TAILIEUCHUNG - Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions

The present work was carried out to evaluate the removal of Coomassie brilliant blue dye by adsorption onto a magnetized activated carbon nanocomposite (MNSA) prepared from Nigella sativa L. (NS) waste. Different techniques, including infrared spectroscopy, scanning electron microscopy, and nitrogen adsorption/desorption, were used to characterize MNSA to investigate its adsorption properties. Adsorption experiments were carried out by simultaneously optimizing four variables that usually present a strong effect in adsorption studies. A full 24 factorial design with 3 central points was used. The four independent variables were the initial pH of the dye solution (pH), the initial dye concentration (Co), the adsorbent mass (m), and the contact time (t). The sorption capacity (q) of the adsorbent and the percentage of dye removal (% Rem) from an aqueous solution were used as the responses of the factorial design. The results indicated that pH, Co, and m were essential factors for the overall optimization of both responses (q and % Rem) and that several interactions of two, three and four factors occurred. Based on the design of the experiments (DOE), the optimized conditions for adsorption were pH = , Co = mg L1 , m = mg, and t = h. Under these conditions, both responses, q and % Rem, were maximized, with a desirability of . The findings of this study could be useful for industrial wastewater treatment systems. | Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions

• Hoá học
• Nigella sativa L
• waste
• Coomassie brilliant blue
• Central composite design
• Coomassie brilliant blue dye
• Magnetized activated carbon nanocomposite
• Sowing dates
• Fertilizer doses
• Semiarid region
• Nigella (Nigella sativa L )
• Semi arid conditions
• Plant density
• Plant density on growth
• Quality of Nigella sativa L
• Coastal humid tropic
• Winter growing season
• Socio economic scenario
• Farming community
• Plant geometry on growth
• Yield and quality
• Black cumin
• Nigella sativa
• Nitrate reductase
• Seed oil content
• Seed protein content
• Seed yield
• Terminalia chebula
• Salvia officinalis L
• Calamintha incana
• Thymus vulgaris L
• Matricaria chamomilla
• Antioxidant activity
• Agricultural science
• Seed germination Root growth
• Root tip cells
• Mitotic activity
• Chromosomal aberrations
• Dry mass
• Carbonic anhydrase
• Leaf area
• Net photosynthetic rate
• Stomatal conductance
• Seed yield
• Genetic relatedness
• Genotype specific bands
• Random priming
• Quantitative traits loci
• Sequence characterized amplified region
• Amplified fragment length polymorphism
• Organic Manures
• Bio digester liquid organic manure
• Black cumin fixed oil
• Volatile oil