Journal of Environmental Management最新文献

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An integrated analysis for spatio-temporal evolution of food water-carbon-energy footprint and its sustainable production in northwest China.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123754
Xinlei Wu, Yunfei Fan, Yongfang Bao, Sufen Wang
{"title":"An integrated analysis for spatio-temporal evolution of food water-carbon-energy footprint and its sustainable production in northwest China.","authors":"Xinlei Wu, Yunfei Fan, Yongfang Bao, Sufen Wang","doi":"10.1016/j.jenvman.2024.123754","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123754","url":null,"abstract":"<p><p>The increasing demand for food production has led to significant resource consumption and environmental stress in ecologically fragile areas. A comprehensive quantification of the environmental impact of crop production can provide essential support for the sustainable development of agriculture in these regions. In this study, we utilized water, carbon, and energy footprint of food production to analyze its water consumption, greenhouse gas emissions and energy use. We established a comprehensive environmental footprint (CEFNI) of crop production to quantify the combined environmental impact of production. Additionally, we explored the decoupling process between food productivity and environmental pressure. and proposed sustainable development strategies for the arid regions of northwest China. The CEFNI values for wheat and maize were 0.62 and 0.68, respectively, with wheat showing significantly higher footprint values across water-carbon-energy compared to maize. The CEFNI in the northern regions was significantly lower than south, with the highest value observed in Shaanxi Province being 1.3 times greater than the lowest value recorded in the Inner Mongolia Autonomous Region. Fertilizer application emerged as the primary contributor to the water degradation footprint (WDF), as well as to carbon and energy footprints, accounting for approximately 37% of the impact. Agricultural management practices exerted the most significant influence on CEFNI, with the influence of climate factors increasing year by year. The food production in northwest arid area is adjusting to the state of \"low consumption and high efficiency\". Consequently, we propose three development plans (S1: Ecological Priority, S2: Productivity Priority, and S3: Preservation Priority) tailored to different provinces, identifying rational nitrogen fertilizer application and enhanced water.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123754"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Black soldier fly frass from seed waste of nitrogen-rich legumes - How long-term maturation affects the fertilizer properties?
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123752
Monika Kaczor, Andrzej Bieganowski, Dariusz Wiącek, Piotr Bulak
{"title":"Black soldier fly frass from seed waste of nitrogen-rich legumes - How long-term maturation affects the fertilizer properties?","authors":"Monika Kaczor, Andrzej Bieganowski, Dariusz Wiącek, Piotr Bulak","doi":"10.1016/j.jenvman.2024.123752","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123752","url":null,"abstract":"<p><p>Expanded insect production represents a source of post-breeding residues (frass) that can potentially be used as a soil additive. These types of biofertilizers are carriers of recirculated nutrients, as well as organic matter. In the present study, we investigated whether the bean waste (BW) and pea waste (PW) in the form of crushed seeds and post-production leftovers, naturally rich in proteins, were suitable as a substrate for rearing black soldier fly (Hermetia illucens) larvae. The main objective of this study was to characterize fertilizing properties of the resulting frasses (after 1 month of larvae breeding), as well as to investigate how aerobic maturation (lasted 10 months) would affect their properties. The experiment demonstrated that larval bioconversion increased the concentrations of ammonium and nitrate ions, as well as concentrations of macro- and micronutrients in the frass compared to the substrates. Raw PW frass can already be used as a fertilizer, as indicated by the appropriate ranges of N<sub>tot</sub>, EC and C/N values, while raw BW frass had low C/N and high EC, which could contribute to phytotoxic effects. Maturation of frass improved the properties of BW frass, but worsened some characteristics of PW frass, such as an excessive increase in the C/N ratio, which could result in nitrogen immobilization. At the same time, maturation caused further increase in micro- and macronutrients concentration, which meant that both variants of the mature frass were rich in elements necessary for plant development.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123752"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shifts in the ecological drivers influence the response of tree and soil carbon dynamics in central Himalayan forests.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123755
Anand Shankar, Satish Chandra Garkoti
{"title":"Shifts in the ecological drivers influence the response of tree and soil carbon dynamics in central Himalayan forests.","authors":"Anand Shankar, Satish Chandra Garkoti","doi":"10.1016/j.jenvman.2024.123755","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123755","url":null,"abstract":"<p><p>Understanding and regulating global carbon relies crucially on comprehending the components and services of forest ecosystems. In particular, interactions that govern carbon storage in trees, soil, and microbes, driven by factors like vegetation structure, function, and soil characteristics, remain poorly understood, especially in the central Himalayas. To address this gap, we investigated carbon storage in tree aboveground biomass, root biomass, and soil across different vegetation types. We also examined how vegetation parameters {vegetation diversity (H'), diameter at breast height (DBH), basal area (BA), and biomass}, and soil characteristics {bulk density (BD), moisture (M<sub>o</sub>), pH, and total nitrogen (N)} might influence forest carbon storage. Our study, based on 14 plots (0.1 ha each) spanning four distinct vegetation types {Sal forest (SF, 3), Chir-pine forest (PF, 4), Nepalese-alder forest (AF, 3), and Banj-oak forest (OF, 4)} in the central Himalaya, revealed several key insights. Tree carbon storage ranged from ∼79 to 261 Mg C ha<sup>-1</sup>, accounting for 41-65% of forest carbon storage, while soil carbon storage ranged from ∼28 to 69 Mg C ha<sup>-1</sup>, contributing 35-58%. These values varied with vegetation types and were influenced by the vegetation and soil characteristics associated with each forest type. Important contributors to tree and soil carbon storage included soil M<sub>o</sub>, N, and vegetation structural diversity (H', BA), explaining 8-64 % of the variation. Path analysis indicated that increased vegetation diversity, soil properties, and conservative traits (fine roots and leaves) strongly influence tree and soil carbon storage. The study highlights the potential complex system to optimizing carbon storage in natural forest ecosystems, offering valuable insight for managing carbon sinks. Further research is needed to fully understand ecosystem responses to carbon storage across different forest habitats and different spatial-temporal scales.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123755"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to 'Managing semi-arid oak forests (Quercus brantii Lindl.): Mature oak trees of different dimensions create contrasted microhabitats influencing seedling quality' [J. Environ. Manag. 304 (2022) 114-269/Article Number].
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123679
Mehdi Heydari, Hamzeh Asadi-Rad, Jaafar Hosseinzadeh, Somayeh Hajinia, D Alexander Wait, Bernard Prevosto
{"title":"Corrigendum to 'Managing semi-arid oak forests (Quercus brantii Lindl.): Mature oak trees of different dimensions create contrasted microhabitats influencing seedling quality' [J. Environ. Manag. 304 (2022) 114-269/Article Number].","authors":"Mehdi Heydari, Hamzeh Asadi-Rad, Jaafar Hosseinzadeh, Somayeh Hajinia, D Alexander Wait, Bernard Prevosto","doi":"10.1016/j.jenvman.2024.123679","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123679","url":null,"abstract":"","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":" ","pages":"123679"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatial pattern of critical wetland patches and its influencing factors in a coastal area, North China.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123741
Ziyuan Zhang, Jintong Liu, Hui Gao, Feng Wang, Baijun Shang, Mei Zhang, Tonggang Fu
{"title":"Spatial pattern of critical wetland patches and its influencing factors in a coastal area, North China.","authors":"Ziyuan Zhang, Jintong Liu, Hui Gao, Feng Wang, Baijun Shang, Mei Zhang, Tonggang Fu","doi":"10.1016/j.jenvman.2024.123741","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123741","url":null,"abstract":"<p><p>Knowing the spatial pattern of critical wetland patches has an important significance for the restoration and protection of wetland ecosystems. However, the spatial pattern of critical wetland patches in coastal areas is not well understood, and its influencing factors are also unclear, especially in coastal areas. In this study, landscape indices were used to study the spatial pattern of the wetlands in the Hebei-Tianjin coastal area, North China. Correlation analysis, analysis of variance, and structural equation modeling were used to study the influences of environmental and human factors. The results revealed that a total of 211 important wetland patches were located in the Hebei-Tianjin coastal area. The average area of these patches was 182.38 ha, the largest patch was 15,173.32 ha, and the smallest patch was 1.10 ha. The coefficient of variation of the patch area was 6.11, indicating a strong variation. The landscape indices that reflect the distribution characteristics (Distribution-Indices) had higher values in the south than in the north, while the landscape indices that reflect the shape characteristics (Shape-Indices) had lower values in the south than in the north. This indicates that the critical patches in the south were more aggregated, but their shapes were simpler than those in the north. The soil type and temperature were two important environmental factors, and the population density, gross domestic product, and aquaculture were important human factors that influenced the landscape pattern of the wetland patches. Both the environmental factors and human factors influenced the Distribution-Indices more than the Shape-Indices. The environmental factors mainly exerted direct effects on the Shape-Indices, while they had both direct and indirect effects on the Distribution-Indices. The human factor exerted a significantly higher effect on the distribution indices compared to the environmental factors, while their effects were similar for the shape index. The results of this study suggest that human disturbances should be controlled, especially in protecting the distribution of wetlands.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123741"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Twenty-five years on: Widespread kelp forest decline revealed in a potential climatic refugium.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123734
Sara Barrientos, Cristina Piñeiro-Corbeira, Rodolfo Barreiro
{"title":"Twenty-five years on: Widespread kelp forest decline revealed in a potential climatic refugium.","authors":"Sara Barrientos, Cristina Piñeiro-Corbeira, Rodolfo Barreiro","doi":"10.1016/j.jenvman.2024.123734","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123734","url":null,"abstract":"<p><p>Kelp forests are key temperate ecosystems that experience the combined effects of global and local stressors throughout their distribution range. Niche modelling projections identified NW Spain, a region influenced by an intense upwelling system, as one such potential refugium. However, the recent discovery that fish overgrazing has eradicated kelp forests from certain reefs calls into question the validity of these projections. To determine the actual persistence of kelp forests (Laminaria ochroleuca and Laminaria hyperborea) on a regional scale, we resurveyed 50 sites in 2023 where kelp forests had been recorded up to 25 years earlier. Kelp had either disappeared or been reduced to a few scattered individuals at two-thirds (58%) of the sites. Furthermore, where kelp forests persist, L. ochroleuca is now the dominant canopy-forming kelp, while L. hyperborea has only been recorded at two sites. Kelp forest persistence was negatively correlated with summer sea surface temperature and wave exposure. Altogether, our results indicate that kelp forest decline is widespread in NW Spain, challenging the view of this region as a climate refugium and underscoring the difficulty of accurately predicting the trajectory of such complex and fragile ecosystems. Furthermore, in line with the recommendations of the OSPAR Convention, this study lays the foundation for a long-term monitoring network along a region where kelp forests are undergoing rapid change.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123734"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A critical review of in-situ moisture distribution detection and characterization techniques utilizing deep dewatering for organic waste.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123710
Yuanxin Li, Pinjing He, Hua Zhang, Fan Lü
{"title":"A critical review of in-situ moisture distribution detection and characterization techniques utilizing deep dewatering for organic waste.","authors":"Yuanxin Li, Pinjing He, Hua Zhang, Fan Lü","doi":"10.1016/j.jenvman.2024.123710","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123710","url":null,"abstract":"<p><p>Deep dewatering is crucial for effectively reducing the volume of organic waste and facilitating its downstream transportation and disposal. An in-depth understanding of the occurrence states, composition, and morphological characteristics of moisture in organic waste is the basis for optimizing the dewatering process, improving dewatering efficiency, and reducing energy consumption. Given the common problems of time-consuming, low sensitivity, and poor parallelism of traditional methods, this work reviews the advanced in-situ analysis methods for moisture distribution of organic waste. The Raman microscopy imaging technique is highlighted to provide a new approach for visualizing the spatial distribution of moisture with different binding strengths in solid flocs. Various physical, chemical, and biological characteristics and characterization methods of organic waste related to deep dewatering are introduced, and they are correlated with conditioning methods. Almost all conditioning will cause changes in the physical characteristics of organic waste, while the improvement of dewatering performance is actually caused by changes in the chemical composition and biological characteristics of the matrix, and these characteristics are intrinsically related to the moisture distribution. The characterization and in-situ moisture detection methods presented in this work aim to support future studies in understanding changes in material composition related to improving dewatering performance and further clarifying the mechanisms of deep dewatering of organic wastes.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123710"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of the complex correlations between land use and water quality using the PLS-SEM method combined with fluorescence fingerprinting data.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123688
Hantao Zhu, Ganghui Tong, Niangming Duan, Haichuan Ma, Qingbin Song, Jiale Wang, Yi Luo, Qixin Zhang, Xubiao Yu, Shu-Quan Jin
{"title":"Analysis of the complex correlations between land use and water quality using the PLS-SEM method combined with fluorescence fingerprinting data.","authors":"Hantao Zhu, Ganghui Tong, Niangming Duan, Haichuan Ma, Qingbin Song, Jiale Wang, Yi Luo, Qixin Zhang, Xubiao Yu, Shu-Quan Jin","doi":"10.1016/j.jenvman.2024.123688","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123688","url":null,"abstract":"<p><p>Accurate analysis of surface water pollution mechanisms is critical for effective environmental restoration and protection. However, evaluation methods for small watersheds with dense populations and complex pollution sources remain limited. This study integrates partial least squares structural equation modeling (PLS-SEM) with fluorescence fingerprinting data from excitation-emission matrix-parallel factor analysis (EEM-PARAFAC) to investigate nutrient sources in rivers of southeastern China. The findings reveal that land use intensity (LUI) significantly influences pollutant concentrations, but the presence of outliers underscores complex pollution mechanisms. Using EEM-PARAFAC components as mediators, the C5 component, representing sewage-derived substances, was identified as a key driver, fully mediating nitrogen (β = 0.953, p < 0.001, VAF = 117.5%) and phosphorus (β = 0.921, p < 0.001, VAF = 113.2%) levels. In contrast, agricultural non-point sources (C1 and C2: β = -0.270, p > 0.05) had negligible direct effects on nutrient concentrations, emphasizing the need to prioritize domestic sewage control. Additionally, components C1 and C2 exerted strong direct effects on dissolved organic carbon (β = 0.495, p < 0.001), surpassing the influence of sewage (β = 0.380, p < 0.001). These results demonstrate that the combined use of PLS-SEM and EEM-PARAFAC is a robust approach for identifying pollution sources in data-limited small watersheds, supporting cost-effective aquatic environmental restoration strategies.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123688"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clearing the path: Unraveling bisphenol a removal and degradation mechanisms for a cleaner future.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123558
Sourav Kundu, Basanta Kumar Das, Abhilash Wodeyar, Poonam Majumder, Susmita Jana, Ayan Biswas, Sagarika Das, Rinku Besra
{"title":"Clearing the path: Unraveling bisphenol a removal and degradation mechanisms for a cleaner future.","authors":"Sourav Kundu, Basanta Kumar Das, Abhilash Wodeyar, Poonam Majumder, Susmita Jana, Ayan Biswas, Sagarika Das, Rinku Besra","doi":"10.1016/j.jenvman.2024.123558","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123558","url":null,"abstract":"<p><p>Bisphenol A (BPA) is a prevalent chemical found in a range of consumer goods, which has raised worries about its possible health hazards. Comprehending the breakdown pathways of BPA is essential for evaluating its environmental consequences and addressing associated concerns. This review emphasizes the significance of studying the degradation/removal of BPA, with a specific focus on both natural and artificial routes. It explores natural processes such as photolysis, hydrolysis, and biodegradation, as well as manmade methods including advanced oxidation processes (AOPs) and enzymatic degradation. Examining the decomposition of BPA helps to understand how it behaves in the environment, providing valuable information for managing risks and addressing pollution. Furthermore, comprehending degradation mechanisms aids in the creation of more secure substitutes and regulatory actions to reduce BPA exposure and safeguard human health. This review emphasizes the need of promptly addressing this environmental and public health concern through the research of BPA degradation.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123558"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effective organic matter removal via bio-adsorption prior to anammox process and utilization of carbon-rich sludge.
IF 8 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2024-12-18 DOI: 10.1016/j.jenvman.2024.123777
Kunming Fu, Wenbing Yang, Sibo Fu, Yihao Bian, Aotong Huo, Teng Guan, Xueqin Li, Ruibao Zhang, Hao Jing
{"title":"Effective organic matter removal via bio-adsorption prior to anammox process and utilization of carbon-rich sludge.","authors":"Kunming Fu, Wenbing Yang, Sibo Fu, Yihao Bian, Aotong Huo, Teng Guan, Xueqin Li, Ruibao Zhang, Hao Jing","doi":"10.1016/j.jenvman.2024.123777","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.123777","url":null,"abstract":"<p><p>Excessive organic matter in the anaerobic ammonia oxidation (Anammox) leads to the growth of a large number of heterotrophic bacteria, which disrupts the anaerobic ammonia oxidation. The adsorption-anaerobic ammonia oxidation process can effectively reduce excessive organic matter, capturing it instead of consuming it, which is a sustainable development technology. In this study, utilizing the excellent adsorption performance of aerobic granular sludge (AGS), an adsorption-regeneration process was employed to remove organic matter at the front end of the Anammox process through bio-adsorption in an artificial simulated domestic sewage environment, and it was successfully used for denitrification. Stirring rate is a key factor affecting sludge granulation. As a parallel experiment of sludge granulation, two Sequencing Batch Reactors (SBRs) (R1 and R2) were operated simultaneously at different stirring rates. After 153 days, the particle size of the two reactors was analyzed, revealing that the proportion of particles larger than 200 μm was over 50%, and granular sludge was successfully formed in both reactors. Long-term operational results indicate that at a temperature of 16.5 ± 1 °C, varying initial pH levels (6.5, 6.7, 7.2, and 8.5) significantly affect the removal efficiency of chemical oxygen demand (COD). COD is rapidly adsorbed and removed within a short period. Among the tested initial pH values, a pH of 6.7 yielded the best total chemical oxygen demand (tCOD) removal efficiency, achieving up to 95%. Additionally, the study examined the effects of different carbon sources on denitrification, revealing that under carbon-rich conditions, the denitrification rate was highest, reaching 1.44 mg N/(g VSS·h). Compared to endogenous denitrification, the denitrification rate increased by 40%, and the nitrate (NO₃⁻-N) removal efficiency reached 100%.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"373 ","pages":"123777"},"PeriodicalIF":8.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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