环境科学与生态学最新文献_第2页

Evaluation of fenton-like oxidation coupled with struvite precipitation for the enhanced treatment of Cu-contaminated ammoniacal nitrogen-rich wastewater

IF 8 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-04-03 DOI: 10.1016/j.jenvman.2025.125204

Maharaja P, Patchai Murugan K, Karthiyayini C, Sri Bala Kameswari K, Sudha D, Sabarishwaran G, Sekaran G

{"title":"Evaluation of fenton-like oxidation coupled with struvite precipitation for the enhanced treatment of Cu-contaminated ammoniacal nitrogen-rich wastewater","authors":"Maharaja P, Patchai Murugan K, Karthiyayini C, Sri Bala Kameswari K, Sudha D, Sabarishwaran G, Sekaran G","doi":"10.1016/j.jenvman.2025.125204","DOIUrl":"10.1016/j.jenvman.2025.125204","url":null,"abstract":"<div><div>Discharging highly concentrated ammonia-containing wastewater directly to the environment causes significant environmental degradation. This work has enlightened the recovery of ammoniacal nitrogen from copper-containing Nitrogen-rich wastewater (Cu-NWW) through struvite precipitation followed by a Fenton-like copper oxidation process (CFO). Initially, Cu-NWW was treated through the CFO process by adding 10 mM of H<sub>2</sub>O<sub>2</sub> (30 % <em>w/v</em>) and Nanoporous Activated Carbon (NAC) as a heterogeneous catalyst at an optimized reaction time of 120 min. CFO process exhibited the removal of Chemical Oxygen Demand (COD), 82 %; Biochemical Oxygen Demand (BOD<sub>5</sub>), 73 %; and Total Organic Carbon (TOC), 78 % in Cu-NWW. It also noted that the elimination of COD and TOC by the CFO process increases the purity of struvite crystal. The presence of copper was removed before struvite precipitation by adding 10 % Na<sub>2</sub>S solution. Further, the stoichiometric molar ratio of Mg<sup>2+</sup>, NH<sub>4</sub><sup>+</sup>, and PO<sub>4</sub><sup>3−</sup> ions was optimized for struvite precipitation. The struvite precipitation was then carried out with and without removing Cu ions in Cu-NWW, and the reaction time, the addition of magnesium oxide (MgO), Spent phosphoric acid (SPA), and reaction pH were optimized. The second-order rate reaction follows the rate of the formation of struvite. The integrated CFO process and struvite precipitation achieved 92 % COD removal, 97 % ammoniacal nitrogen removal, and over 99 % Cu removal. This treatment approach is highly suitable for industries generating waste streams containing a combination of COD, ammoniacal nitrogen, and metal ions.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"381 ","pages":"Article 125204"},"PeriodicalIF":8.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759345","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 variability of lacustrine groundwater discharge and pollutant fluxes in the sandy-land lake group basins: Influence from land use types

IF 8 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-04-03 DOI: 10.1016/j.jenvman.2025.125224

Shen Qu , Xiangwei Li , Ao Gao , Yuanzhen Zhao , Keyi Zhang , Yiwei Zhang , Dongchao Huo , Bowen Ye , Zongbao Yue , Renpu Wang , Hongli Ma , Ping Miao , Ruihong Yu

{"title":"Spatial variability of lacustrine groundwater discharge and pollutant fluxes in the sandy-land lake group basins: Influence from land use types","authors":"Shen Qu , Xiangwei Li , Ao Gao , Yuanzhen Zhao , Keyi Zhang , Yiwei Zhang , Dongchao Huo , Bowen Ye , Zongbao Yue , Renpu Wang , Hongli Ma , Ping Miao , Ruihong Yu","doi":"10.1016/j.jenvman.2025.125224","DOIUrl":"10.1016/j.jenvman.2025.125224","url":null,"abstract":"<div><div>Deciphering lacustrine groundwater discharge (LGD) processes and pollutant fluxes in sandy-land lake basins remain difficult due to the complex hydrogeological conditions and land use types. In this study, the spatial variability of LGD in a sandy-land lake group (Bahannao Lake Group Basin) was quantitatively estimated using the radon (<sup>222</sup>Rn) mass balance model. The 5 lakes in the study area, with their various land use and hydrogeological conditions, were categorized into 3 ranges based on LGD rates: <20.0 mm/d (Shenhaizi Lake: 10.81 mm/d), 20.0–35.0 mm/d (Wulannao Lake: 27.21 mm/d, Bahannao Lake: 30.21 mm/d) and >35.0 mm/d (Guangmingnao Lake: 36.78 mm/d, Manaihu Lake: 43.58 mm/d). From an entropy weighted quality index and hydrochemical analysis, NO<sub>3</sub><sup>−</sup>, TN, TDS, Cl<sup>−</sup> and Na<sup>+</sup> from evaporite dissolution and human inputs were the dominant pollutants in the study area. On this basis, the patterns of pollutant fluxes were consistent with LGD rates in the 5 lakes. It was found that the spatial variability of LGD processes in sandy-land lake group basins was controlled mainly by evaporation loss, land use patterns, and industrial and agricultural activities. This study provides new insights into the spatial variability of LGD for global sandy-land lakes in a changing environment.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"381 ","pages":"Article 125224"},"PeriodicalIF":8.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759348","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

Qualitative and quantitative assessment of Sargassum valorisation solutions for the Caribbean

IF 8 2区环境科学与生态学

Journal of Environmental Management Pub Date : 2025-04-03 DOI: 10.1016/j.jenvman.2025.124954

M. Bennett , A. March , H. Li , P. Lallemand , J.-P. Maréchal , P. Failler

{"title":"Qualitative and quantitative assessment of Sargassum valorisation solutions for the Caribbean","authors":"M. Bennett , A. March , H. Li , P. Lallemand , J.-P. Maréchal , P. Failler","doi":"10.1016/j.jenvman.2025.124954","DOIUrl":"10.1016/j.jenvman.2025.124954","url":null,"abstract":"<div><div>The valorisation of Sargassum biomass into various products is seen as a promising solution to mitigate the environmental and economic disruptions caused by massive Sargassum inundations in the Caribbean region. Different applications of Sargassum valorisation have previously been explored but economic assessments of these solutions are absent from publicly available literature which has hindered informed investment support decisions aimed at addressing the biomass influx. A semi-qualitative stakeholder-engagement approach was used to assess 12 Sargassum value chains, with the aim to identify valorisation solutions favourable for investment support and provide indicative costs of implementation. Value chains included biochar; biogas; biofuel; construction materials; liquid bioplastic; powdered bioplastic; flake fertiliser and compost; liquid fertiliser; powdered fertiliser; biotechnological chemical derivation; Sargassum for consumption; and Traditional Chinese Medicine (TCM). The assessment included qualitative comparison according to indicators for an effective solution regarding Sargassum resource dynamics and the Caribbean development context. Quantitative assessment involved model development to compute internal rate of return (IRR), net present value (NPV), and payback period for each solution. Simple value chains were developed as the basis for comparison, and data from previous research and current market prices were used. Biochar, biogas, and compost and fertiliser value chains were recommended for investment support due to favourable model indicators (positive IRR and NPV, low payback period), low-startup investment requirements, scalability potential, low technological processing and skills requirements, value addition potential, adaptability to varied quality of Sargassum biomass and supply challenges, and capacity to consume large amounts of biomass for addressing mass inundations.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"381 ","pages":"Article 124954"},"PeriodicalIF":8.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of thiourea activation on physicochemical and catalytic properties of biochars and hydrochars from sugarcane bagasse: Application to metal recovery from wastes

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2025-04-03 DOI: 10.1016/j.wasman.2025.114773

G. Gascó , S.P Barragán-Mantilla , J. Paz-Ferreiro , A. Méndez

{"title":"The effect of thiourea activation on physicochemical and catalytic properties of biochars and hydrochars from sugarcane bagasse: Application to metal recovery from wastes","authors":"G. Gascó , S.P Barragán-Mantilla , J. Paz-Ferreiro , A. Méndez","doi":"10.1016/j.wasman.2025.114773","DOIUrl":"10.1016/j.wasman.2025.114773","url":null,"abstract":"<div><div>Two biochars were prepared from pyrolysis of sugarcane bagasse (SC) at 550 and 750 °C for 3 h and named as BC550 and BC750, respectively. One hydrochar was prepared from Hydrothermal Carbonization (HTC) of SC solution at 200 °C for 2 h (HC200). Chars (BC550, BC750 and HC200) were mixed with thiourea (10 % in weight) and heated at 350 °C for 1 h leading to BC550-TU, BC750-TU, and HC200-TU, respectively. Pristine and thiourea-activated biochars were characterized by FTIR, N<sub>2</sub> isotherms, XRD, XRF and ultimate analysis. Thiourea activation increased the H/C of biochar, indicating that the presence of N and S and their reaction with carbon structures of biochar hinders the formation of aromatic carbon. Thiourea activation increased the surface area of biochar prepared at 550 °C, while decreasing the surface area of biochar prepared at 750 °C or hydrochar. Finally, both pristine and activated biochars were used as catalysts in the oxidation of sulfide minerals for metal recovery. The addition of thiourea-activated biochars significantly enhanced the extraction of Cu and Zn from mining waste, from 47.4 % of Cu and 88.1 % of Zn to values of 99.4–100 %, while reducing As extraction. However, in leaching processes involving minerals with higher Cu and Zn content, the extraction percentages did not reach such high values (<50 % for Cu and < 90 % for Zn). It can be concluded that the use of thiourea-activated biochars enable the development of low cost and sustainable processes for the recovery of metals from wastes.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"200 ","pages":"Article 114773"},"PeriodicalIF":7.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760172","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

Prospects and challenges of thermal hydrolysis pretreatment of microalgae for enhancing bioenergy and resource recovery in anaerobic bioprocesses

IF 8.1 2区环境科学与生态学

Chemosphere Pub Date : 2025-04-03 DOI: 10.1016/j.chemosphere.2025.144367

Parisa Niknejad , Seyed Mohammad Mirsoleimani Azizi , Sherif Ismail , Wafa Dastyar , Abduallh Al-Mamun , Rajender Gupta , Bipro Ranjan Dhar

{"title":"Prospects and challenges of thermal hydrolysis pretreatment of microalgae for enhancing bioenergy and resource recovery in anaerobic bioprocesses","authors":"Parisa Niknejad , Seyed Mohammad Mirsoleimani Azizi , Sherif Ismail , Wafa Dastyar , Abduallh Al-Mamun , Rajender Gupta , Bipro Ranjan Dhar","doi":"10.1016/j.chemosphere.2025.144367","DOIUrl":"10.1016/j.chemosphere.2025.144367","url":null,"abstract":"<div><div>Microalgae have emerged as a promising feedstock for bioenergy production through anaerobic digestion and fermentation, gaining significant attention due to their rapid growth rate, ability to adapt to diverse environments, and rich biochemical composition. However, the recalcitrant nature of the microalgal cell wall necessitates pretreatment to enhance the accessibility of intracellular components and improve overall bioenergy yields from anaerobic digestion/fermentation. Among the various pretreatment methods, the thermal hydrolysis process has proven to be a promising strategy for enhancing the efficiency of bioenergy recovery from microalgal biomass. The benefits of thermal hydrolysis pretreatment of microalgae include improved organic matter solubilization, enhanced digestibility, and increased product yields in subsequent anaerobic digestion/fermentation processes for biomethane, biohydrogen, and volatile fatty acids production. However, thermal pretreatment poses challenges, such as forming future research by-products like furfural and ammonia, which can adversely affect microbial activities and reduce process efficiency. Thus, addressing its associated challenges is critical for maximizing its effectiveness in bioenergy and resource recovery. This review provides a comprehensive analysis of these challenges and offers recommendations for future research, emphasizing the need for optimized pretreatment strategies for advancing the sustainable and efficient use of microalgae in bioenergy production.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"377 ","pages":"Article 144367"},"PeriodicalIF":8.1,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variations in seafood consumption and health risk associated with trace element exposure in the Zhoushan Fishing Ground, China: A questionnaire-based study

IF 5.3 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2025-04-03 DOI: 10.1016/j.marpolbul.2025.117900

Jiaqi Jiang , Xianya Lu , Yang Luo , Dehui Chen , Xiang Chen , You Li , Zhe Hao

{"title":"Variations in seafood consumption and health risk associated with trace element exposure in the Zhoushan Fishing Ground, China: A questionnaire-based study","authors":"Jiaqi Jiang , Xianya Lu , Yang Luo , Dehui Chen , Xiang Chen , You Li , Zhe Hao","doi":"10.1016/j.marpolbul.2025.117900","DOIUrl":"10.1016/j.marpolbul.2025.117900","url":null,"abstract":"<div><div>This study determined the concentrations and health risks of trace elements (Cu, Pb, Zn, Cd, Cr, Hg, and As) in 184 samples of 13 seafood species (8 fish, 2 shrimp, and 3 crab) collected from Zhoushan Fishing Ground (ZFG), during October and December 2020, and April and June 2021. To address the limitations of evaluating risk using regional average consumption, 399 questionnaires (359 valid) were collected to analyze how residents' consumption patterns influenced individual health risk. For all the samples, exceedances of national safety limits were observed for Pb (1.09 %), Cd (5.43 %), and As (21.20 %), and crabs exhibited the highest trace element concentrations. Species and body size further played a role in determining the concentrations. Seafood consumption frequency was the strongest predictor of consumption rates (IR), following the pattern IR<sub>fish</sub> > IR<sub>shrimp</sub> > IR<sub>crab</sub>. In addition, age, gender, and residence duration influenced IR<sub>fish</sub> and IR<sub>shrimp</sub>. While the risk of most trace elements was acceptable, average Target Hazard Quotient (THQ) values of As exceeded 1, and both Cd and As exceeded the carcinogenic risk threshold of 10<sup>−4</sup>. The findings suggested that As and Cd posed certain health risks, especially in crabs (with the highest concentrations) and fish (with the highest IR). These results highlighted that differences in both element concentrations and individual consumption together affected the health risks associated with seafood. Future efforts should focus on enhancing the detection of trace elements, especially Cd and As, and promoting balanced seafood consumption to protect public health.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"215 ","pages":"Article 117900"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effects of temperature and salinity on CO2 fluxes dynamics and respiration metabolism in the sea cucumber Apostichopus japonicus (Selenka)

IF 5.3 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2025-04-03 DOI: 10.1016/j.marpolbul.2025.117928

Yaoping Mei , Yuling Xu , Qinfeng Gao , Zhao Li , Shuanglin Dong

{"title":"Effects of temperature and salinity on CO2 fluxes dynamics and respiration metabolism in the sea cucumber Apostichopus japonicus (Selenka)","authors":"Yaoping Mei , Yuling Xu , Qinfeng Gao , Zhao Li , Shuanglin Dong","doi":"10.1016/j.marpolbul.2025.117928","DOIUrl":"10.1016/j.marpolbul.2025.117928","url":null,"abstract":"<div><div>Global warming has led to higher temperatures and extreme precipitation events, significantly affecting the physiological status of sea cucumbers and causing substantial economic losses in the aquaculture industry. This study explored the effects of high temperature (HT), low salinity (LS), and their combination (TS) on CO<sub>2</sub> fluxes at the water-air interface, energy allocation, and the expression of respiratory metabolism-related genes in sea cucumbers. The results showed that HT and/or LS treatments reduced growth performance by 8.37–21.64 % and increased respiratory metabolic carbon content by 17.85–57.68 %. Respiratory metabolizable energy increased by 22.59 % (HT) and 25.87 % (TS). Enzyme activities and gene expression of pyruvate dehydrogenase (PDH), pyruvate kinase (PK), and hexokinase (HK) in respiratory tree were significantly higher than in body wall in response to high temperature stress. Conversely, activities and gene expression of α-ketoglutarate dehydrogenase (OGDH), lactate dehydrogenase (LDH), and malate dehydrogenase (MDH) were significantly higher in body wall in response to low salinity stress. These results indicate that the respiratory tree is more responsive to high temperature, while low salinity primarily affects the body wall. CO₂ fluxes positively correlated with respiratory metabolizable energy, respiratory metabolic carbon content, and LDH activities (R > 0.51, <em>p</em> < 0.05), but negatively correlated with OGDH activity and specific growth rate (R > 0.50, <em>p</em> < 0.05). The respiratory tree's specific functions resulted in higher CO<sub>2</sub> fluxes in HT group compared to LS group. Furthermore, the combined stress resulted in highest CO<sub>2</sub> fluxes, suggesting an additive effect on the physiological metabolism of sea cucumber. This study provides insights into the adaptation mechanisms of aquatic animals to environmental stresses.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"215 ","pages":"Article 117928"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Arsenic and zinc cycling in Cambodian rice fields of the Tonle Sap floodplain

IF 8.2 1区环境科学与生态学

Science of the Total Environment Pub Date : 2025-04-03 DOI: 10.1016/j.scitotenv.2025.179261

Yasmine A. Farhat , E-Nieng Muth , Chou Cheythyrith , Lyda Hok , Gordon W. Holtgrieve , Soo-Hyung Kim , Rebecca B. Neumann

{"title":"Arsenic and zinc cycling in Cambodian rice fields of the Tonle Sap floodplain","authors":"Yasmine A. Farhat , E-Nieng Muth , Chou Cheythyrith , Lyda Hok , Gordon W. Holtgrieve , Soo-Hyung Kim , Rebecca B. Neumann","doi":"10.1016/j.scitotenv.2025.179261","DOIUrl":"10.1016/j.scitotenv.2025.179261","url":null,"abstract":"<div><div>Cambodians heavily rely on rice as an essential staple food crop and source of income. The Tonle Sap floodplain is one of Cambodia's largest rice-producing regions. Natural flooding and irrigation on paddies within the floodplain likely influence the cycling of important trace elements such as zinc (Zn), an essential and often limiting micronutrient, and arsenic (As), a toxin for both humans and plants. We explored temporal and chemical factors that govern As and Zn deposition, availability, and uptake in Tonle Sap rice fields in the context of changing flooding dynamics. To this end, we collected surface soils, flood sediment, and plants across four cropping cycles in Steung Saen Municipality of Kampong Thom Province. We found that sediments deposited during the flood season acted as a source of labile As, Zn, and iron (oxy)hydroxide minerals that carry both As and Zn. However, it was not until soils dried between the two seasons that actual Zn uptake into plants increased. No such relationship was observed for As. Soil bioavailable Zn (i.e., DTPA-Zn) strongly predicted the transfer of Zn from soil to leaves and grains. Leaf concentrations of Zn and As were associated with less efficient translocation from vegetative tissue to grain, as measured by their respective grain/leaf concentration ratios. We also observed signs of differential uptake pathways for Zn into grain in response to seasonal differences in Zn availability. Lastly, our findings suggest that Zn may be involved in the in-plant translocation of As, presenting an important trade-off in breeding high-Zn and low-As rice varieties. Our work shows the interconnected nature of hydrologic cycles, agriculture, and food/nutritional security in the Tonle Sap Floodplain as it relates to trace elements. These findings can help to predict and manage changing Zn and As dynamics in this important and vulnerable region.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"975 ","pages":"Article 179261"},"PeriodicalIF":8.2,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Assessing the animals’ health risk arising from Cd, Pb, Ni, and Zn content in fodder corn grown in a farm treated with municipal solid waste compost—Case study: Iran

IF 2.9 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2025-04-03 DOI: 10.1007/s10661-025-13910-0

Mojgan Yeganeh, Seyed Majid Mousavi, Zahra Khanmohammadi, Farhad Moshiri

{"title":"Assessing the animals’ health risk arising from Cd, Pb, Ni, and Zn content in fodder corn grown in a farm treated with municipal solid waste compost—Case study: Iran","authors":"Mojgan Yeganeh, Seyed Majid Mousavi, Zahra Khanmohammadi, Farhad Moshiri","doi":"10.1007/s10661-025-13910-0","DOIUrl":"10.1007/s10661-025-13910-0","url":null,"abstract":"<div><p>The transference of heavy metals from forage to feeding animals is a crucial animal welfare issue. In this article, the effects of using municipal solid waste compost in corn cultivation on animal’s health were assessed. The study was run at the Soil and Water Research Institute of Iran and followed an incomplete strip block design composed of six treatments and three repeats. The treatments were control, with no fertilizer or municipal solid waste compost, multiple combinations of N, P, and K chemical fertilizers, and municipal solid waste compost which were used either once or twice a year. Mature corn plants (Single Cross 704) from the lowest collar were sampled during the end of summer 2019. Corn samples were examined for cadmium, lead, nickel, and zinc concentration. Using the Oracle Crystalball software, health risks were estimated for sheep, dairy cows, beef, broiler, and laying poultry. The highest exposure to cadmium, nickel, and zinc was observed in sheep feeding corn cultivated in T5 treatment, but the highest exposure to lead was observed in sheep fed with corn cultivated in T2 treatment. Cd, Pb, Ni, and Zn exposure and related risk indices were lower than the reported reference values. It can be concluded that the quality of fodder corn grown in the treatments in this study was within the safe range in terms of heavy metal content and did not threaten the health of the investigated animals.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Continental declines in North American small mammal populations

IF 4.9 1区环境科学与生态学

Biological Conservation Pub Date : 2025-04-03 DOI: 10.1016/j.biocon.2025.111109

Alec Medd , Amanda E. Martin , Adam C. Smith , Lenore Fahrig

{"title":"Continental declines in North American small mammal populations","authors":"Alec Medd , Amanda E. Martin , Adam C. Smith , Lenore Fahrig","doi":"10.1016/j.biocon.2025.111109","DOIUrl":"10.1016/j.biocon.2025.111109","url":null,"abstract":"<div><div>We initially speculated that non-tropical North American (USA and Canada) small mammal abundances might have increased over the past several decades due to declines in mammalian predators. To test this idea we assembled from small mammal researchers 818 time series of small mammal abundances, containing a total of 5317 individual abundance data points, for 66 species in 21 genera. The resulting database is the largest collection of multi-year abundance data for North American small mammals. We then used a hierarchical Bayesian modelling approach to estimate an overall abundance trend. Contrary to our initial speculation, we found strong support for an overall decline in North American small mammal abundance, with an estimated annual decrease of 3.6 %. Sixty species trends were negative while only six were positive. Given this decline and given that small mammals are important for ecosystem function as prey items, as predators, and for seed dispersal, we suggest conservation efforts should be directed to this generally neglected group. In particular, we need further work to uncover the causes and consequences of small mammal declines, and to develop mitigation strategies to avoid further declines in North American small mammals.</div></div>","PeriodicalId":55375,"journal":{"name":"Biological Conservation","volume":"306 ","pages":"Article 111109"},"PeriodicalIF":4.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0