w), 5% (T1, w/w), and 10% (T2, w/w), on heavy metals (HMs) mobility and prevalence of antibiotic resistance genes (ARGs) during sludge composting. T1 and T2 significantly reduced (p < 0.05) the mobility of Cu (29.34%, and 32.94%, respectively), Ni (24.07%, and 31.48%, respectively) and Zn (33.28%, and 54.11%, respectively) compared to CK after the composting. CP addition resulted in a decrease in mobile genetic elements (MGEs) and ARGs during composting. Together with structural equation model and random forest analysis depicted MGEs had a primary association with total ARGs variations during composting. Microbial analysis indicated CP downregulated the expression of the genes associated with two-component and type IV secretion system, thus reducing the prevalence of ARGs. This study demonstrates that application of CP is a feasible strategy to mitigate both ARGs and HMs hazards during composting.
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Affiliation(s)
- Huanyu Bao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China; School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Jiuhua Wang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China; School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Qinxue Wen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China; School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Yiqi Wu
- Research Institute of Standards and Norms, Ministry of Housing and Urban-Rural Development, Beijing 100835, PR China
| | - Qiqi Fu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, PR China; School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
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Luo X, Zhao B, Peng M, Shen R, Mao L, Zhang W. Effects of Inorganic Passivators on Gas Production and Heavy Metal Passivation Performance during Anaerobic Digestion of Pig Manure and Corn Straw. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14094. [PMID: 36360969 PMCID: PMC9654526 DOI: 10.3390/ijerph192114094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
The treatment of livestock manure caused by the expansion of the breeding industry in China has attracted wide attention. Heavy metals in pig manure can pollute soil and water and even transfer to crops, posing harm to humans through the food chain. In this study, corn straw was selected as the additive and introduced into the anaerobic digestion. Sepiolite (SE), ferric oxide (Fe2O3), attapulgite (AT) and ferric sulfate (FeSO4) were used as passivators to compare the effects of these inorganic passivators on gas production and passivation of heavy metals during the process of the anaerobic digestion. When the dry mass ratio of pig manure to straw is 8:2, the gas production efficiency is optimal. SE, AT and ferric sulfate have a much stronger ability to improve gas production performance than Fe2O3. The total gas production increased by 10.34%, 6.62% and 4.56%, and the average methane production concentration increased by 0.7%, 0.3% and 0.4%, respectively. The influence of SE, AT and ferric sulfate on the passivation of heavy metals is much better than Fe2O3, and the fractions in biological effective forms of Cu and Zn reduced by 41.87 and 19.32%, respectively. The anaerobic digestion of mixed materials is conducive to the gas production and the passivation of heavy metals. Therefore, SE, AT and ferric sulfate are selected as composite passivators, and the optimal ratio of inorganic composite passivators i: AT 7.5 g/L, ferric sulfate 5 g/L and SE 7.5 g/L, according to the results of orthogonal experiments. This study can provide a theoretical basis for the safe application of biogas fertilizers.
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Yousif Abdellah YA, Shi ZJ, Luo YS, Hou WT, Yang X, Wang RL. Effects of different additives and aerobic composting factors on heavy metal bioavailability reduction and compost parameters: A meta-analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119549. [PMID: 35644429 DOI: 10.1016/j.envpol.2022.119549] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Additives are considered a promising approach to accelerate the composting process and alleviate the dissemination of pollutants to the environment. However, nearly all previous articles have focused on the impact of additive amounts on the reduction of HMs, which may not fully represent the main factor shaping HMs bioavailability status during composting. Simultaneously, previous reviews only explored the impacts, speciation, and toxicity mechanism of HMs during composting. Hence, a global-scale meta-analysis was conducted to investigate the response patterns of HMs bioavailability and compost parameters to different additives, composting duration, and composting factors (additive types, feedstock, bulking agents, and composting methods) by measuring the weighted mean values of the response ratio "[ln (RR)]" and size effect (%). The results revealed that additives significantly lessened HMs bioavailability by ≥ 40% in the final compost products than controls. The bioavailability decline rates were -40%, -60%, -57%, -55%, -42%, and -44% for Zn, Pb, Ni, Cu, Cr, and Cd. Simultaneously, additives significantly improved the total nitrogen (TN) (+16%), pH (+5%), and temperature (+5%), and decreased total organic carbon (TOC) (-17%), moisture content (MC) (-18%), and C/N ratio (-19%). Furthermore, we found that the prolongation of composting time significantly promoted the effect of additives on declining HMs bioavailability (p < 0.05). Nevertheless, increasing additive amounts revealed an insignificant impact on decreasing the HMs bioavailability (p > 0.05). Eventually, using zeolite as an additive, chicken manure as feedstock, sawdust as a bulking agent, and a reactor as composting method had the most significant reduction effect on HMs bioavailability (p < 0.05). The findings of this meta-analysis may contribute to the selection, modification, and application of additives and composting factors to manage the level of bioavailable HMs in the compost products.
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Affiliation(s)
| | - Zhao-Ji Shi
- Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Yu-Sen Luo
- Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou, 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, Guangzhou, 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, China
| | - Wen-Tao Hou
- Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou, 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, Guangzhou, 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, China
| | - Xi Yang
- Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou, 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, Guangzhou, 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, China
| | - Rui-Long Wang
- Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou, 510642, China; Guangdong Engineering Technology Research Centre of Modern Eco-agriculture and Circular Agriculture, Guangzhou, 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, 510642, China; Heyuan Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Heyuan, 517000, China.
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