Author: Norzilah Abdul HalifPublisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 188
Book Description
Adsorption of 4-nitrophenol Onto Palm Shell Based Activated Carbon
Author: Norzilah Abdul HalifPublisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 188
Book Description
Removal of 4-nitrophenol from Wastewater Using Adsorption Techniques on Rattan Based Activated Carbon
Author: Ali Mansoor Ali AmirPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 186
Book Description
Active Carbon
Author: Helena JankowskaPublisher: Ellis Horwood
ISBN:
Category : Science
Languages : en
Pages : 288
Book Description
This text is concerned with the production of active carbons, describing their properties based on the characteristic features of the porous and chemical structures of the surface. It provides the data needed for calculating the porous structure of active carbons using modern methods.
The Adsorption of Phenols Onto Granular Activated Carbon from Aqueous Solution
Author: John S. ZogorskiPublisher:
ISBN:
Category : Carbon, Activated
Languages : en
Pages : 686
Book Description
Adsorption of Basic and Acid Dyes Using Palm Kernel Shell-based Activated Carbon
Author: Jumasiah ArsyadPublisher:
ISBN:
Category : Acid-base chemistry
Languages : en
Pages :
Book Description
A series of batch laboratory studies were conducted in order to investigate the practicability of palm kernel shell (PKS)-based activated carbon for removal of basic dye, Basic Blue 9 (BB 9) and acid dye, Acid Orange 52 (AO 52) from their aqueous solutions. Three different particle sizes of PKS were used and categorized as PKS - S, PKS - M and PKS - L. The adsorption capacities of the PKS-based activated carbons were compared with those of commercial grade coal-based activated carbons at the same conditions. All batch experiments were carried out at a constant temperature of 28oC (±2oC) using incubator shaker that operated at 150 rpm. Batch equilibrium study shows that Adsorption of BB 9 and AO 52 were highly pH dependent. Removal of BB 9 increased with pH with maximum removal observed at pH 7.0, and decreased thereafter with further increase in the initial pH. However, pH effect on AO 52 removal shows that AO 52 removal decreased with an increase in initial pH with the optimum initial was observed at 3.5. batch equilibrium data also a had good agreement with the Langmuir, Freundlich and Redlich-Peterson isotherm models with correlation coefficients > 0.9. Overall, the Redlich-Peterson isotherm showed the best fit for all adsorbents under investigation in terms of correlation coefficient as well as error analysis of the results. For all the systems in this study, the analysis of isotherm shape factor showed that adsorption was favorable. For the adsorbents under investigation, PKS-S has the highest adsorption capacity followed by PKS-M. PKS-L and commercial coal based pellet form have almost equally-balanced adsorption capacity. Of all the adsorbents, commercial coal-based in powder form exhibits the lowest adsorption capacity. Obtained results revealed that PKS based activated carbon is a highly potential alternative adsorbent for treatment of dye-containing wastewater. The maximum capacity of the adsorbents for BB 9 were 333.33 mg/g, 322.58 mg/g and 212.77 mg/g for PKS - S, PKS - M and PKS - L, respectively, while for powder and pellet commercial grade coal based, the capacities were 204.08 mg/g and 217.39 mg/g, respectively. On the other hand, the maximum capacities of the same adsorbents for AO 52 were 344.83 mg/g, 333.33 mg/g, 263.16 mg/g, 238.09 mg/g and 322.58 mg/g, respectively. Adsorption capacities of the same adsorbents were found to be higher for adsorption of AO 52 compared to those of BB 9 due to the smaller molecular size of the former. Batch kinetic studies were also performed to investigate the rate limiting of the adsorption process. Results obtained revealed that the adsorption of both BB 9 and AO 52 was rapid at the beginning, but approached equilibrium slowly. Experimental data can be modeled using pseudo-second-order kinetic model as first order kinetic model does not represent the whole range of adsorption process. Other than that, intraparticle diffusion was found to be prominent at a certain stage of adsorption but it would not be the only limiting step that controlled the adsorption dynamic. Kinetic data also showed that the adsorption rates were a function of initial adsorbate concentration, adsorbent particle size and adsorbent mass. For all systems under consideration, the values of k2 increased significantly as adsorbent dose increases. Nevertheless, the values of k2 were inversely proportional to the initial adsorbate concentration and adsorbent particle size. On the other hand, values of kp were found to be directly proportional to the initial adsorbate concentration but decreased gradually as adsorbent particle size and adsorbent dose increases.
Isotherm and Kinetics of Reactive Dye Adsorption on Palm Kernel Shell-based Activated Carbon
Author: Mohsen Nourouzi MobarekehPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 168
Book Description
Activated Carbon from Palm Kernel Shell as an Adsorbent of Paraquat
Author: Mohosina Bintay ShahjahanPublisher:
ISBN:
Category : Carbon
Languages : en
Pages : 234
Book Description
Highly Efficient Activated Carbon (HEAC) as an adsorbent of toxins has been successfully produced from palm shell through chemical activation process using phosphoric acid as an activating agent. Palm Kernel shell used as the main raw material for activated carbon production, was purchased from a local oil palm mill in Pahang, Malaysia. Temperature range 550 oC - 650 oC was used during the activation process. The effect of temperature variation on the pore size and surface morphology of the activated carbon were studied. Well developed pore size and low number of functional groups observed on activated carbon at 600 oC were determined by Scanning Electron Microscope (SEM) and Fourier- Transform Infrared (FTIR) spectroscopy, respectively. The surface area and pore volume were determined by Brunauer, Emmett and Teller (BET) method using N2 gas adsorption. The highest surface area (1287 m2g-1) and pore volume (0.74 cm3 g-1) was observed with sample HEAC-2. The adsorption efficiency of HEAC-2 was studied in vitro for paraquat as toxin using distilled water and NaCl (0.9%) solution. These study shows paraquat was adsorbed more on HEAC-2 in the presence of sodium chloride solution (4.68 mgL-1) than in distilled water (3.62 mgL-1). Furthermore, a comparision was done between HEAC-2 (4.68 mgL-1) and commercially available activated carbon (4.18mg L-1) which proved HEAC-2 is more effective than commercially available activated carbon.
The Effect of Activated Carbon Surface Chemistry on Adsorption of P-nitrophenol
Author: Cuneyt Ali FeizoulofPublisher:
ISBN:
Category :
Languages : en
Pages : 176
Book Description
Amination of Palm Shell Based Activated Carbon for Carbon Dioxide Adsorption
Author: Mohammad Saleh ShafeeyanPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 228
Book Description
Adsorption of Heavy Metals on Polyethyleneimine Modified Palm Shell Activated Carbon
Author: Chun Yang YinPublisher:
ISBN:
Category : Adsorption
Languages : en
Pages : 254
Book Description