AI Article Synopsis
- - A new composite material made from pyrazole-based chitosan Schiff base was created by incorporating FeO-MoS nanoparticles, and it was characterized using techniques like XRD, SEM, FTIR, EDS, and TGA.
- - The material effectively adsorbed metal ions from water, achieving maximum capacities of 200.00 mg/g for chromium (Cr(VI)) and 125.00 mg/g for copper (Cu(II)).
- - The adsorption process was determined to follow pseudo second order kinetics and the Langmuir model, indicating a spontaneous and endothermic reaction, with successful reusability demonstrated using stripping solutions.
Article Abstract
In the present work a novel pyrazole based chitosan Schiff base material was prepared using 5-azido-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde and functionalized using FeO-MoS, where the nanoparticles get embedded within the gel matrix. The composite material was characterized using various techniques such as XRD, SEM, FTIR, EDS and TGA. The adsorbent material was analysed for the adsorptive take up process from the aqueous solutions of metal ion concentration ranging 20-100 mgL. The maximum adsorption capacity obtained for the material was 200.00 and 125.00 mg/g for Cr(VI) and Cu(II) respectively. Adsorptive mechanism was found to have pseudo second order kinetics and the adsorption isotherm followed Langmuir adsorption model following the monolayer adsorptive process. Further the evaluated thermodynamic parameter showed the adsorption process to be spontaneous and endothermic in nature. Reusability of the composite material was achieved using suitable stripping solutions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ijbiomac.2023.125976 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The role of photooxidation and organic matter in Cr(III) and Cr(VI) interactions with poly(lactic acid) microplastics in aqueous solution.
Sci Total Environ
January 2025
Department of Chemistry, Physics, Environmental and Soil Sciences, University of Lleida - AGROTECNIO-CERCA Center, Rovira Roure 191, 25198 Lleida, Spain.
There is limited research on the influence of environmental variables on the interactions of biodegradable microplastics with chromium. This study reports the results of adsorption experiments with Cr and poly(lactic acid) (PLA) in synthetic aqueous solutions. It addresses the influence of the initial oxidation state, Cr(III) or Cr(VI), the effects of UV irradiation and the presence of organic matter.
View Article and Find Full Text PDFDirect electrochemical sensing of ampicillin in aqueous media by a ruthenium oxide electrode decorated with a molecularly imprinted polymer.
Talanta
January 2025
Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia. Electronic address:
Ampicillin (AMP) ranks third among the top ten most frequently sold antibiotic combinations globally, raising concerns due to its extensive use. Improper disposal practices in agriculture, aquaculture, and healthcare have led to environmental contamination of water sources with elevated AMP levels. Current methods for detecting such contamination are costly, require sophisticated equipment, and depend on skilled personnel and unstable natural receptors.
View Article and Find Full Text PDFCO-driven ion exchange for ammonium recovery from source-separated urine.
Water Res
January 2025
Georgia Tech Shenzhen Institute (GTSI), Tianjin University, Shenzhen 518067, China. Electronic address:
Nitrogen recovery from urine and CO utilization are both vital for achieving a circular economy and mitigating climate change. Divided engineering solutions have been proposed to address either problem, but there is still a lack of integrated technologies to simultaneously tackle the two tasks. We demonstrated CO-driven ion exchange for nitrogen recovery (CIXNR) from urine and evaluated the process in Malawi.
View Article and Find Full Text PDFSingle-Atom Iridium-doped Carbon Dots Nanozyme with High Peroxidase-Like Activity as Colorimetric Sensors for Multimodal Detection of Mercury Ions.
Small
January 2025
Chongqing Key Laboratory of Prevention and Treatment for Occupational Diseases and Poisoning, First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing, 400060, China.
Nanozyme-based colorimetric sensors are promising approaches for environmental monitoring, food safety, and medical diagnostics. However, developing novel nanozymes that exhibit high catalytic activity, good dispersion in aqueous solution, high sensitivity, selectivity, and stability is challenging. In this study, for the first time, single-atom iridium-doped carbon dot nanozymes (SA Ir-CDs) are synthesized via a simple in situ pyrolysis process.
View Article and Find Full Text PDFIdentification of dissipation pathways for pharmaceuticals in soils - a modelling approach.
Environ Sci Process Impacts
January 2025
Eberhard Karls University of Tübingen, Department of Geosciences, Schnarrenbergstraße 94-96, 72076 Tübingen, Germany.
Concentrations of pollutants like pharmaceuticals in soils typically decrease over time, though it often remains unclear whether this dissipation is caused by the transformation of the pollutant or a decreasing extractability. We developed a mathematical model that (1) explores the plausibility of different dissipation pathways, and (2) allows the quantification of concentration differences between aqueous soil extracts and soil solution. The model considers soil particles as uniform spheres, kinetic sorption towards an equilibrium (Freundlich model), and two dissipation pathways, irreversible transformation and mineralization (following 1 order kinetics) as well as the formation of non-extractable residues intraparticle diffusion.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!