Adsorption study of heavy metal ions from aqueous solution by nanoparticle of wild herbs

Al-Senani, Ghadah M.; Al-Fawzan, Foziah F.

doi:10.1016/j.ejar.2018.07.006

Cited by 165 publications

(68 citation statements)

References 13 publications

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“…In addition, the adsorbentadsorbate contact time was varied between 30 and 240 min. e e ect of the temperature on the adsorption process was studied in the range of 25 to 70°C for 3 h; the amount of adsorbent and the initial dye concentration used for these experiments were 0.5 g and 10 mg/L, respectively, and 10 mg/L, respectively [21]. All mixtures were ltered using 42 micron Whatman lter paper, and the dye concentrations were determined using a UV/Vis spectrophotometer at the wavelength of 450 nm.…”

Section: Methodsmentioning

confidence: 99%

“…All mixtures were ltered using 42 micron Whatman lter paper, and the dye concentrations were determined using a UV/Vis spectrophotometer at the wavelength of 450 nm. e quantity of dye adsorbed at equilibrium (q e (mg/g)) was calculated using the following equation [21]:…”

Section: Methodsmentioning

confidence: 99%

“…International Journal of Analytical Chemistry respectively, V (L) is the volume of the solution, and m (g) is the mass of adsorbent. e percentage of FD adsorbed from the solution (Ads FD (%)) was calculated using the following equation [21]:…”

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confidence: 99%

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Studies on Adsorption of Fluorescein Dye from Aqueous Solutions Using Wild Herbs

Al-Senani

Al-Kadhi

2020

International Journal of Analytical Chemistry

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The adsorption of fluorescein dye (FD) on wild herb microparticles (Juniperus (JH) and Solenostemma argel (Del) Hayne (SH)) was studied to elucidate the changes in adsorption behavior with various parameters, such as initial concentration, adsorbent dosage, pH, contact time, and temperature. It was determined that the adsorption percentage of JH for FD was as high as 85.5%, which was higher than that of SH (71.9%). The morphologies of JH and SH were analyzed using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) analyses. The JH and SH adsorbents contained different functional groups, which were involved in the binding of the FD molecules during adsorption. The XRD patterns of JH and SH confirmed the presence of a combination of amorphous and crystalline phases in their structures. The SEM images of the surface of JH revealed the presence of deep pores ranging in size from 1.9 to 3.5 μm, while SH contained smaller pores ranging in size from 130 to 350 μm, which could help absorb large quantities of FD. The Freundlich model fitted the adsorption isotherms better than the Langmuir model. The values of the Freundlich equilibrium coefficient and separation factor ranged from 1 to 2 and from 0 to 1, respectively. The maximum adsorption capacities of JH and SH were determined to be 2.91 and 2.565 mg/g, respectively. Four kinetic models were used to analyze the experimental data, and it was determined that the pseudo-second-order kinetic model best described the adsorption process, which involved chemical adsorption and the internal diffusion. Thermodynamic parameters, including the enthalpy, entropy, and Gibbs free energy, were calculated. These parameters indicated that the adsorption of FD on JH was spontaneous and endothermic and the adsorption of FD on SH was unspontaneous and exothermic.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Studies on Adsorption of Fluorescein Dye from Aqueous Solutions Using Wild Herbs

Al-Senani

Al-Kadhi

2020

International Journal of Analytical Chemistry

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“…It may because of the pore diffusion of copper metal on the adsorbent bulk [30]. According to the [31], the equilibrium process of using modified banana peels at 300 minutes, therefore, the adsorption process using the Leucaena luecocephala pods was efficient since it need just a few time to reach equilibrium state.…”

Section: F Effect Of Contact Timementioning

confidence: 99%

Adsorption of Copper (Ii) Ion by Leucaena Leucocephala Pods

Razak*,

Zulkepli,

Idris

2020

IJITEE

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In this work, the efficiency of Leucaena leucocephala pods, an agricultural waste, to remove copper (Cu) ions in aqueous solution by adsorption. Batch mode experiments were carried out at 30 ◦C to study the influence of pH, contact time (t) and dosage on the adsorption of Cu by Leucaena leucocephala pods. The surface behaviour and the composition of the Leucaena leucocephala pods was characterized using pH of point of zero charge (pHPZC), Fourier transform infrared spectroscopy (FTIR). It is shown that Leucaena leucocephala pods adsorbent can effectively remove Cu from aqueous solutions. The best sorption results were obtained at pH 8.0 , 0.75 g dosage and within time 80 min. The FTIR studies indicated was existence of surface hydroxyl, carboxyl and carbonyl groups. Adsorption method was used to successfully execute post adsorption elution of the loaded metal.

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“…[12][13][14][15] Even though activated carbon became the most attractive candidate as an adsorbent, but its cost and the loss of adsorption efficiency after regeneration of the exhausted activated carbon 16,17 moved the investigation toward low-cost green adsorbents. 18,19 This term is applied to low-cost materials originated from agricultural sources and by-products, or even their waste and residues. Among agricultural residues, rice husk with its unique characteristics is a highly attractive choice.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Pb and Cd in rice husk and their immobilization in porous glass‐ceramic structures

Sharifikolouei

Baino

Galletti

et al. 2019

Int J Applied Ceramic Tech

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Rice husk, an agricultural waste, is abundantly available in many countries such as China, India, Brazil, US, and South East Asia. Despite the massive production of rice husk, it is mainly disposed to landfill. In this work, utilization of rice husk for a potential waste-water treatment is evaluated, along with subsequent encapsulation of the adsorbed heavy metals (Pb and Cd) inside a porous glass-ceramic. Vitrified bottom ash (another source of waste) was mixed with foaming agents in different weight ratios (40:60, 50:50, and 60:40) to prepare a glass matrix for encapsulation of Pb-/ Cd-loaded rice husk. It was shown that using 40 wt% vitrified bottom ash with 60 wt% foaming agents leads to a foam glass with the best pore size distribution. Therefore, this batch was further mixed with 70 volume% (5 wt%) heavy metal-loaded rice husk and was heat-treated at 750°C for 3 hours. The final glass-ceramic porous structure was char acterized using SEM, XRD, compression test, and it was shown that it is safe to be used as it passes the EN12457-2 leaching test.

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Adsorption study of heavy metal ions from aqueous solution by nanoparticle of wild herbs

Cited by 165 publications

References 13 publications

Studies on Adsorption of Fluorescein Dye from Aqueous Solutions Using Wild Herbs

Studies on Adsorption of Fluorescein Dye from Aqueous Solutions Using Wild Herbs

Adsorption of Copper (Ii) Ion by Leucaena Leucocephala Pods

Adsorption of Pb and Cd in rice husk and their immobilization in porous glass‐ceramic structures

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