Polymer Supported Humic Acid for Separation and Preconcentration of Thorium(IV)

Erdoğan, Serkan; Merdıvan, Melek; Hamamcı, Candan; Akba, Osman; Baysal, Akın

doi:10.1081/al-200031134

Cited by 37 publications

(23 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This region shows the degree of saturation of the sample, revealing a low percentage of aliphatic carbons in the CHA. The sharp band at 1701 cm -1 was attributed to the C=O stretching vibrations due to carboxylic groups [20]. The strong band detected at 1608 cm -1 indicated the presence of aromatic ring C=C stretching [21].…”

Section: Resultsmentioning

confidence: 99%

Characterization of the Coal Humic Acids From the Candiota Coalfield, Brazil

JL¹,

DM²,

VS³

et al. 2012

Int J of Agri Scie

View full text Add to dashboard Cite

Abstract-Humic acid (HA) is a principal component of humic substances, which are the major organic constituents of soil, peat, coal, many upland streams, dystrophic lakes and ocean water. HA has an important impact on a variety of environment processes. This work aimed to characterize the HA extracted and purified from the Candiota coalfield (Brazil) by visible (VIS), Fourier transform infrared (FTIR), energy dispersive X-ray (EDX), inductively coupled plasma absorption emission (ICP-AES), and X-ray diffraction (XRD) spectroscopies, thermogravimetry (TG), differential thermal analysis (DTA), and scanning electron microscopy (SEM). The results of these analyses showed that Candiota HA presents a high degree of humification, which is considered to be type A with a turbostratic structure. The elemental analysis (EDX/ ICP-AES) indicated the presence of low concentrations of heavy metals.

show abstract

Section: Resultsmentioning

confidence: 99%

Characterization of the Coal Humic Acids From the Candiota Coalfield, Brazil

JL¹,

DM²,

VS³

et al. 2012

Int J of Agri Scie

View full text Add to dashboard Cite

show abstract

“…Sorption properties of bivalent cations of M 2+ (Cu, Pb and Zn) and trivalent cations of M 3+ (Fe, Al) with humic acids from oxidized coals in aqueous solution were studied in [3]. The effect of pH, concentration of metal ions and humic acids on the process of interaction of metal with humic acids was studied.…”

Section: Introductionmentioning

confidence: 99%

Removability Efficiency of Heavy Metals with Modified Humate from Aqueous Media

Taubayeva¹,

Dzhusipbekov²,

Nurgalieva³

et al. 2014

Eur Chem Tech J

View full text Add to dashboard Cite

The main aim of this work was to study the possibility of using amine-modified humate as a sorbent for the purification of water from heavy metal ions (Cu&Co). One of the effective methods of creating new sorbents of humic acids is chemical modification based on the high reactivity of the functional groups in the composition of humic acids. The possibility of modification of humic acid with bis(3-aminopropyl) amine was illustrated. Modification was carried out with the aim of increasing its sorption capacity. Metalhumate complexes were also obtained by an ion-exchange procedure with modified humate (Mod-Hum) by employing metal salts such as Cu(CH 3 COO) 2 ·H 2 O, Co(CH 3 COO) 2 ·4H 2 O. Maximum sorption percentages of Mod-Hum achieved were about 99.2% for Cu (II) and 90% for Co (II). The sorption degree depending on pH changes was studied in the range of 2 to 8, the sorption ability of the sorbents was stated to increase with the increase in pH. The degree of sorption of copper (ІІ) on Mod-Hum in the studied range of рН 5 was higher and of cobalt (II) for which the sorption is optimal at higher values (рН 7-8). It is stated that sorption degree increases with the increase in time from 15 min to 2 h. The adsorption of toxic metal ions with Mod-Hum was measured by atomic absorption spectroscopy (AAS). The experimental results on determination of the adsorption isotherm were evaluated with the Langmuir equation. It is shown that the sorbent develops a high sorption capacity in regard to ions of Cu (18.42 mg/g) and Со (16.25 mg/g). All the obtained complex compounds were analyzed and characterized by FT infrared spectroscopy (FTIR), scanning electron microscopy (SEM).

show abstract

“…The combustion of fuel is known to generate emissions of potentially hazardous elements, which may cause a wide range of health problems (Karayigit et al, 2000;Isik et al, 2006;Erdogan et al,2007;Duz et al, 2008;Saydut et al, 2008a). Some elements in fuel combustion ash products are potentially hazardous to the environment and some of them have high carcinogenic potency.…”

Section: Introductionmentioning

confidence: 99%

Chemical fractionation of nickel in asphaltite based bottom ash

Aydın

Kılınç

et al. 2013

Chemical Speciation & Bioavailability

Self Cite

View full text Add to dashboard Cite

Asphaltite, originating from petroleum, contains many kinds of mineral elements derived from its generation. These elements exist in different forms which may change throughout the asphaltite combustion process. Chemical fractionation of nickel (Ni) is necessary for risk assessment of asphaltite based bottom ash (ABBA). This study presents the concentration and fractionation of Ni in bottom ash of asphaltite (Sirnak, SE Anatolia, Turkey). Determination of total Ni in ash was performed in two stage microwave-acid digestion followed by inductively coupled plasma optical emission spectrometry (ICP-OES). Dry ashing is used for the almost complete elimination of organic materials prior to analyte determination. A seven-step sequential extraction process to fractionation of Ni from ABBA was investigated. Total Ni concentration in the ABBA was found to be 568.15 mg kg -1 .

show abstract

Polymer Supported Humic Acid for Separation and Preconcentration of Thorium(IV)

Cited by 37 publications

References 23 publications

Characterization of the Coal Humic Acids From the Candiota Coalfield, Brazil

Characterization of the Coal Humic Acids From the Candiota Coalfield, Brazil

Removability Efficiency of Heavy Metals with Modified Humate from Aqueous Media

Chemical fractionation of nickel in asphaltite based bottom ash

Contact Info

Product

Resources

About