Crayfish shell-based micro-mesoporous activated carbon: Insight into preparation and gaseous benzene adsorption mechanism

2021 ◽  
pp. 131148
Author(s):  
Guibin Shi ◽  
Song He ◽  
Guanyu Chen ◽  
Chichi Ruan ◽  
Yuansheng Ma ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Adsorption Mechanism ◽  
Benzene Adsorption ◽  
Mesoporous Activated Carbon ◽  
Gaseous Benzene ◽  
Insight Into

scholarly journals Effects of Gasifying Agents on the Characterization of Nut Shell-derived Activated Carbon

1995 ◽  
Vol 12 (3) ◽  
pp. 247-258 ◽  
Author(s):  
C. Nguyen ◽  
A. Ahmadpour ◽  
D.D. Do
Keyword(s):  
Carbon Dioxide ◽  
Activated Carbon ◽  
Activated Carbons ◽  
Benzene Adsorption ◽  
Surface Areas ◽  
Activating Agent ◽  
Micropore Size ◽  
Adsorptive Properties ◽  
Insight Into

Activated carbon was prepared from nut shells using a conventional two-stage method: carbonization followed by activation. Activation with steam or carbon dioxide as activating agent produced a range of chars of different burn-off. These were characterized for their total and micropore surface areas, and benzene adsorption capacity. Benzene adsorption measurement provided an insight into the effect of porosity development on the adsorptive properties of the adsorbent. It was found that activated carbon products from nut shells were comparable, in terms of adsorption characteristics, with activated carbons from other lignocellulosic precursors. The evolution of porosity of the resulting carbons shows that carbon dioxide is the preferable agent for the production of activated carbon with a narrow micropore size distribution.

Insight into adsorption mechanism of Congo red dye onto Bombax Buonopozense bark Activated-carbon using Central composite design and DFT studies

2021 ◽  
Vol 23 ◽  
pp. 100977
Author(s):  
Youness Achour ◽  
Lahoucine Bahsis ◽  
El-Houssaine Ablouh ◽  
Hicham Yazid ◽  
My Rachid Laamari ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Central Composite Design ◽  
Congo Red ◽  
Adsorption Mechanism ◽  
Dft Studies ◽  
Congo Red Dye ◽  
Red Dye ◽  
Central Composite ◽  
Insight Into

scholarly journals Kinetika Adsorpsi Gas Benzena Pada Karbon Aktif Tempurung Kelapa

Jurnal MIPA ◽  
2013 ◽  
Vol 2 (2) ◽  
pp. 100
Author(s):  
Rizky B. Holle ◽  
Audy D. Wuntu ◽  
Meiske S. Sangi
Keyword(s):  
Activated Carbon ◽  
Rate Equation ◽  
Order Rate Constant ◽  
Second Order ◽  
Coconut Shell ◽  
Benzene Adsorption ◽  
Order Rate ◽  
Pseudo Second Order ◽  
Order Rate Equation ◽  
Gaseous Benzene

Telah diteliti kinetika adsorpsi gas benzena pada karbon aktif tempurung kelapa yang diaktivasi dengan NaCl dengan tujuan menentukan model kinetika yang dapat diaplikasikan untuk adsorpsi gas benzena pada karbon aktif tempurung kelapa. Data adsorpsi dianalisis dengan menggunakan empat model persamaan laju adsorpsi yaitu (1) persamaan laju order pertama pseudo Lagergren, (2) persamaan laju order kedua pseudo Ho, (3) persamaan Elovich, dan (4) persamaan Ritchie. Hasil kajian menunjukkan bahwa model kinetika dengan persamaan laju order ke-2 pseudo Ho adalah yang paling sesuai diaplikasikan untuk adsorpsi gas benzena pada karbon aktif tempurung kelapa. Dari model kinetika order ke-2 pseudo Ho diperoleh konstanta adsorpsi benzena sebesar 1,63x10-4 g mg-1 min-1. Nilai energi adsorpsi menunjukkan bahwa benzena teradsorpsi secara fisik pada adsorben.Kinetics of gaseous benzene adsorption on coconut shell NaCl-activated carbon had been studied. The research was aimed to determine the appropriate kinetic model applied to gaseous benzene adsorption on the adsorbent. Adsorption data was analyzed using four kinetic models of adsorption rate equation, which were (1) Lagergren’s pseudo first order rate equation, (2) Ho’s pseudo second order rate equation, (3) Elovich‘s equation, and (4) Ritchie’s equation. The results showed that the Ho’s pseudo second order rate equation was best applied to gaseous benzene adsorption on coconut shell activated carbon. The second order rate constant for benzene adsorption was 1.63x10-4 g mg-1 min-1. The value of adsorption energy showed that benzene was physically adsorbed on the adsorbent.

Adsorption of p-Cresol by Mesoporous Activated Carbon. II. Mechanism studies and data modeling

2017 ◽  
Vol 68 (3) ◽  
pp. 496-499
Author(s):  
Mihaela Neagu ◽  
Daniela Roxana Popovici ◽  
Loredana Elena Vijan ◽  
Catalina Calin
Keyword(s):  
Activated Carbon ◽  
Adsorption Mechanism ◽  
Adsorption Process ◽  
Point Of Zero Charge ◽  
Particle Diffusion ◽  
Ftir Analysis ◽  
Film Diffusion ◽  
Mesoporous Activated Carbon ◽  
Boehm Titration ◽  
Intra Particle Diffusion

In this work, the adsorption mechanism of p-cresol from aqueous solution onto mesoporous activated carbon was investigated. The mechanism of the adsorption process was determined from Weber-Morris and Boyd models. By graphical and statistical analysis was demonstrated that both film-diffusion and intra-particle diffusion are concurrent in adsorption mechanism. The adsorption mechanism of p-cresol onto mesoporous activated carbon was sustained by FTIR analysis, Boehm titration and the point of zero charge of the GAC.

Adsorption mechanism of NH3, NO, and O2 molecules over FexOy/AC catalyst surface: a DFT-D3 study

2021 ◽  
Author(s):  
Chaoyue Xie ◽  
Yunlan Sun ◽  
Baozhong Zhu ◽  
Weiyi Song ◽  
Minggao Xu
Keyword(s):  
Activated Carbon ◽  
Adsorption Mechanism ◽  
Catalyst Surface ◽  
Specific Adsorption ◽  
Adsorption Mechanisms ◽  
Iron Based ◽  
Iron Based Catalysts ◽  
Supported Iron ◽  
Denox Efficiency

Activated carbon-supported iron-based catalysts (FexOy/AC) show excellent deNOx efficiency. However, the specific adsorption mechanisms of NH3, NO, and O2 molecules on their surfaces are still unknown. In this study, the...

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