Journal of Environmental Chemical Engineering最新文献

{"title":"Enhanced photocatalytic hydrogen evolution via Nitrogen and Sulfur Co‐functionalized Carbon Quantum Dot‐Modified ZnO nanocomposites: Experimental insights and mechanistic understanding","authors":"H.J. Yashwanth ,&nbsp;M. Madhukara Naik ,&nbsp;Udayabhanu ,&nbsp;M. Prathap Kumar ,&nbsp;M. Vinuth ,&nbsp;M.S. Dileep ,&nbsp;K.N. Narasimha murthy","doi":"10.1016/j.jece.2025.119249","DOIUrl":"10.1016/j.jece.2025.119249","url":null,"abstract":"<div><div>A chemical reaction that breaks down water into hydrogen and oxygen is fueled by light, usually sunlight, in a process known as photocatalytic H₂ production. The objective is to use solar energy to create clean hydrogen fuel, which is a viable source of sustainable energy that may be utilized in fuel cells, transportation, and other energy applications. Herein, we report the hydrogen generation efficiency of Nitrogen and sulfur co-functionalized NS-CDOTs/ZnO (NSCZ) nanocomposite. The hydrothermal process was used to synthesize. The prepared NSCZ nanocomposites were characterized by Raman, XRD, FTIR, XPS, Photoluminescence and UV-Visible spectroscopic studies. The developed NSCZ nanocomposite exhibits improved photocatalytic hydrogen generation activity of 378 μmolh⁻¹g⁻¹ which is ten times superior to that of ZnO (38 μmolh⁻¹g⁻¹). The decreased bandgap, reduced recombination rate, and better work function of the photogenerated eˉ,-h⁺ pair of NSCZ photocatalysts are responsible for the enhanced photocatalytic hydrogen generation. The NSCZ nanocomposite exhibited active photodegradation for Methylene blue dye under visible light.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119249"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sea cucumbers as bioindicators of pollution and sea cucumber microbiomes as markers of environmental stress: A review","authors":"Úrsula Gallardo-Gómez ,&nbsp;Belén Juárez-Jiménez ,&nbsp;David Correa-Galeote ,&nbsp;Alberto Zafra-Gómez","doi":"10.1016/j.jece.2025.119246","DOIUrl":"10.1016/j.jece.2025.119246","url":null,"abstract":"<div><div>The gut microbiota of sea cucumbers has been revealed to be a sensitive indicator of both the physiological state and environmental conditions affecting these echinoderms. Thus, they offer promising potential as a biomonitoring tool for assessing environmental stress. The present review article aims to synthesize the most relevant findings on the composition and variability of gut microbiota in different species of sea cucumbers. The review focuses on their response to emerging contaminants such as microplastics, heavy metals, endocrine disruptors and pharmaceutical compounds, given the relevance of this to antibiotics. Included studies reveal that the intestinal microbial community is highly diverse and dynamic, depending on multiple factors such as the physiological state of the organism, environmental conditions of the habitat, diet, seasonality and exposure to contaminants. Among the microbial groups identified, <em>Pseudomonadota</em> clearly stands out as the predominant phylum in all species studied. Overall, the evidence produced supports the use of gut microbiota as an effective bioindicator for assessing anthropogenic impact on marine ecosystems. However, further research incorporating multi-omics approaches and functional analyses are needed to better understand the ecological implications of changes in the microbial community. An important contribution of the present work is the update of the taxonomic nomenclature pertaining to the microorganisms described in the work according to the LPSN (List of Prokaryotic names with Standing in Nomenclature).</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119246"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial electrochemical composting reduced the risk of antibiotic resistance genes","authors":"Qingqing Qiao ,&nbsp;Xiaorui Qin ,&nbsp;Feihong Zhai ,&nbsp;Jun Xie ,&nbsp;Xiuqing Jing ,&nbsp;Xiaodong Zhao ,&nbsp;Pingmei Yan ,&nbsp;Xiaojing Li ,&nbsp;Yongtao Li","doi":"10.1016/j.jece.2025.119248","DOIUrl":"10.1016/j.jece.2025.119248","url":null,"abstract":"<div><div>The use of livestock and poultry manure as fertilizer is the primary way for antibiotic resistance genes (ARGs) to enter agricultural soil; therefore it is crucial to reduce ARGs during composting. In this study, microbial fuel cells (MFCs) were employed to strengthen the removal of ARGs in composting. The results indicated that mobile genetic elements (MGEs) were the primary factors influencing ARGs, and the stimulation of biocurrent by MFCs effectively reduced the abundance of ARGs positively correlated with MGEs. Although the risk of <em>vanS</em>, <em>bcrA</em> and <em>tetR</em> were classified as III, IV and IV, respectively, these ARGs were found to have a high transmission risk. The abundances of <em>vanS</em>, <em>bcrA</em> and <em>tetR</em> showed the lowest in MFCs, with reductions of 22 %, 50 % and 21 %, respectively, compared to the control. Caudoviricetes exhibited significant ARG co-occurrence with six bacteria, particularly Bacteroidetes-Caudoviricetes and Firmicutes-Caudoviricetes, whose abundance was 52 % lower in MFCs than that in the open-circuit control. The abundance of potential human pathogenic bacteria (HPB) decreased by 37 % after electrode introduction, and further declined to 67 % with the stimulation of biocurrent. Besides, the correlation between ARGs and HPB decreased by 44 % after the introduction of electrodes, while no correlation was found between ARGs and HPB in MFCs. Overall, this study offered an efficient and safe solution for composting using electrochemical technology.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119248"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coconut-shell biochar fixed-bed for groundwater remediation: Co-removal of microplastics and perfluorooctanoic acid","authors":"Xinle Han ,&nbsp;Jing Xu ,&nbsp;Yanfeng Shi ,&nbsp;Lixingzi Wu ,&nbsp;Ling Fu ,&nbsp;Weina Xue ,&nbsp;Yanhao Zhang ,&nbsp;Xu Zhang ,&nbsp;Xuli Jing ,&nbsp;Zhibin Zhang","doi":"10.1016/j.jece.2025.119244","DOIUrl":"10.1016/j.jece.2025.119244","url":null,"abstract":"<div><div>Microplastics and PFOA are emerging contaminants that are widely present in groundwater, posing threats to human health and ecosystems. This study aimed to investigate the remediation of polystyrene microplastics (PS-MPs) and perfluorooctanoic acid (PFOA) in groundwater using waste coconut shell biochar in permeable reactive barriers (PRBs). Fixed-bed column experiments were conducted with different bed depths, flow rates, initial pollutant concentrations, and co-contamination conditions. Results demonstrated that coconut shell biochar exhibited an effective adsorption capacity, with an initial concentration of 1 mg/L, flow rate of 0.5 mL/min, and bed depth of 2.5 mm, removal efficiencies of 75.00 % for PFOA and 36.24 % for PS-MPs were achieved within 10 days. Increasing the depth of biochar from 1.5 mm to 5.0 mm enhanced the removal efficiencies (PFOA:96.43 %, PS-MPs:61.72 %) and extended breakthrough times (480 min for PS-MPs, 2410 min for PFOA). Lower flow rates (0.2 mL/min) extended hydraulic retention time, improving adsorption (both PFOA and PS-MPs were &gt; 75 %), while higher pollutant concentrations accelerate PRB depletion and reduce removal efficiency. Additionally, the presence of PS-MPs exhibited dual effects on PFOA remediation: promoting adsorption at low concentrations but causing competitive inhibition at high concentrations. Meanwhile, increasing PFOA concentrations intensified electrostatic repulsion, which reduced the removal efficiency of PS-MPs from 36.24 % to 10.43 % as the PFOA concentration increased from 0 to 10 mg/L. Furthermore, among the tested models (Thomas, Yoon-Nelson and BDST), the Thomas model best fitted the fixed-bed adsorption data for PS-MPs, PFOA, and composite contamination.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119244"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-syringe magnetic dispersive µSPE exploiting magnetic almond shell biochar@ZIF-8 for parabens determination by UHPLC-UV","authors":"Diego Barzallo ,&nbsp;Edwin Palacio ,&nbsp;Laura Ferrer","doi":"10.1016/j.jece.2025.119245","DOIUrl":"10.1016/j.jece.2025.119245","url":null,"abstract":"<div><div>An in-syringe magnetic dispersive micro-solid phase extraction (MD-µSPE) system followed by UHPLC-UV analysis has been developed exploiting a hybrid sorbent based on magnetic alkali-activated almond shell biochar (MAASB), which is used as a support for in-situ growth of ZIF-8 (MAASB@ZIF-8), for the extraction and preconcentration of parabens (PBs) in environmental water and urine samples. Experimental designs were employed to optimize the pyrolysis conditions for biochar production, including temperature, heating rate, and residence time, and several parameters affecting extraction efficiency, e.g., pH, extraction time, ionic strength, eluent type, elution time and eluent volume. Under optimized conditions, the method showed detection limits between 0.05 and 0.09 ng mL⁻¹ for methyl, ethyl, propyl, and butyl paraben. The precision expressed as RSD (n = 3) showed intraday and interday ranges of 2.2–4.7 % and 2.6–4.3 %, respectively, demonstrating the good precision of the proposed methodology. Recovery studies were performed in the absence and presence of PBs spiked at different concentrations (10–30 ng mL⁻¹), yielding good recoveries in the range of 88–104 %. These results confirm that MAASB@ZIF-8 is an efficient sorbent for the determination of PBs, offering high porosity, magnetic responsiveness, and stability. Furthermore, the proposed method was evaluated with AGREE, ComplexMoGAPI, and BAGI metrics, evidencing its environmentally friendly approach, as well as the practicality of the method compared to previous works.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119245"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced degradation of GenX in wastewater via iodide-assisted UV/sulfite system","authors":"Magdalena Zarębska ,&nbsp;Sylwia Bajkacz ,&nbsp;Ewa Felis ,&nbsp;Paulina Sowik ,&nbsp;Agnieszka Bluszcz","doi":"10.1016/j.jece.2025.119226","DOIUrl":"10.1016/j.jece.2025.119226","url":null,"abstract":"<div><div>Widespread PFAS contamination raises global concerns due to their persistence and ecological risks. Advanced reductive processes (ARPs) have emerged as a promising PFAS remediation strategy. In this study, we investigated GenX degradation, a next-generation alternative to PFOA, using an alkaline UV/sulfite/iodide (UV/S+I) system. In this process, hydrated electrons create a strongly reductive environment that enables contaminant decomposition. The addition of iodide to sulfite significantly enhanced GenX decay, following the trend UV/S+I &gt; UV/S &gt; UV/I. Under optimal conditions (2 mM I⁻, 10 mM SO₃²⁻), 99 % GenX removal was achieved within 30 min in pure water, with a rate constant of 0.152 min⁻¹ and the highest energy efficiency (EE/O = 126 kWh m⁻³). Degradation was most effective at pH 12 and independent of initial GenX concentration. PFOA degraded 2.3 times faster than GenX under similar conditions. Transformation products included trifluoroacetic acid, pentafluoropropanoic acid, and six other compounds. Application to real wastewater showed GenX removal rates of 0–57 % and PFOA removal of 31–98 %, with better performance in treated wastewater. In model solutions, 100 % total defluorination was achieved. Overall, the optimized UV/S+I system demonstrates strong potential for removing both emerging and legacy PFAS from wastewater with elevated pH, supporting the development of sustainable environmental remediation technologies.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119226"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bimetallic CoMn-MOF decorated biochar as peroxymonosulfate activator for efficient ofloxacin degradation: Performance and mechanism insights","authors":"Long Zhang ,&nbsp;Minghan Cao ,&nbsp;Junying Song ,&nbsp;Mengxiang Hui","doi":"10.1016/j.jece.2025.119242","DOIUrl":"10.1016/j.jece.2025.119242","url":null,"abstract":"<div><div>The application of metal-organic framework (MOF)-based peroxymonosulfate (PMS) catalysts in heterogeneous reactions has attracted widespread interests. However, improving the efficiency and stability of the catalysts remains considerable challenges. Herein, bimetallic CoMn-MOF was constructed on the surface of biochar derived from peanut shell to fabricate the CoMn-MOF/biochar (CMB) composite as PMS catalyst using a simple hydrothermal process. Under optimal degradation conditions, i.e., [CMB] = 1 g/L, [PMS] = 1 mM, the ofloxacin (OFL) degradation efficiency can reach 92.9 % in 120 min in CMB/PMS system, and in which the reaction rate constant (0.1075 min⁻¹) was 82 times higher than that in CoMn-MOF/PMS (0.0013 min⁻¹). The remarkable improved catalytic performance was attributed to the multi active sites CMB composite enhanced electron transfer rate to produce abundant reaction active species. Besides, CMB exhibited high OFL degradation efficiency (77.8 %) after five cycles and strong mineralization efficiency (66.2 %) by effectively activating PMS. Moreover, the toxicity of OFL and its intermediates after degradation was greatly reduced based on the TEST results. The primary active species identified in this study were O₂^•-, ¹O₂ and SO₄^•- for OFL degradation in the CMB/PMS system. Furthermore, based on the results of the quenching experiments and HPLC-MS analysis, a catalytic degradation mechanism for OFL was proposed along with three potential degradation pathways. This research proposes a novel reference to develop an effective PMS catalyst for wastewater treatment through the combination of biochar and bimetallic MOFs.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119242"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subcellular-scale directed green synthesis of nanoparticles: First insight into protein-level regulatory mechanisms of electron donors on palladium nanoparticle biosynthesis pathways in Bacillus megaterium Y-4","authors":"Yating Jia ,&nbsp;Jing Lu ,&nbsp;Yongfen Long ,&nbsp;Bin Hou ,&nbsp;Yuancai Chen","doi":"10.1016/j.jece.2025.119241","DOIUrl":"10.1016/j.jece.2025.119241","url":null,"abstract":"<div><div>Microbially synthesized palladium nanoparticles (bio-Pd⁰) hold great promise for catalysis, but the catalytic activity of bio-Pd⁰ relies heavily on its subcellular localization. Electron donors could affect enzymatic reduction efficiency of Pd(II) and control the subcellular location of bio-Pd⁰, yet the underlying mechanisms were unclear. Here, the regulatory mechanism of electron donors on Pd(II) reduction pathways in the non-model bacterium <em>B. megaterium</em> Y-4 was comprehensively investigated by multiple methodologies including cell fractionation, DPV/CV, XPS, FTIR, TEM, proteomics. Key findings revealed that membrane-bound hydrogenases drove periplasmic Pd⁰ synthesis via biohydrogen, while the new one-electron extracellular transfer (EET) channel consisting of membrane-attached cytochromes (<em>ccsB</em>) and multi-heme cytochromes-bound flavin mediated the extracellular Pd(II) reduction. Notably, electron donors could regulate Pd(II) reduction routes, thereby altering the subcellular distribution of bio-Pd⁰. In lactate-added systems, the higher expression of these proteins related to EET processes (NADH dehydrogenase, membrane-attached cytochrome c, heme-based electron transfer proteins and flavodoxin) promoted extracellular Pd⁰ formation (65.4 %). Whereas, in formate-added systems, hydrogenase-driven periplasmic Pd⁰ synthesis (64.0 %) was facilitated due to more active formate dehydrogenase, hydrogenase and NADPH-reducing hydrogenase. Moreover, synergistical metabolism of formate and lactate balanced both pathways and maximized the apparent Pd(II) reduction efficiency (98.13 %). Proteomic analysis confirmed formate-specific energy rewiring and compensatory energy via Na⁺-translocating Rnf complex and V-ATPase overexpression. These findings significantly advance our understanding of microbial metal reduction by delineating a true dual-pathway strategy in a Gram-positive bacterium, highlighting the mechanistic diversity beyond model Gram-negative systems and offering new insights for harnessing non-model organisms in biocatalysis and nanoparticle synthesis.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119241"},"PeriodicalIF":7.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trigger efficient peroxydisulfate-assisted photocatalysis by S-scheme Co3O4/BiOCl heterojunctions: Vital roles of Co2+/Co3+ redox centers and oxygen vacancies","authors":"Chang-Bin Yu ,&nbsp;Chong Xu ,&nbsp;Lin He ,&nbsp;Wei-Ya Huang ,&nbsp;Kai Yang ,&nbsp;Dan Li","doi":"10.1016/j.jece.2025.119195","DOIUrl":"10.1016/j.jece.2025.119195","url":null,"abstract":"<div><div>Persulfate-assisted photocatalysis (PA-PC) has been considered as an efficient technique for wastewater treatment. However, regulating interfacial charge transfer and radical/non-radical active species in the reaction system is still a challenge. This study successfully decorated Co₃O₄ nanoparticles on BiOCl flower-like microspheres <em>via</em> a simple solution method, forming S-scheme Co₃O₄/BiOCl heterojunctions with enriched oxygen vacancies (OVs) for highly efficient PA-PC of tetracycline hydrochloride (TC). After exposure to 18-min visible light illumination in the presence of peroxydisulfate (PDS) (namely the BOC-5/PDS/Vis system), the optimized catalyst, BOC-5, reached a TC degradation of 92.3 % and a total organic carbon (TOC) removal of 66.2 %, outperforming many reported catalysts in the literature. Common anions (Cl⁻, CO₃²⁻, NO₃⁻) and cations (Zn²⁺) showed negligible interference on the performance of BOC-5/PDS/Vis system, demonstrating its excellent anti-interference capability. Such system was also proven with a broad pH adaptability in the range of 3.0 – 11.0. Cycling tests confirmed the outstanding stability of BOC-5, while toxicity assessments revealed significantly reduced ecological toxicity of intermediates in comparison with TC. The construction of S-scheme Co₃O₄/BiOCl heterojunctions with intimate 0D/2D interfacial contact markedly promoted charge carrier separation efficiency. The photogenerated electron (e^–) enabled the reduction of Co³⁺ to Co²⁺, accelerating the Co²⁺/Co³⁺ redox cycle to facilitate e^– transfer for PDS activation. The OVs improved light absorption and induced generation of more superoxide radicals (•O₂⁻) as the dominant active species. These along with singlet oxygen (¹O₂) boosted the degradation efficiency of TC. Our research presented efficient interfacial and defect engineering strategies for the design of heterojunctions aiming at antibiotic removal from wastewater through PA-PC.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119195"},"PeriodicalIF":7.2,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disposable 3D-printed electrochemical sensor for in loco simultaneous monitoring of emerging pharmaceutical pollutants in aquatic ecosystems","authors":"Eduardo Constante Martins ,&nbsp;Edson Roberto Santana ,&nbsp;Luan Gabriel Baumgarten ,&nbsp;João Paulo Winiarski ,&nbsp;Jéssica de Bona ,&nbsp;Luis Henrique da Silveira Lacerda ,&nbsp;Gustavo Amadeu Micke ,&nbsp;Guilherme Mariz de Oliveira Barra ,&nbsp;Iolanda Cruz Vieira ,&nbsp;Almir Spinelli","doi":"10.1016/j.jece.2025.119230","DOIUrl":"10.1016/j.jece.2025.119230","url":null,"abstract":"<div><div>The contamination of aquatic ecosystems with emerging pharmaceutical pollutants such as acetaminophen (AP) and 17β-estradiol (E2) is of global concern. For in loco analysis, a disposable miniaturized electrochemical sensor was fabricated by 3D printing conductive carbon black-polylactic acid (CB-PLA) filament onto an acrylonitrile butadiene styrene (ABS) platform. Electrochemical activation in alkaline medium promoted PLA saponification, exposing conductive CB sites. The effectiveness of this treatment was confirmed by electrochemical, microscopic, and spectroscopic techniques. Computational studies supported the adsorption mechanism of AP and E2 on the activated CB-PLA surface, with stronger interactions observed for E2. Calibration curves by square wave voltammetry were constructed for AP and E2 in concentration ranges of 0.50–25 and 0.75–50 μmol L⁻¹, respectively, with detection limits of 0.15 µmol L⁻¹ for AP and 0.23 µmol L⁻¹ for E2. The sensor was applied to in loco simultaneous determination of AP and E2 in water samples (freshwater, brackish, seawater) from Florianópolis, Brazil, a region of tourist and oyster and shellfish production. Statistical comparison with HPLC-DAD confirmed equivalent precision and accuracy. The sensor exhibited satisfactory repeatability, tolerance to common interferents, and reuse capability for up to three analyses. Coupled to a portable smartphone-operated potentiostat, the device proved to be a low-cost and practical tool for on-site environmental monitoring. Finally, greenness assessment by the AGREE metric (scoring 0.91) confirmed the environmentally friendly character of the method, reinforcing its potential as a sustainable alternative for screening emerging contaminants in aquatic ecosystems.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"13 6","pages":"Article 119230"},"PeriodicalIF":7.2,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}