Adsorption of Dyes using Peat: Equilibrium and Kinetic Studies

Sepúlveda, L.; Fernández, Katherina; Contreras, Elsa Galarza; Palma, C.

doi:10.1080/09593332508618390

Cited by 33 publications

(14 citation statements)

References 17 publications

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“…These may be compared with literature values for derived and commercial activated carbons; for AB 1, reported capacities are 25 (Sepulveda et al 2004), 18 (Annadurai et al 2002) and 1.73 mg g −1 (Koumanova et al 2003), and for AB 113, reported capacities are 219 (Jain et al 2003), 30 (Koumanova et al 2003), 310 (Faria et al 2004) and 2.1 (Jain et al 2003). The widely used commercial water treatment activated carbon F400 only had capacities of 101, 101 and 129 mg g −1 for three acid dyes, namely Polar Blue RAWL, Acid Red 114 and Polar Yellow, respectively (Choy et al 1999).…”

Section: Equilibrium Isothermsmentioning

confidence: 99%

Simplified Fixed Bed Design Models for the Adsorption of Acid Dyes on Novel Pine Cone Derived Activated Carbon

Mirfazaelian

Samarghandi

McKay

2010

Water Air Soil Pollut

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A novel activated carbon has been prepared by the activation of ground pine cones using phosphoric acid activation, and the nitrogen BrunauerEmmett-Teller surface area was 869 m 2 g −1 . Equilibrium isotherms were performed to assess the capacity of the activated carbon using two acidic dyes, namely Acid Blue 113 and Acid Black 1. The monolayer equilibrium isotherm capacities of Acid Blue 113 and Acid Black 1 were 286 and 458 mg dye/g C, respectively. These capacities are significantly higher than commercial carbons and other literature carbons. For the first time, these carbons were tested in fixed bed experimental systems and data analysed using the bed depth service time model (BDST) and the carbon usage rate (CUR) model. In the fixed bed studies, the key parameters for a 20-cm bed depth for the BDST model at 50% breakthrough capacity are (a) for Acid Black, the BDST capacity is 149 mg dye/g carbon and operating time is 1,530 min and (b) for Acid Blue, the breakthrough capacity is 9 mg of dye/g of carbon and operating time is 195 min. The fixed bed study indicates that the BDST design models can be applied satisfactorily, and the pine cone carbon has significant potential but a more mesoporous pine cone carbon is preferable for the larger Acid Black dye. The CUR design method was not successful.

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Section: Equilibrium Isothermsmentioning

confidence: 99%

Simplified Fixed Bed Design Models for the Adsorption of Acid Dyes on Novel Pine Cone Derived Activated Carbon

Mirfazaelian

Samarghandi

McKay

2010

Water Air Soil Pollut

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“…The experimental equilibrium data can be fit adequately by both models (correlation coefficients [0.99). The values of maximum adsorption capacity of AB1 onto banana peel, which depends on the particle size, are in the range 250-620 mg g -1 ; whereas, in other bioadsorbents such as magellanic moss peat [44] and cells fodder yeast (Kluyveromyces fragilis) magnetically modified [45], the maximum adsorption capacity of AB1 reported, is in the range of 25.0 and 29.8 mg g -1 , respectively. The maximum adsorption capacity increases 20% when the particle diameter decreases by half, while the effect is not significant for k L constant.…”

Section: Adsorption Of Acid Black 1 Dyementioning

confidence: 93%

Eco-friendly Technologies Based on Banana Peel Use for the Decolourization of the Dyeing Process Wastewater

Palma

Contreras

Urra

et al. 2010

Waste Biomass Valor

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This study analyzed some alternatives to the valorization of agricultural residues considering its use in the treatment of colored effluents. The acid-base behavior of the banana peel surface was thus determined in order to establish the feasibility of its use as a bioadsorbent for dyes. The adsorption capacity of Acid Black 1 was evaluated, through the equilibrium isotherm and the kinetics of this uptake process was also analyzed. Additionally, banana peel was used as substrate-support to evaluate the growth of Inonotus sp SP2, Stereum hirsutum RU 104 and Pleurotus eryngii IJFM 169 and their ligninolytic enzymes production. The decolourization ability of strain fungi was moreover screened. The concentration of functional basic groups in the banana peel surface was determined in 5.5 mmol g -1 as six and a half times higher than acid groups, while the lowest value of the maximum adsorption capacity of Acid Black 1 was 250 mg g -1 . The adsorption kinetics of this dye was suitably represented by a pseudo second order model, obtaining correlation coefficients greater than 0.98. Additionally, the banana peel was demonstrated to be a source of carbon available for growth of the fungi studied. Reducing sugars supplied for banana peel were abruptly consumed up to the 5th day by S. hirsutum and Inonotus sp, while a slower consumption was observed in the case of P. eryngii. Manganese Peroxidase was produced by the three fungal strains, Inonotus sp. additionally produces Laccase and Aryl-alcohol oxidase.Screening assays showed that all of the dyes were decolorized, resulting in efficiencies between 50 and 99% by the three strains, with the exception of Basic Violet 4. Acid Black 1 was decolorized efficiently by Inonotus sp and S. hirsutum. In conclusion, banana peel is a promising material for development of an integral bioremediation strategy for wastewater containing hazardous compounds.

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“…On the contrary, for the same temperature change, interaction energy parameter (b) decreased from 0.295 to 0.176 (L/g) and from 0.132 to 0.109 (L/g) for WS and CCLs, respectively. These values state that the dye presents a strong interaction with the active sites of the 1920 L.A. Sepúlveda et al [69,70]. The fit parameters of adsorption experimental data using the Freundlich model are shown in Table 4, whose correlation coefficients (R 2 ) vary from 0.63 to 0.88.…”

Section: Adsorption Isothermmentioning

confidence: 98%

Valorization of agricultural wastes as dye adsorbents: characterization and adsorption isotherms

Sepúlveda

Cuevas

Contreras

2015

Environmental Technology

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The purpose of this work is to evaluate the valorization of agricultural waste, wheat straw (WS) and corn cob leaves (CCLs) as textile dye adsorbents. Physico-chemical and superficial characteristics of the agricultural wastes, together with the interactions with the CI Basic Violet 4 (BV4) dye, were investigated by means of the determination of the isotherm adsorption at different temperatures. The morphological characterization showed that the solid surface is coarse with a low pore level. However, through Fourier transformed infrared analysis, the presence of carboxylic and hydroxylic acid groups and hydrophobic methyl groups was detected. The concentration of acid groups is determined by the Boehm method and was found to be 1.00 and 0.89 meq/g for WS and CCLs, respectively. The point zero charge for each adsorbent was 5.76 and 4.08. Adsorption experimental data presented a better-fit Langmuir model, indicating that adsorption occurred in a monolayer with preferential interaction. The maximum adsorption capacity was determined to be 70.0-89.0 and 47.0-68.0 mg/g for CCLs and WS, respectively. The thermodynamic analysis of the Langmuir parameter b showed that the adsorption of the BV4 dye is spontaneous and exothermic with adsorption energies of 14.43 and 5.58 KJ/mol for CCLs and WS, respectively.

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Adsorption of Dyes using Peat: Equilibrium and Kinetic Studies

Cited by 33 publications

References 17 publications

Simplified Fixed Bed Design Models for the Adsorption of Acid Dyes on Novel Pine Cone Derived Activated Carbon

Simplified Fixed Bed Design Models for the Adsorption of Acid Dyes on Novel Pine Cone Derived Activated Carbon

Eco-friendly Technologies Based on Banana Peel Use for the Decolourization of the Dyeing Process Wastewater

Valorization of agricultural wastes as dye adsorbents: characterization and adsorption isotherms

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