Removal of Cs+, Sr2+ and Co2+ by activated charcoal modified with Prussian blue nanoparticle (PBNP) from aqueous media: kinetics and equilibrium studies

2020 ◽  
Vol 324 (1) ◽  
pp. 189-201 ◽  
Author(s):  
Mahmoud M. S. Ali ◽  
N. M. Sami ◽  
A. A. El-Sayed
Keyword(s):  
Prussian Blue ◽  
Activated Charcoal ◽  
Aqueous Media ◽  
Equilibrium Studies

Ouricuri (Syagrus coronata) fiber: a novel biosorbent to remove methylene blue from aqueous solutions

2016 ◽  
Vol 75 (1) ◽  
pp. 106-114 ◽  
Author(s):  
Lucas Meili ◽  
Társila Santos da Silva ◽  
Daniely Carlos Henrique ◽  
João Inácio Soletti ◽  
Sandra Helena Vieira de Carvalho ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Experimental Design ◽  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Fiber Diameter ◽  
Aqueous Media ◽  
Process Efficiency ◽  
Maximum Adsorption Capacity ◽  
Equilibrium Studies

In this work, the potential of ouricuri (Syagrus coronata) fiber as a novel biosorbent to remove methylene blue (MB) from aqueous solutions was investigated. The fiber was prepared and characterized according to the fundamental features for adsorption. A 23 experimental design was used to evaluate the effects of adsorbent dosage (M), fiber diameter (D) and agitation (A) on the adsorption capacity. In the more adequate conditions, kinetic and equilibrium studies were performed. The experimental design results showed that M = 10 g L−1), D = 0.595 mm and A = 200 rpm were the more adequate conditions for MB adsorption. Based on the kinetic study, it was found that the adsorption process was fast, being the equilibrium was attained at about 5 min, with 90% of color removal. The isotherm was properly represented by the Sips model, and the maximum adsorption capacity was 31.7 mg g−1. In brief, it was demonstrated that ouricuri fiber is an alternative biosorbent to remove MB from aqueous media, taking into account the process efficiency and economic viewpoint.

In VitroBinding characteristics for cesium of two qualities of prussian blue, activated charcoal and Resonium-A

1992 ◽  
Vol 30 (2) ◽  
pp. 215-222 ◽  
Author(s):  
J. M. Verzijl ◽  
J. C.A. Joore ◽  
A. van Dijk ◽  
J. H. Glerum ◽  
T. J.F. Savelkoul ◽  
...  
Keyword(s):  
Prussian Blue ◽  
Activated Charcoal

Comparative Efficacy of Thallium Adsorption by Activated Charcoal, Prussian Blue, and Sodium Polystyrene Sulfonate

1999 ◽  
Vol 37 (7) ◽  
pp. 833-837 ◽  
Author(s):  
Robert S. Hoffman ◽  
Robert Hoffman ◽  
Jane A. Stringer ◽  
Rebecca S. Feinberg ◽  
Lewis R. Goldfrank
Keyword(s):  
Prussian Blue ◽  
Activated Charcoal ◽  
Sodium Polystyrene Sulfonate ◽  
Polystyrene Sulfonate ◽  
Comparative Efficacy

scholarly journals Removal of naphthenic acids using activated charcoal: Kinetic and equilibrium studies

2018 ◽  
Vol 36 (7-8) ◽  
pp. 1405-1421 ◽  
Author(s):  
Natália F Campos ◽  
Celmy MBM Barbosa ◽  
Joan M Rodríguez-Díaz ◽  
Marta MMB Duarte
Keyword(s):  
Activated Charcoal ◽  
Naphthenic Acid ◽  
Naphthenic Acids ◽  
Model Mixture ◽  
Adsorptive Capacity ◽  
Order Kinetic ◽  
Equilibrium Studies ◽  
Aviation Kerosene ◽  
Equilibrium Study ◽  
Pseudo Second Order

This study proposes the use of activated charcoal made from Umbaúba wood as an adsorbent for the removal of naphthenic acid in an aviation kerosene model mixture. The activated charcoal was characterised as mesoporous with a carbon graphite profile and presented pHpzc equal to 10.5. The best working conditions were obtained for activated charcoal levels of <0.09 mm and 300 r min−1. The system reached the equilibrium after 360 min, without significant statistical difference for the pseudo-first- and pseudo-second-order kinetic models. The Weber–Morris and Boyd models corroborated the conclusion that adsorption is not controlled only by the intraparticle diffusion step. For the equilibrium study, the adsorptive capacity obtained was of 1.1 g g−1, with the Brunauer–Emmett–Teller model better correlating with the experimental data. Given the results obtained, the activated charcoal demonstrated to have a remarkable potential for removing naphthenic acid in an aviation kerosene model mixture.

scholarly journals Removal of Toxic Copper Ion from Aqueous Media by Adsorption on Fly Ash-Derived Zeolites: Kinetic and Equilibrium Studies

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3468
Author(s):  
Gabriela Buema ◽  
Luisa-Maria Trifas ◽  
Maria Harja
Keyword(s):  
Fly Ash ◽  
Adsorption Capacity ◽  
Contact Time ◽  
Aqueous Media ◽  
Copper Ion ◽  
Order Kinetic ◽  
Adsorption Parameters ◽  
Equilibrium Studies ◽  
Copper Adsorption ◽  
Ion Removal

This study investigated the adsorption capacity of one material based on the treatment of fly ash with sodium hydroxide as a novel adsorbent for toxic Cu2+ ion removal from aqueous media. The adsorbent was obtained through direct activation of fly ash with 2M NaOH at 90 °C and 6 h of contact time. The adsorbent was characterized by recognized techniques for solid samples. The influence of adsorption parameters such as adsorbent dose, copper initial concentration and contact time was analyzed in order to establish the best adsorption conditions. The results revealed that the Langmuir model fitted with the copper adsorption data. The maximum copper adsorption capacity was 53.5 mg/g. The adsorption process followed the pseudo-second-order kinetic model. The results indicated that the mechanism of adsorption was chemisorption. The results also showed the copper ion removal efficiencies of the synthesized adsorbents. The proposed procedure is an innovative and economical method, which can be used for toxicity reduction by capitalizing on abundant solid waste and treatment wastewater.

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