Removal of Basic Red 5 on Calcined Kaolinite – Characterization and Adsorption Kinetics
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Sultan Alam
, Noor-ul Amin , F. K. Bangash und Mohammad Ali
Abstract
Indigenous kaolin was collected from Swat district and then activated. The samples were characterized by BET surface area, FTIR, XRD, SEM, EDS, TGA/DTA, zeta potential and particle size analysis. Adsorption of basic red 5 on each sample was studied by adsorption kinetics at 20 °C, 30 °C and 40 °C. The residual concentration of the dye was determined by using UV–Vis spectrophotometer. The removal of basic red 5 from water solution was studied with respect to dye concentrations and equilibration time. Adsorption kinetics on kaolinite surface were analyzed by using parabolic diffusion, Elovich and Bangham models. Thermodynamic parameters like ΔE#, ΔH# and ΔS# were calculated from the adsorption kinetics data. The results show that the adsorption is a spontaneous and endothermic process. The negative value of entropy shows that the dye molecules take a proper position on the surface.
Kurzfassung
Kaolin wurde im heimlischen Swat-Distrit gesammelt und dann aktiviert. Die Proben wurden mittels der Bestimmung des BET-Oberflächenbereiches, der FTIR-Spektroskopie, der energiedispersiven Röntgenspektroskopie (EDS), der Röntgendiffraktion (XRD), der Rasterelektronenmikroskopie (REM), der thermischen Analyse (TGA/DTA), dem Zeta-Potential und der Partieklgrößenanalyse charakterisiert. Die Adsorption von Basic Red 5 wurde bei 20, 30 nd 40 °C über die Messung der kinetischen Adsorption untersucht. Die Restkonzentration des Basic Red 5 wurde mit einem UV–Vis-Spektrophotometer bestimmt. Die Entfernung von Basic Red 5 aus wässriger Lösung wurde in Abhängigkeit von der Farbstoffkonzentration und der Zeit für die Gleichgewichtseinstellung untersucht. Die Adsorptionskinetik an der Kaolinitoberfläche wurde mit der parabolischen Diffusion, der Elovich- und Bangham-Modelle analysiert. Aus den Daten der kinetischen Adsorption wurden thermodynamische Parameter wie ΔE#, ΔH# and ΔS# berechnet. Die Ergebnisse zeigen, dass die Adsorption ein spontaner und endothermer Vorgang ist. Die negative Entropie zeigt, dass die Farbstoffmoleküle einen ordentlichen Anteil an der Oberfläche einnehmen.
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© 2014, Carl Hanser Publisher, Munich
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Enhancing the Surface Properties of Some Amine Alginate Salts with Cationic Surfactant
- Method Development
- Transmission Measurements as Tool to Study Phase Transitions of Liquid Mixtures
- Novel Surfactant
- Synthesis and Surface Active Properties of Dimeric Gemini Sulfonate Surfactants
- Physical Chemistry
- Efficiency Boosting in Technical Grade Sugar Surfactant Based Microemulsions Using Pluronics
- Impact of Surfactants on the Performance of “Green Additives” as Calcium Carbonate Inhibitors for Aqueous Systems
- Study of Surfactant (Benzyldimethylhexadecylammonium Chloride) Effect on Selected Properties of Hydrogels
- Physicochemical Properties of Quaternary Ammonium Surfactants with Hydroxyethyl Groups
- Environmental Chemistry
- Removal of Basic Red 5 on Calcined Kaolinite – Characterization and Adsorption Kinetics
- Conference and Meeting Report
- Emulsions and Dispersions, Trends in Detergency, Cleaning and Hygiene, Sustainability and Product Safety, Forum for Innovations
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Abstracts
- Abstracts
- Application
- Enhancing the Surface Properties of Some Amine Alginate Salts with Cationic Surfactant
- Method Development
- Transmission Measurements as Tool to Study Phase Transitions of Liquid Mixtures
- Novel Surfactant
- Synthesis and Surface Active Properties of Dimeric Gemini Sulfonate Surfactants
- Physical Chemistry
- Efficiency Boosting in Technical Grade Sugar Surfactant Based Microemulsions Using Pluronics
- Impact of Surfactants on the Performance of “Green Additives” as Calcium Carbonate Inhibitors for Aqueous Systems
- Study of Surfactant (Benzyldimethylhexadecylammonium Chloride) Effect on Selected Properties of Hydrogels
- Physicochemical Properties of Quaternary Ammonium Surfactants with Hydroxyethyl Groups
- Environmental Chemistry
- Removal of Basic Red 5 on Calcined Kaolinite – Characterization and Adsorption Kinetics
- Conference and Meeting Report
- Emulsions and Dispersions, Trends in Detergency, Cleaning and Hygiene, Sustainability and Product Safety, Forum for Innovations