Adsorption of bisphenol A and 2,4,5-trichlorophenol onto organo-acid-activated bentonite from aqueous solutions in single and binary systems

2017 ◽  
Vol 66 ◽  
pp. 383-395 ◽  
Author(s):  
Nassima Djebri ◽  
Mokhtar Boutahala ◽  
Nacer-Eddine Chelali ◽  
Nadia Boukhalfa ◽  
Zerroual Larbi
Keyword(s):  
Bisphenol A ◽  
Aqueous Solutions ◽  
Binary Systems ◽  
Activated Bentonite ◽  
Single And Binary Systems

scholarly journals Sorption of Hg(II) and Pb(II) Ions on Chitosan-Iron(III) from Aqueous Solutions: Single and Binary Systems

Polymers ◽  
2018 ◽  
Vol 10 (4) ◽  
pp. 367 ◽  
Author(s):  
Byron Lapo ◽  
Hary Demey ◽  
Jessenia Zapata ◽  
Cristhian Romero ◽  
Ana Sastre
Keyword(s):  
Aqueous Solutions ◽  
Binary Systems ◽  
Single And Binary Systems

scholarly journals Adsorption of Lead and Nickel on to Expanded Graphite Decorated with Manganese Oxide Nanoparticles

2019 ◽  
Vol 9 (24) ◽  
pp. 5375 ◽  
Author(s):  
Quoc Cuong Do ◽  
Seonmi Choi ◽  
Hyojeon Kim ◽  
Seoktae Kang
Keyword(s):  
Heavy Metals ◽  
Aqueous Solutions ◽  
Manganese Oxide ◽  
Adsorption Capacity ◽  
Binary Systems ◽  
Expanded Graphite ◽  
Oxide Nanoparticles ◽  
Isothermal Adsorption ◽  
Manganese Oxide Nanoparticles ◽  
Single And Binary Systems

In this study, expanded graphite (EG) was decorated with manganese oxide nanoparticles (MONPs) by the hydrothermal method, and the newly formed composite (MONPs-EG) was applied as adsorbent for the removal of heavy metals from aqueous solutions. The comparative and competitive adsorption of Pb2+ and Ni2+ (0.01–1.00 mM) on MONPs-EG was investigated. Data from isothermal adsorption of single and binary systems suggested that both Pb2+ and Ni2+ were well described by the Langmuir isotherm, and the maximum adsorption capacities at 298 K were calculated at 0.278 and 0.113 mmol/g for Pb2+ and Ni2+, respectively. In binary systems, a dramatic decrease in adsorption capacity of Ni2+ was observed, while the adsorption capacity of Pb2+ was almost stable, indicating the favorable adsorption of Pb2+ over Ni2+ onto the prepared adsorbent. Kinetics studies of single and binary systems showed that a pseudo-second order model could explain the adsorption processes well. Thermodynamic analysis results demonstrated that the adsorption of these metal ions on the prepared adsorbent is spontaneous and exothermic in nature. The adsorption capacity of MONPs-EG increased significantly in the presence of humic acids. Overall, the results of this study suggest that MONPs-EG can be used effectively as an adsorbent for heavy metals removal from aqueous solutions.

Sorption of Bisphenol A in Aqueous Solutions on Irradiated and as-Grown Multiwalled Carbon Nanotubes

2018 ◽  
Vol 69 (5) ◽  
pp. 1233-1239
Author(s):  
Raluca Madalina Senin ◽  
Ion Ion ◽  
Ovidiu Oprea ◽  
Rusandica Stoica ◽  
Rodica Ganea ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Bisphenol A ◽  
Aqueous Solutions ◽  
Adsorption Capacity ◽  
Multiwalled Carbon Nanotubes ◽  
Adsorption Process ◽  
Sorption Process ◽  
Multiwalled Carbon ◽  
Before And After ◽  
Kinetic Sorption

In this study, non-irradiated and weathered multiwalled carbon nanotubes (MWCNTs) obtained through irradiation, were studied as adsorbents for BPA, both nanomaterials being characterized before and after the adsorption process. The objectives of our investigation were to compare the characteristics of non-irradiated and irradiated MWCNTs, to evaluate the adsorption capacity of BPA by pristine and irradiated MWCNTs and to determine the variation of the kinetic, sorption and thermodynamic parameters during sorption process using both sorbents.

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