Use of cellulose-based wastes for adsorption of dyes from aqueous solutions

Annadurai, G.; Juang, Ruey‐Shin; Lee, Dong Hoon

doi:10.1016/s0304-3894(02)00017-1

Cited by 1,457 publications

(564 citation statements)

References 25 publications

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“…Orange peel is an agro/industrial waste residue of the orange-juice and soft-drink industries all over the world (Namasivayam et al, 1996) and has been used to remove a number of dyes such as Direct Blue 86 , Direct N Blue-106 , Direct Yellow 12 (Khaled et al, 2009 b ), Direct Red 23 and Direct Red 80 (Arami et al, 2005), Acid Violet 17 (Sivaraj et al; and methyl orange, methylene blue, Rhodamine B, Congo red, methyl violet and amido black 10B (Annadurai et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of remazol brilliant blue on an orange peel adsorbent

Mafra

Igarashi‐Mafra

Zuim

et al. 2013

Braz. J. Chem. Eng.

126

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-A novel orange peel adsorbent developed from an agricultural waste material was characterised and utilised for the removal of Remazol Brilliant Blue from an artificial textile-dye effluent. The adsorption thermodynamics of this dye-adsorbent pair was studied in a series of equilibrium experiments. The time to reach equilibrium was 15 h for the concentration range of 30 mg L -1 to 250 mg L -1 . The adsorption capacity decreased with increasing temperature, from 9.7 mg L -1 at 20 °C to 5.0 mg L -1 at 60 °C. Both the Langmuir and Freundlich isotherm models fitted the adsorption data quite reasonably. The thermodynamic analysis of dye adsorption onto the orange peel adsorbent indicated its endothermic and spontaneous nature. Thus, the application of orange peel adsorbent for the removal of dye from a synthetic textile effluent was successfully demonstrated.

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Section: Introductionmentioning

confidence: 99%

Adsorption of remazol brilliant blue on an orange peel adsorbent

Mafra

Igarashi‐Mafra

Zuim

et al. 2013

Braz. J. Chem. Eng.

126

View full text Add to dashboard Cite

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“…The curve obtained here included four separate regions (Figure 2b): an initial curved region (1) followed by two linear regions (2 and 3), and then a plateau (4). Several authors [14][15][16] have reported similar behavior and attributed the different regions of the curve to the sequential stages of solute mass transfer to the adsorbent. In region (1), film diffusion from the bulk solution to the sorbent surface constituted the main process.…”

Section: Intraparticle Diffusionmentioning

confidence: 74%

Kinetic modeling of the biosorption of Cd2+ ions from aqueous solutions onto Eichhornia crassipes roots using potentiometry: low-cost alternative to conventional methods

2013

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Recebido em 13/12/12; aceito em 14/5/13; publicado na web em 17/7/13This work presents the use of potentiometric measurements for kinetic studies of biosorption of Cd 2+ ions from aqueous solutions on Eichhornia crassipes roots. The open circuit potential of the Cd/Cd 2+ electrode of the first kind was measured during the bioadsorption process. The amount of Cd 2+ ions accumulated was determined in real time. The data were fit to different models, with the pseudosecond-order model proving to be the best in describing the data. The advantages and limitations of the methodology proposed relative to the traditional method are discussed.

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“…The Elovich equation can be simplified if it is presumed that abt ) 1. At the boundary conditions qt ¼ 0 at t ¼ 0, the above mentioned equation changes to (18) [45]. Plot of Elovich kinetics is given.…”

Section: Elovich Kinetic Modelmentioning

confidence: 99%

Effective removal of radioactive 90Sr by CuO NPs/Ag-clinoptilolite zeolite composite adsorbent from water sample: isotherm, kinetic and thermodynamic reactions study

et al. 2016

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In this research, the natural zeolite named clinoptilolite (NCp) was considered as an applicable base structure for subsequent preparation and modification by pre-selected chemical agents to use for removal/adsorption goals in progress. To make Na-clinoptilolite form, the mentioned zeolite undergoes variations by treating with NaCl salt. Ion exchange procedure was utilized to imprint silver ions (Ag ? ) from silver (I) nitrate solution as silver precursor on the modified clinoptilolite zeolite structure to attain Ag-clinoptilolite zeolite. Tenorite (CuO) NPs have been then dispersed and deposited on the external surface of the pre-prepared Ag-clinoptilolite zeolite through impregnation method to prepare the CuO NPs/Ag-clinoptilolite zeolite as a novel composite adsorbent. A series of analyses techniques including SEM-EDAX, XRD and FT-IR were applied for characterization and identification of crystal structure, morphology and elemental composition of the synthesized samples. The removal and adsorption process of radioactive strontium-90 ( 90 Sr) by CuO NPs/Agclinoptilolite zeolite composite adsorbent was exploited under various experimental conditions including pH, amount of adsorbent and the contact time at room temperature and the final optimized procedure used for removal of probable presence of 90 Sr in water sample of Bushehr city. Adsorption isotherm models including Langmuir, Freundlich, Temkin, D-R, H-J and Hasley have been applied and equilibrium adsorption data was better fitted to the Freundlich, Temkin, H-J and Halsey isotherms. The reaction kinetic information was studied by utilizing pseudo first and second orders, Elovich and Intra particle diffusion kinetic models. The adsorption kinetics is finely described by the pseudo second-order model. The energy of activation E a calculated using the Arrhenius equation was found to be 44.75 kJ/mol. Further, the evaluation of the thermodynamic parameters such as DG 0 , DH 0 and DS 0 , denoted that adsorption process of 90 Sr was spontaneous and illustrates a chemical adsorption properties and exothermic nature of the adsorption. The obtained results revealed that 90 Sr ions were removed by CuO NPs/Agclinoptilolite zeolite composite under optimized conditions after 6 h with a yield more than 97 %.

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Use of cellulose-based wastes for adsorption of dyes from aqueous solutions

Cited by 1,457 publications

References 25 publications

Adsorption of remazol brilliant blue on an orange peel adsorbent

Adsorption of remazol brilliant blue on an orange peel adsorbent

Kinetic modeling of the biosorption of Cd2+ ions from aqueous solutions onto Eichhornia crassipes roots using potentiometry: low-cost alternative to conventional methods

Effective removal of radioactive 90Sr by CuO NPs/Ag-clinoptilolite zeolite composite adsorbent from water sample: isotherm, kinetic and thermodynamic reactions study

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