Journal ArticleDOI
Optimization of brilliant green biosorption by native and acid-activated watermelon rind as low-cost adsorbent
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In this paper, the removal of textile dye brilliant green (BG) from aqueous solutions by native WR and chemically activated watermelon rind (AWR) was carried out using 1:1 ortho-phosphoric acid.Abstract:
The use of low-cost and eco-friendly adsorbent such as watermelon rind (WR) has been investigated as an ideal alternate for removing dyes from wastewater. This study deals with the removal of textile dye brilliant green (BG) from aqueous solutions by native WR and chemically activated watermelon rind (AWR). Chemical activation of WR was carried out using 1:1 ortho-phosphoric acid. The loading capacity of WR and AWR was found to be 92.6 and 188.6 mg g−1, respectively. The equilibrium data were fit to Langmuir, Freundlich, and Temkin isotherms and found to have better fit to Langmuir isotherm. The sorption of BG onto WR and AWR was rapid and follows pseudo-second-order kinetic model. Thermodynamic parameters including change in free energy (∆G°), enthalpy (∆H°), and entropy (∆S°) are derived and found to be spontaneous and exothermic in nature. These observations suggest that WR can be used as a non-hazardous agro material for removal of BG from aqueous solutions.read more
Citations
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Ultrasonic enhancement of the simultaneous removal of quaternary toxic organic dyes by CuO nanoparticles loaded on activated carbon: Central composite design, kinetic and isotherm study
Somayeh Dashamiri,Mehrorang Ghaedi,Kheibar Dashtian,Mahmood Reza Rahimi,Alireza Goudarzi,Ramin Jannesar +5 more
TL;DR: Copper oxide nanoparticles loaded on activated carbon (CuO-NPs-AC) were prepared and fully analyzed and characterized with FE-SEM, XRD and FT-IR and used for simultaneous ultrasound-assisted adsorption of brilliant green (BG), auramine O (AO), methylene blue (MB) and eosin yellow (EY) dyes.
Journal ArticleDOI
A review on biosorptive removal of dyes and heavy metals from wastewater using watermelon rind as biosorbent
TL;DR: The feasibility of using watermelon rind as a reusable biosorbent has been further proved by the results of desorption studies performed by several researchers as mentioned in this paper, which revealed that pseudo second order kinetic model and Langmuir isotherm model were best suited for describing WMR based biosorption of dyes and heavy metals.
Journal ArticleDOI
Application of random forest, radial basis function neural networks and central composite design for modeling and/or optimization of the ultrasonic assisted adsorption of brilliant green on ZnS-NP-AC.
TL;DR: Two machine learning approach (i.e. RBF network, RF and polynomial) model was developed and evaluated against a quadratic response surface model to predict the maximum removal efficiency of brilliant green from aqueous media and exhibit a better performance in comparison to classical statistical model for both dyes.
Journal ArticleDOI
Surface molecularly imprinted polymer on magnetic multi-walled carbon nanotubes for selective recognition and preconcentration of metformin in biological fluids prior to its sensitive chemiluminescence determination: Central composite design optimization.
TL;DR: The designed method was successfully applied to the extraction and determination of metformin in biological fluids and water samples and was found to be best fitted with the pseudo-second-order model.
References
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TL;DR: In this paper, a diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) method was developed to measure the degree of esterification (DE) of commercial pectin samples.
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