Investigation by UV spectrophotometry of removal of para-nitrophenol on raney alloy

Sismanoglu, Sedef

doi:10.1016/j.molstruc.2018.03.026

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…Homogeneous dispersions of MWCNTs were prepared by placing the dispersions in an ultrasonic liquid processor (VCX-750, Sonics-USA) for 5 h prior to the analysis. The buffer solutions of 0.1M HCl and 0.1 M NaOH were used to prepare dispersions of MWCNTs with different pH values (2)(3)(4)(5)(6)(7)(8)(9)(10)(11).…”

Section: Materials Characterizationmentioning

confidence: 99%

“…Sips isotherm incorporates the features of both Langmuir and Freundlich isotherm models [31]. The specific equation is given by qe= q max K s C e ns /1+K s C e (9) where K S (L/mg) is the Sips model isotherm constant and n s is heterogeneity constant. The agreement among experimental and theoretical data points after isotherm models curve fitting is shown in Figure S6.…”

Section: Equilibrium Isotherm Modellingmentioning

confidence: 99%

“…Conventional methods to eradicate coloured compounds and organic contaminants from polluted streams include coagulation, flocculation, reverse osmosis, photo irradiation, ozonation process, and carbon adsorption [8][9][10]. Among these processes, the adsorption technique has widely practised due to its effectiveness, simplicity, high efficiency, and availability of a wide range of materials [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Adsorptive performance of MWCNTs for simultaneous cationic and anionic dyes removal; kinetics, thermodynamics, and isotherm study

et al. 2021

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Disposal of contaminated wastewater causes many serious problems especially when it gets mixed with the ground and seawater. It is, therefore, important to apply any remedial action to eradicate dangerous pollutants from the aqueous effluents and to avoid exposure of this wastewater to aquatic life. The research results discussed herein deal with the removal of Rhodamine B (RhB) and Congo Red (CR) dye from wastewater by using multi-walled carbon nanotubes (MWCNTs) as an adsorbent. Different factors like solid dosage, initial pH and concentration, time, and temperature were studied to understand the behavior and mechanism of adsorption. The maximum adsorption capacity in case of a single component system was found to be 302 mg/g and 300 mg/g for Congo Red and Rhodamine B, respectively. Moreover, the mechanism of adsorption was best described by a pseudo-second-order kinetic model. Thermodynamic parameters showed that adsorption of CR and RhB was exothermic when these were removed from a single dye system. However, the overall process became endothermic for concurrent removal of both dyes from the solution. The research results showed that the MWCNTs could successfully be utilized to remove the dye from the industrial wastewater.

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