Batch removal of malachite green from aqueous solutions by adsorption on oil palm trunk fibre: Equilibrium isotherms and kinetic studies

Hameed, B.H.; El-Khaiary, Mohammad I.

doi:10.1016/j.jhazmat.2007.10.017

Cited by 308 publications

(127 citation statements)

References 42 publications

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“…Therefore, equilibrium time of 2 hours was selected for the adsorption of both dyes for further studies. A similar observation was reported for the adsorption of MG on oil palm trunk fiber [18].…”

Section: Resultssupporting

confidence: 87%

Removal of Methylene Blue (Mb) Dye from Aqueous Solution by Bioadsorption onto Untreated Parthenium hystrophorous Weed

Million¹,

Lelisa²

2014

Mod Chem Appl

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Nowadays, the application and search of alternative cheap and ecofriendly adsorbents to replace activated carbon was made. It has been a major focus for the removal of dyes from waste water. In this study untreated Parthenium hystrophorous weed (PHW) was used to remove a textile dye (Methylene Blue (MB)) from an aqueous solution by adsorption technique. The factors influencing the adsorption were also investigated. The MB dye removal by the PHW was significantly dependent on contact time, pH, dye concentration, adsorbent dose and pH. The optimum equilibrium conditions for removal of MB dye by PHW were; contact time of 2 hrs, at pH 8 and an adsorbent dose of 0.8 g. The adsorption data better fits Langmuir isotherm model well and the maximum adsorption capacity of the PHW was found to be 23.8 mg g -1 . The results obtained in this study indicated that PHW will be an attractive candidate for removing cationic dyes from the dye wastewater.

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Section: Resultssupporting

confidence: 87%

Removal of Methylene Blue (Mb) Dye from Aqueous Solution by Bioadsorption onto Untreated Parthenium hystrophorous Weed

Million¹,

Lelisa²

2014

Mod Chem Appl

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“…The initial rate of adsorption, i.e. the pseudo-first-order constant multiplied by the equilibrium adsorption capacity, increases with initial mercury concentration, as expected, since the driving force is increased [15].…”

Section: 9977supporting

confidence: 77%

Removal of mercury from aqueous solutions by adsorption on a new ultra stable mesoporous adsorbent and on a commercial ion exchange resin

Clercq¹

2012

International Journal of Industrial Chemistry

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“…This method relies on interactions between adsorbent and adsorbate.Thus,a key factor in the adsorption process is the selective adsorbent with its intrinsic functional groups. Several adsorbents that have been studied for removal of malachite green include eggshells 2 , clay 3 , rice husk, bentonite,zeolite,sawdust,rice straw,oil palm trunk fiber,degreased coffee beans,treated ginger waste,hen feathers,chitin hydrogel,chitosan beads, silica gel,acid-activated sintering process red mud, water-soluble melamine/maleic anhydride sorbent [20][21][22][23][24][25][26][27][28][29][30][31][32][33] ,activated carbonand other carbon-based materials [34][35][36][37][38][39][40] .However, because these adsorbents are low in either efficiency or adsorption capacity,new adsorbents have recently been developed that possess high capacity, larger specific surface area and high selectivity.…”

mentioning

confidence: 99%

Thermodynamic and kinetic study of the intrinsic adsorption capacity of graphene oxide for malachite green removal from aqueous solution

Nuengmatcha¹,

Mahachai²,

Chanthai³

2014

Orient J Chem

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Graphene oxide (GO) was produced from bare graphite (BGP) material and was used as an intrinsic adsorbent for the removal of malachite green (MG) from aqueous solution. In an optimization study, the effects of the initial concentration of MG, solution pH, adsorbent dosage, contact time and ionic strength were investigated in detail. The water-soluble dye was analyzed at a maximum wavelength of 618 nm. The optimum conditions for MG removal from aqueous solution included a 300 mg/L initial concentration with 0.02 mg adsorbent at pH 5.1, and complete adsorption equilibrium was reached within 40 min. The maximum adsorption capacity of GO for MG was 384.62 mg/g, dramatically higher (over 10 times) than that of BGP (28.73 mg/g).The adsorption process followed pseudo-second-order kinetics. Thermodynamic data demonstrated that dye adsorption onto the GO surface was mainly an exothermic spontaneous reaction. The remarkably different adsorption isotherms for GO and BGP fit well with the Langmuir and Freundlich models, respectively. It is therefore evident that the prepared GO can be used as a highly effective adsorbent for this toxic dye.

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Batch removal of malachite green from aqueous solutions by adsorption on oil palm trunk fibre: Equilibrium isotherms and kinetic studies

Cited by 308 publications

References 42 publications

Removal of Methylene Blue (Mb) Dye from Aqueous Solution by Bioadsorption onto Untreated Parthenium hystrophorous Weed

Removal of Methylene Blue (Mb) Dye from Aqueous Solution by Bioadsorption onto Untreated Parthenium hystrophorous Weed

Removal of mercury from aqueous solutions by adsorption on a new ultra stable mesoporous adsorbent and on a commercial ion exchange resin

Thermodynamic and kinetic study of the intrinsic adsorption capacity of graphene oxide for malachite green removal from aqueous solution

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