scholarly journals Removal Efficiency, Adsorption Kinetics and Isotherms of Phenolic Compounds from Aqueous Solution Using Rice Bran Ash

2013 ◽  
Vol 25 (7) ◽  
pp. 3871-3878 ◽  
Author(s):  
Abdolmajid Gholizadeh ◽  
Majid Kermani ◽  
Mitra Gholami ◽  
Mahdi Farzadkia ◽  
Kamyar Yaghmaeian
Keyword(s):  
Aqueous Solution ◽  
Phenolic Compounds ◽  
Removal Efficiency ◽  
Rice Bran ◽  
Adsorption Kinetics ◽  
Kinetics And Isotherms

Adsorption Kinetics and Isotherms of Arsenic(V) from Aqueous Solution Onto Ni0.5Zn0.5Fe2O4 Nanoparticles

2013 ◽  
Vol 13 (4) ◽  
pp. 2835-2841 ◽  
Author(s):  
Ruijiang Liu ◽  
Yi Lu ◽  
Xiangqian Shen ◽  
Xinchun Yang ◽  
Xuewen Cui ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Kinetics And Isotherms

Synthesis of N-Doped Magnetic Mesoporous Carbon Composites for Adsorption of Ag(I) in Aqueous Solution

2021 ◽  
Vol 21 (3) ◽  
pp. 1462-1473
Author(s):  
Wen-Juan Zhang ◽  
Bo-Bo Zhang ◽  
Xue-Yan Du ◽  
You-Liang Wang ◽  
Yu-Long Fei ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Adsorption Kinetics ◽  
Mesoporous Carbon ◽  
Carbon Sources ◽  
Mesoporous Structure ◽  
Formaldehyde Resin ◽  
Pseudo Second Order ◽  
Kinetics And Isotherms ◽  
Magnetic Mesoporous Carbon

In this work, a novel N-doped magnetic mesoporous carbon (NMC) composite (Fe3O4/NMC) was synthesized by a two-step process. First, NMC was prepared by a template method using a melamine formaldehyde resin as nitrogen and carbon sources, and then, Fe3O4 nanoparticles were loaded into the as-prepared NMC via in-situ coprecipitation process. The morphology, structure, and magnetic properties of Fe3O4/NMC were characterized and its adsorption properties were investigated. It can be found that Fe3O4/NMC with saturation magnetization of 20 emu · g−1 features a mesoporous structure, and its specific surface area reaches 513 m2 · g−1. These two excellent specificities are propitious to the adsorption and separation of Ag(I) from aqueous solution. The adsorption behavior of Fe3O4/NMC nanocomposite has been investigated by adsorption kinetics and isotherms adsorption analyses as well. The adsorption isotherm and the adsorption kinetics of Ag(I) onto Fe3O4/NMC agrees well with Langmuir model and pseudo-second-order model, respectively. Moreover, the Fe3O4/NMC was easily to recovery by applied magnetic field, the adsorption capacity of Fe3O4/NMC was about 90.3% of the initial saturation adsorption capacity after five continuous uses.

Comparative Bio-sorption of Cadmium and Nickel Ions from Aqueous Solution onto Fibers of Date Palm using Fluidized Bed Column

2019 ◽  
Vol 70 (5) ◽  
pp. 1507-1512
Author(s):  
Baker M. Abod ◽  
Ramy Mohamed Jebir Al-Alawy ◽  
Firas Hashim Kamar ◽  
Gheorghe Nechifor
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Date Palm ◽  
Operating Conditions ◽  
Initial Concentration ◽  
Bed Height

The aim of this study is to use the dry fibers of date palm as low-cost biosorbent for the removal of Cd(II), and Ni(II) ions from aqueous solution by fluidized bed column. The effects of many operating conditions such as superficial velocity, static bed height, and initial concentration on the removal efficiency of metal ions were investigated. FTIR analyses clarified that hydroxyl, amine and carboxyl groups could be very effective for bio-sorption of these heavy metal ions. SEM images showed that dry fibers of date palm have a high porosity and that metal ions can be trapped and sorbed into pores. The results show that a bed height of 6 cm, velocity of 1.1Umf and initial concentration for each heavy metal ions of 50 mg/L are most feasible and give high removal efficiency. The fluidized bed reactor was modeled using ideal plug flow and this model was solved numerically by utilizing the MATLAB software for fitting the measured breakthrough results. The breakthrough curves for metal ions gave the order of bio-sorption capacity as follow: Cd(II)]Ni(II).

Adsorption of Ni2+ in aqueous solution by KMnO4 modified biomass: investigation on adsorption kinetics and modification mechanism

2021 ◽  
pp. 1-12
Author(s):  
Yuxing Tong ◽  
Qunshan Yan ◽  
Song Gao ◽  
Bin Xiong ◽  
Xiangbing Tang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics
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