Investigation of magnetic silica nanocomposite immobilized Pseudomonas fluorescens as a biosorbent for the effective sequestration of Rhodamine B from aqueous systems
| Autor: | P. Tsopbou Ngueagni, A. Abilarasu, Muthusamy Govarthanan, G. Janet Joshiba, P. Senthil Kumar, Femina Carolin C |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Langmuir
Calcium alginate 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis Pseudomonas fluorescens 010501 environmental sciences Toxicology 01 natural sciences Nanocomposites Rhodamine chemistry.chemical_compound Adsorption Rhodamine B Freundlich equation 0105 earth and related environmental sciences Aqueous solution biology Chemistry Rhodamines Magnetic Phenomena General Medicine Hydrogen-Ion Concentration biology.organism_classification Silicon Dioxide Pollution Kinetics Thermodynamics Water Pollutants Chemical Nuclear chemistry |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 269 |
| ISSN: | 1873-6424 |
| Popis: | In the current research work, a novel eco-friendly Fe3O4@SiO2 nanocomposite immobilized with Pseudomonas fluorescens biomass in calcium alginate beads (MSAB) was used as biosorbent for the elimination of hazardous Rhodamine B dye from aqueous system. The FTIR, XRD and SEM results showed that the MSAB possessed excellent surface properties for the effective sequestration of Rhodamine B. The batch adsorption results concluded that the adsorption of Rhodamine B using MSAB is highly influenced by the parameters such as pH, adsorbent dosage, initial dye concentration and contact time. The equilibrium and kinetics data get best fitted in the Freundlich isotherm and Pseudo first order kinetics for the studied adsorption system. The Langmuir monolayer adsorption capacity was found to be 229.6 mg/g. The thermodynamic studies showed that the adsorption was spontaneous, feasible and exothermic in nature. The adsorption mechanisms are understood using the Intraparticle diffusion and Boyd model. Thus, this Magnetic silica alginate beads (MSAB) containing dead biomass of Pseudomonas fluorescens is considered to be an ideal biosorbent which can be used as an effective tool in treating the industrial dye wastewater treatment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect