Journal of hazardous materials advances最新文献

{"title":"An Intelligent Deep Learning based Classification with Vehicle Routing Technique for municipal solid waste management","authors":"Nasreen Banu Mohamed Ishaque,&nbsp;S. Metilda Florence","doi":"10.1016/j.hazadv.2025.100655","DOIUrl":"10.1016/j.hazadv.2025.100655","url":null,"abstract":"<div><div>Municipal solid waste (MSW) management is a critical challenge in urban areas due to increasing waste production and its environmental impact. This study presents an Intelligent Deep Learning-driven Classification with Vehicle Routing (IDLCVR-MSW) system to enhance waste classification accuracy and optimize transportation efficiency. The classification model integrates YOLOv3 for object detection, enhanced with ResNet-50 and XGBoost, achieving a high accuracy of 98.88 %, surpassing existing models such as MobileNetV2 and ResNet-50. To optimize waste collection routes, an Improved Moth Flame Optimizer (IMFO) incorporating Levy flight is implemented, reducing transportation costs by 15–20 % and greenhouse gas (GHG) emissions by 12–18 % compared to traditional methods like Particle Swarm Optimization (PSO). Experimental validation on real-world datasets confirms the model's effectiveness in improving operational efficiency and sustainability. The proposed system supports smart city initiatives by reducing waste collection costs, minimizing environmental impact, and promoting efficient resource utilization. Future work should explore IoT-enabled smart bins and renewable-energy-based waste collection vehicles to further enhance waste management strategies.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100655"},"PeriodicalIF":5.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using quartz crystal microbalance with dissipation monitoring to advance plastic risk assessment research","authors":"Nicholas M.K. Rogers ,&nbsp;Moshe Herzberg ,&nbsp;Ines Zucker","doi":"10.1016/j.hazadv.2025.100660","DOIUrl":"10.1016/j.hazadv.2025.100660","url":null,"abstract":"<div><div>The risk of plastic pollution in the environment is extensive, affecting various matrices and organisms, as well as processes and co-transport of other contaminants. To sufficiently address this complex, multi-dimensional challenge, the span of methods and instrumentation to plastic research must be equally diverse. Quartz crystal microbalance with dissipation monitoring (QCM-D) is an acoustic sensing piezoelectric instrument that can offer unique information relating to both the extent and mechanisms of interactions of plastics in the environment. But, thus far, QCM-D has been highly underutilized and misinterpreted to study environmental plastic fate. When considering the wider breadth of plastic studies, QCM-D plastic research will help to complement current life cycle assessments of plastic fate in environmental systems. In this review, the unique applications of QCM-D pertaining to environmentally relevant plastic research are examined. Through surveying forty-five peer-reviewed articles—which fall into four primary categories—both gathered knowledge and the shortcomings of current QCM-D research on plastics are highlighted. These shortcomings include a narrow range of tested plastics and environmental conditions, as well as neglecting the mechanical compliance of the particle-surface contact. Furthermore, recommendations for the expansion of QCM-D plastic research are provided, with foci including mechanisms of plastic attachment/detachment, targeted detection, and complementary theoretical modeling.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100660"},"PeriodicalIF":5.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of biowaste potential in Gedeo Zone: A step toward advanced biogas and biofertilizer production in future for sustainable waste management","authors":"Abu Duguma Debele ,&nbsp;Jemal Adam ,&nbsp;Birhanu Assefa ,&nbsp;Workineh Mengesha Fereja","doi":"10.1016/j.hazadv.2025.100661","DOIUrl":"10.1016/j.hazadv.2025.100661","url":null,"abstract":"<div><div>Resource depletion is at an all-time high, highlighting the urgent need for sustainable development that balances ecological and economic perspectives. As societies grow, effective resource management is crucial to meet the needs of both present and future generations. Waste generation, once seen as a burden, now holds the potential to create wealth and employment through innovative management strategies. This study explores the potential of biowaste for biofertilizer and biogas production in the study area by quantifying waste generation from households, commercial units, streets, and marketplaces while examining its composition in relation to socioeconomic factors. Findings reveal average biowaste generation rates of 0.97 ± 0.20 kg/person/day from households, 12.8 ± 3.05 kg/day from commercial units, 10.53 ± 1.12 kg/day from marketplaces, and 9.37 ± 1.15 kg/day from streets. The biowaste composition includes 45 % fruit, 33 % vegetation, and 15 %-yard waste, with other organic waste types making up 7 %. The study also assessed the physical properties of the bio waste, showing high moisture content (60.1–80 %) and volatile matter (80–85 %), with an average caloric value of 2,600 kcal, indicating its suitability for composting and anaerobic digestion. Annually, approximately 335,573 tons of biowaste could be collected from households, alongside 3,724 tons from commercial sources. This could yield up to 169,675 tons of compost/year or generate a biogas potential of 10,180,500 m³/year, with actual production at 9,162,450 ± 148 m³. This study emphasizes the significant potential of biowaste as a valuable resource, enhancing waste management practices and promoting environmental protection in developing countries.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100661"},"PeriodicalIF":5.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biological treatment of acid mine drainage: An eco-sustainable strategy for removal of toxic pollutants","authors":"Adegoke Isiaka Adetunji ,&nbsp;Mariana Erasmus","doi":"10.1016/j.hazadv.2025.100659","DOIUrl":"10.1016/j.hazadv.2025.100659","url":null,"abstract":"<div><div>The indiscriminate discharge of acid mine drainage (AMD) from mine sites and other industrial operations has been a great concern, resulting in serious environmental and public health hazards. The waste stream consists of high concentrations of toxic organic and inorganic substances, warranting its treatment before disposal. Over the years, traditional physicochemical approaches, including membrane separation and ion exchange have been employed for AMD treatment. However, these techniques are unsatisfactory due to high operational costs, operational difficulties, and the release of secondary pollutants. Therefore, biological remediation strategies involving the application of microorganisms, plants, or plant-microbe interactions have increasingly gained attention as a green and sustainable solution for eliminating toxic pollutants present in the AMD. In addition, beneficial value-added products, including metals, rare earth elements, and elemental sulfur can be recovered from the acidic mine water, thus promoting wastewater management and reuse. The present review provides insights into the applicability of various biological technologies in the removal of toxic pollutants present in AMD. In addition, it discusses multiple beneficial valuable products that can be recovered from the acidic mine water, using biological approaches. Some constraints impeding commercial remediation of AMD as well as recommendations for future perspectives are also highlighted.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100659"},"PeriodicalIF":5.4,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly effective lead removal by novel alkaline biochar prepared by pyrolysis of woody biomass impregnated with low-level NaOH","authors":"Qiangu Yan ,&nbsp;Neda Arabzadeh Nosratabad ,&nbsp;Xiangwei Du ,&nbsp;Timothy Ketelboeter ,&nbsp;Caixia Wan ,&nbsp;Zhiyong Cai","doi":"10.1016/j.hazadv.2025.100657","DOIUrl":"10.1016/j.hazadv.2025.100657","url":null,"abstract":"<div><div>The remediation of heavy metal-contaminated environments, particularly those polluted with lead (Pb), remains a critical challenge due to the metal's toxicity and persistence. This study developed a novel alkaline biochar for enhanced Pb adsorption, prepared from pine wood through low-level NaOH (0–2 wt%) dry impregnation followed by pyrolysis at temperatures ranging from 350 to 600 °C. Characterization using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) elucidated the alkaline biochar's surface modifications and adsorption mechanisms. Adsorption studies showed that 2 % NaOH-modified biochar (2 % NaOH-BC) achieved a maximum adsorption capacity of 230 mg g⁻¹, representing a 14-fold improvement over non-alkaline treated biochar (0 % NaOH-BC, 16.1 mg g⁻¹). Kinetic studies confirmed chemisorption as the dominant mechanism, described by the pseudo-second-order model, while Langmuir isotherm analysis (R² = 0.933–0.970) indicated monolayer adsorption. XPS analysis revealed the emergence of Pb²⁺ peaks after adsorption, indicating successful Pb²⁺ uptake. The analysis provided insights into the adsorption mechanism, suggesting ion exchange and coordination interactions involving oxygen-containing functional groups. Electrostatic interactions also played a role, as increasing pH (3.0–11.0) enhanced Pb²⁺ binding due to surface deprotonation, with optimal adsorption at pH 11.0 (266 mg g⁻¹, 100 % efficiency). Additionally, desorption studies demonstrated effective recyclability, with the 2 % NaOH-BC retaining 60.59 % of its adsorption capacity after four cycles. These findings highlight the potential of low-cost NaOH-treated biochar for effective and sustainable Pb remediation.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100657"},"PeriodicalIF":5.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-invasive leukemia detection via CSRR sensor","authors":"P Pavan Kumar ,&nbsp;Suhas RP Eedala ,&nbsp;Ainesh Yammanuru ,&nbsp;A. Nirmala Grace ,&nbsp;A. Christina Josephine Malathi","doi":"10.1016/j.hazadv.2025.100654","DOIUrl":"10.1016/j.hazadv.2025.100654","url":null,"abstract":"<div><div>This paper introduces a novel non-invasive approach for detecting leukemia cancer using a complementary split-ring resonator (CSRR) biosensor at the 2.45 GHz Industrial, Scientific and Medical (ISM) band. A CSRR biosensor is designed and optimized using the Ansys HFSS simulation software, which utilizes a copper split-ring resonator on a dielectric FR-4 epoxy substrate. The sensor geometry was fine-tuned iteratively to achieve a maximum sensitivity of 46.96 %, which is crucial for biomedical applications. Standard photolithography techniques were adopted to create the sensor, whose performance is validated by making scattering parameter measurements with the help of a vector network analyzer (VNA) yielding excellent agreement with the results of simulations. This biomarker-sensitive CSRR-based sensor uses a fingertip placed non-invasively on an active sensor area. The non-invasive Real-time testing was done on healthy individuals aged 18 to 46 across various blood groups (A1+, <em>B</em>+, <em>O</em>+), with comparative tests involving simulated data for HL-60 leukemia cancer cells. The results showed a downward frequency shift in the presence of cancer cells compared to healthy samples. Sensitivity and permittivity analysis, with permittivity specifically analyzed using MATLAB, confirmed the sensor's ability to differentiate between healthy and cancerous conditions effectively. Furthermore, real-time testing demonstrated consistent S₂₁ parameter behavior, highlighting the sensor's reliability. The main results obtained were a considerable shift downward in the resonant frequency in the case of HL-60 cancer cells in simulation and real-time measurements. This behavior demonstrates the potential of the sensor to identify biomarkers of early-stage cancers by interacting with cells and tissues under the skin. The integration of VNA with the CSRR biosensor allowed for monitoring and analysis with high accuracy, establishing a reliable framework for non-invasive cancer screening.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100654"},"PeriodicalIF":5.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"‘‘Spatial distribution, abundance, and risk assessment of microplastics in the surface water of Kaptai Lake: Southeast Asia's largest artificial reservoir’’","authors":"Md Fardullah ,&nbsp;Mohammad Saimon Islam ,&nbsp;Khadigha Akther ,&nbsp;Md. Tanvir Hossain ,&nbsp;Fataha Nur Robel","doi":"10.1016/j.hazadv.2025.100640","DOIUrl":"10.1016/j.hazadv.2025.100640","url":null,"abstract":"<div><div>Microplastics (MPs) are ubiquitous in aquatic habitats and have the potential to seriously harm the ecosystem, creatures, and public health. Microplastic pollution in water has garnered attention, but regional microplastic distribution, shape, and risk are unknown. We collected 42 samples from 14 sampling sites in Kaptai Lake to study the spatial variations, causes, transfer, composition profile, and environmental impact of MPs in water. The sampling was done in January 2024 by using a manta trawl having a mesh size of 300 μm. The MPs in water samples were digested, vacuum filtered and quantified using an optical microscope. The number of MPs ranged from 13.33 ± 6.67 to 683 ± 70.55 items/m³. Plastic particles were most often transparent (38.07 %) and red (11.01 %). MPs types in water were ordered as follows: Fibers &gt; foams &gt; fragments &gt; lines &gt; films &gt; pellets. According to the analysis in Fourier-transform infrared spectroscopy (FTIR), Polyethylene terephthalate (PET) (38.57 %) and polyethylene (PE) (36 %), with filamentous (33.33 %) and irregular (32.37 %) morphologies, were the most common polymers. Most MPs (83.98 %) were between 0.3 and 1.5 mm, followed by 3–5 mm (8.75 %) and 1.5–3 mm (7.27 %). Scanning electron microscopy (SEM) was employed to examine the surface deformation of different polymer types due to environmental exposure where the PE showed the highest degree of deformity. The polymer hazard index (PHI), the potential ecological risk index (RI), and, the ecological risk factor (E_r) values for Lake water indicate serious MPs risk. The pollution load index (PLI) had very low MP contamination. Household wastewater and fishing may be related to local MPs. This study may provide a MPs contamination baseline in Bangladesh's extensive freshwater ecosystem. The results will enhance knowledge of MPs pollution risk and contamination levels, which could facilitate the development of remediation strategies.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100640"},"PeriodicalIF":5.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the health of soils polluted by municipal solid waste landfill","authors":"Anna Kucherova,&nbsp;Tatiana Minnikova,&nbsp;Sergey Kolesnikov,&nbsp;Ekaterina Khrapai,&nbsp;Alina Nalivaychenko,&nbsp;Alexey Sherstnev","doi":"10.1016/j.hazadv.2025.100643","DOIUrl":"10.1016/j.hazadv.2025.100643","url":null,"abstract":"<div><div>The number of landfills for municipal solid waste is growing every year. The aim of our study is to assess the health of soil polluted by municipal solid waste landfill. 13 points were examined: municipal solid waste landfill (No. 1–8), abandoned field (No. 9–11) and cropland (No. 12–13). To assess soil pollution, the following indicators were calculated: the total pollution index (Zc), pollution load index (PLE), potential ecological risk (PERI). Geobotanical description of the sites was investigated, physical, chemical (pH, the content of easily soluble salts, humus content, the gross content of heavy metals), and biological (the total number of bacteria, the activity of catalase, invertase, and dehydrogenases, the length of roots and shoots of radish) indicators were studied. The integral indicator of the biological state of the soil (IIBS) was used to combine different biological indicators. To confirm the reliability and analysis of the obtained results, statistical methods of univariate analysis of the Tukey's post-hoc criterion, correlation analysis using the Spearman's criterion and multivariate factor analysis using the principal components method were used. According to the MPC/APC ratio, soil pollution with Cr exceeded the control by 18 times, Ni — by 4 times, Cu — by 45 times, Zn — by 51 times, As — by 5 times, and Pb — by 6 times. The data of the Z_c and PLE shows a high degree of pollution by heavy metals and an extremely high level of PERI the landfill area. There was a significant decrease in the activity of catalase and invertase and the total number of bacteria by 10–82%. The most informative and sensitive biological indicator was catalase activity. The data obtained by the study shows that the indicators of catalase activity, root length, and the total number of microorganisms can be used in monitoring and diagnosing the health of soils under solid waste landfills and the surrounding area.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100643"},"PeriodicalIF":5.4,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Associations between long-term particulate matter exposure and various metabolic syndrome components: Evidence from a prospective cohort study in Eastern China","authors":"Menghao Wang ,&nbsp;Yali Wang ,&nbsp;Liang He ,&nbsp;Renjie Chen ,&nbsp;Xia Meng ,&nbsp;Su Shi ,&nbsp;Zhibin Bu ,&nbsp;Jiong Wu ,&nbsp;Song Qiao ,&nbsp;Jing Guo ,&nbsp;Fengshun Chen ,&nbsp;Jing Yan ,&nbsp;Li Yang","doi":"10.1016/j.hazadv.2025.100656","DOIUrl":"10.1016/j.hazadv.2025.100656","url":null,"abstract":"<div><div>Epidemiological studies have suggested that exposure to particulate matter (PM) may increase the risk of developing metabolic syndrome (MetS). However, evidence on the long-term effects of PM exposure on the incidence of individual MetS's components remain limited and inconsistent. This knowledge gap highlights the need for further research to clarify the potential role of PM in the development and progression of MetS over extended periods. Follow-up data collected from a cohort in Eastern China, encompassing 44,720 individuals between 2014 and 2021, were utilized. Residential exposures to fine particles (PM_2.5) and inhalable particles (PM₁₀) for each participant were estimated using a random forest model with a spatial resolution of 1 × 1 km. The generalized estimating equations (GEE) model was employed to assess the associations of long-term PM exposures with incident MetS and its components, as well as with continuous metabolic indicators related to MetS. For each 10 μg/m³ increase in annual average concentration of PM_2.5, there were significant increases in the incidence of MetS (Relative risk: 1.17, 1.10–1.26), elevated triglycerides (TG) (1.17, 1.10–1.24), decreased high–density lipoprotein cholesterol (HDL-C) (1.18, 1.11–1.27), elevated fasting blood glucose (FBG) (2.05, 1.94–2.16), and elevated blood pressure (BP) (1.30, 1.17–1.44). The RR associated with PM₁₀ were smaller compared to PM_2.5 but still statistically significant. The analyses of continuous metabolic indicators indicated that long-term exposure to PM was positively associated with FBG and systolic BP, and inversely associated with HDL-C. This cohort study provides valuable evidence of the increased risk of MetS and its components associated with long-term PM exposure in areas with high pollution levels.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100656"},"PeriodicalIF":5.4,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Qualitative and quantitative investigations of Cr (VI) uptake by amorphous nanoparticulate ferrites doped with organic chelating agents","authors":"Cristina Giorgiana Coromelci ,&nbsp;Andreea Elena Maftei ,&nbsp;Maria Ignat ,&nbsp;Loredana Brinza","doi":"10.1016/j.hazadv.2025.100647","DOIUrl":"10.1016/j.hazadv.2025.100647","url":null,"abstract":"<div><div>Current research focuses on the potential application of amorphous iron oxyhydroxides, specifically ferrihydrite (FHY) coprecipitated with and without ethylenediaminetetraacetic acid and ethylenediamine-N, N′-disuccinic acid as complexing agents, for the removal of chromium from aqous solutions. The Electron Probe Microanalysis, X-ray diffraction, SEM and TEM Microscopy, N₂ sorption/desorption, and FT-IR Spectroscopy allowed the assessment of the composition, mineralogy, crystallinity, morphology, size, and surface properties of the nanoparticulated samples. The incorporation of chelating agents resulted in differences in nanoparticle morphology, amorphous characteristics, and surface properties, but did not affect the Cr uptake by adsorption. Kinetic results showed fast (1 hour) Cr uptake capacity that increased with pH decrease and rising Cr concentration, approaching saturation at initial Cr concentrations exceeding 100 mg/L. Isothermal studies showed maximum uptake capacities of FHY of 37.79 mg Cr/g _FHY and the best fit to SIPS model indicates that Cr is chemically bound as mono and multiple layers at plain ferrites surface and under light acidic pH. Reuse tests revealed FHY capability of sustaining up to five cycles of adsorption and desorption, and possibly more. This underscores the potential of FHY as a promising adsorbent for the removal of Cr /at contaminated sites. Geochemical modelling was conducted to (i) assess the speciation of Cr (VI) in the solution and (ii) allow comparison of the theoretically simulated adsorption process with the experimentally obtained results. They indicate Cr species available to bind at varying pH and concentrations values, and that no Cr self-precipitation occurred within tested conditions. Interestingly, the adsorption models that were used to best simulate Cr uptake by FHY, did overestimate the experimental results. Hence, there is still a need to improve geochemical modelling software to simulate processes that occur in real settings.</div></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":"18 ","pages":"Article 100647"},"PeriodicalIF":5.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}