scholarly journals The synergistic effect of oxygen-containing functional groups on CO2 adsorption by the glucose–potassium citrate-derived activated carbon

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 38965-38973 ◽  
Author(s):  
Baogen Liu ◽  
Haoyang Li ◽  
Xianchen Ma ◽  
Ruofei Chen ◽  
Shaobin Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Source ◽  
Synergistic Effect ◽  
Porous Carbon ◽  
Potassium Hydroxide ◽  
Co2 Adsorption ◽  
High Surface ◽  
High Surface Area ◽  
Potassium Citrate ◽  
Effect Of Oxygen

A high surface area activated carbon which was prepared by an innovative approach using glucose as a carbon source and neutral potassium citrate as an activator was compared with the porous carbon using corrosive potassium hydroxide as activator.

Removal of microcystin-LR from drinking water with TiO2-coated activated carbon

2004 ◽  
Vol 4 (5-6) ◽  
pp. 21-28
Author(s):  
S.-C. Kim ◽  
D.-K. Lee
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Synergistic Effect ◽  
Fluidized Bed ◽  
Continuous Flow ◽  
High Surface ◽  
High Surface Area ◽  
Fluidized Bed Reactor ◽  
Exterior Surface ◽  
Tio2 Particles

TiO2-coated granular activated carbon was employed for the removal of toxic microcystin-LR from water. High surface area of the activated carbon provided sites for the adsorption of microcystin-LR, and the adsorbed microcystin-LR migrated continuously onto the surface of TiO2 particles which located mainly at the exterior surface in the vicinity of the entrances of the macropores of the activated carbon. The migrated microcystin-LR was finally degraded into nontoxic products and CO2 very quickly. These combined roles of the activated carbon and TiO2 showed a synergistic effect on the efficient degradation of toxic microcystin-LR. A continuous flow fluidized bed reactor with the TiO2-coated activated carbon could successfully be employed for the efficient photocatalytic of microcystin-LR.

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO2 adsorption

2015 ◽  
Vol 51 (62) ◽  
pp. 12423-12426 ◽  
Author(s):  
Yu Wang ◽  
Houbing Zou ◽  
Shangjing Zeng ◽  
Ying Pan ◽  
Runwei Wang ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Porous Carbon ◽  
Co2 Adsorption ◽  
High Surface ◽  
Hollow Spheres ◽  
High Surface Area ◽  
Nitrogen Sources ◽  
Nitrogen Doped ◽  
One Step ◽  
Carbon Hollow Spheres

N-doped porous carbon hollow spheres with an ultrahigh nitrogen content of 15.9 wt% and a high surface area of 775 m2 g−1 were prepared using MF nanospheres as hard templates and nitrogen sources.

Enhancement of CO2 adsorption on high surface area activated carbon modified by N2, H2 and ammonia

2010 ◽  
Vol 160 (2) ◽  
pp. 571-577 ◽  
Author(s):  
Zhijuan Zhang ◽  
Mingyao Xu ◽  
Haihui Wang ◽  
Zhong Li
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Co2 Adsorption ◽  
High Surface ◽  
High Surface Area

Chemical Activation of Durian Shell Activated Carbon: Effects of Activation Agents

2015 ◽  
Vol 1113 ◽  
pp. 242-247
Author(s):  
Wan Norasiah Wan Mahmood ◽  
Rusnah Samsuddin ◽  
Raja Razuan Raja Deris
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Potassium Hydroxide ◽  
Chemical Activation ◽  
High Surface ◽  
High Surface Area ◽  
Total Pore Volume ◽  
Surface Porosity ◽  
Micropore Surface Area ◽  
Selection Of

Selection of suitable activation agent is important in order to produce high surface area of activated carbon. The present study was undertaken to develop high surface area of durian shell activated carbon (DSAC) using different chemical activation agents which were potassium hydroxide (KOH) and phosphoric acid (H3PO4). Surface porosity and surface area were directly measured from scanning electron microscopy (SEM) and surface area analyzer, respectively. For the optimum condition, it showed that H3PO4 treated DSAC had the highest surface area which was 257.50 m2/g compared to KOH treated DSAC which was 13.10 m2/g. H3PO4 treated DSAC also showed the highest micropore surface area, external surface area and total pore volume with 191.22 m2/g, 66.28 m2/g and 0.149 cm3/g, respectively. SEM result showed that H3PO4 treated DSAC had a well pronounce porosity than durian shell char. Surface area and surface porosity were important in an adsorption process.

Activated carbon from molasses efficiency for Cr(VI), Pb(II) and Cu(II) adsorption: A mechanistic study

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Sugar Industry ◽  
Chemical Activation ◽  
High Surface ◽  
High Surface Area ◽  
Mechanistic Study ◽  
Acid Mixture ◽  
Maximum Adsorption Capacity ◽  
Good Potential

Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.

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