Adsorption of Congo Red Dye from Aqueous Solutions Using Roots of Eichhornia Crassipes: Kinetic and Equilibrium Studies

Wanyonyi, Wycliffe Chisutia; Onyari, John Mmari; Shiundu, Paul M.

doi:10.1016/j.egypro.2014.06.105

Cited by 215 publications

(92 citation statements)

References 19 publications

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“…Although the percentage removal of CR dye increased with increase of adsorbent dosage, the equilibrium adsorption capacity decreased with increase of adsorbent dosage (figure not shown). This may be due to aggregation of the adsorption sites which limits the availability of all the active sites during adsorption process [17,26].Similar trend has been reported for the adsorption of CR dye by Roots of Eichhornia crassipe [27]. …”

Section: Effect Of Adsorbent Dosagesupporting

confidence: 68%

Adsorption of Congo Red Dye from Aqueous Solution Using Agricultural Waste

Conrad¹,

Nnaemeka²,

Uchechi³

et al. 2016

IOSR

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Section: Effect Of Adsorbent Dosagesupporting

confidence: 68%

Adsorption of Congo Red Dye from Aqueous Solution Using Agricultural Waste

Conrad¹,

Nnaemeka²,

Uchechi³

et al. 2016

IOSR

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“…Industrial effluents from textile, printing, glass, paint, food, ceramic, pharmaceutical, paper, polymers, etc. preponderantly contain organic waste such as synthetic dyes (Wanyonyi et al 2014;Rebitanim et al 2012). Trivial amounts of dye residues also bestow their characteristic color to the wastewater, which leads the formation of dazzling contaminants.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis, characterization of biomaterial-supported zero-valent iron nanoparticles for contaminated water treatment

2018

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“…The percentage removal of CV dye by adsorption onto DPF at different Adsorption of Congo red (CR) from aqueous solution using dried roots of Eichhornia crassipes was studied by Wanyonyi et al [13]. Batch experiments were carried out for sorption kinetics and isotherms.…”

Section: Literature Reviewmentioning

confidence: 99%

Adsorption of Basic and Acidic Dyes onto Agricultural Wastes

Okorocha

Okoji

Osuji

2016

ILCPA

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Abstract. The potential of almond leaves powder, (ALP) for the removal of Crystal violet (CV) and Congo red (CR) dyes from aqueous solution was investigated. The adsorbent (ALP) was characterized by FTIR and SEM analysis. Batch adsorption studies were conducted and various parameters such as contact time, adsorbent dosage, initial dye concentration, pH and temperature were studied to observe their effects in the dyes adsorption process. The optimum conditions for the adsorption of CV and CR dyes onto the adsorbent (ALP) were found to be: contact time (100mins), pH (10.0), temperature (343K) for an initial CV dye concentration of 50 mg/L using adsorbent dose of 1.0 g and contact time (100mins), pH (2.0), temperature (333K) for an initial CR dye concentration of 50 mg/L using adsorbent dose 1.0 g respectively. The experimental equilibrium adsorption data fitted best and well to the Freundlich isotherm model for both CV and CR dyes adsorption. The maximum adsorption capacity of ALP was found to be 22.96 mg/g and 7.77 mg/g for the adsorption of CV and CR dyes respectively. The kinetic data conformed to the pseudosecond-order kinetic model. Thermodynamic quantities such as Gibbs free energy (G 0 ), enthalpy (H 0 ) and entropy (S 0 ) were evaluated and the negative values of G 0 obtained for both dyes indicate the spontaneous nature of the adsorption process while the positive values of H 0 and S 0 obtained indicated the endothermic nature of the adsorption and increased randomness during the adsorption process respectively for the adsorption of CV and CR onto ALP. Based on the results obtained such as good adsorption capacity, rapid kinetics, and its low cost, ALP appears to be a promising adsorbent material for the removal of CV and CR dye stuff from aqueous media.

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Adsorption of Congo Red Dye from Aqueous Solutions Using Roots of Eichhornia Crassipes: Kinetic and Equilibrium Studies

Cited by 215 publications

References 19 publications

Adsorption of Congo Red Dye from Aqueous Solution Using Agricultural Waste

Adsorption of Congo Red Dye from Aqueous Solution Using Agricultural Waste

Green synthesis, characterization of biomaterial-supported zero-valent iron nanoparticles for contaminated water treatment

Adsorption of Basic and Acidic Dyes onto Agricultural Wastes

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