Ultrasound-assisted removal of Al³⁺ ions and Alizarin red S by activated carbon engrafted with Ag nanoparticles: central composite design and genetic algorithm optimization

Abstract

In this work, activated carbon engrafted with Ag nanoparticles (Ag-NPs-AC) was prepared and applied for ultrasonic assisted simultaneous removal of aluminum (Al 3+ ) ions and Alizarin red S (ARS) dye from aqueous medium. The physicochemical properties of Ag-NPs-AC were determined by different techniques such as SEM and FTIR. Effects of various operating parameters on the extent of adsorption were investigated. The optimum of condition was determined in order to achieve maximum removal percentage from the binary mixture. It was observed that the maximum performance for both the species was achieved at pH of 6. The influence of different variables such as concentration of initial Al 3+ (mg L -1 ) ions, ARS (mg L -1 ), adsorbent mass (mg) and sonication time (s) were studied using central composite design (CCD) combined with desirability function approach (DFA) and genetic algorithm (GA). The isotherm models for the adsorption process were evaluated and the equilibrium data accurately described by the Langmuir model with maximum monolayer adsorption capacity for Al 3+ ions and ARS of 222.2 and 232.6 mg g -1 , respectively.

Highly efficient simultaneous ultrasonic assisted adsorption of brilliant green and eosin B onto ZnS nanoparticles loaded activated carbon: Artificial neural network modeling and central composite design optimization

“…In later stage, sample was immediately centrifuged for 5 min at 3500-4000 rpm and BG and EB final concentration was quantified by UV-Vis spectrophotometer according to calibration curve obtained at the similar condition based on derivative spectrometry. Efficiency of dyes removal (R %) and adsorption capacity of adsorbent (Qe) was calculated by the method reported in our previous works [25,26].…”

“…In this section, central composite method using STATICTICA 10.0.228.8 software composed of 2f factorial points, 2f axial points (f is the number of factors) and N C central points and the test results for the response variables response were recorded [25,26]:…”

“…represents the graphical interpretation of the interactions of variable and determination of the best operating process conditions by application of three-dimensional (3D) plots [25,26].…”

Synthesis of carbon nanotube‐based nanocomposite and application for wastewater treatment by ultrasonicated adsorption process

“…Experimental design generally is appropriate for simultaneous optimization of variables to improve characteristic performance with significant reduction the number of runs and minimization of error . RSM is an appropriate and acceptable optimization approach that is classified with Box–Behnken design, Plackett–Burman design and CCD . CCD as a widely applicable optimization model permits determination of the coefficients in a mathematical form and predicts the response and validation of the model …”

Modification of platinum nanoparticles loaded on activated carbon and activated carbon with a new chelating agent for solid phase extraction of some metal ions

“…The instrumental techniques including flame atomic absorption spectrometry (AAS), graphite furnace atomic absorption spectrometry (GFAAS), inductively coupled plasma-optical emission spectrometry, inductively coupled plasma-mass spectrometry, electroanalytical techniques and X-ray fluorescence spectrometry have been used for the determination of heavy metal ions traces [9][10][11][12][13][14][15].…”