Journal: Journal of Hazardous Materials

Abbreviation

Publisher

Elsevier

Journal Volumes

ISSN

0304-3894
1873-3336

Description

Filters

Reset filters

Search Results

Publications 1 - 10 of 48
  • The combined use of liming and Sarcocornia fruticosa development for phytomanagement of salt marsh soils polluted by mine wastes
    Item type: Journal Article
    Nazaret Gonzalez-Alcaraz, Maria; Miguel Conesa, Hector; del Carmen Tercero, Maria; et al. (2011)
    Journal of Hazardous Materials
  • Remediation of soils contaminated with particulate depleted uranium by multi stage chemical extraction
    Item type: Journal Article
    Crean, Daniel E.; Livens, Francis R.; Sajih, Mustafa; et al. (2013)
    Journal of Hazardous Materials
    Contamination of soils with depleted uranium (DU) from munitions firing occurs in conflict zones and at test firing sites. This study reports the development of a chemical extraction methodology for remediation of soils contaminated with particulate DU. Uranium phases in soils from two sites at a UK firing range, MOD Eskmeals, were characterised by electron microscopy and sequential extraction. Uranium rich particles with characteristic spherical morphologies were observed in soils, consistent with other instances of DU munitions contamination. Batch extraction efficiencies for aqueous ammonium bicarbonate (42–50% total DU extracted), citric acid (30–42% total DU) and sulphuric acid (13–19% total DU) were evaluated. Characterisation of residues from bicarbonate-treated soils by synchrotron microfocus X-ray diffraction and X-ray absorption spectroscopy revealed partially leached U(IV)-oxide particles and some secondary uranyl-carbonate phases. Based on these data, a multi-stage extraction scheme was developed utilising leaching in ammonium bicarbonate followed by citric acid to dissolve secondary carbonate species. Site specific U extraction was improved to 68–87% total U by the application of this methodology, potentially providing a route to efficient DU decontamination using low cost, environmentally compatible reagents.
  • Simple box model for dense-gas dispersion in a straightsloping channel
    Item type: Journal Article
    Kunsch, Jean-Paul; Webber, David M. (2000)
    Journal of Hazardous Materials
  • Degradation of naproxen by UV, VUV photolysis and their combination
    Item type: Journal Article
    Arany, Eszter; Szabo, Rita Katalin; Apati, Laszlo; et al. (2013)
    Journal of Hazardous Materials
  • Distribution of geogenic arsenic in European topsoil and potential concerns for food safety
    Item type: Journal Article
    Li, Kai-Yun; Covatti , Gustavo; Podgorski , Joel; et al. (2025)
    Journal of Hazardous Materials
    Arsenic (As) is naturally present in trace amounts in most soils and poses a public health risk when elevated in topsoil due to potential accumulation in agricultural products. Europe has several regions with natural As enrichment in soils, but since soil analyses are limited to individual soil samples, information on the spatial distribution has been lacking. This study uses expert-based machine learning to create a high-resolution map of As exceeding 20 mg/kg in European topsoil based on ∼4100 data points of the Geochemical Mapping of Agricultural and Grazing Land Soil in Europe (GEMAS) dataset and 15 environmental variables. The resulting pan-European probability map delineates areas with high soil arsenic concentrations due to natural processes. The study finds that 11.7 % of grassland and 3.9 % of cropland in Europe have arsenic levels above this threshold, with France, Spain, the Western Balkans, and mountain areas most affected. Commonly grown crops in these areas include wheat, maize, rapeseed, and fodder crops. Our research links elevated arsenic levels to areas with low soil water erosion. SHapley Additive exPlanations (SHAP) analysis was used to identify key predictors, which may also be relevant in other regions globally. The high-resolution As map offers valuable insights for agricultural and health professionals and policy-makers.
  • Comment on “Speciation and fate of toxic cadmium in contaminated paddy soils and rice using XANES/EXAFS spectroscopy”
    Item type: Other Journal Item
    Sarret, Géraldine; Blommaert, Hester; Wiggenhauser, Matthias (2021)
    Journal of Hazardous Materials
  • Characterization of dynamic plastisphere and their underlying effects on the aging of biodegradable and traditional plastics in freshwater ecosystems
    Item type: Journal Article
    Li, Wanyi; Miao, Lingzhan; Adyel, Tanveer M.; et al. (2023)
    Journal of Hazardous Materials
    Recently, biodegradable plastics (BPs) are emerging as a sustainable alternative to traditional plastics. When released into an aquatic environment, the biodegradable performance of BPs is influenced by biochemical processes, especially the developed plastisphere. However, studies addressing the biodegrading capacity of BPs and traditional plastics within the plastisphere are still limited. Here, we investigated plastisphere community variations and their capacity to biodegrade polyethylene terephthalate (PET) and starch-based plastics (SBP) for four time periods (15, 30, 45, and 80 days) in three freshwaters. Unexpectedly, there is no significant difference in the microbial communities and network structure of the plastisphere between SBP and PET. Moreover, SBP tended to age rapidly at the early stage (0–15 days), while the aging degree of SBP and PET did not display an obvious difference at 80 days. Partial least squares path modeling suggested that plastic aging was mainly dominated by keystone taxa of network and aquatic environmental factors. These results suggest that the aging rate of commercial BPs may not be as fast as we imagine in freshwaters (SBP ≈ PET), and the environmental behaviors of BPs in the aquatic environment should be paid more attention to.
  • Investigation of entrainment and thermal properties of a cryogenic dense-gas cloud using optical measurement techniques
    Item type: Journal Article
    Kunsch, J.P.; Rösgen, Thomas (2006)
    Journal of Hazardous Materials
  • Hazard assessment of hexagonal boron nitride and hexagonal boron nitride reinforced thermoplastic polyurethane composites using human skin and lung cells
    Item type: Journal Article
    Carlin, Michela; Kaur, Jasreen; Ciobanu, Dinu Zinovie; et al. (2024)
    Journal of Hazardous Materials
    Hexagonal boron nitride (hBN) is an emerging two-dimensional material attracting considerable attention in the industrial sector given its innovative physicochemical properties. Potential risks are associated mainly with occupational exposure where inhalation and skin contact are the most relevant exposure routes for workers. Here we aimed at characterizing the effects induced by composites of thermoplastic polyurethane (TPU) and hBN, using immortalized HaCaT skin keratinocytes and BEAS-2B bronchial epithelial cells. The composite was abraded using a Taber® rotary abraser and abraded TPU and TPU-hBN were also subjected to photo-Fenton-mediated degradation mimicking potential weathering across the product life cycle. Cells were exposed to the materials for 24 h (acute exposure) or twice per week for 4 weeks (chronic exposure) and evaluated with respect to material internalization, cytotoxicity, and proinflammatory cytokine secretion. Additionally, comprehensive mass spectrometry-based proteomics and metabolomics (secretomics) analyses were performed. Overall, despite evidence of cellular uptake of the material, no significant cellular and/or protein expression profiles alterations were observed after acute or chronic exposure of HaCaT or BEAS-2B cells, identifying only few pro-inflammatory proteins. Similar results were obtained for the degraded materials. These results support the determination of hazard profiles associated with cutaneous and pulmonary hBN-reinforced polymer composites exposure.
  • The plastisphere microbiome in alpine soils alters the microbial genetic potential for plastic degradation and biogeochemical cycling
    Item type: Journal Article
    Rüthi, Joel; Rast, Basil M.; Qi, Weihong; et al. (2023)
    Journal of Hazardous Materials
    Plastic is exceedingly abundant in soils, but little is known about its ecological consequences for soil microbiome functioning. Here we report the impacts of polyethylene and biodegradable Ecovio and BI-OPL plastic films buried in alpine soils for 5 months on the genetic potential of the soil microbiome using shotgun metagenomics. The microbiome was more affected by Ecovio and BI-OPL than by polyethylene. Fungi, α- and β-Proteobacteria dominated on the biodegradable films. Ecovio and BI-OPL showed signs of degradation after the incubation, whereas polyethylene did not. Genes involved in cellular processes and signaling (intracellular trafficking, secretion, vesicular transport), as well as metabolism (carbohydrate, lipid and secondary metabolism), were enriched in the plastisphere. Several α/β-hydrolase gene families (cutinase_like, polyesterase-lipase-cutinase, carboxylesterase), which encode enzymes essential to plastic degradation, and carbohydrate-active genes involved in lignin and murein degradation increased on Ecovio and BI-OPL films. Enriched nitrogen fixation and organic N degradation and synthesis genes and decreased nitrification genes on Ecovio altered the biogeochemical cycling, leading to higher ammonium concentrations and depletion of nitrite and nitrate in the soil. Our results indicate that plastics affect the alpine soil microbiome and its functions and suggest that the plastisphere has an untapped microbial potential for plastic biodegradation.
Publications 1 - 10 of 48