Competitive adsorption of arsenic and mercury on nano-magnetic activated carbons derived from hazelnut shell

2022 ◽  
Author(s):  
Mojtaba Zabihi ◽  
Maryam Omidvar ◽  
Alireza Motavalizadehkakhky ◽  
Rahele Zhiani
Keyword(s):  
Competitive Adsorption ◽  
Activated Carbons ◽  
Hazelnut Shell

Effect of air bubbling on atrazine adsorption in water by powdered activated carbons – competitive adsorption of impurities

2005 ◽  
Vol 46 (1-2) ◽  
pp. 79-87 ◽  
Author(s):  
Yue Jia ◽  
Rong Wang ◽  
Anthony G. Fane ◽  
William B. Krantz
Keyword(s):  
Competitive Adsorption ◽  
Activated Carbons

scholarly journals Removal Effect of Atrazine in Co-Solution with Bisphenol A or Humic Acid by Different Activated Carbons

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2558 ◽  
Author(s):  
Zhansheng Wu ◽  
Xinhui Wei ◽  
Yongtao Xue ◽  
Xiufang He ◽  
Xia Yang
Keyword(s):  
Humic Acid ◽  
Bisphenol A ◽  
Adsorption Kinetics ◽  
Competitive Adsorption ◽  
Activated Carbons ◽  
Second Order ◽  
Adsorption Behavior ◽  
Single Solution ◽  
Pseudo Second Order ◽  
Kinetics Of

Activated carbons (ACs) based on apricot shells (AS), wood (W), and walnut shells (WS) were applied to adsorb atrazine in co-solutions. To study the effect of Bisphenol A (BPA) on the adsorption behavior of atrazine, the adsorption performance of ACs for BPA in single solution was studied. The results demonstrated that the adsorption kinetics of BPA fitted the pseudo-second-order model, the adsorption isotherms of BPA followed the Langmuir model. Meanwhile, the adsorption kinetics of atrazine fitted the pseudo-second-order kinetics model and the isotherm was consistent with the Freundlich model both in single solution and co-solution. In addition, competitive adsorption was observed when atrazine coexisted with BPA or humic acid. For the adsorption capacity, the adsorption amount of ASAC, WAC, and WSAC for atrazine obviously decreased by 18.0%, 30.0%, and 30.3% in the presence of BPA, respectively, which was due to the π−π interactions, hydrophobic interactions, and H-bonds, resulting in the competitive adsorption between atrazine and BPA. This study contributes to the further understanding of the adsorption behavior for atrazine in co-solution.

Equilibrium, isotherm, kinetic and thermodynamic studies for removal of tetracycline antibiotics by adsorption onto hazelnut shell derived activated carbons from aqueous media

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 109983-109991 ◽  
Author(s):  
Hong-Tao Fan ◽  
Li-Qi Shi ◽  
Hua Shen ◽  
Xi Chen ◽  
Kun-Peng Xie
Keyword(s):  
Phosphoric Acid ◽  
Activated Carbons ◽  
Agricultural Waste ◽  
Aqueous Media ◽  
Acid Activation ◽  
Equilibrium Isotherm ◽  
Tetracycline Antibiotics ◽  
Phosphoric Acid Activation ◽  
Hazelnut Shell ◽  
Kinetic And Thermodynamic Studies

Hazelnut shell, an agricultural waste, was used to prepare activated carbons by phosphoric acid activation.

scholarly journals Ni(II) and Cd(II) Simple and Competitive Adsorption on Activated Carbon Oxidized. Influence of the Oxidant Agents HO and NaClO

2015 ◽  
Vol 9 (1) ◽  
pp. 20-27
Author(s):  
Miguel A. Sánchez ◽  
Paola Rodríguez-Estupiñan ◽  
Liliana Giraldo ◽  
Juan Carlos Moreno-Piraján
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Adsorption Isotherms ◽  
Competitive Adsorption ◽  
Gas Adsorption ◽  
Activated Carbons ◽  
Bet Surface Area ◽  
Textural Parameters ◽  
Chemical Groups ◽  
Langmuir And Freundlich Models

In this study, granular activated carbon, GAC, was modified by oxidation with HO and NaClO aqueous solutions and heat treatment at 900°C. The N adsorption isotherms at − 196°C and SEM and FTIR results were used to characterize the properties of the prepared ACs. Textural parameters such as BET surface area and pore volumes were assessed by gas adsorption. The BET surface area values of solids were between 687 and 876 m2g-1. Additionally, immersion enthalpies of activated carbons in benzene, water, hydrochloric acid and sodium hydroxide solutions and Ni(II) and Cd(II) solutions of 500 mgL were determined, with values between 32 and 145 Jg-1. Ni(II) and Cd(II) adsorption isotherms were determined at pH 6 on activated carbons and competitive adsorption tests were realized between the two ions. The results show that in the tests carried out, the adsorption capacity decreased when the content of chemical groups on the surface also decreased. Finally, the experimental results of adsorption from the solution were adjusted to the Langmuir and Freundlich models and the first model was found to be better. With maximum adsorption capacities, the values for Ni(II) were between 3.99 and 64.9 mgg-1 and for Cd(II) were between 2.61 and 55.2 mgg-1. The values of the competitive adsorption ions present in the solution, Ni(II) and Cd(II), in the activated carbons, decreased compared to those obtained in the simple adsorption, indicating the effect of the an ion competitive presence in adsorption another.

scholarly journals Adsorption of Copper(II) Ions onto Hazelnut Shell and Apricot Stone Activated Carbons

2010 ◽  
Vol 28 (4) ◽  
pp. 327-340 ◽  
Author(s):  
Didem Özçimen ◽  
Ayşegül Ersoy-Meriçboyu
Keyword(s):  
Activated Carbons ◽  
Hazelnut Shell

scholarly journals Competitive adsorption of ibuprofen and amoxicillin mixtures from aqueous solution on activated carbons

2015 ◽  
Vol 449 ◽  
pp. 252-260 ◽  
Author(s):  
Hayet Mansouri ◽  
Rocio J. Carmona ◽  
Alicia Gomis-Berenguer ◽  
Souad Souissi-Najar ◽  
Abdelmottaleb Ouederni ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Competitive Adsorption ◽  
Activated Carbons

Competitive adsorption of the herbicide fluroxypyr and tannic acid from distilled and tap water on activated carbons and their thermal desorption

Adsorption ◽  
2012 ◽  
Vol 18 (3-4) ◽  
pp. 173-179 ◽  
Author(s):  
C. Moreno-Castilla ◽  
M. V. López-Ramón ◽  
L. M. Pastrana-Martínez ◽  
M. A. Álvarez-Merino ◽  
M. A. Fontecha-Cámara
Keyword(s):  
Tannic Acid ◽  
Thermal Desorption ◽  
Competitive Adsorption ◽  
Activated Carbons ◽  
Tap Water

Competitive adsorption of a benzene–toluene mixture on activated carbons at low concentration

Carbon ◽  
2006 ◽  
Vol 44 (8) ◽  
pp. 1455-1463 ◽  
Author(s):  
M.A. Lillo-Ródenas ◽  
A.J. Fletcher ◽  
K.M. Thomas ◽  
D. Cazorla-Amorós ◽  
A. Linares-Solano
Keyword(s):  
Competitive Adsorption ◽  
Activated Carbons ◽  
Low Concentration ◽  
Benzene Toluene
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