Utilization of Pine Nut Shell for Preparation of High Surface Area Activated Carbon by Microwave Heating and KOH Activation

2016 ◽  
pp. 51-58
Author(s):  
Xuefeng Liao ◽  
Jinhui Peng ◽  
Shengzhou Zhang ◽  
Hongying Xia ◽  
Libo Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microwave Heating ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
Pine Nut

scholarly journals Effect of Microwave Heating Conditions on the Preparation of High Surface Area Activated Carbon from Waste Bamboo

2015 ◽  
Vol 34 (7) ◽  
pp. 667-674
Author(s):  
Jian Wu ◽  
Hongying Xia ◽  
Libo Zhang ◽  
Yi Xia ◽  
Jinhui Peng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Microwave Heating ◽  
Surface Area ◽  
Microwave Power ◽  
High Surface ◽  
High Surface Area ◽  
Significant Proportion ◽  
Heating Time ◽  
Raw Material ◽  
Carbon Surface

Abstract The present study reports the effect of microwave power and microwave heating time on activated carbon adsorption ability. The waste bamboo was used to preparing high surface area activated carbon via microwave heating. The bamboo was carbonized for 2 h at 600°C to be used as the raw material. According to the results, microwave power and microwave heating time had a significant impact on the activating effect. The optimal KOH/C ratio of 4 was identified when microwave power and microwave heating time were 700 W and 15 min, respectively. Under the optimal conditions, surface area was estimated to be 3441 m2/g with pore volume of 2.093 ml/g and the significant proportion of activated carbon was microporous (62.3%). The results of Fourier transform infrared spectroscopy (FTIR) were illustrated that activated carbon surface had abundant functional groups. Additionally the pore structure is characterized using Scanning Electron Microscope (SEM).

scholarly journals Structural Flexibility in Activated Carbon Materials Prepared under Harsh Activation Conditions

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1988 ◽  
Author(s):  
Fabiano Gomes Ferreira de Paula ◽  
Ignacio Campello-Gómez ◽  
Paulo Fernando Ribeiro Ortega ◽  
Francisco Rodríguez-Reinoso ◽  
Manuel Martínez-Escandell ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Structural Changes ◽  
Organic Molecules ◽  
Carbon Materials ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation ◽  
3D Network ◽  
Activation Conditions

Although traditionally high-surface area carbon materials have been considered as rigid structures with a disordered three dimensional (3D) network of graphite microdomains associated with a limited electrical conductivity (highly depending on the porous structure and surface chemistry), here we show for the first time that this is not the case for activated carbon materials prepared using harsh activation conditions (e.g., KOH activation). In these specific samples a clear structural re-orientation can be observed upon adsorption of different organic molecules, the structural changes giving rise to important changes in the electrical resistivity of the material. Whereas short chain hydrocarbons and their derivatives give rise to an increased resistivity, the contrary occurs for longer-chain hydrocarbons and/or alcohols. The high sensitivity of these high-surface area carbon materials towards these organic molecules opens the gate towards their application for sensing devices.

Effect of Activating Agent on the Preparation of Bamboo-Based High Surface Area Activated Carbon by Microwave Heating

2016 ◽  
Vol 35 (6) ◽  
pp. 535-541 ◽  
Author(s):  
Hongying Xia ◽  
Jian Wu ◽  
Chandrasekar Srinivasakannan ◽  
Jinhui Peng ◽  
Libo Zhang
Keyword(s):  
Activated Carbon ◽  
Microwave Heating ◽  
Surface Area ◽  
Pore Volume ◽  
Activated Carbons ◽  
High Surface ◽  
High Surface Area ◽  
Significant Proportion ◽  
Mixture Ratio ◽  
Activating Agent

AbstractThe present work attempts to convert bamboo into a high surface area activated carbon via microwave heating. Different chemical activating agents such as KOH, NaOH, K2CO3 and Na2CO3 were utilized to identify a most suitable activating agent. Among the activating agents tested KOH was found to generate carbon with the highest porosity and surface area. The effect of KOH/C ratio on the porous nature of the activated carbon has been assessed. An optimal KOH/C ratio of 4 was identified, beyond which the surface area as well as the pore volume were found to decrease. At the optimized KOH/C ratio the surface area and the pore volume were estimated to be 3,441 m2/g and 2.093 ml/g, respectively, with the significant proportion of which being microporous (62.3%). Activated carbon prepared under the optimum conditions was further characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). Activated carbons with so high surface area and pore volume are very rarely reported, which could be owed to the nature of the precursor and the optimal conditions of mixture ratio adopted in the present work.

scholarly journals Preparation and CO2Sorption of a High Surface Area Activated Carbon Obtained from the KOH Activation of Finger Citron Residue

2012 ◽  
Vol 30 (2) ◽  
pp. 183-191 ◽  
Author(s):  
Wei Dai ◽  
Yuchen Liu ◽  
Wei Su ◽  
Gengshen Hu ◽  
Gang Deng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Koh Activation

Preparation and Application of High Surface Area Activated Carbon Based on Pine Nut Shell

2014 ◽  
Vol 4 (4) ◽  
pp. 336-340 ◽  
Author(s):  
Xuebin Chu ◽  
Likun Zhao ◽  
Yunze Sun ◽  
Hanbo Xie ◽  
Chunyu Xi
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Pine Nut ◽  
Carbon Based

Adsorption of Creatinine on Pine Nut Shell-Based High Surface Area Activated Carbon

2014 ◽  
Vol 1073-1076 ◽  
pp. 81-85
Author(s):  
Chun Yu Xi ◽  
Xue Bin Chu ◽  
Mu Yao Xi ◽  
Li Kun Zhao ◽  
Yun Ze Sun ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Medium ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Adsorption Isotherms ◽  
High Surface ◽  
High Surface Area ◽  
Agricultural Biomass ◽  
Pine Nut ◽  
Biomass Materials

The objective of this research is to prepare high surface area activated carbon (AC) from agricultural biomass materials–pine nut shells–by the method of carbonization and alkaline activation. Adsorption isotherms of creatinine (CR) by pine nut shell-based high surface area activated carbon (AC) from aqueous medium have been studied. The results have been found that samples have larger capacity for removing CR from solution. The adsorption capacity of CR as intensity at first 50 min. After 50 min, it’s smooth and steady. The carbons prepared with KOH could be effectively used for the removal of CR.

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