Partially pyrolyzed olive pomace sorbent of high permeability for preconcentration of metals from environmental waters

El‐Sheikh, Amjad H.; Sweileh, Jamal A.; Saleh, Maysoon

doi:10.1016/j.jhazmat.2009.03.061

Cited by 30 publications

(10 citation statements)

References 42 publications

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“…The empirical Freundlich model, which is based on adsorption by a heterogeneous surface, takes the form :

q_{normale} = K_{normalF} C_{normale}^{normaln}

where K F (mg/L) is the equilibrium constant indicative of relative adsorption capacity and n is the model exponent which characterizes quasi‐Gaussian energetic heterogeneity of the surface. A favorable uptake of dye is indicated by higher n values [].…”

Section: Methodsmentioning

confidence: 99%

“…where K F (mg/L) is the equilibrium constant indicative of relative adsorption capacity and n is the model exponent which characterizes quasi-Gaussian energetic heterogeneity of the surface. A favorable uptake of dye is indicated by higher n values [ [1][2][3][4][5][6][7][8][9][10]]. Another useful isotherm which assumes an expression for condensation of a multilayer at a relatively large distance from a heterogeneous surface is the Halsey's isotherm [29]:…”

Section: Modeling Equilibrium Adsorption Datamentioning

confidence: 99%

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Application of Partial Least Squares‐Kernel Calibration in Competitive Adsorption Studies Using an Effective Chemically Activated Biochar

Issa

Al‐Degs

El‐Sheikh

et al. 2017

CLEAN Soil Air Water

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In this work, chemically activated pine wood was used to prepare biochar, which was used to study the competitive adsorption behavior of four colorants (allura red (AR), brilliant black (BB), tartrazine (TT), and sunset yellow (SY)). Dye concentrations in mixed solutions were simultaneously estimated by using partial least squares Kernel calibration. The analytical recovery of food dyes was 96.7–103.4% and prediction error was 1.4–9.4%. Adsorption isotherms of dyes (at pH 2 and 25°C) from multi‐solute solutions were measured and the maximum adsorption capacities (according to the Jovanovich's model) were 68.4, 40.0, 29.6, and 23.4 mg/g for SY, AR, TT, and BB, respectively. The biochar had a combined retention capacity of 186.9 mg/g for dyes. The effects of dosage of adsorbent, pH and number of competing solutes on %Removal‐retention capacity were studied. The extent of competition between dyes toward the surface was assessed from the magnitudes of competition factors. The competition factors were 0.69, 0.70, 0.75, and 0.76 for AR, TT, BB, and SY, respectively. During adsorption of mixtures from solution, SY manifested stable performance while allura red negatively competed with the rest of the dyes. Partial least squares Kernel calibration was usefully applied for studying competitive adsorption behavior of four food‐dyes with minimum experimental setup.

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“…The empirical Freundlich model, which is based on adsorption by a heterogeneous surface, takes the form :

q_{normale} = K_{normalF} C_{normale}^{normaln}

Section: Methodsmentioning

confidence: 99%

Section: Modeling Equilibrium Adsorption Datamentioning

confidence: 99%

Application of Partial Least Squares‐Kernel Calibration in Competitive Adsorption Studies Using an Effective Chemically Activated Biochar

Issa

Al‐Degs

El‐Sheikh

et al. 2017

CLEAN Soil Air Water

Self Cite

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“…The annual OMW (olive-mill waste) production of Mediterranean olive-growing countries was estimated to ranging from 7 million to over 30 million m 3 . OMSW (olive-mill solid waste) disposal from olive oil mills is a major environmental issue in several olive growing countries in the world.…”

Section: Discussionmentioning

confidence: 99%

“…The organic fraction of the OMSW contains phenolic substances, some nitrogenous compounds, organic acids, sugars, tannins, pectins, carotenoids, and almost all of the water-soluble ingredients of the olives. This make OMSW an important resource for beneficial application in various fields such as sorbent material for heavy metals [3,4], drinking water treatment [5,6]. Besides, its utilization in preparation of activated carbon [7], feeding animals, fuel and charcoal industry [8,9].…”

Section: Introductionmentioning

confidence: 99%

Detoxification of Olive-mill Solid Waste and its Probable Application as Organic Fertilizer

El-Darier¹,

Ahmed²

2015

J Fertil Pestic

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“…Researchers have studied the production of activated carbon from palm-tree cobs (Feng, 2012), plum kernels (Tseng, 2003), cassava peel (RajeshWarisivaraj, 2001), bagasse (Tsai, 2001), jute fiber (Senthilkumaar, 2005), rice husks (Yalcin, 2000), olive stones (El-Sheikh, 2009), date pits (Girgis, 2002), fruit stones and nutshells (Aygun, 2003), and also bamboo activated with potassium hydroxide (KOH) and carbon dioxide (CO 2 ) (Tan, 2008). As for the heavy metals removal from wastewater, several studies were carried out and highlighted that the biosorption of metal cations mainly depends on the interactions of metals with specific groups displayed on the biosorbent surface (Kratochvil, 1998;Bai, 2001).…”

Section: Introductionmentioning

confidence: 99%

The Use of Modified Beetroot Fibers by Sodium Dodecyl Sulfate (SDS) Cleaning Water Contaminated by Organic and Inorganic Compounds

Rima¹,

Rahme²,

Assaker³

2014

JFR

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The beetroot fibers were used to decontaminate water polluted by methylene blue dye (MB), to remove heavy metals from wastewater and to soften hard water. In order to improve the adsorbent performance and to determine the optimum conditions of industrial wastewater cleaning, the effect of fiber particle sizes, initial concentrations of pollutants, pH of aqueous solutions and effluent rates on the cleaning procedure were investigated. Data showed that the efficiency of cleaning increased when fiber particle size decreased (from mm to µm scale). Optimum pH value for adsorption was 6 to 6.5. Maximum metal cations retention or hardness of modified fibers by sodium dodecyl sulfate (SDS) was estimated at 70 mg per gram of fiber; while the maximum retention of methylene blue was found to be 300 mg of dye per gram of fiber. Chemical modification of fibers by an anionic surfactant such as sodium dodecyl sulfate increased the efficiency of the dye elimination by 2-fold when compared to unmodified fibers. The adsorption parameters were determined using Langmuir and Freundlich isotherms.

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Partially pyrolyzed olive pomace sorbent of high permeability for preconcentration of metals from environmental waters

Cited by 30 publications

References 42 publications

Application of Partial Least Squares‐Kernel Calibration in Competitive Adsorption Studies Using an Effective Chemically Activated Biochar

Application of Partial Least Squares‐Kernel Calibration in Competitive Adsorption Studies Using an Effective Chemically Activated Biochar

Detoxification of Olive-mill Solid Waste and its Probable Application as Organic Fertilizer

The Use of Modified Beetroot Fibers by Sodium Dodecyl Sulfate (SDS) Cleaning Water Contaminated by Organic and Inorganic Compounds

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