The Adsorption of Rhodamine B in Water by Modified Zeolites

Wang, Cheng; Li, Ning; Pan, Yong Zhang; Jin, La Hua

doi:10.5539/mas.v10n5p67

Cited by 15 publications

(2 citation statements)

References 24 publications

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“…The modified zeolites (HCl and cetyl trimethyl ammonium bromide) had a higher adsorption capacity than the unmodified zeolite [148]. The adsorption data followed Freundlich model and pseudo-second-order kinetic model.…”

Section: Amphoteric Dye Rhodamine B Zeolitementioning

confidence: 92%

Low-Cost Adsorbents for the Removal of Phenol/Phenolics, Pesticides, and Dyes from Wastewater Systems: A Review

Soonmin

2022

Water

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The huge development of industrial production and human activities throughout the world has resulted in serious water pollution. Pesticides, dyes, phenol, and phenolic compounds may be life-threatening to humans and marine aquatic animals, even at low concentrations. These pollutants must be removed by using different techniques to provide high-quality water. So far, the adsorption process has been considered an effective method to remove pollutants from an aqueous solution. The adsorption method has several advantages, such as low cost, easy operation, and high performance. This article reviewed the removal of dye, pesticides, phenol, and phenolic compounds through zeolite, activated carbon, clay, ash fly, and carbon nanotubes by reviewing the existing literature from 2000 to 2022. The properties of the adsorbent, adsorption studies, the method of design, and optimization conditions were reported. The thermodynamic studies were conducted to determine Gibbs free energy change, standard entropy change, and standard enthalpy change. Adsorption isotherms (Langmuir, Freundlich, and Temkim models) revealed the relationship between the amount of adsorbates per unit adsorbent in the equilibrium process. The adsorption kinetic investigations (pseudo-first-order and pseudo-second-order kinetic model) were carried out to determine the rate of adsorption and correlate the experimental data. Experimental results indicated that a higher adsorption capacity can be observed when the adsorbents have a high surface area and high-porosity structure. The removal percentage of pollutants increased when the adsorbent dosage was increased due to the availability of a larger number of adsorption sites. In conclusion, cheaper adsorbents can be used in wastewater treatment to improve water quality and protect the environment.

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Section: Amphoteric Dye Rhodamine B Zeolitementioning

confidence: 92%

Low-Cost Adsorbents for the Removal of Phenol/Phenolics, Pesticides, and Dyes from Wastewater Systems: A Review

Soonmin

2022

Water

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“…IIayaraja et al (2013) found that the percentage removal of RB dye using activated carbon decreased from 86.9 % to 52.8 % with an increase in concentration of dye from 20 -100 mg/l. Wang et al (2016) reported that the removal percentage of RB dye on modified zeolities decreased from 93 % to 85% with the increase of initial dye concentration which the adsorption capacity of RB increased. Akash 2013found that the percentage of removal of RB dye on activated Mahua seed carbon (AMC) and activated neem seed carbon (ANC) decreased with the increase of dye concentration (50-100-150) ppm from 92% t0 83% to AMC and from 82% t0 64% to ANC.…”

Section: Effect Of Initial Rb Dye Concentrationmentioning

confidence: 98%

Adsorption Kinects and Isotherms for Removal of Rhodamine B (dye) using Adsorbents prepared from drinking water treatment sludge

2017

AJSRE

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The present work aims to investigate the removal of Rhodamine B dye (RB) from aqueous solution by using adsorbents prepared from alum sludge (AS) and Mud sludge (MS) of drinking water treatment plant. The effect of dye concentration, contact time, pH, temperature and adsorbent dose on the dye removal was studied. The equilibrium adsorption data of RB dye on the developed adsorbents were analyzed by the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) Isotherms. The sorption data fitted well to Langmuir isotherm model. The maximum dye removal efficiency was observed at pH 7, contact time 90 min,and 0.1-0.25 gm dosage for both (AS) and (MS) adsorbents. Also, four kinetic models such as Pseudo-first order, Pseudo-second order, Intraparticle diffusion and Elovich models were tested to interpret the experimental data. The kinetic experimental data were fitted well to Pseudo-second order model. The thermodynamics parameters of adsorption system indicated spontaneous and endothermic process. Results indicate the effectiveness of the developed adsorbents for removing RB dye.

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Functionalized faujasite zeolite immobilized on poly(lactic acid) composite fibers to remove dyes from aqueous media

Mascarenhas

Tavares

Paris

2019

J of Applied Polymer Sci

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An adsorbent based on faujasite zeolite (FAU)/poly(lactic acid) (PLA) composite fibers was prepared by electrospinning technique and used for the removal of dyes from contaminated water. FAU particles concentration effect from PLA and the flow rate were evaluated on fibers production. Uniform fibers were produced increasing PLA concentration from 10 to 15% w/v. For FAU/PLA composite, uniform fibers were obtained with regular particles distribution on the polymer matrix by FAU adding 20% w/w at an optimal flow rate (2.0 mL h−1). The adsorption assays using the composite reveal a promising material for cationic dyes removal in aqueous medium using adsorption process, maintaining efficiencies above 80% for rhodamine B and 90% for methylene blue after 90 min. In addition, the FAU/PLA composite fibers allowed their use as a potential adsorbent material easily removed from the medium by mechanical forces. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48561.

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The Adsorption of Rhodamine B in Water by Modified Zeolites

Cited by 15 publications

References 24 publications

Low-Cost Adsorbents for the Removal of Phenol/Phenolics, Pesticides, and Dyes from Wastewater Systems: A Review

Low-Cost Adsorbents for the Removal of Phenol/Phenolics, Pesticides, and Dyes from Wastewater Systems: A Review

Adsorption Kinects and Isotherms for Removal of Rhodamine B (dye) using Adsorbents prepared from drinking water treatment sludge

Functionalized faujasite zeolite immobilized on poly(lactic acid) composite fibers to remove dyes from aqueous media

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