scholarly journals Fixed-bed adsorption of metal ions from aqueous solution on polyethyleneimine-impregnated palm shell activated carbon

2009 ◽  
Vol 148 (1) ◽  
pp. 8-14 ◽  
Author(s):  
Chun Yang Yin ◽  
Mohd Kheireddine Aroua ◽  
Wan Mohd Ashri Wan Daud
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Metal Ions ◽  
Fixed Bed ◽  
Palm Shell ◽  
Adsorption Of Metal Ions ◽  
Fixed Bed Adsorption

scholarly journals Amine functionalized and Fe3O4 incorporated activated carbon for bisphenol-A separation

2019 ◽  
Vol 79 (9) ◽  
pp. 1755-1765 ◽  
Author(s):  
Drishti Bhatia ◽  
Sakshi Batra ◽  
Dipaloy Datta
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Bisphenol A ◽  
Fixed Bed ◽  
Industrial Effluent ◽  
Aliquat 336 ◽  
Continuous Mode ◽  
Batch Mode ◽  
Fixed Bed Adsorption ◽  
Gibb’S Free Energy

Abstract Activated carbon (AC) is the most commonly used adsorbent for water purification, although the dispersive nature of AC in aqueous solution poses a serious problem. To overcome this limitation, AC was magnetized with iron oxide using iron salts as precursor. Further to enhance its effectiveness, it was impregnated with Aliquat 336. Different characterization techniques (Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FE-SEM), along with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD)) were used to analyze the adsorbent. Furthermore, the value of the pH at which the overall charge on the surface of the adsorbent is neutral was found by pH drift method. The modified form of the activated carbon was used to treat the aqueous solution of bisphenol-A in the batch as well as in the continuous mode of operation. In batch mode, the data were validated using equilibrium and kinetic models, and in continuous mode, data were fitted with the Thomas, Adams-Bohart, and bed depth service time (BDST) fixed bed adsorption models. Also, the changes in Gibb's free energy, enthalpy, and entropy were estimated from the temperature study. The design of an adsorption column is proposed to treat 10,000 L/day of an industrial effluent containing BPA.

Optimised correlations for the fixed-bed adsorption of metal ions on bone char

2000 ◽  
Vol 55 (23) ◽  
pp. 5819-5829 ◽  
Author(s):  
Danny C.K. Ko ◽  
John F. Porter ◽  
Gordon McKay
Keyword(s):  
Metal Ions ◽  
Fixed Bed ◽  
Bone Char ◽  
Adsorption Of Metal Ions ◽  
Fixed Bed Adsorption

Adsorptive removal of phenol from aqueous solution on a modified palm shell-based carbon: fixed-bed adsorption studies

2016 ◽  
Vol 57 (60) ◽  
pp. 29488-29499 ◽  
Author(s):  
Abdurrahman Garba ◽  
Noor Shawal Nasri ◽  
Hatijah Basri ◽  
Razali Ismail ◽  
Zulkifli Abdul Majid ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fixed Bed ◽  
Adsorption Studies ◽  
Adsorptive Removal ◽  
Palm Shell ◽  
Fixed Bed Adsorption

Breakthrough analysis for hexavalent chromium removal from drinking water in a fixed bed column

2009 ◽  
Vol 9 (6) ◽  
pp. 661-670 ◽  
Author(s):  
S. P. Dubey ◽  
K. Gopal
Keyword(s):  
Aqueous Solution ◽  
Hexavalent Chromium ◽  
Fixed Bed ◽  
Entropy Change ◽  
Spectroscopic Technique ◽  
Fixed Bed Column ◽  
Chromium Vi ◽  
Fixed Bed Adsorption ◽  
Optimal Column ◽  
Eucalyptus Bark

The activated carbon of Eucalyptus globulus was tested for their effectiveness in removing hexavalent chromium from aqueous solution using column experiments. Result revealed that adsorption of chromium(VI) on eucalyptus bark carbon was endothermic in nature. Thermodynamic parameters such as the entropy change, enthalpy change and Gibbs free energy change were found to be 1.39 kJ mol−1 K−1, 1.08 kJ mol−1 and −3.85 kJ mol−1, respectively. Different chromium concentrations were used for the fixed bed adsorption studies. The pre- and post-treated adsorbents were characterized using a FTIR spectroscopic technique. It was concluded that Eucalyptus bark carbon column could be used effectively for removal of hexavalent chromium from aqueous solution at optimal column conditions. This study showed that this biological material is potential adsorbent of Cr(VI) from water.

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