Adsorptions of high concentration malachite green by two activated carbons having different porous structures

Başar, Canan Akmil; Önal, Yunus; Kiliçer, T; Eren, Didem

doi:10.1016/j.jhazmat.2005.06.025

Cited by 86 publications

(27 citation statements)

References 46 publications

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“…In general, activated carbons in both granular activated carbon (GAC) and powder activated carbon (PAC) forms are the most widely used adsorbents because of their excellent adsorption capability for organic pollutants [1]. The high adsorption capacities of activated carbons are usually related to their specific surface area, pore volume, and porosity [2].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characteristics of agricultural waste activated carbon by physical activation having micro- and mesopores

Aworn

Thiravetyan

Nakbanpote

2008

Journal of Analytical and Applied Pyrolysis

159

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Section: Introductionmentioning

confidence: 99%

Preparation and characteristics of agricultural waste activated carbon by physical activation having micro- and mesopores

Aworn

Thiravetyan

Nakbanpote

2008

Journal of Analytical and Applied Pyrolysis

159

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“…It will affect the aquatic life and cause detrimental effects in liver, gill, and kidney and inhibits development of aquatic animals and plants by blocking out sunlight penetration. Therefore, the dyes in the effluents of the factories have to be removed to prevent environmental pollution in the aquatic ecosystems [7][8][9]. Presence of dyes in water bodies reduces the photosynthetic activity and so removal of dyes from effluent is of prime importance to the environmental engineers.…”

mentioning

confidence: 99%

Assessment on the Removal of Malachite Green Using Tamarind Fruit Shell as Biosorbent

Saha

Chowdhury

Gupta

et al. 2010

CLEAN Soil Air Water

132

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Tamarind fruit shell was used as a low cost biosorbent for the removal of malachite green from aqueous solution. The various factors affecting adsorption such as agitation, pH, initial dye concentration, contact time, and temperature were investigated. It was observed that the dye adsorption capacity was strongly dependent on solution pH as well as temperature. The equilibrium data were described by the Langmuir, Freundlich, and Temkin isotherm models. The Langmuir isotherm model showed good fit to the equilibrium adsorption data and the maximum adsorption capacity obtained was 1.951 mg/g at 303 K. The kinetics of adsorption followed the pseudo-second-order model and the rate constant decreased with increase in temperature indicating exothermic nature of adsorption. The Arrhenius equation was used to obtain the activation energy (E a ) for the adsorption system. The activation energy was estimated to be 63.56 kJ/mol. Thermodynamic parameters such as Gibbs free energy (DG 0 ), enthalpy (DH 0 ), and entropy (DS 0 ) were also investigated. Results suggested that adsorption of malachite green onto tamarind fruit shell was a spontaneous and exothermic process. Present investigation suggests that tamarind fruit shell may be utilized as a low cost adsorbent for removal of malachite green from aqueous solution. IntroductionBiosorption is the property of certain inactive, dead, microbial biomass to adsorb or bind solute particles (heavy metals or dye or contaminants mainly from industrial effluents) present in liquid phase [1]. These solute particles are removed by using various types of biosorbent. The biosorbents materials are highly porous in nature. This porous volume is associated with small pores and so as a result diffusional resistance will occur. The adsorption phenomenon in biosorbent occurs primarily on the pore walls or at specific sites inside the particles. Biosorbents consist of mainly lipids, polysaccharides, and proteins and provide different functional groups such as phenolic, imidazole, carboxyl, hydroxyl, and carbonyl groups that can make coordination complex with different dye. Biosorbents can be used live or dead cells but in practical applications, the use of non-living biomass is more convenient and practical because living biomass cells often require the addition of fermentation process which increases the biological oxygen demand or chemical oxygen demand in the effluent. In addition, non-living biomass is not affected by the toxicity of the metal ions, they can be subjected to different chemical and physical treatment techniques to enhance their performance, and adsorbed metals can be easily recovered from the biomass by many chemical and physical methods [2][3][4][5].Malachite green (N-methylated diaminotriphenylmethane dye) is cationic dye and readily soluble in water. It is used for dyeing silk, cotton, leather, and paper. It is also used as biological strain for microscopic analysis of cell and tissue samples as a fungicide and ectoparasiticide in aquaculture and in fisheries and as therape...

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“…Activated carbon from pine sawdust (Akmil-Basar et al, 2005), commercially available powdered activated carbon (Kumar and Sivanesan, 2006), activated carbon from lignite (Onal et al, 2007), carbon based adsorbent from the pyrolysis of waste materials from paper industry and pine bark (Mendez et al, 2007) and bentonite (Bulut et al, 2008). A number of non-conventional sorbents (Crini, 2006) such as sugarcane dust, algae, sawdust, bottom ash, fly ash, de-oiled soya, maize cob, peat, iron humate, mixed sorbents, microbial biomass, activated slag, waste product from agriculture, magnetic nanoparticle and coal have been tested for malachite green dye adsorption: Sugar cane dust (Khattri and Singh, 1999), neem sawdust (Khattri and Singh, 2000), chemically modified rice straw (Gong et al, 2006), hen feathers (Mittal, 2006), cyclodextrin based adsorbent, (Crini et al, 2007) rubber wood (Kumar and Sivanesan, 2007), lemon peel (Kumar, 2007) and Arundo donax root carbon (Zhang et al, 2008) were also used.…”

Section: XLVII No 2 -927mentioning

confidence: 99%

emoval of malachite green dye from aqueous solutions by diasporic Greek raw bauxite

Georgiadis¹,

Papadopoulos²,

Filippidis³

et al. 2017

geosociety

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Raw bauxite from Klisoura mine (Prefecture of Fokida, Greece) containing 72 wt.% diaspore, 16 wt.% hematite, 6 wt.% quartz, 4 wt.% anatase and 2 wt.% calcite, has been used for the removal of malachite green dye from aqueous solutions. The batch type experiments were conducted with 10 ml of solution, at pH = pHZPC = 6.7 and contact time 1 h. The initial concentration of malachite green dye was 10 mg/l, the bauxite quantity was 0.02 g, 0.04 g, 0.06 g, 0.1 g and 0.2 g. The highest adsorption capacity achieved was 4.5 mg/g (90% removal) using 0.02 g bauxite. The removal capacity of raw bauxite is comparable to other non-conventional adsorbents, such as neem sawdust, sugar cane dust and cane root carbon.

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Adsorptions of high concentration malachite green by two activated carbons having different porous structures

Cited by 86 publications

References 46 publications

Preparation and characteristics of agricultural waste activated carbon by physical activation having micro- and mesopores

Preparation and characteristics of agricultural waste activated carbon by physical activation having micro- and mesopores

Assessment on the Removal of Malachite Green Using Tamarind Fruit Shell as Biosorbent

emoval of malachite green dye from aqueous solutions by diasporic Greek raw bauxite

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