Evaluation of adsorptive performance of dehydrated hazelnut husks carbon for Pb(II) and Mn(II) ions

İmamoğlu, Mustafa; Vural, Ahmet; Altundağ, Hüseyin

doi:10.1080/19443994.2013.834515

Cited by 9 publications

(3 citation statements)

References 40 publications

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“…Considering the interference due to precipitation during the adsorption experiments with AC, the pH PZC value, and the lead speciation diagram, the pH selected for subsequent tests in this study was 5.0. Figure 7 displays the experimental data of Pb(II) adsorption isotherms on both ACL and ACS at three different temperatures (25,35, and 45 ∘ C) and nonlinear fitting of Langmuir and Freundlich models on experimental values. Table 3 shows the model specific constants at different temperatures, which were calculated from the fitting parameters.…”

Section: Effect Of Phmentioning

confidence: 99%

Valorization of Toxic Weed Lantana camara L. Biomass for Adsorptive Removal of Lead

Saini

Suthar

Karmveer

et al. 2017

Journal of Chemistry

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Valorization of Lantana camara L., which is a recognized invasive plant, as a potential source of activated carbon is proposed in this study. Its stem and leaf have been utilized for the preparation of activated carbon (ACL and ACS) by following acid-impregnation technique, followed by thermal treatment. The developed activated carbon samples were characterized for their structural and surface related properties by low-temperature nitrogen adsorption isotherm, SEM techniques, and pHPZC method. The samples show reasonable high surface area and pore volume; nonetheless, these properties are higher in case of ACL as compraed to ACS. Both of these samples developed negative charge on their surface due to acid treatment that resulted in an increase in adsorption at pH > 5. The batch adsorption studies on these samples shows the Pb(II) ion adsorption capacities of ACL and ACS were 36.01 and 32.24 mg·g−1, respectively, at 25°C. The kinetics of adsorption with both the sample systems follow the pseudo-second-order model, whereas the experimental equilibrium isotherm data of ACL and ACS were explained by Freundlich and Langmuir models, respectively. For these samples, the HCl shows maximum desorption with which the recycling test on these samples shows that ACS has better recycling potential over ACL samples.

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Section: Effect Of Phmentioning

confidence: 99%

Valorization of Toxic Weed Lantana camara L. Biomass for Adsorptive Removal of Lead

Saini

Suthar

Karmveer

et al. 2017

Journal of Chemistry

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“…Although activated carbon has a high surface areaaccepted as the main parameter of a good adsorbentits main drawback is its high cost [20,21]. Some natural adsorbents could be obtained cheaply, but their adsorption capacities are very low [22,23].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cd(II) ions onto polyamine-polyurea polymer modified with pyromellitic dianhydride

Özer

Boysan

İmamoğlu

et al. 2016

Desalination and Water Treatment

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In this study, polyamine-polyurea polymer was synthesized using toluendiisocyanate and polyethyleneimine. It was then modified using pyromellitic dianhydride. The polymer so obtained (PMPPP) was used for the adsorption of Cd(II) metal ions from aqueous solutions using a batch adsorption system to simulate the adsorption characteristics of wastewater applications. The effects of pH, dosage, contact time, initial concentration, and temperature were investigated. The optimum pH value was found to be 6.0, and the contact time required to reach equilibrium was 120 min. The Cd(II) adsorption equilibrium data were found to be more in line with the Langmuir equation than the Freundlich model. The maximum adsorption capacity of PMPPP for Cd(II) was calculated to be 94.3 mg g -1 . Kinetics studies showed that Cd(II) adsorption followed the pseudo-second-order equation. Thermodynamic investigations revealed endothermicity, spontaneity, and an increased randomness of Cd(II) adsorption onto PMPPP. Polymer was characterized by Fourier transform infrared spectroscopy, thermogravimetric-differential thermal analysis, scanning electron microscopy, and nitrogen adsorption/desorption isotherms.

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“…Heavy metals such as Cd(II), Cu(II), and Ni(II) began to cause greater damage to human health, the environment, and aqueous media with the development of industry (1)(2)(3)(4)(5). Due to the wellknown toxic effects of these metal ions for human beings, their deter-Although some of them are very sensitive for the determination of low levels of metals, there is still the need for a separation and/or preconcentration procedure before the measurement step due to matrix effects and low levels of the analytes in the samples (9)(10)(11).…”

Section: Introductionmentioning

confidence: 99%

On-line Solid Phase Extraction of Nickel, Copper, and Cadmium Using a Newly Synthesized Polyamine Silica Gel-loaded Mini-column for Flame Atomic Absorption Spectrometric Determination

Sivrikaya¹

2014

At.Spectrosc.

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In this study, polyamine (pentaethylene hexamine) functionalized silica gel (PA-SG) was prepared as a novel sorbent material for on-line preconcentration of Cd(II), Cu(II), and Ni(II) from complex matrices. The PA-SG was characterized by means of elemental analysis and FT-IR spectroscopic techniques. The effective parameters for on-line preconcentration and separation of Cd(II), Cu(II), Ni(II), and FAAS detection were optimized by investigating the effects of sample pH, type, and concentration of eluent, flow rate of sample and eluent, loop volume, and matrix ions. The linear range of the proposed method was between10-200 µg L −1 for each element, with enrichment factors of 39.9, 30.4, and 43.6 and detection limits of 0.19, 0.73, and 0.91 µg L −1 for Cd(II),

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Evaluation of adsorptive performance of dehydrated hazelnut husks carbon for Pb(II) and Mn(II) ions

Cited by 9 publications

References 40 publications

Valorization of Toxic Weed Lantana camara L. Biomass for Adsorptive Removal of Lead

Valorization of Toxic Weed Lantana camara L. Biomass for Adsorptive Removal of Lead

Adsorption of Cd(II) ions onto polyamine-polyurea polymer modified with pyromellitic dianhydride

On-line Solid Phase Extraction of Nickel, Copper, and Cadmium Using a Newly Synthesized Polyamine Silica Gel-loaded Mini-column for Flame Atomic Absorption Spectrometric Determination

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