Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
This study explores the development and analysis of an eco-friendly one-step process for attaching iron oxide magnetic nanoparticles (MNPs) to a type of hyperbranched polyester commercially known as the "Boltorn H40" polymer. The research focuses on the application of this technique for extracting trace amounts of chromium ions [Cr(III) and Cr(VI)] with concentrations of less than 1 ppm. The elimination of Cr(VI) is of significant concern due to its severe toxicity and detrimental environmental impact. A systematic evaluation was conducted to investigate the influence of operational parameters, including adsorbent dosage, contact time, pH, and initial chromium concentration, on removal efficiency using synthetic aqueous solution. The adsorption behavior of the innovative BH40@FeO MNPs nanocomposite was found to follow both the Langmuir model and pseudo-second-order kinetics. For trace-level concentrations, the material achieved removal efficiencies of 99% for Cr(VI) and 98% for Cr(III), with Cr(VI) exhibiting faster and more effective adsorption. A UV-vis spectroscopy procedure was developed to enable real-time oxidation state-specific monitoring of chromium ions in aqueous systems. This method allows for the direct detection and quantification of Cr(VI) even in the presence of Cr(III), making it suitable for analyzing binary systems. This new approach provides a practical way to distinguish between chromium species in water, providing more insight into competitive adsorption mechanisms. Durability tests showed that the nanocomposite retained over 90% of its initial adsorption capacity even after four regeneration cycles, confirming its excellent reusability. This study presents a highly efficient, durable, and scalable material for removing trace-level chromium species, offering strong potential for real-world environmental remediation applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.langmuir.5c01223 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Soil drivers of fungal, bacterial and plant diversity in contaminated Southern Californian sites: Implications for dryland bioremediation.
Sci Total Environ
September 2025
University of California Riverside, Department of Environmental Sciences and Environmental Toxicology Graduate Program, Riverside, CA, USA.
This exploratory study surveyed seven contaminated brownfields and Superfund sites in Southern California to identify locally adapted species tolerant of mixed organic and metal contamination under arid and semi-arid conditions. Five novel native plants, including Brickellia californica, Baccharis salicifolia, Baccharis sarothroides, Eriogonum fasciculatum, and Heterotheca grandiflora were identified as hyperaccumulators of copper (Cu), alongside a non-native species from the Asteraceae family, Helminthotheca echioides. Additional metal-accumulating plants (including native plants) for lead (Pb), chromium (Cr), arsenic (As), and nickel (Ni) were identified, and warrant further evaluation for their phytoremediation potential.
View Article and Find Full Text PDFRevealing the Neglected Role of Passivation Layers of Current Collectors for Solid-State Anode-Free Batteries.
Adv Mater
September 2025
Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada.
Anode-free sulfide-based all-solid-state lithium metal batteries (ASSLMBs), which eliminate the need for a lithium metal anode during fabrication, offer superior energy density, enhanced safety, and simplified manufacturing. Their performance is largely influenced by the interfacial properties of the current collectors. Although previous studies have investigated the degradation of sulfide electrolytes on commonly used copper (Cu) and stainless steel (SS) current collectors, the impact of spontaneously formed surface oxides, such as copper oxide (CuO/CuO) and chromium oxide (CrO), on interfacial stability remains underexplored.
View Article and Find Full Text PDFIntegrating hematological profile and biomarker analysis for metals and metalloids ecotoxicological assessment on Wallago catfish and Indian carp health in Head Siphon, Mailsi, Pakistan.
Biometals
September 2025
Fish Research Centre, Faculty of Environmental Agricultural Sciences, Arish University, El-Arish, Egypt.
Bioaccumulation of metals and metalloids in marine environments poses a significant risk to both human and aquatic health, with seasonal fluctuations substantially influencing its dynamics and magnitude. This study investigated the impact of metals and metalloids exposure on the health of Wallago attu (Wallago catfish) and Catla catla (Indian carp) inhabiting the Head Siphon, Mailsi, Pakistan. This study involved the seasonal (May 2022, October 2022, April 2023) assessment of physicochemical properties and the concentrations of several metals and metalloids-copper (Cu), chromium (Cr), arsenic (As), cadmium (Cd), nickel (Ni), zinc (Zn), and iron (Fe)-in water samples.
View Article and Find Full Text PDFLiquid-phase microextraction method for the separation of hexavalent and total chromium in environmental water samples with spectrophotometric detection.
Anal Methods
September 2025
Giresun University, Faculty of Arts and Sciences, Department of Chemistry, 28200 Giresun, Turkey.
Metal pollution, particularly chromium, in water and food samples is a critical issue due to its transfer to the human body through the food chain and its threat to human health. Among the chromium species that can be found in water samples, chromates are classified as toxic by scientific authorities. Spectroscopic instruments have limitations in metal speciation analysis, and there is a need for suitable methods that allow chromium speciation.
View Article and Find Full Text PDFChallenges in defining an efficient cleansing protocol against mono- and multi-species biofilms on a cobalt-chromium alloy surface.
Dent Med Probl
September 2025
Department of Dental Materials and Prosthodontics, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil.
Background: Effective cleaning protocols are crucial for controlling biofilm formation on oral prostheses and preserving the oral health of patients relying on removable partial dentures (RPDs).
Objectives: The present study aimed to investigate the antibiofilm efficacy of 4 cleansing protocols on a cobalt-chromium (Co-Cr) alloy surface, which is commonly used as the base-metal framework material in dental prosthodontics.
Material And Methods: Cobalt-chromium specimens were contaminated with isolated strains of Candida albicans, Candida glabrata, Staphylococcus aureus, and Streptococcus mutans to form monospecies biofilms.