24年11月5日文献情报（13篇）

24年11月5日文献情报

1. 题目: Synergistic water quality and soil organic carbon sequestration benefits of winter cover crops.

文章编号: N24110513
期刊: Journal of Environmental Management
作者: Xuesong Zhang, Yiming Wang, Sangchul Lee, Kang Liang, Kaiguang Zhao, Gregory W McCarty, Joseph G Alfieri, Glenn E Moglen, W Dean Hively, Daniel T Myers, Diana Oviedo-Vargas, Tam V Nguyen, Audra L Hinson, Ling Du, Xiaobo Xue Romeiko
更新时间: 2024-11-05
摘要: Winter cover crops (WCCs) are promising best management practices for reducing nitrogen and sediment pollution and increasing soil organic carbon (SOC) sequestration in agricultural fields. Although previous watershed studies assessed water quality benefits of growing WCCs in the Chesapeake Bay watershed, the SOC sequestration impacts remain largely unknown. Here, we designed six WCC scenarios in the Tuckahoe Watershed (TW) to understand potential synergies or tradeoffs between multiple impacts of WCCs. Besides corroborating the nitrate reduction benefits of WCCs that have been reported in previous studies, our results also demonstrated comparable reduction in sediment. We also found that the six WCC scenarios can sequester 0.45-0.92 MgC ha-1 yr-1, with early-planted WCCs having more than 70% SOC sequestration benefits compared with their late-planted counterparts. With a linear extrapolation to all the cropland in Maryland, WCCs hold potential to contribute 2.1-4.4% toward Maryland's 2030 Greenhouse Gases reduction goal. Additionally, we showed that WCCs can noticeably increase evapotranspiration and decrease water yield and streamflow, potentially impacting aquatic ecosystem health and water supply. Overall, this study highlights the synergistic water quality and SOC sequestration benefits of WCCs in the Chesapeake Bay watershed. Meanwhile, sustainable adoption of WCCs into existing crop rotations will also require careful assessment of their impact on water availability.
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2. 题目: Partitioning Ganoderma lucidum residue biochar differentially boosts anaerobic fermentation performance of cow manure via mediation of anaerobic microbiota assembly.

文章编号: N24110512
期刊: Journal of Environmental Management
作者: Yajing Wang, Yan Yang, Jiahui Sun, Yueqi Wang, Xiujie Liu, Jingyu Cao, Aiai Zhang, Chunfang Shi, Jiangang Pan
更新时间: 2024-11-05
摘要: Biochar is a promising strategy to solve the problem of low efficiency and ammonia inhibition during anaerobic digestion (AD). However, the correlation between biochar partitioning and its stimulatory effects on AD remains uncertain. Here, the effects of partitioned Ganoderma lucidum residue biochar (GLRB) on biogas and methane production were investigated. The GLRB produced at 450 °C, with richer functional groups on its surface, had the optimal enhancement effect on AD, resulting in a 20.59% increase in methane production compared with control. The doses of water-soluble GLRB (LZ450-W) and water-insoluble GLRB (LZ450-R) were not proportional to their enhancement effect on AD. However, the enhancement effect on AD by LZ450-R was better than that of LZ450-W. The optimal dosage of LZ450-W was 0.015 g, which increased methane production by 14.28%. Similarly, methane production increased by 26.91% with the addition of 0.603 g of LZ450-R. LZ450-R had more abundant functional groups on the surface and promoted the abundance of bacteria in the dominant phyla Bacteroidetes, Synergistetes, and Spirochaetes, increasing the rate of hydrolysis. Additionally, methanogens such as Methanobacterium and Methanospirillum were enriched, facilitating methane production by promoting the hydrogenotrophic pathway. Methanobacterium was also negatively correlated with most acid-producing bacteria, whereas Methanobrevibacter was positively correlated with Methanosphaera, Acetivibrio, and other acid-producing bacteria. These findings provide a basis for constructing synthetic microbial communities using biochar as a carrier of microbial inoculum.
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3. 题目: Valorizing meat processing industry brines to produce added-value organic acids.

文章编号: N24110511
期刊: Journal of Environmental Management
作者: Miguel Martinez-Quintela, Gemma Casas, Manuel Carramal, Esther Vega, Laia Llenas, Lidia Paredes
更新时间: 2024-11-05
摘要: During the production of certain meat processed products, such as cured ham and cold meat, large amounts of wastewater with high organic matter and salt content are generated. In contrast with the conventional management processes, which involves high energy consumption, this study proposes the valorisation of such meat brines through anaerobic fermentation to produce added-value organic acids. Several brines coming from different meat processing processes were tested to evaluate their acidification potential as well as to establish the main operation parameters in the fermenter: pH and the substrate-to-inoculum ratio. The brine with the best acidification results in both experiments was selected to be fed into a fed-batch fermenter at pH close to neutrality (6.5-7.3) and with an HRT of 6 d. With such conditions, a 27% of acidification in average was observed under an electrical conductivity up to 155 mS cm-1. Acetic and propionic acid were the most produced volatile fatty acids (VFAs) (39% and 22.0%, respectively), being the rest (up to 40%) ≥ C4 (including butyric, valeric and their isomeric forms). Finally, a selective separation between the salt and the VFAs were achieved working at low current density (<100 A m-2) in an electrodialysis system (80% of recovery in the diluate). The technological approach proposed in this study can be considered as a starting point to valorize high-salinity industrial wastewater, aligning with the circular economy model principles.
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4. 题目: Aridity-Driven Change in Microbial Carbon Use Efficiency and Its Linkage to Soil Carbon Storage

文章编号: N24110510
期刊: Global Change Biology
作者: Junmin Pei, Changming Fang, Bo Li, Ming Nie, Jinquan Li
更新时间: 2024-11-05
摘要: Global warming is generally predicted to increase aridity in drylands, while the effects of aridity changes on microbial carbon use efficiency (CUE) and its linkage to soil organic carbon (SOC) storage remain unresolved, limiting the accuracy of soil carbon dynamic predictions under changing climates. Here, by employing large-scale soil sampling from 50 sites along an ~6000 km aridity gradient in northern China, we report a significant decreasing trend in microbial CUE (ranging from approximately 0.07 to 0.59 across the aridity gradient) with increasing aridity. The negative effect of aridity on microbial CUE was further verified by an independent moisture manipulation experiment, which revealed that CUE was lower under lower moisture levels than under higher moisture levels. Aridity-induced increases in physicochemical protection or decreases in microbial diversity primarily mediated the decrease in CUE with increasing aridity. Moreover, we found a highly positive microbial CUE–SOC relationship, and incorporating CUE improved the explanatory power of SOC variations along the aridity gradient. Our findings provide empirical evidence for aridity-induced reductions in microbial CUE over a broad geographic scale and highlight that increasing aridity may be a crucial mechanism underlying SOC loss by suppressing the ability of soil microorganisms to sequester carbon.
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5. 题目: Biochar-supported atomically dispersed copper as cost-effective and adaptable catalysts for heterogeneous activation of peroxymonosulfate towards the degradation of chlorophenol

文章编号: N24110509
期刊: Journal of Environmental Chemical Engineering
作者: Jiangling Mao, Hongzhi Chen, Ke Tian, Taiping Qing, Xiaoqing Liu, Shunfeng Jiang, Haijiao Xie
更新时间: 2024-11-05
摘要: It is highly desirable to design stable catalysts for efficient pollutants degradation in wastewater treatment. Biochar is a widely used catalyst for pollutant degradation, but the catalytic performance needs to further improve by increasing the active sites. Herein, a nitrogen-doped biochar-supported highly dispersed copper atom catalyst (Cu-NBC) was synthesized by a pyrolysis method, and used for peroxymonosulfate (PMS) activation to remove contaminants from wastewater. The low cost and environmental friendliness exhibited an excellent catalytic performance in permonosulfate activation. Under the ideal reaction conditions, the Cu-NBC/PMS system achieves a 100% removal rate of 4-chlorophenol (4-CP) and a 74.68% mineralization efficiency within 60 min. X-ray absorption near-edge structure (XANES) and density functional theory (DFT) calculations show that each single Cu atom is anchored by three N atoms in the form of CuN₃ active site. Singlet oxygen (¹O₂) has been demonstrated as the primary active component in the degradation of 4-CP. Based on the by-products detected by LC-MS and DFT calculations, a plausible degradation pathway for 4-CP was proposed, and the toxicity of these intermediates was assessed using the ECOSAR procedure. This study provides a new way to prepare atomically dispersed copper to activate PMS for wastewater treatment.
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6. 题目: Differences in the regulation of soil carbon pool quality and stability by leaf-litter and root-litter decomposition

文章编号: N24110508
期刊: Environmental Research
作者: Jia Zeng, Xiangyang Li, Junnan Jian, Liheng Xing, Yu Li, Xing Wang, Qi Zhang, Chengjie Ren, Gaihe Yang, Xinhui Han
更新时间: 2024-11-05
摘要: Litter plays a crucial role in soil ecosystems. However, the differences in decomposition between leaf-litter and root-litter and their relative contributions to soil carbon pools and stability are not yet clear. Therefore, we conducted a 450-day in situ decomposition experiment in a semi-arid grassland to investigate the effects of soil biophysical and chemical properties on litter decomposition and to elucidate the dynamics of soil carbon pools during the decomposition process. The results showed that the decomposition rate (K) of leaf-litter was significantly higher than that of root-litter, and litter quality was the most important factor affecting the K of leaf-litter (58%) and root-litter (63%). Leaf-litter decomposition was more effective in promoting the increase in soil leucine aminopeptidase and β-1,4-glucosidase activities, as well as the accumulation of microbial biomass carbon (MBC), particulate organic carbon (POC), and dissolved organic carbon (DOC), compared to root-litter. However, the difference in the impact of leaf-litter and root-litter on soil organic carbon (SOC) was not significant. The decomposition of leaf-litter contributed more significantly to enhancing the soil carbon pool management index (CPMI) compared to root-litter, with increases of 39% and 25%, respectively. In contrast, leaf-litter decomposition significantly reduced the mineral-associated organic carbon (MAOC) and the MAOC/POC ratio, while root-litter decomposition significantly increased the MAOC and MAOC/POC. Random forest, partial correlation, and path analysis indicated that the effects of leaf-litter and root-litter decomposition on CPMI were mainly regulated by decomposition time and soil carbon components, while the effects on MAOC/POC were mainly controlled by litter quality. The results demonstrate that both leaf-litter and root-litter can enhance soil carbon storage and CPMI, but root-litter may be more beneficial for soil carbon pool stability. These results further contribute to the understanding of the continuous system of litter-soil carbon pools.
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7. 题目: The effects of physical form, moisture, humic acids, and mixtures on the photolysis of insensitive munitions compounds.

文章编号: N24110507
期刊: Science of the Total Environment
作者: Warren M Kadoya, Samuel A Beal, Susan Taylor, Katerina Dontsova
更新时间: 2024-11-05
摘要: The explosive formulations IMX-101 and IMX-104 are replacing conventional explosives in munitions, making them safer to transport and handle. However, munitions manufacturing and military training can lead to the environmental release of constituent insensitive munitions compounds (IMCs) such as 2,4-dinitroanisole (DNAN), 3-nitro-1,2,4-triazol-5-one (NTO), and nitroguanidine (NQ). These IMCs absorb ultraviolet light and transform photochemically into products with potentially greater toxicity. This study explores the effects of physical form, moisture, humic acids, and compound mixtures on the photolysis of solid and dissolved IMCs under UV-A (350 nm) and UV-B (300 nm) light. Irradiation of dry vs. moist solid IMC crystals yielded few measured products, and while photolysis rates were not significantly different, they were orders of magnitude slower than for aqueous IMCs. There was no significant difference in photolysis rates for aqueous IMCs irradiated with 0, 0.4, and 4 mg L-1 humic acids, but 40 and 400 mg L-1 humic acids inhibited NTO and enhanced NQ photolysis. In two- and three-component aqueous mixtures, DNAN photolysis was enhanced by NQ (at 300 and 350 nm) and NTO (at 350 nm); NTO photolysis was inhibited by DNAN and enhanced by NQ (both at 300 nm); and NQ photolysis was inhibited by both DNAN and NTO (both at 300 and 350 nm). The average quantum yields of the IMCs irradiated alone in solution were: 8.29 × 10-5 (300 nm) and 6.26 × 10-5 (350 nm) for DNAN; 5.76 × 10-4 (300 nm) and 1.74 × 10-4 (350 nm) for NTO; and 1.01 × 10-2 (300 nm) and 1.14 × 10-4 (350 nm) for NQ. Although organic and inorganic products were detected in the mixtures, an average of 15-35 % of the theoretical starting IMC masses (as nitrogen) was not accounted for. Overall, aqueous IMCs transformed 4-48 times faster than the solid IMCs, but the environmentally-relevant conditions tested were found to play a minor role in IMC photolysis.
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8. 题目: Stabilization of sulfidated nano zerovalent iron with biochar: Enhanced transport and application for hexavalent chromium removal from water.

文章编号: N24110506
期刊: Journal of Environmental Management
作者: Hao Cheng, Xiaoyu Zheng, Yi Zhu, Ping Wang, Jian Zhu, Jie Wei, Zili Liu, Chao Huang
更新时间: 2024-11-05
摘要: Nano zerovalent iron (nZVI) has been broadly used in the treatment of chromium (Cr) pollution. However, conventional nZVI particles are prone to surface oxidation and particle agglomeration, limiting their effectiveness in contaminant removal. To address these issues, sulfidated nZVI (S-nZVI) was synthesized on the corn stover biochar (BC) surface for rapid removal of Cr(VI) from water. Sedimentation and column transport experiments demonstrated that S-nZVI@BC exhibits excellent dispersion and transport properties, efficiently removing Cr(VI) in the pH range of 2.5-5.0 and showing minimal impact from dissolved oxygen. The Fe0, Fe(Ⅱ), and S2- components of the material, along with the leached Fe2+ ions, contributed to the Cr(VI) removal. A portion of the removed Cr(VI) was reduced to Cr(III) in solution, while another portion was adsorbed on the material's surface through precipitation, with 42.0% of Cr being adsorbed within 30 min. Cycling and water matrix interference experiments further demonstrated the material's excellent reusability and resistance to interference. Notably, the continuous Cr(VI) removal capability in column experiments and the reactivation potential of S-nZVI@BC highlight its promise for practical applications. Future studies are suggested to explore the ecotoxicological effects of the S-nZVI@BC and its capacity for the simultaneous removal of multiple contaminants.
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9. 题目: Fungi present distinguishable isotopic signals when grown on glycolytic versus tricarboxylic acid cycle intermediates

文章编号: N24110505
期刊: Biogeosciences
作者: Stanislav Jabinski, Vítězslav Kučera, Marek Kopáček, Jan Jansa, Travis B Meador
更新时间: 2024-11-05
摘要: . Microbial activity in soils controls both the size and turnover rates of large carbon (C) inventories stored in the subsurface, having important consequences for the partitioning of C between terrestrial and atmospheric reservoirs as well as the recycling of mineral nutrients such as nitrogen or phosphorus, often bound to the C, that support plant growth. Fungi are major decomposers of soil organic matter (SOM); however, uncertainty in the predominant C substrates that fuel respiration confound models of fungal production and SOM turnover. To further define the signals of microbial heterotrophic activity, we applied a dual hydrogen (H) and C stable isotope probing (SIP) approach on pure fungal cultures representing the phyla Ascomycetes, Basidiomycetes, and Zygomycetes growing on monomeric (glucose, succinate) or complex substrates (tannic acid, β-cyclodextrin). Our findings demonstrate that the investigated species incorporated only minor amounts of inorganic C (provided as bicarbonate) into their membrane lipids, amounting to < 3 % of lipid-C, with no consistent patterns observed between species or growth substrates. The net incorporation of water-derived H (i.e., α_W) into lipids also did not differ significantly between incubations with monomeric versus complex substrates; however, growth on succinate solicited significantly higher α_W values than glucose or β-cyclodextrin. This finding suggests that ²H-SIP assays have the potential to distinguish between microbial communities supported predominantly by substrates that are catabolized by the tricarboxylic acid cycle versus glycolytic pathway. Furthermore, the average α_W value of heterotrophic fungal incubations [0.69 ± 0.03 (SEM)] is consistent with that observed for bacterial heterotrophs, and may be applied for upscaling lipid-based estimates of fungal production in environmental assays.
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10. 题目: The Potential to Reconstruct 20th Century Soil Organic Carbon Erosion in Rangelands From Small Reservoir Sediments

文章编号: N24110504
期刊: Land Degradation & Development
作者: Lu Li, Juliane Krenz, Anja Pregler, Philip Greenwood, Nikolaus J Kuhn
更新时间: 2024-11-05
摘要: Soil erosion and soil organic carbon (SOC) loss are not always linked linearly because SOC-rich topsoil is eroded at the initial stages of degradation, while horizons with lower SOC content are eroded later, but often at higher rates. Small, silted-up farm reservoirs potentially document this change during the period of sediment accumulation. This study tests the specific potential of small farm reservoir sediments from the South African Karoo to reconstruct 20th century SOC and total nitrogen (TN) change in rangeland soils. Five reservoir sediment profiles were sampled and texture, total organic carbon (TOC), TN and ¹³⁷Cs of the samples were analyzed and compared. The results show that there clearly distinguishable flood couplets have been preserved in the sediment, illustrating their suitability for the chronological reconstruction of soil erosion and SOC. With one exception, the older sediments contain more TOC and TN than the younger ones. The TOC changed mostly in earlier than later stages of deposition, which is indicative of soil degradation early after the construction of the dams in the 1920s and 1930s. These distinct changes illustrate that the small reservoir sediments have the potential to reconstruct the impact of land-use and associated soil erosion on SOC change in rangelands. Their analysis can therefore contribute to a better understanding of the land-use associated changes of the global carbon cycle during the 20th century.
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11. 题目: Mechanism of extracellular polymeric substance production and its contribution to anaerobic digestion foaming: Insights from cellular signalling

文章编号: N24110503
期刊: Chemical Engineering Journal
作者: Wenjie Ye, Lei Li, Pingjin Yang, Zhi Zhang, Linpei Han, Ronghuan Yuan, Xuya Peng
更新时间: 2024-11-05
摘要: To elucidate the mechanism behind extracellular polymeric substance (EPS) overproduction during foaming, foaming events were induced through the overloading of anaerobic digestion (AD) reactors, and the responses of process parameters, EPS-related parameters, and signal transduction-related genes were monitored. The results demonstrated that EPS overproduction was the main cause of foaming events in AD systems. Noteworthy, EPS concentration was significantly correlated with foam height (FH) (p < 0.01), while the concentrations of inhibitors, such as volatile fatty acids (VFAs) and ammonia nitrogen, were not correlated with FH during the rapid foam growth stage (p > 0.05). Furthermore, EPS production was regulated by both environmental stress and microbial cellular signalling system. Specifically, the increase in OLR led to a gradual accumulation of VFAs in the digesters (from 273 to 6179.7 mg/L). The accumulation of VFA activated microbial chemotactic functions and promoted the synthesis and secretion of environmental signaling molecules such as acyl-homoserine lactones (AHLs) and intracellular signaling molecules such as c-di-GMP and c-di-AMP. These signaling molecules stimulated EPS production to protect the microorganisms, which in turn facilitated the recovery of reactor performance and the reduction of VFA levels. However, the increase in community density due to chemotaxis increased the concentration of AHLs, which in turn enhanced AHL-mediated quorum sensing. Consequently, even after the accumulated VFA concentration decreased, both EPS production and FH continued to increase rapidly. Therefore, the continuous enhancement of AHL-mediated quorum sensing might be the main factor behind EPS overproduction, and controlling AHL concentration through quorum sensing quenching (to prevent the over-production of EPS) might prevent AD foaming events.
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12. 题目: Mobilization and enrichment of geogenic iodine in a floodplain groundwater system: New insights from sources and characterization of dissolved organic matter.

文章编号: N24110502
期刊: Science of the Total Environment
作者: Ge Jiang, Chunli Su, Haifeng Liu, Xianguo Wang, Jiaqi Jiang, Jiaqi Li
更新时间: 2024-11-05
摘要: High iodine groundwater occurs widely in the lower reaches of Yellow River floodplain, which has aroused public concern. The biogeochemical behavior of dissolved organic matter (DOM) plays a crucial role in the mobilizing iodine from aquifer media. In this study, the molecular composition of DOM in groundwater characterized by FT-ICR-MS, and the optical properties of organic matter obtained by combining three-dimensional fluorescence spectroscopy and parallel factor analysis (EEM ⁃ PARAFAC), were used to elucidate the effect of DOM on the migration and enrichment of iodine in groundwater in the eastern Henan Plain, which is located in the lower reaches of Yellow River floodplain, Northern China. The results show that，the total iodine concentration in groundwater in the study area is ranged from 4.68 to 1598 μg/L, and the average value was 216.4 μg/L. High iodine groundwater shows a distribution pattern along the Paleochannels of Yellow River, which is closely related to the richness of organic matter in the buried sediments of the Paleochannels of Yellow River. Organic matter in the sedimentary aquifers plays an important role in regulating the mobilization and enrichment of iodine, and its degradation process is conducive to the release of iodine. DOM components in high iodine groundwater are more homogeneous, more unsaturated, and has more aromatic molecules than those in low iodine groundwater. The activation of organic iodine in groundwater system may be accompanied by the degradation of N+ aliphatic compounds (CHON, CHONSP and CHON) and the formation of oxygen-poor highly unsaturated phenols (CHOSP, CHOP and CHOS) organic compounds. In addition to biodegradation, the adsorption of iron oxide rich in sedimentary aquifers can partially remove the high AI and O/C components of DOM in groundwater and enrich the remaining OPHUP components. The findings provide new insights into the coupling mechanism between iodine release and DOM in aquifers.
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13. 题目: Bayesian inversion of bacterial physiology and dissolved organic carbon biodegradability on water incubation data.

文章编号: N24110501
期刊: Science of the Total Environment
作者: Shuaitao Wang, Nicolas Flipo, Josette Garnier, Thomas Romary
更新时间: 2024-11-05
摘要: In aquatic ecosystems, dissolved organic carbon (DOC) plays a significant role in the global carbon cycle. Microorganisms mineralize biodegradable DOC, releasing greenhouse gases (carbon dioxide, methane) into the atmosphere. Extensive research has focused on the concentrations and biodegradability of DOC in aquatic systems worldwide. However, little attention has been given to uncertainties regarding the physiological characteristics of heterotrophic bacteria, which are crucial for biogeochemical modeling. In this study, the physiological properties of heterotrophic bacteria and the properties of DOC biodegradability in water are inferred through a Bayesian inversion approach. To achieve this, treated and natural water samples collected from the Seine River basin, were inoculated and incubated in laboratory. During incubation, the concentrations of DOC and heterotrophic bacteria biomass were measured. Then, a multiple Monte Carlo Markov Chains method and the HSB model (High-weight polymers, Substrate, heterotrophic Bacteria) are applied on the water incubation data. The results indicate a higher biodegradable fraction of DOC in natural water compared to treated water and significant variability in the fraction of fast biodegradable DOC within 5 days in both water samples. The significant variability highlights the uncertainties/challenges in the HSB model parameterization. The seven water samples used in the paper serve as a proof of concept. They are from various origins and display the potential of the method to identify parameter values in a large range of values. Because mortality rate of heterotrophic bacteria at 20 ∘C (kd20) showed a remarkable stability at 0.013 h-1, we considered that this parameter can be fixed at this value. The maximum growth rates at 20 ∘C (μmax20) was 0.061 h-1 while optimal growth yield (Y) estimated at 0.34 for treated water and at 0.25 for natural water. All these parameter values are well in accordance with previous determinations.
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