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Showing 1 to 12 of 12 for “"Langmuir adsorption isotherm"”.
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REMEDIATION OF TEXTILE AND MINING INFLUENCED EFFLUENTS USING NOVEL HETEROGENEOUS PAN CATALYST AND MODIFIED PAN MESH
… is favourable and can be best described by a Langmuir adsorption isotherm model.The modelpredicts a maximum adsorption capacity for the PAN catalyst as 0.68 mg of RO16 per gram of catalyst. A direct relationship between pH, temperature and iron leaching was established. The leached iron has no …
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Thermally responsive polymers and their applications
… an imidazole comomoer and examined copper ion adsorption by the swollen (room temperature) and shrunken gels (60⁰C). The data analysis using a Langmuir adsorption isotherm indicates that the imidazole groups form 2:1 and 4:1 complexes with a copper ion in the swollen and shrunken gels, …
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Molecular recognition : conformational memory and the macroscopic functional character of heteropolymer gels
… gels be used as protein 'mimics'. Multi-contact adsorption is engineered as a measure of gel function. Adsorbers within the gel's polymer network cluster to form an active site for molecular capture. A gel's conformation impacts both protein folding, and the testing of the polymer freezing …
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Advancing prostate cancer therapy: synthesis and characterization of docetaxel-loaded magnetic iron oxide nanoparticles for controlled drug release.
… confirmed that Fe3O4 NPs were synthesized. The Langmuir adsorption isotherm model (R2 =0.9947) was favoured over the Freundlich (R2 =0.9441) and Temkin (R2=0.8218). Drug release was faster at a potential of Hydrogen (pH) of 4.8 compared to pH 6.0, 7.0, and pH 7.45 with drug release percentage of …
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Optimization of biosorption process using cucumis melo rind for the removal of Fe, Mn and Pb ions from groundwater
… the biosorption of the metal ions. The Langmuir, Freundlich and BET isotherm models were used to predict the behavior metal binding while Langergren Pseudo-first and Pseudo-second order were used to study the kinetics aspects. The equilibrium data for all metals were best fit to the …
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Performance Evaluation of Condiments as Environmentally Friendly Corrosion Inhibitors for Amine-Based Carbon Dioxide Absorption Process
… by undergoing endothermic physical and chemical adsorption with the Langmuir adsorption isotherm. Sulfur, nitrogen, phosphorus functional groups were the primary contributors to the inhibition effectiveness. Unlike these four condiments, the powder of turmeric was not promising as it yielded …
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Phosphorus adsorption by selected clay minerals
… the theoretical effect of certain cations on the adsorption of phosphorus by clay minerals. The various diffuse double layer and Donnan equilibrium theories were used in this theoretical treatment. Three standard clay minerals, a kaolinite, an illite and a montmorillonite were used in the …
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Synthesis of 6-Substitutedchromone-2- Carboxamide derivatives as corrosion inhibitors for metals in acidic medium
… showing the highest %IE (97.44%). The Langmuir adsorption isotherm was found to be the best-fit for all the corrosion inhibitors for all metal surfaces. All the synthesized compounds reduced the corrosion rate of three metals in the HCl solution. These corrosion inhibitors also …
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Phase diagram for the co-adsorption of O and OH on Pt(100) and Pt(111) as determined by DFT
The Langmuir adsorption isotherm is often used to model molecular adsorption on catalyst surfaces. The model assumes that adsorption occurs on a homogenous energy surface at specific localized sites with no lateral interactions between adsorbents. This simplification causes some concerns when …
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Fabrication of Biomass-Polymeric Adsorbent for the Removal of Selected Metal Species, Nutrients and Pathogens in Aqueous Solutions
… and initial concentration. The respective adsorption kinetics processes by the GFP, diatom biomass, GFP/diatom, and pPD/GFP/diatom sorbent materials on Cr6+, Cd2+, and PO43- ions revealed that physisorption and chemisorption mechanisms were responsible for the adsorption processes as well …
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Synthesis, Characterization and Corrosion Inhibition Investigation of substituted triazines on aluminium and mild steel in 1M HCl: Experimental and Theoretical approach
… (DPT), and 87.95% (DNT) at 303 K. The inhibitor adsorption on the Al and MS surface for all the inhibitors obeyed the Langmuir adsorption isotherm. The adsorption isotherm indicates the reaction is spontaneous, and inhibitor molecules adsorb onto Al and MS surface through weak force …
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Adsorption of phloretin to lipid layers
… allowed a critical examination of the Langmuir adsorption model that has been postulated for the interaction between phloretin and lipid layers. Surface pressure versus area per lipid molecule isotherms and surface (dipole) potential change versus area per lipid molecule isotherms, …