ADSORPTION ABILITY OF ACTIVATED CARBON OBTAINED FROM SUB-BITUMINOUS COAL (LEBU, CHILE) TO CAPTURE TRIMETHYLAMINE

The optimum condition for preparing a highly efficient activated carbon has been investigated in this work. The effects of different activation temperatures on the pore structure and surface morphology of highly efficient activated carbon (AC) derived from waste palm shell by chemical activation method using phosphoric acid as activating agent were studied. For activation, different activation temperatures in the range of 550 °C-650 °C were carried out. Activated carbon with well developed pore size were produced at activation temperature of 600 °C for 2 hours. At this temperature the Brunauer , Emmett and Teller (BET) surface areas are 1287 m2g-1, the total pore volume for adsorption and desorption are 0.742 cm3 g-1. Scanning Electron Microscope also confirmed the porosity of the highly efficient activated carbon. Finally it was tested in vitro to determine its adsorbing capacity for paraquat as a toxin. For optimum adsorption ability of activated carbon for paraquat, 0.9% NaCl solution is the most suitable solvent. The paraquat preferentially adsorbed onto the activated carbon in NaCl solution. The adsorption ability of the activated carbon (the amount adsorbed) for paraquat observed to be 99.9 mg g-1.

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Effects of feedstock pre-drying on carbonization of KOH-mixed bituminous coal in preparation of activated carbon

Journal of Analytical and Applied Pyrolysis ◽

10.1016/j.jaap.2007.03.003 ◽

2007 ◽

Vol 80 (2) ◽

pp. 277-282 ◽

Cited By ~ 29

Author(s):

Baba Y. Jibril ◽

Rashid S. Al-Maamari ◽

Geeta Hegde ◽

Nasser Al-Mandhary ◽

Omar Houache

Keyword(s):

Activated Carbon ◽

Bituminous Coal

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Adsorption Ability of Cephalexin onto the Straw-Based Activated Carbon: Performance and Mechanism

Asian Journal of Chemistry ◽

10.14233/ajchem.2020.22566 ◽

2020 ◽

Vol 32 (8) ◽

pp. 2084-2090

Author(s):

Lam Van Tan ◽

Hong-Tham Nguyen Thi ◽

To-Uyen Dao Thi ◽

Nguyen Thi Thuy Hong

Keyword(s):

Activated Carbon ◽

Adsorption Capacity ◽

Contact Time ◽

Bet Surface Area ◽

Surface Material ◽

Adsorption Ability ◽

Initial Concentration ◽

Carbon Performance ◽

Adsorbent Materials ◽

Performance And Mechanism

A straw-activated carbon has been successfully synthesized with the high BET surface area, at 494.9240 m2/g, which is perfectly suitable for the adsorption of cephalexin antibiotic from aqueous water. It is noted that the adsorption capacity of straw-activated carbon is demonstrated by the effect of initial concentration, contact time, pH solution and dosage. The straw-activated carbon exhibited improved decontaminant efficiency towards cephalexin antibiotics. Quick and improved sorption could be attributable to the distinctive structural and compositional merits as well as the synergetic contribution of functional groups to surface material. Most interestingly, the adsorption capacity achieved at pH 6 was ~98.52%. A mechanism adsorption has been proposed to demonstrate adsorption of the straw-activated carbon (AC-S). By comparison with other studies, it is confirmed that AC-S in this study obtained a higher removal efficiency than other adsorbent materials, suggesting that straw-activated carbon may be an appropriate candidate to treat cephalexin from wastewater media

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Effect of pyrolysis conditions on the improvement of the physicochemical structure of activated carbon obtained from Jixi bituminous coal

Asia-Pacific Journal of Chemical Engineering ◽

10.1002/apj.2289 ◽

2019 ◽

Vol 14 (2) ◽

pp. e2289 ◽

Cited By ~ 4

Author(s):

Dong Dong Liu ◽

Bo Yin Jia ◽

Song Li ◽

Liang Jie Dong ◽

Ji Hui Gao ◽

...

Keyword(s):

Activated Carbon ◽

Bituminous Coal ◽

Physicochemical Structure

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Encapsulation of Activated Carbon into a Hollow-Type Spherical Bacterial Cellulose Gel and Its Indole-Adsorption Ability Aimed at Kidney Failure Treatment

Pharmaceutics ◽

10.3390/pharmaceutics12111076 ◽

2020 ◽

Vol 12 (11) ◽

pp. 1076

Author(s):

Toru Hoshi ◽

Masahito Endo ◽

Aya Hirai ◽

Masashige Suzuki ◽

Takao Aoyagi

Keyword(s):

Activated Carbon ◽

Cell Suspension ◽

Bacterial Cellulose ◽

Silicone Oil ◽

Adsorption Ability ◽

Alginate Gel ◽

Initial Stage ◽

Intra Particle Diffusion ◽

Pass Through ◽

Komagataeibacter Xylinus

For reducing side effects and improvement of swallowing, we studied the encapsulation of activated carbon formulations with a hollow-type spherical bacterial cellulose (HSBC) gel using two kinds of encapsulating methods: Methods A and B. In Method A, the BC gelatinous membrane was biosynthesized using Komagataeibacter xylinus (K. xylinus) at the interface between the silicone oil and cell suspension containing activated carbon. In Method B, the bacterial cellulose (BC) gelatinous membrane was formed at the interface between the cell suspension attached to the alginate gel containing activated carbon and the silicone oil. After the BC gelatinous membrane was biosynthesized by K. xylnus, alginate gel was removed by soaking in a phosphate buffer. The activated carbon encapsulated these methods could neither pass through the BC gelatinous membrane of the HSBC gel nor leak from the interior cavity of the HSBC gel. The adsorption ability was evaluated using indole, which is a precursor of the uremic causative agent. From curve-fitting, the adsorption process followed the pseudo-first-order and intra-particle diffusion models, and the diffusion of the indole molecules at the surface of the encapsulated activated carbon within the HSBC gel was dominant at the initial stage of adsorption. It was observed that the adsorption of the encapsulated activated carbon by the intraparticle diffusion process became dominant with longer adsorption times.

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