Copper and zinc sorption by treated oil shale ash

Shawabkeh, Reyad; Al-Harahsheh, Adnan; Al-Otoom, Awni

doi:10.1016/j.seppur.2004.03.006

Cited by 91 publications

(58 citation statements)

References 24 publications

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“…This isotherm developed by Freundlich (1926), describes the equilibrium on heterogeneous surface and does not assume monolayer capacity [7,22]. The isotherm provides an expression involving the surface heterogenity, exponential distribution of active sites, and their energies.…”

Section: Freundlich Isothermmentioning

confidence: 99%

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Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Alkali Activated Fly Ash

et al. 2018

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Abstract. Fly ash is a particulate material produced from coal combustion power plants with major components are silica, alumina, iron oxide, calcium oxide, magnesium oxide, and carbon which are ideal for metal adsorbents. The potential use of fly ash in the wastewater treatment process is obvious because it can be obtained cheaply in large quatities and it can be used as an adsorbent. However, fly ash still shows lower adsorption capacity unless it is activated. In this study, fly ash activated by NaOH 14 M and KOH 14 M solutions. The batch experiments were carried out to study the sorption of copper ions from aqueous on alkali activated fly ash. The influence of initial concentration and contact time were examined at constant pH and dose of adsorbent. The sorption capacity of copper ions increased with the initial concentration and contact time. The sorption capacities followed the order Na1>Ka1>FA. The adsorption isotherm model exhibited that the Langmuir model is very suitable with copper ions adsorption onto fly ash and alkali activated fly ash. Kinetic study shows that adsorption of copper ions onto FA, Na1, and Ka1 follows the pseudo second-order kinetics.

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Section: Freundlich Isothermmentioning

confidence: 99%

“…Among of these methods, adsorption appears to be the most widely used for the removal of heavy metals [5]. There are many low-cost material have been investigated for removal of heavy metals from water such as hardwood and corn straw [6], oil shale ash [7], carrot residues [8], Lonicera japonica flower biomass [9] and lignin [10,11].…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Alkali Activated Fly Ash

et al. 2018

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“…Adsorption is the most extensively used method for the removal of heavy metals [5]. There are many low-cost materials that have been investigated for the removal of heavy metals from water, such as hardwood and corn straw [6], oil shale ash [7], carrot residues [8], Lonicera japonica flower biomass [9], and lignin [10,11].…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Fly Ash

Darmayanti

Notodarmodjo

Damanhuri

2017

J. Eng. Technol. Sci.

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Abstract. The ability of fly ash to adsorp Cu(II) ions from two different coal combustion systems was studied. Optimum removal was found at pH 5, contact time 30 minutes and 60 minutes for Fly Ash 1 and Fly Ash 2, respectively, and dosage 10 g/l. The difference in adsorption capacity between both fly ashes may be due to their carbon fraction and CaO content. The removal of Cu (II) ions was caused by both adsorption and/or precipitation. Precipitation is enhanced by lowering the carbon fraction and increasing the CaO content. The adsorption isotherm showed that the Langmuir model fitted well to the experimental data of both fly ashes. A thermodynamic study was conducted at three different temperatures: 25 °C, 45 °C, and 60 °C. The adsorption processes were spontaneous and endothermic and were more favorable at higher temperature.

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“…Many research efforts were focused on removal of copper ions from the soil and the water system. 15 and a barley by-product from the whisky distilling process. 16 Most of the case, the removal efficiency is approximately in between 67− 95% and drastically reduced with the increase of the copper concentration.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Silica Spheres for Copper Removal

Kim¹,

Park²,

Kang³

2016

Journal of the Korean Chemical Society

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ABSTRACT. Efficient copper removal from water was achieved by using surface modified silica spheres with 3-mercaptopropyltrimethoxysilane (MPTMS) using base catalyst. The surface modification of silica spheres was performed by hydrolysis and condensation reactions of the MPTMS. The characteristic infrared absorption peaks at 2929, 1454, and 1343 cm −1 represent the -CH2 stretching vibration, asymmetric deformation, and deformation, respectively. The absorption peaks at 2580 and 693 cm −1 corresponding the -SH stretching vibration and the C-S stretching vibration indicate the incorporation of MPTMS to the surface of silica spheres. Field emission scanning electron microscope (FESEM) image of the surface modified silica sphere (SMSS) shows nano-particles of MPTMS on the surface of silica spheres. High concentration of copper solution (1000 ppm) was used to test the copper removal efficiency and uptake capacity. The FESEM image of SMSS treated with the copper solution shows large number of copper lumps on the surface of SMSS. The copper concentration drastically decreased with increasing the amount of SMSS. The residual copper concentrations were analyzed using inductively coupled plasma mass spectrometer. The copper removal efficiency and uptake capacity with 1000 ppm of copper solution were 99.99 % and 125 mg/g, respectively.

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Copper and zinc sorption by treated oil shale ash

Cited by 91 publications

References 24 publications

Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Alkali Activated Fly Ash

Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Alkali Activated Fly Ash

Removal of Copper (II) Ions in Aqueous Solutions by Sorption onto Fly Ash

Surface Modification of Silica Spheres for Copper Removal

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