环境•农林最新文献

{"title":"Utilizing Indigenous Microorganisms to Stabilize Humus Soil from a Municipal Solid Waste Landfill with Optimized Microbial Strain Selection","authors":"Yiling Wan,&nbsp;Ping Chen,&nbsp;Yufeng Qiu,&nbsp;Kangqi Zheng,&nbsp;Miaoxin Yuan","doi":"10.1007/s11270-025-07764-y","DOIUrl":"10.1007/s11270-025-07764-y","url":null,"abstract":"<p>A major challenge in utilizing humus soil excavated from municipal solid waste (MSW) landfills for landscaping is stabilizing heavy metals while preserving beneficial soil properties. Microbially induced calcium carbonate precipitation (MICP) technology offers a promising solution for this. In this study, seven indigenous urease producing bacteria were isolated from humus soil and their effectiveness in stabilizing the soil was evaluated. A comparative analysis was conducted between <i>Bacillus pasteurii</i> (BA) and the seven indigenous strains. All strains thrived and effectively performed MICP in the humus soil leachate environment, contributing to solidification/stabilization. Some strains outperformed BA in specific parameters. Among them, <i>Brucella oryzae</i> (Q2-9) exhibited the best performance, with urease activity reaching 52.38 mmol/L, bacterial concentration (OD₆₀₀) reaching 2.446, and optimal solidification/stabilization effects on humus soil. Following treatment, the unconfined compressive strength of specimens increased to 2.983 MPa, while average particle size rose to 0.91 mm. The heavy metal fixation rates for Cr, Pb, Cu, Zn, Cd, Ni and Mn were 85.03%, 99.50%, 63.24%, 80.75%, 93.92%, 77.23% and 71.21% respectively, with leaching concentrations all meeting Class IV of the Standard for groundwater quality (GB/T 14848–2017). Consequently, Q2-9 is a preferred strain for MICP-based stabilization of humus soil. This strain has been deposited at the China Center for Type Culture Collection under the accession number CCTCC M 2021810 Q2-9.</p>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109465","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}

{"title":"Developmental basis of natural tooth shape variation in cichlid fishes","authors":"Ryan F. Bloomquist","doi":"10.1007/s00114-025-01964-6","DOIUrl":"10.1007/s00114-025-01964-6","url":null,"abstract":"<div><p>While most dentate non-mammalian vertebrates possess simple conical teeth, some demonstrate complex tooth shapes. Lake Malawi cichlid fishes are an extreme example of this, exhibiting a myriad of tooth shapes driven by an ecologically derived rapid evolution of closely related but distinct species. Tooth shape in mammals is generally considered to be established by signaling centers called primary and secondary enamel knots, which are not believed to be present in non-mammalian vertebrates. In this study, signaling centers of gene expression with epithelial folding with similar molecular patterns to that of mammalian enamel knots are identified, and differences of asymmetric gene expression are identified between fish that possess species specific polymorphisms of either bicuspid or tricuspid teeth. Gene expression is then manipulated indirectly using a small molecule inhibitor of the Notch pathway, resulting in phenotypical aberrations of tooth shape and patterning, including a mimic of a tricuspid tooth in a fish with a naturally occurring bicuspid dentition. This study provides insight into the evolutionary origins of tooth shape and advances our knowledge of the molecular determinants of dental morphology with translational utility in regenerative dentistry.</p></div>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":"112 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11772509/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Monsoon Flood on Spatial Distribution of Trace Metals in Surface Sediments of Cauvery River in Tamil Nadu, India","authors":"Prabhu Kolandhasamy,&nbsp;Emmanuel Charles Partheeban,&nbsp;Anandkumar Arumugam,&nbsp;Tewodros Rango Godebo,&nbsp;Rajaram Rajendran","doi":"10.1007/s11270-025-07771-z","DOIUrl":"10.1007/s11270-025-07771-z","url":null,"abstract":"<div><p>The current study investigated the distribution and health risk assessment of heavy metals present in the sediment samples Cauvery River. During the monsoon season, the sediment samples were collected at 13 sampling sites along the Cauvery River. The findings of the present study revealed elevated concentrations of metals, including Cr, Zn, Cu, Co, Pb, As, Cd, and Hg. A robust statistical relationship was identified among the sampling locations of all the elements under analysis (<i>P</i> &lt; 0.05). Moreover, investigations into the pollution load index and geo-accumulation index revealed that the distribution of heavy metals during the monsoon flood had moderate to higher effects. However, it can be observed from the average values of PER (720) and PLI (&gt; 1) that the sediments of the Cauvery River possess a considerably high level of toxicity. Based on the results, the sediment samples from the Cauvery River basin exhibited significant levels of Cd and Hg, whereas other metals were comparatively less severe.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109290","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}

{"title":"Tailoring Nanomaterials towards Global One Health: A Promising Nano-strategy against Antibiotic Resistance","authors":"Feiran Chen, Shuhan Zhang, Xi Wang, Zhenyu Wang","doi":"10.1039/d4en00854e","DOIUrl":"https://doi.org/10.1039/d4en00854e","url":null,"abstract":"The management of antibiotic resistance gene (ARG) contamination in the soil-plant system is a critical area of research with significant implications for public health and environmental sustainability. Recently, engineered nanomaterials (ENMs) have been developed to enhance plant growth and address the global food crisis. Studies on the effects of nanomaterials mostly indicate an increase in the spread of antibiotic resistance, while emerging findings reveal the potential of ENMs in mitigating ARG pollution. Unlike existing mechanisms such as adsorption, DNA damage, and microbial disinfection involved in ARG removal, ENMs are specifically modified (e.g., with particular chemical compositions or surface charge adjustment) to inhibit the transfer of ARGs and migration of antibiotic-resistant bacteria. The integration of ENMs with advanced technologies (e.g., CRISPR gene editing) holds great promise for remediating antibiotic resistance in soil-plant systems. Here, we provide an overview of ENM-ARG interactions and propose applications of tailored ENMs to inhibit ARG dissemination during the development of nano-enabled agriculture, addressing major challenges and directions for optimizing efficacy and safety of ENMs-based strategies for mitigating ARG contamination in agriculture.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"35 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031249","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}

{"title":"Efficient Removal of Cr(VI) by Bamboo-Derived Biochar Supported Nano Zero-Valent Iron: Insights into Performance and Mechanism","authors":"Yiqun Xu,&nbsp;Jiaming Guo,&nbsp;Siqi Wen,&nbsp;Xiaoyu Shi,&nbsp;Yunlong Zhu,&nbsp;Jianbing Lu,&nbsp;Yang Gao,&nbsp;Mingjuan Zhang,&nbsp;Wenjing Xue","doi":"10.1007/s11270-025-07754-0","DOIUrl":"10.1007/s11270-025-07754-0","url":null,"abstract":"<p>The environment and human health are seriously threatened by the highly hazardous and continuously accumulating pollutant known as hexavalent chromium [Cr(VI)]. Therefore, research on more affordable and ecologically friendly remediation agents is desperately needed. This study employed bamboo as a carbon source to produce nZVI-loaded BC materials (nZVI@BC), which would be then used to mimic the remediation of wastewater contaminated with Cr(VI). The morphological structure, chemical composition, functional group, and electron transfer characteristics of the materials were analyzed using SEM, TEM, EDS, Mapping, FTIR, XRD, XPS, and Tafel. The outcomes demonstrated that nZVI was successfully loaded onto BC, which reduced nZVI agglomeration and oxidation, and improved its reactivity and electron transfer rate. The optimal synthesis conditions for nZVI@BC were determined to be a BC pyrolysis temperature of 700 °C and a Fe/C mass ratio of 1:1. The nZVI@BC achieved a removal of 99.80% for Cr(VI), representing a 46.31% improvement compared to nZVI alone. The pseudo-second-order and Langmuir models were more consistent with the adsorption of material. The thermodynamic analysis revealed that the elimination of Cr(VI) was a spontaneous endothermic reaction. The potential removal techniques employed by nZVI@BC include adsorption, reduction, and co-precipitation. Overall, these findings suggest that the synthesized nZVI@BC material shows great potential for effectively treating Cr(VI) in contaminated water.</p>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109330","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}

{"title":"Reactive Red 120 Dye Removal from Water Systems Using Natural Minerals: Batch Adsorption Approach","authors":"Joanna Fronczyk,&nbsp;Krzysztof Kuśmierek,&nbsp;Andrzej Świątkowski","doi":"10.1007/s11270-025-07776-8","DOIUrl":"10.1007/s11270-025-07776-8","url":null,"abstract":"<div><p>The study investigated the adsorption capacity of natural minerals such as limestone sand (LS), silica spongolite (SS), chalcedonite (CH), and dolomite (DO) for the removal of a model contaminant, the azo dye Reactive Red 120 (RR-120). The effects of adsorbent dose and solution pH on adsorption, as well as the adsorption kinetics and equilibrium adsorption, were investigated. The results showed that adsorption was dependent on the mass of the adsorbent and increased with increasing adsorbent dose. Adsorption was also dependent on the pH of the initial solution and was most efficient in an acidic media. Adsorption kinetic research results revealed that the adsorption of RR-120 on all four minerals followed the pseudo-second-order model and was controlled by film diffusion. The dye adsorbed fastest on limestone sand (<i>k</i>₂ = 0.021 g/µmol∙min) and slowest on dolomite (<i>k</i>₂ = 0.015 g/µmol∙min). The observed adsorption rate increases in the order of DO &lt; CH &lt; SS &lt; LS. Under equilibrium conditions, Reactive Red 120 was adsorbed best on dolomite and least on limestone sand (LS &lt; SS &lt; CH &lt; DO). The Langmuir adsorption capacities for RR-120 were found to be 4.7 μmol/g for LS, 5.2 μmol/g for SS, 7.0 μmol/g for CH, and 9.0 μmol/g for DO. The results indicate that selected natural minerals can be employed as alternatives to commercial adsorbents for the removal of Reactive Red 120 from water.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109741","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}

{"title":"Chemometric Assessment of Anthropogenically Impacted Ancient Artificial Wetland, Bhojtal, India, for its Drinking Water Suitability and Hydrogeochemical Classification","authors":"Rakesh Kumar,&nbsp;Md Basit Raza,&nbsp;Sangeeta Lenka,&nbsp;Simanku Borah,&nbsp;Anil Kumar Yadav,&nbsp;Dinesh Kumar Yadav,&nbsp;Roomesh K. Jena,&nbsp;Dhruba Jyoti Sarkar,&nbsp;Dharmendra Singh,&nbsp;Narendra Kumar Lenka,&nbsp;Rameshwar S. Kanwar,&nbsp;Sullip Kumar Majhi,&nbsp;Basanta Kumar Das","doi":"10.1007/s11270-025-07748-y","DOIUrl":"10.1007/s11270-025-07748-y","url":null,"abstract":"<div><p>This study assessed spatiotemporal water quality, hydrogeochemical characteristics, and heavy metal contamination level of anthropogenically impacted an ancient artificial freshwater wetland, Bhojtal, India, which is crucial for drinking water supply and aquatic biodiversity. The study revealed significant (<i>p</i> &lt; 0.05) seasonal variations in pH, magnesium, and dissolved oxygen levels exceeding permissible limits. Hydrogeochemical classification indicated Cl^‒-Ca²⁺/Mg²⁺ facies dominance post-monsoon. Entropy-based WQI results showed excellent water quality during the monsoon, which declined to good (67% samples) and medium (33% samples) post-monsoon. The trophic state index (TSI) indicated hyper-eutrophication, with values of 81.81 and 82.61. Heavy metals were within safe limits during the monsoon, but high cadmium and lead concentrations were found post-monsoon in the western (Karballa) and southeastern sides (Hallalpur) of the Bhojtal wetland. The study emphasizes the need for land use management to protect water quality, especially post-monsoon. The study signifies the anthropogenic impact on historically significant artificial freshwater wetlands regarding water quality, hydrogeochemistry, and heavy metal pollution, emphasizing the crucial role of effective land use management to sustain these freshwater wetlands for better human health and livelihood.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109740","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}

{"title":"Synthesis of Zeolite A–X from Coal Fly Ash via Ultrasonic-Alkali Fusion Hydrothermal Method for the Efficient Removal of Cr (VI) From Wastewater","authors":"Xiaohui Xu,&nbsp;Kaige Chen,&nbsp;Yong Dai,&nbsp;Xiaoping Xing,&nbsp;Lin Sun","doi":"10.1007/s11270-025-07774-w","DOIUrl":"10.1007/s11270-025-07774-w","url":null,"abstract":"<div><p>Water pollution is a growing concern, particularly hexavalent chromium, a toxic pollutant that poses serious environmental and health risks due to its persistence and bioaccumulation. In this study, zeolite A–X was synthesized using an ultrasonic-alkali fusion hydrothermal method, with coal fly ash serving as the source of silica and aluminum, to treat chromium-containing wastewater. The zeolite A–X was successfully synthesized at an alkali-to-ash ratio of 1.5, a hydrothermal temperature of 90 °C, and a hydrothermal time of 12 h. Batch adsorption experiments showed that zeolite A–X achieved optimal adsorption of Cr (VI) at 13.73 mg g⁻¹ under a pH of 3.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109329","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}

{"title":"Exploration of Sludge Lysis by Ultravi-sonication: Effects of Wavelength and Power of UV, and Sludge Concentration and Alkali Treatment","authors":"Tianrun Bai,&nbsp;Xue Song,&nbsp;Zhaorui Li,&nbsp;Guihua Yan,&nbsp;Jie Zhang,&nbsp;Yongde Liu,&nbsp;Fanbao Deng,&nbsp;Liwen Zhang","doi":"10.1007/s11270-025-07750-4","DOIUrl":"10.1007/s11270-025-07750-4","url":null,"abstract":"<div><p>Due to the problems of high difficulty and cost of sludge treatment and disposal, the residual sludge with high water content was treated by lysis to realize the reduction. The sludge lysis was conducted by ultravio-sonication (UVS). The effects of wavelength and power of ultraviolet (UV), and sludge concentration and alkali treatment were investigated. The results found that the power of the UV impacted the sludge lysis degree (DD_COD) more strongly than the wavelength, which could increase the amount of TP, PO₄³⁻-P, TN, NH₄⁺-N, protein and polysaccharides in the supernatant but reduce the percentage of carbon, nitrogen and phosphorus. During the lysis by UV-ultrasound, DD_COD increased slightly as the sludge concentration increased, and alkali treatment was more conducive to the dissolution of substances. Under the conditions of ultrasonic power 400 W and frequency 40 kHz, UV power 16 W and wavelength 185 nm, sludge concentration 12,000 mg·L⁻¹, pH = 11 (alkali treatment), the contents of TP, PO₄³⁻-P, TN, NH₄⁺-N were 297.1 mg·L⁻¹, 183.9 mg·L⁻¹, 522.3 mg·L⁻¹, and 58.9 mg·L⁻¹, respectively, with DD_COD reaching up to 63.02%. The improvement of sludge lysis degree was conducive to the release of substances and the reduction the moisture content, which facilitated the subsequent sludge disposal and resource utilization.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 2","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109331","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}

{"title":"Phenotypic profiling reveals polystyrene nanoplastics elicit sublethal and lethal effects on cellular morphology in rainbow trout gill epithelial cells","authors":"Lissett Guadalupe Diaz, Rebecca Klaper","doi":"10.1039/d4en01149j","DOIUrl":"https://doi.org/10.1039/d4en01149j","url":null,"abstract":"Extensive knowledge is available on the impacts of both engineered nanomaterials (ENMs) and microplastics, yet there remains a critical gap in understanding the impacts of nanoplastics at the cellular and subcellular effects at sublethal concentrations. This study investigates the impacts of PS NPs on Oncorhynchus mykiss (rainbow trout) gill epithelial cells, emphasizing the crucial role of surface charge in nano-bio interactions. The current study employs both traditional and non-traditional toxicological techniques presenting an image-based study to examine PS NP-cellular interactions at sublethal doses. Our findings demonstrated that relative to the uncharged and negatively charged PS NPs, the positively charged PS NPs significantly decreased cell viability at 4 μg mL<small>^-1</small> (EC50: 4.31 μg mL<small>^-1</small>). However, at the sublethal concentration of 2 μg mL<small>^-1,</small> phenotypic profiling analysis indicates that positively charged PS NPs elicit a significant change to cellular morphology and suggests key interactions with subcellular components. As the impacts measured are novel, further research into the underlying mechanisms will contribute to our understanding of nanoparticle toxicity in vertebrate species guiding both the policy and sustainable design of nanoparticles.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"113 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031250","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}