Kinetic, isothermal and thermodynamic studies on Th(IV) adsorption by different modified activated carbons

Öter, Çiğdem; Zorer, Özlem Selçuk

doi:10.1007/s10967-019-06830-0

Cited by 13 publications

(7 citation statements)

References 39 publications

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“…This indicates that the base material, a residue, can be easily converted into an adsorbent material, extremely efficient and low-cost [15]. This adsorbent material must be activated before its use and one of the methods is the chemical activation with nitric acid, phosphoric acid, potassium hydroxide, and/or potassium carbonate, or physical activation with steam, carbon dioxide, ozone, and other procedures and techniques can be used to activate carbon-based materials [16][17][18][19][20][21][22]. Some factors, such as the cost and time spent synthesizing the material, the required equipment, the degree of difficulty of the synthesis, the type of reagent used and its toxicity, and, most importantly, the characteristics of the material produced, must be considered before selecting an activation method [13,23].…”

Section: Introductionmentioning

confidence: 99%

Production of nanostructured crystalline composite using residual ashes from flocculated sludge burning process in a poultry slaughterhouse wastewater treatment system

et al. 2022

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Nanostructured crystalline composite (activated carbon) was synthesized from residual ashes of the burning process of the sludge generated in the flotation step of a poultry slaughterhouse and was used for Allura red dye adsorption. The ashes were chemically activated using two types of reagents, H 2 O 2 and H 3 PO 4 , and the structure, morphology, and surface of the adsorbents were characterized by different techniques such as scanning electron microscopy with energy dispersive spectroscopy (SEM/ EDS), N 2 adsorption/desorption isotherms with Brunauer-Emmett-Teller (BET) method and Barret-Joyner-Hallenda (BJH) method, Fourier transform infrared spectroscopy (MID/FTIR), X-ray diffraction (XRD), and the point of zero charge (PZC). The adsorbent synthesized with H 3 PO 4 at 400 ºC displayed the best performance in removing dye molecules in 10 mg.L -1 solution, with a removal rate of approximately 100% when using a concentration of 2 g.L -1 in particle size of 0.42 mm. Besides that, the adsorbent synthesized with H 3 PO 4 had a particle diameter of approximately 15 Å, a size corresponding to the nanometer range, presented a crystallinity structure with well-defined phases such as quartz and the major elements in the composition were carbon and silicon. The surface area of the ashes enlarged from 14.71 to 448.1 m 2 .g -1 when H 3 PO 4 was used as an activator, producing a high-quality adsorbent, with an excellent cost-benefit, being it possible to be produced for a price of 9.35 USD.kg -1 , a price lower than the commercial activated carbon, making it a promising candidate for application in an industrial environment.

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Section: Introductionmentioning

confidence: 99%

Production of nanostructured crystalline composite using residual ashes from flocculated sludge burning process in a poultry slaughterhouse wastewater treatment system

et al. 2022

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“…Previous studies have demonstrated that SLS exposure in aquatic organisms is manifested by oxidative stress, apoptosis, DNA damage, neurophysiological (7) and hematological effects, affected swimming performance, and changes in body morphology. In a limited number of studies, detergents were reported to have toxic and allergic effects, and cause the development of cancer cells over time (1,8,9).…”

Section: Introductionmentioning

confidence: 99%

Toxic Effects of Sodium Lauryl Sulfate on Antioxidant Defense System and DNA Damage in Fish Primary Hepatocyte Cultures

Yeltekin

Oğuz

2022

Macedonian Veterinary Review

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Synthetic detergents which have a major role in environmental pollution accumulate over time and reach levels that harm nature. The surfactants which are abundantly used as cleaning components are discharged into the Van Lake with the sewage water. These chemicals accumulating in the lake may reach a level that could affect the only fish species of the lake, the Van fish. This study aimed to determine the antioxidant levels of Van fish hepatocyte cell culture medium treated with sodium lauryl sulphate (SLS) and to assess the DNA damage. The effect of SLS was assessed by its dose (1x10−5, 1x10-6, 1x10−7 M) and treatment time (24 h, 48 h). Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), malondialdehyde (MDA), and DNA damage (8-OHdG) were determined in the SLS hepatocyte culture. SOD and GSH-Px were higher on 24 h and 48 h compared to the control group. A significant increase was observed in CAT level in the first 24 h, especially in 1x10−6 and 1x10-5 M concentration. At 48 h, it was observed that the CAT level decreased significantly as the concentration increased. It was determined that MDA and 8-OHdG levels increased depending on concentration and time. In conclusion, different concentrations of SLS affected antioxidant levels in the primary hepatocyte culture of Van Fish and were found to cause an increase in the levels of MDA and 8-OHdG.

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“…Nuclear energy production generates many radionuclides that must be managed safely to maintain the safety of humans and the environment around them. To solve this serious problem, modern technologies must be used and developed to remove radioactive species from the environment (mainly from wastewater) [1][2][3][4][5][6][7]. These combined reasons led to a general determination to remove radioactive isotopes and nuclear materials from wastewater before discharging theme.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of a material containing both micropores and mesopores as a dual-function adsorbent for removal of cationic and anionic species from aqueous solutions

Ali

Abdel-Galil

Hamed

2022

Arab Journal of Nuclear Sciences and Applications

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The sorption potency of any material toward different radionuclides is closely related to porous structures and the surface functional groups. In this research, we report the process conditions to attain a new low-cost carbonaceous adsorbent from mint waste (CAMW) containing both micro-and meso-pores. The new sorbent was analyzed using various analytical techniques. From the study of surface properties, it was found that synthesized material possesses a high surface-area (BET) of 735.75 m 2 /g, Langmuir surface area of 1015.0 m 2 /g, total pore volume of 0.596 cm 3 /g, and the average pore diameter of 0.60 nm with a reasonable yield, 32.4%. Radionuclides contamination in the aquatic environment has become a dangerous threat today. Removal and recovery of these species (anionic and cationic radionuclides) before extrusion into the environment is essential for the safety of organisms. Therefore, we evaluated removal efficiencies of this new carbonaceous material as a dual-function sorbent for the retention of cations (Cs(I), Co(II), Sr(II) and Eu(III)) and anions (Cr(VI) and Mo(VI)) from aqueous solutions. Sorptive removal of various radionuclides (cationic and anionic species) from environmental samples confirmed the validity of results gained in these studies. All these values indicate that prepared CAMW possesses excellent adsorption capacity for both cationic and anionic radionuclides and can generally be considered as an advanced adsorbent.

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Kinetic, isothermal and thermodynamic studies on Th(IV) adsorption by different modified activated carbons

Cited by 13 publications

References 39 publications

Production of nanostructured crystalline composite using residual ashes from flocculated sludge burning process in a poultry slaughterhouse wastewater treatment system

Production of nanostructured crystalline composite using residual ashes from flocculated sludge burning process in a poultry slaughterhouse wastewater treatment system

Toxic Effects of Sodium Lauryl Sulfate on Antioxidant Defense System and DNA Damage in Fish Primary Hepatocyte Cultures

Preparation and Evaluation of a material containing both micropores and mesopores as a dual-function adsorbent for removal of cationic and anionic species from aqueous solutions

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