Batch adsorption of phenol onto physiochemical-activated coconut shell

Din, Azam Taufik Mohd; Hameed, B.H.; Ahmad, A.L.

doi:10.1016/j.jhazmat.2008.05.009

Cited by 284 publications

(110 citation statements)

References 51 publications

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“…As a result, the remaining vacant surface sites are diffi cult to be occupied due to formation of similarly charged particles which exert repulsive forces between the phenol molecules on the solid surface and in the bulk phase 21 . Besides, phenol molecules are very small in size and can easily diffuse into internal pores until they become saturated; which will reduce the driving force for mass transfer between the bulk liquid phase and the solid phase over time 11 . Figure 6 depicts the effect of time on the percentage removal and the result was that the equilibrium time for either adsorbent was reached at approx.…”

Section: Effect Of Contact Time Of Fl Uidizationmentioning

confidence: 99%

“…Phenol can be removed effectively through adsorption process using a variety of adsorbents 10 , but use of bamboo biochar is seldom mentioned. Various functional groups on bamboo biochar surface contribute to a unique and specifi c uptake for different molecules species 11 . Furthermore, it is well known that nano-size adsorbents, including hydroxyapatite, possess excellent surface properties, such as large accessible internal and external surface and have large surface area 12 , bamboo biochar is a nano-size adsorbent.…”

Section: Introductionmentioning

confidence: 99%

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Equilibrium and kinetic studies of sorption of 2.4-dichlorophenol onto 2 mixtures: bamboo biochar plus calcium sulphate (BC) and hydroxyapatite plus bamboo biochar plus calcium sulphate (HBC), in a fluidized bed circulation column

Alamin

Kaewsichan

2016

Polish Journal of Chemical Technology

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Sorption studies were carried out to investigate removal of 2.4-dichlorophenol (2.4-DCP) from aqueous solution in a fl uidized bed by two types of adsorbent mixtures: BC (Bamboo char plus Calcium sulphate), and HBC (Hydroxyapatite plus Bamboo char plus Calcium sulphate); both manufactured in ball shape. The main material bamboo char was characterized by FTIR, DTA and SEM. The adsorption experiments were conducted in a fl uidized bed circulation column. Adsorption, isotherms and kinetic studies were established under 180 min operating process time, at different initial 2.4-DCP solution concentrations ranging from 5-10 mg/L, and at different fl ow rates ranging from 0.25-0.75 L/min. The data obtained fi tted well for both the Langmuir and Freundlich isotherm models; indicating favorable condition of monolayer adsorption. The kinetics of both adsorbents complies with the pseudo second-order kinetic model. BC was proven a new effective composite and low cost adsorbent which can be applied in the fi eld of wastewater treatment, and it can also play an important role in industry water treatment.

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Section: Effect Of Contact Time Of Fl Uidizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Equilibrium and kinetic studies of sorption of 2.4-dichlorophenol onto 2 mixtures: bamboo biochar plus calcium sulphate (BC) and hydroxyapatite plus bamboo biochar plus calcium sulphate (HBC), in a fluidized bed circulation column

Alamin

Kaewsichan

2016

Polish Journal of Chemical Technology

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“…However, the Freundlich isotherm supposes that the adsorption occurs at heterogeneous sites with non-uniform distribution of energy levels. The Freundlich isotherm describes reversible adsorption and is not restricted to the formation of a monolayer (Mohd Din et al 2009). The Langmuir and the Freundlich isotherm models are defined in Eqs.…”

Section: Isotherm Studymentioning

confidence: 99%

Adsorption of Pb(II) from Solution using Peanut Shell as Biosorbent in the Presence of Amino Acid and Sodium Chloride

Ouyang¹,

Liu²,

Wen³

2014

BioResources

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Currently, marine protein byproducts are mainly hydrolyzed and prepared for applications that depend on their physiological activity. Such uses require strict removal of heavy metal ions from the material. In this work, a green approach was proposed using peanut shells as adsorbent to remove Pb(II) from solutions containing amino acid and sodium chloride. The effects of amino acids and sodium chloride on the removal of Pb(II), as well as the influence of liquid to solid ratio, pH, temperature, and contact time on the adsorption, were studied. The results showed that the content of sodium chloride and amino acid could significantly decrease the adsorption efficiency for Pb(II). The experimental data could be described with the Langmuir adsorption isotherm model and pseudo-second order kinetic model. The adsorption capacity of the sorbent for Pb(II) was calculated from the Langmuir isotherm model and found to be 7.1 mg g -1 at pH 4.

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“…Adsorption capacity of activated carbon strongly depends on its porosity and surface area. Textural property of AC depends on method of preparation and starting material (Mohd Din et al, 2009;Meshko et al, 2001). There are two processes for the preparation of activated carbon: physical activation and chemical activation.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Activated Carbon Prepared from Banana Peels for Treatment of Heavy Metal Ions from Waste Water

Al-Fawzan¹

2018

ijgsr

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Efficiency of activated carbon derived from banana peels has been was studied as effective adsorbent for removal of Cu(II), Zn(II) and Cd(II) ions from waste water. The characteristics of the prepared activated carbon were studied via scanning electron microscope (SEM) and FTIR. Batch experiment were carried out under different conditions of contact time, initial heavy metal concentration and solution pH (2-10). Results showed that the activated carbon samples showed higher removal efficiency compared to the dried fruits peels for all the heavy metal studied. Cu(II) showed the highest removal efficiency followed by Cd(II) then Zn(II) ions.

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Batch adsorption of phenol onto physiochemical-activated coconut shell

Cited by 284 publications

References 51 publications

Equilibrium and kinetic studies of sorption of 2.4-dichlorophenol onto 2 mixtures: bamboo biochar plus calcium sulphate (BC) and hydroxyapatite plus bamboo biochar plus calcium sulphate (HBC), in a fluidized bed circulation column

Equilibrium and kinetic studies of sorption of 2.4-dichlorophenol onto 2 mixtures: bamboo biochar plus calcium sulphate (BC) and hydroxyapatite plus bamboo biochar plus calcium sulphate (HBC), in a fluidized bed circulation column

Adsorption of Pb(II) from Solution using Peanut Shell as Biosorbent in the Presence of Amino Acid and Sodium Chloride

Efficiency of Activated Carbon Prepared from Banana Peels for Treatment of Heavy Metal Ions from Waste Water

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