Kinetics of Basic Dye Adsorption onto Sphagnum Magellanicum Peat

Contreras, Elsa Galarza; Martinez, Boris E.; Sepúlveda, L.; Palma, C.

doi:10.1260/026361707785082396

Cited by 23 publications

(9 citation statements)

References 23 publications

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“…As a result, development of low cost alternative adsorbents has been a focus of research and a number of low cost adsorbents have been reported in the literature. These include clays [10,11], red mud [12], fly ash [13], steel wastes [14], peat [15], and diverse biomasses derived from plants, animals and microbes [16 -22]. These biosorbents are generally by-products or waste from large scale industrial operations and agricultural activities.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Methylene Blue from Aqueous Solution Using a Bioenergy Forest Waste: Xanthoceras sorbifolia Seed Coat

Yao¹,

Wang

2009

CLEAN Soil Air Water

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Xanthoceras sorbifolia seed coat (XSSC), a bioenergy forest waste, was used for the adsorption of methylene blue (MB) from aqueous solutions. The effects of adsorbent dosage, pH, adsorbate concentration and contact time on MB biosorption were studied. The equilibrium adsorption data was analyzed by Langmuir and Freundlich isotherm models. The results indicated that the Langmuir model provided the best correlation with the experimental data. The adsorption capacity of XSSC for MB was determined with the Langmuir model and was found to be 178.6 mg/g at 298 K. The adsorption kinetic data was modeled using the pseudo-first order, pseudo-second order, and intraparticle diffusion kinetic equations. It was seen that the pseudo-second order equation could describe the adsorption kinetics, and intraparticle diffusion was not the sole rate controlling factor. Thermodynamic parameters were also evaluated. Standard Gibbs free energy was spontaneous for all interactions, and the biosorption process exhibited exothermic standard enthalpy values. The results indicated that XSSC is an attractive alternative for removing cationic dyes from wastewater.

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Section: Introductionmentioning

confidence: 99%

Biosorption of Methylene Blue from Aqueous Solution Using a Bioenergy Forest Waste: Xanthoceras sorbifolia Seed Coat

Yao¹,

Wang

2009

CLEAN Soil Air Water

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“…Adsorption of basic dyes on high cellulosic concentration is also governed by coulombic interaction and ion exchange (Contreras et al, 2007) as it becomes partially negatively charged when immersed with water and interact with cationic species in water.…”

Section: Comparative Study Of Present Adsorbents With Previous Studiesmentioning

confidence: 99%

Removal of hazardous dye from aqueous media using low‐cost peanut (Arachis hypogaea) shells as adsorbents

Herbert

Kumar

Janardhan

2020

Water Environment Research

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In the present article, an attempt is made for simple, low-cost, and efficient removal of Auramine dye using peanut (Arachis hypogaea) shells as adsorbents. Two different forms of adsorbents distilled water washed peanut shells (DPS) and NaOH treated peanut shells (NPS) were used as adsorbents. Both the adsorbents were studied using BET, pH PZC , FTIR, SEM, TGA, and XRD characterization techniques. Adsorption parameters such as effect of contact time, pH, initial dye concentration, adsorbent dose, and temperature were also assessed. Isotherm analysis at optimum conditions showed Langmuir fitted better with a q m value of 96.15 mg/g for DPS and 294.12 mg/g for NPS; while in kinetic analysis, pseudo-second order was superior. Thermodynamics study stated that adsorption process was endothermic in nature. Overall outcomes establish that the two forms of peanut shells, DPS, and NPS were excellent in removal of Auramine dye and are low cost also as preparation cost of DPS and NPS is 68.73 INR and 106.19 INR per kg, respectively. © 2020 Water Environment Federation • Practitioner points • Removal of Auramine dye from aqueous media using different forms of peanut (Arachis hypogaea) shells as adsorbents is discussed. • q m (Langmuir) using DPS and NPS were found to be 96.15 and 294.12 mg/g, respectively. • Preparation cost of DPS was 68.73 INR per 1 kg, whereas for NPS it was 106.19 INR per 1 kg.

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“…In view of that, a pseudo-kinetic model may be appropriate to approximate the process dynamics of protein adsorption [65,66].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Adsorption and separation of proteins by a smectitic clay mineral

Ralla

Sohling²,

Riechers

et al. 2010

Bioprocess Biosyst Eng

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The adsorption of proteins by a smectitic clay mineral was investigated. The clay used in this study is a mixture of montmorillonite and amorphous SiO(2). Due to the high porosity the montmorillonite units are accessible for protein adsorption. The amorphous silica prevents the montmorillonite from swelling and allows column packing. Protein adsorption was performed at different pH under static conditions. Furthermore, static capacities were determined. The material reveals high adsorption capacities for proteins under static conditions (270-408 mg/g), whereby proteins are mainly adsorbed via electrostatic interactions. The Freundlich isotherm is suggested as an adsorption model. For desorption a pH shift was found to be most effective. Binding and elution of human serum albumin and ovalbumin were tested under dynamic conditions. Dynamic capacities of about 40 mg/g for ovalbumin at 764 cm/h were found. The clay mineral provides suitable properties for the application as cost-efficient, alternative separation material.

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Kinetics of Basic Dye Adsorption onto Sphagnum Magellanicum Peat

Cited by 23 publications

References 23 publications

Biosorption of Methylene Blue from Aqueous Solution Using a Bioenergy Forest Waste: Xanthoceras sorbifolia Seed Coat

Biosorption of Methylene Blue from Aqueous Solution Using a Bioenergy Forest Waste: Xanthoceras sorbifolia Seed Coat

Removal of hazardous dye from aqueous media using low‐cost peanut (Arachis hypogaea) shells as adsorbents

Adsorption and separation of proteins by a smectitic clay mineral

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