Water, Air, & Soil Pollution最新文献

{"title":"Quantitative Analysis of Alkylphenols In Environmental Samples With Metagenomic Impact Assessments","authors":"Ajay Kumar,&nbsp;Ashwini Kumar,&nbsp;Ashok Kumar Malik,&nbsp;Avneesh Kumar,&nbsp;Vajinder Kumar,&nbsp;Baljinder Singh","doi":"10.1007/s11270-025-08145-1","DOIUrl":"10.1007/s11270-025-08145-1","url":null,"abstract":"<div><p>A simple and accurate quantitative method was used for four endocrine disruptors: 4-tert butyl phenol (4-TBP), 4-tert amyl phenol (4-TAP), 4-cumyl phenol (4-CP), and 3-tert butyl phenol (3-TBP) using solid-phase microextraction (SPME) coupled with high-performance liquid chromatography (HPLC) and ultraviolet (UV) detection in river water, domestic water, domestic wastewater, sludge, and soil samples. Carbowax templated resin (50 µm) fiber was employed to extract the analytes from aqueous samples. The limits of detection (LOD) for 4-TBP, 4-TAP, 4-CP, and 3-TBP were 1.33, 0.78, 0.89, and 0.17 ng/mL, respectively. To assess the alkylphenol content introduced into water from domestic use (household activities of Patiala city), concentrations were measured in both household water and wastewater generated from domestic activities in Patiala, India. To assess the alkylphenol content introduced into water from domestic activities in Patiala, Punjab, India, concentrations were measured in both the tube-well water supplied to households and the domestic wastewater generated from these activities. Additionally, metagenomic analysis using 16S rRNA gene sequencing was conducted on soil samples and domestic wastewater sludge to evaluate the impact of alkylphenols on the microbial community. The 16S rRNA gene sequencing analysis revealed a rich microbial community, with 20 phyla detected. Despite this diversity, only seven phyla accounted for more than 90% of the total bacterial population in each sample, with Proteobacteria being the most prevalent phylum across both sample types.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140230","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":"Bioenergy Potential of Crop Residues: A Proximate and Mineral Composition Assessment","authors":"Amir Detho,&nbsp;Asif Ali Memon,&nbsp;Nejib Ghazouani,&nbsp;Abdelkader Mabrouk,&nbsp;Ahmed Babeker Elhag,&nbsp;Aeslina Abdul Kadir,&nbsp;Mohd Arif Rosli","doi":"10.1007/s11270-025-08161-1","DOIUrl":"10.1007/s11270-025-08161-1","url":null,"abstract":"<div><p>This study presents an experimental approach to determine the proximate and mineral composition of selected agricultural crop wastes, focusing on sugarcane and banana residues. Representative samples were collected and subjected to proximate analysis to measure key components, including moisture content, volatile matter, fixed carbon, and ash content. To further assess the mineral composition, AAS was utilized to quantify essential elements such as calcium oxide, magnesium oxide, and potassium oxide. The results revealed that banana crop waste had a higher moisture content (8.2%) than sugarcane crop waste (5.95%), whereas sugarcane waste exhibited greater volatile matter (77.99% vs. 63.89%) and fixed carbon (10.89% vs. 10.49%). The ash content of banana crop waste was notably higher at 17.99%, compared to 7.75% for sugarcane waste. Furthermore, the higher heating values (HHV) for sugarcane and banana wastes were recorded at 19.45 MJ/kg and 13.23 MJ/kg, respectively, aligning closely with reported literature values. This study offers key insights into the energy potential and mineral composition of agricultural residues, reinforcing their viability for bioenergy applications and mineral recovery. Future research could explore advanced pretreatment methods to enhance the bioenergy yield and optimize mineral extraction processes for industrial applications. It provides a foundation for optimizing waste-to-energy technologies for developing countries.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140229","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":"Health Risk of Mercury and Cadmium and Their Migrations in a Soil- Maize System of the Karst Mining Area","authors":"Xiuyuan Yang,&nbsp;Wenmin Luo,&nbsp;Zhifei Cheng,&nbsp;Guiting Mou,&nbsp;Xianliang Wu,&nbsp;Huijuan Liu","doi":"10.1007/s11270-025-08168-8","DOIUrl":"10.1007/s11270-025-08168-8","url":null,"abstract":"<div><p>Mining activities have caused serious heavy metal and metalloids contamination in agricultural soils, while the differences in contamination characteristics and ecological impacts of metalloid within soil-crop systems between mining and non-mining areas in karst regions remain poorly understood. Therefore, this study investigated the contents, speciation, and ecological risks of mercury (Hg) and cadmium (Cd), and explored their occurrence characteristics and risk levels in soils and maize from mining and non-mining areas in the karst environment of Guizhou Province, China. Results showed that Cd concentrations in soils from mining areas were significantly higher than those in control areas (<i>p</i> &lt; 0.01), while Hg concentrations showed no significant difference. Medium contamination and ecological risk were identified in 44.44% of mining-area soils, primarily driven by Hg contamination. However, the risk assessment code indicated a higher bioavailability risk for Cd compared to Hg, with 22.22% of soils in the mining area exhibiting medium risk. In maize, the concentrations of Cd and Hg followed the order: roots &gt; leaves &gt; stems &gt; corns. The enrichment and translocation capacities of Cd and Hg in mining-area maize were significantly greater than that of in controls. Hg and Cd speciation in soil significantly influenced their content in maize. Potential carcinogenic health risks from Cd and Hg exposure were found in mining-area maize and control areas, especially in children. Our results suggested that there was a relatively higher potential health risk caused by Cd and Hg in soil and maize, and it was necessary to pay attention to the effect of exposure by the more hazardous substances on the other local crops. Our suggestion is that several measures, including phytoremediation, biochar, advanced nanomaterial technologies, etc., are urgently needed to alleviate the heavy metal and metalloid pollution in soil and some crops according to local environmental conditions. This study provides important insights and basic data to inform strategies for mitigating heavy metal pollution of agricultural soils in karst mining areas.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135306","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":"Assessment of Economic, Social, and Perceptual Impacts of Soil Pollution by Microplastic Particles (MPs) in Romania","authors":"Valeria Pop,&nbsp;Alexandru Ozunu,&nbsp;Elisephane Irankunda","doi":"10.1007/s11270-025-08038-3","DOIUrl":"10.1007/s11270-025-08038-3","url":null,"abstract":"<div><p>Microplastic particles (MPs) pose significant risks to human health and environmental sustainability, particularly in soil ecosystems. However, research on MPs remains limited, especially in Romania, where no specific studies exist on the economic costs, social problems, or environmental effects of soil pollution caused by MPs. To address this gap, we conducted an online survey between May and December 2022, targeting Romanian respondents from urban and rural areas. We aimed to assess three key areas: (Q1) the economic burden of mitigating soil pollution caused by MPs, (Q2) social problems generated by MPs in soil, and (Q3) the probability of being negatively affected by these social issues. Descriptive statistical analysis revealed high perceived costs associated with addressing MPs in soil (mean: 5.17 for Q1), significant concerns regarding social problems (mean: 5.01 for Q2), and a high probability of being affected by these social issues (mean: 4.69 for Q3). Strong positive correlations (Q1-Q2: r = 0.933, <i>p</i> = 0.002; Q1-Q3: r = 0.861, <i>p</i> = 0.013; Q2-Q3: r = 0.971, <i>p</i> &lt; 0.001) highlight the interrelation of economic, social concerns, and adverse effects. The novelty of these findings lies in their focus on Romania, where MPs in soil have not been previously explored, illustrating the incongruence between scientific knowledge, media framing, and public opinion concerning the risks posed by MPs. Findings underscore the urgent need for policy interventions that consider both environmental and social factors in tackling soil pollution by MPs and highlight the importance of raising public awareness to protect future generations.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135307","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":"Advances in Mathematical Modelling, Mathematical Optimization and Simulation in Water Treatment","authors":"Moses Kayanda Kiteto,&nbsp;Cleophas Achisa Mecha,&nbsp;Martha Noro Chollom","doi":"10.1007/s11270-025-08159-9","DOIUrl":"10.1007/s11270-025-08159-9","url":null,"abstract":"<div><p>The ever-growing global need for clean water coupled with rampant pollution by emerging persistent contaminants, necessitates the use of advanced water treatment processes such as adsorption, advanced oxidation processes (AOPs) and membrane separation. These technologies, while effective, are often hindered by their reliance on sophisticated equipment, specialized materials, and complex chemical reactions, resulting in high costs and operational difficulties. Unlike previous studies, which primarily focused on technological aspects of the processes, this study takes a broader approach by analyzing of the entire process, proposing an innovative solution through the application of mathematical modelling, mathematical optimization and simulation techniques to enhance efficiency of water treatment processes. Mathematical modelling employed the Freundlich adsorption isotherm in adsorption, first order reaction kinetics in Advanced Oxidation Processes (AOPs) and Darcy – Hagen – Poiseuille equation, Carman – Kozeny equation, Nernst – Planck equation and solution – diffusion transport equation in microfiltration, ultrafiltration, nanofiltration and reverse osmosis respectively. The Newton’s method, direct differentiation and Simplex method was utilized in the optimization. The subsequent mathematical models and optimization techniques were applied to real world processes and simulated in C – programming language. The simulation results demonstrated optimality for the required adsorbent mass in adsorption, residence time and mass of catalyst in AOPs and effect of feed to pressure ratio on the operating flux in membrane separation processes. The findings of the study illustrate mathematical modelling and optimization and simulation as reliable approaches in the design and effective operation of advanced water treatment processes.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125764","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":"A comparative study of Helianthemum and Citrullus Colocynthis Biomass as Low-Cost Biosorbents for Ce(III) and Gd(III) Removal from Aqueous Solutions","authors":"Ghada M. Almutairi,&nbsp;Reham Ali,&nbsp;Alaa M. Younis","doi":"10.1007/s11270-025-08142-4","DOIUrl":"10.1007/s11270-025-08142-4","url":null,"abstract":"<div><p>This study aimed to investigate the potential of <i>Helianthemum</i> and <i>Citrullus colocynthis</i> biomass as biosorbents for removing Ce(III) and Gd(III) ions. Various experimental parameters, including initial metal ion concentration, adsorbent dosage, and contact time, were examined to assess their impact on removal efficiency. The biosorption process was analyzed using isotherm and kinetics models. Samples underwent pretreatment to eliminate impurities and were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The Langmuir isotherm model exhibited a good fit for Gd(III) adsorption onto <i>Helianthemum</i> biomass, while it was unsuitable for Ce(III) adsorption. The isotherm models were employed to determine the optimal adsorption capacities of the biosorbents. <i>Helianthemum</i> biomass exhibited maximum adsorption capacities of 250 mg/g for Gd(III) and 103.09 mg/g for Ce(III), whereas <i>Citrullus colocynthis</i> biomass demonstrated capacities of 100 mg/g for Gd(III) and 66.62 mg/g for Ce(III). While the Freundlich isotherm model showed moderate agreement for both Gd(III) and Ce(III) adsorption onto <i>Citrullus colocynthis</i> biomass, it was inadequate for <i>Helianthemum</i> biomass. The adsorption of Gd(III) onto <i>Helianthemum</i> biomass was attributed to a chemisorption mechanism, indicating irreversible interactions between the metal ion and the adsorbent. In contrast, the adsorption of Ce(III) involved a physisorption process, allowing for the possibility of reversible desorption. The experimental data exhibited a better fit to the pseudo-first-order model for both Gd(III) and Ce(III) adsorption onto <i>Helianthemum</i> and <i>Citrullus colocynthis</i> biomass. The equilibrium adsorption capacities (qe) predicted by the model for <i>Helianthemum</i> biomass containing Gd(III) and Ce(III) were relatively similar to the experimental values. The regeneration and reuse of <i>Helianthemum</i> and <i>Citrullus colocynthis</i> biomass demonstrate high economic feasibility and environmental sustainability, with adsorption efficiencies of 85% and 77%, respectively, retained after three regeneration cycles using a mild 0.1 M HCl solution.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125805","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":"Study on Bamboo Stalks as Green and Low-Priced Carbon Sources for Wastewater Denitrification","authors":"Xiaobing Hu,&nbsp;Xiaoyu Chen,&nbsp;Kaihao Zhai,&nbsp;Weiwei Song,&nbsp;Chaowei Liu,&nbsp;Yue Gao","doi":"10.1007/s11270-025-08135-3","DOIUrl":"10.1007/s11270-025-08135-3","url":null,"abstract":"<div><p>To address the issue of insufficient carbon sources in biological heterotrophic denitrification and to provide a green and low-cost alternative, this study investigated the feasibility of using bamboo stalks as a carbon source. Five types of bamboo stalks—<i>Phyllostachys pubescens</i> (Pp), <i>Phyllostachys sulphurea</i> (Ps), <i>Phyllostachys nigra</i> (Pn), <i>Dendrocalamus membranaceus</i> Munro (Dm), and <i>Bambusa glaucescens</i> (Bg)—were collected from eastern China. Their carbon release capacities and denitrification potentials were systematically evaluated. The results showed that bamboo contains higher integrated cellulose (59.06%) in bamboo stalks, which is much higher than lignin content (30.88%). A higher integrated cellulose as carbon sources in the initial stage of denitrification can promote the nitrate’s removal. Among the tested bamboo species, <i>Pn</i> and <i>Bg</i> exhibited the highest carbon release rates, at 1.57 ± 0.83 COD·mg·(g·d)⁻¹ and 1.05 ± 0.13 COD·mg·(g·d)⁻¹, respectively, which corresponded to effective nitrate removal performance. When the effluent NO₃⁻-N concentration was 15 mg·L⁻¹, their nitrate removal rates reached 71.53% ± 19.36 and 79.20 ± 21.49%, respectively. However, <i>Pn</i> showed higher nitrogen and phosphorus release (cumulative TN: 1.27 mg·g⁻¹; cumulative TP: 0.048 mg·g⁻¹), along with an elevated COD concentration (63.10 ± 77.86 mg·L⁻¹) in the effluent after denitrification. Therefore, <i>Bg</i> was identified as the most suitable carbon source for biological denitrification due to its balanced performance and lower pollutant release.</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 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125806","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":"Efficient Adsorption of Dye Pollutant by Anchoring Zr-MOF@GO Composite Matrix Microspheres: Performance and Mechanism Insights","authors":"Qianhui Ou,&nbsp;Yan Xiong,&nbsp;Li Chen,&nbsp;Deyong He,&nbsp;Chuxiang Zhou,&nbsp;Lan Wang","doi":"10.1007/s11270-025-08139-z","DOIUrl":"10.1007/s11270-025-08139-z","url":null,"abstract":"<div><p>The nanocomposite materials are highly promising candidates for adsorption applications in dyed wastewater due to their distinctive structural properties. In this work, the nanocomposite hybrids of UiO-66@GO were first synthesized by specifically anchoring Zr-based metal organic framework (MOF) of UiO-66 onto graphene oxide (GO) nanolayer through solvothermal method. Then the composite matrix microspheres (CMMs) of UiO-66@GO were subsequently prepared by embedding the obtained UiO-66@GO nanocomposite into sodium alginate (SA) microspheres through self-assembly cross-linking process. Finally, the prepared UiO-66@GO CMMs were applied for the adsorption of organic dye pollutant and showed efficient water purification performance. As a result, the UiO-66@GO CMMs exhibited selective cationic dye adsorption for Rhodamine B (RhB⁺). The experimental results revealed that the adsorption kinetics followed by the pseudo-second-order (PSD) model with rate constant k₂ = 0.95 × 10^–3 g mg⁻¹ min⁻¹, and the thermodynamics followed by the Langmuir model with adsorption capacity of 345.66 mg mg⁻¹. Notably, the UiO-66@GO CMMs demonstrated excellent adsorption removal of a significant removal efficiency of 98% towards 10 ppm Rh-B and a rapid adsorption response time of ~ 5 min. Meanwhile, the UiO-66@GO CMMs maintained long-term stability with adsorption efficiency &gt; 95% over 30 days and effective reuse with resorption efficiency &gt; 90% using DMF-H₂O as eluent. In this study, SA has served as a porous supporting matrix to immobilize UIO-66@GO nanoparticles, having mitigated issues of aggregation and leaching common to nanoscale adsorbents while improving reusability. The synergistic effect between UIO-66 and GO has further enhanced pollutant adsorption capacity, demonstrating significant potential for dye wastewater treatment applications.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125763","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, Characterisation and Photocatalytic Properties of ZnO/Carbonaceous Gelatin-Based Aerogel Material for Dyes Degradation in Water","authors":"Bouchra Nechchadi,&nbsp;Zineb Naribi,&nbsp;Anas Salhi,&nbsp;Mohammed El Krati,&nbsp;Soufiane Tahiri","doi":"10.1007/s11270-025-08123-7","DOIUrl":"10.1007/s11270-025-08123-7","url":null,"abstract":"<p>In this work, new ZnO/Carbonaceous gelatin-based aerogel (ZnO/CGA) materials with different weight ratios were prepared, and their photocatalytic properties were evaluated. The gelatin used was extracted from hide waste of tanneries. Compared to the pure ZnO, all the ZnO/CGA materials prepared exhibited higher degradation efficiency for methylene blue (MB), ZnO(50%)/CGA showed the optimal performance among them. Adding CGA to ZnO reduces the band gap to 3.28 eV, promotes the effective dispersion of ZnO particles, enhances electrons conduction, and minimizes the e⁻/h⁺ pair recombination. The impacts of solution pH, dye concentration, catalyst mass, UV irradiation time, and the presence of H₂O₂, organic solvents (ethanol and acetone), and salts were investigated. The highest degradation rate (99.25%) of MB dye at 20 mg.L^-1 was achieved by using 0.5 g.L^-1 of ZnO(50%)/CGA, operating at pH 6 for a duration of 3 hours. Moreover, the catalyst demonstrated reusability and stability across multiple cycles. The innovative addition of carbonaceous gelatin-based aerogel (CGA) to ZnO not only improves photocatalytic performance but also contributes to the sustainable use of tannery waste as a precursor material.</p>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117672","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":"Integrating Simulation and Experimental Approaches for Nitrogen Removal: Feammox Enrichments and Bioaugmentation with High Fe(III) Demand","authors":"Carolina Rodríguez,&nbsp;Jaime Cisternas,&nbsp;Jennyfer Serrano,&nbsp;Eduardo Leiva","doi":"10.1007/s11270-025-08134-4","DOIUrl":"10.1007/s11270-025-08134-4","url":null,"abstract":"<div><p>Nitrogen is an essential element for life but its excessive release into the environment in the form of reactive nitrogen causes severe damage, including acidification and eutrophication. One of the main sources of nitrogen pollution is the use of fertilizers in agricultural soils. Feammox is a recently described pathway that couples ammonium (NH₄⁺) oxidation with iron (Fe) reduction. In this study, the enrichment and bioaugmentation of anaerobic sludge under conditions that promote Feammox activity were investigated. The first enrichment stage (E1) achieved 28% of ammonium removal after 28 days of incubation, with a production of 30 mg/L of Fe²⁺. E1 was then used as inoculum for two enrichments at 35 °C with different carbon sources: sodium acetate (E2) and sodium bicarbonate (E3). Neither E2 nor E3 showed significant NH₄⁺ removal, but E2 was highly effective in iron reduction, reaching Fe²⁺ concentrations of 110 mg/L. Additionally, an increase in nitrate (NO₃⁻) concentration was observed, which may indicate the occurrence of this pathway in the Feammox process. The Monod kinetic model, analyzed using AQUASIM software, showed a good fit to the experimental data for NH₄⁺, NO₃⁻, and Fe²⁺. Sequencing analysis revealed the presence of phyla associated with Feammox activity. Although there was only a slight difference in NH₄⁺ removal between the bioaugmented and non-augmented control sludge, the bioaugmented sludge was statistically superior in nitrate production and iron reduction. This study provides valuable insights into the enrichment and bioaugmentation of the Feammox process potential large-scale wastewater treatment applications.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117668","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}