Removal of Ni (II) ions from aqueous solutions using modified rice straw in a fixed bed column

2013 ◽  
Vol 146 ◽  
pp. 519-524 ◽  
Author(s):  
Reena Sharma ◽  
Baljinder Singh
Keyword(s):  
Aqueous Solutions ◽  
Rice Straw ◽  
Fixed Bed ◽  
Fixed Bed Column

Removal of Cd(II) Ions from Aqueous Solutions Using Immobilized Spent Substrates of Pleurotus ostreatus in a Fixed-Bed Column

2019 ◽  
Vol 36 (9) ◽  
pp. 1162-1169 ◽  
Author(s):  
Juanjuan Qu ◽  
Yue Li ◽  
Tingting Zang ◽  
Yu Jin ◽  
Xuesheng Liu ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Pleurotus Ostreatus ◽  
Fixed Bed ◽  
Fixed Bed Column

scholarly journals Cr(III) removal from aqueous solutions: A straightforward model approaching of the adsorption in a fixed-bed column

2013 ◽  
Vol 49 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Antonio David Dorado ◽  
Xavier Gamisans ◽  
Cesar Valderrama ◽  
Montse Solé ◽  
Conxita Lao
Keyword(s):  
Aqueous Solutions ◽  
Fixed Bed ◽  
Fixed Bed Column

scholarly journals Magnetic Fe3O4@Chitosan Carbon Microbeads: Removal of Doxycycline from Aqueous Solutions through a Fixed Bed via Sequential Adsorption and Heterogeneous Fenton-Like Regeneration

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Bo Bai ◽  
Xiaohui Xu ◽  
Changchuan Li ◽  
Jianyu Xing ◽  
Honglun Wang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
High Efficiency ◽  
Low Cost ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Chitosan Hydrogel ◽  
Fixed Bed Column ◽  
Adsorptive Removal ◽  
Sequential Adsorption ◽  
Cracking Process

The adsorptive removal of antibiotics from aqueous solutions is recognized as the most suitable approach due to its easy operation, low cost, nontoxic properties, and high efficiency. However, the conventional regeneration of saturated adsorbents is an expensive and time-consuming process in practical wastewater treatment. Herein, a scalable adsorbent of magnetic Fe3O4@chitosan carbon microbeads (MCM) was successfully prepared by embedding Fe3O4 nanoparticles into chitosan hydrogel via an alkali gelation-thermal cracking process. The application of MCM composites for the adsorptive removal of doxycycline (DC) was evaluated using a fixed-bed column. The results showed that pH, initial concentration, flow rate, and bed depth are found to be important factors to control the adsorption capacity of DC. The Thomas and Yoon-Nelson models showed a good agreement with the experimental data and could be applied for the prediction of the fixed-bed column properties and breakthrough curves. More importantly, the saturated fixed bed can be easily recycled by H2O2 which shows excellent reusability for the removal of doxycycline. Thus, the combination of the adsorption advantage of chitosan carbon with catalytic properties of magnetic Fe3O4 nanoparticles might provide a new tool for addressing water treatment challenges.

Fixed-Bed Column Study for the Removal of Ag(I)and Cr(III) from Aqueous Solutions Using Puffed Rice Husk

2011 ◽  
Vol 287-290 ◽  
pp. 1620-1625
Author(s):  
Yan Wu ◽  
Zai Fang Deng ◽  
Yang Tao ◽  
Xue Gang Luo
Keyword(s):  
Aqueous Solutions ◽  
Rice Husk ◽  
Flow Rate ◽  
Service Time ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Model Parameters ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Puffed Rice

Fixed-bed column studies for the removal of Ag(Ⅰ) and Cr(Ⅲ) from individual aqueous solutions using puffed rice husk were investigated in this work. The experiments were conducted to study the effect of important column parameters such as bed height, feed flow rate and feed initial concentration of solution. It was found that increasing bed depth yielded longer service time while increase in influent concentration and flow rate resulted in faster breakthrough. Bed Depth Service Time (BDST) model was applied to analyze the experimental data and the model parameters were evaluated. Good agreement of the experimental breakthrough curves with the model predictions was observed.

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