Surface characterization of activated carbons obtained from olive bagasse by chemical activation

2010 ◽  
Vol 42 (6-7) ◽  
pp. 1347-1350 ◽  
Author(s):  
İlknur Demiral ◽  
Hakan Demiral
Keyword(s):  
Surface Characterization ◽  
Activated Carbons ◽  
Chemical Activation

PREPARATION AND CHARACTERIZATION OF ACTIVATED CARBON FROM OIL PALM EMPTY FRUIT BUNCH WASTES USING ZINC CHLORIDE

2015 ◽  
Vol 74 (11) ◽  
Author(s):  
Riry Wirasnita ◽  
Tony Hadibarata ◽  
Abdull Rahim Mohd Yusoff ◽  
Zainab Mat Lazim
Keyword(s):  
Activated Carbon ◽  
Zinc Chloride ◽  
Oil Palm ◽  
Active Sites ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Proximate Analysis ◽  
Infrared Spectrometry ◽  
Empty Fruit Bunch

An oil palm empty fruit bunch-derived activated carbon has been successfully produced by chemical activation with zinc chloride and without chemical activation. The preparation was conducted in the tube furnace at 500oC for 1 h. The surface structure and active sites of activated carbons were characterized by means of Fourier transform infrared spectrometry and field emission scanning electron microscopy. The proximate analysis including moisture content, ash content, bulk density, pH, and pH at zero charge was conducted to identify the psychochemical properties of the adsorbent. The results showed that the zinc chloride-activated carbon has better characteristics compared to the carbon without chemical activation.  

scholarly journals Activated Carbons (AC) Prepared by Direct CO2 Activation of Parsea Americana seeds Biomass for Supercapacitor Electrodes

2021 ◽  
Vol 2049 (1) ◽  
pp. 012067
Author(s):  
Rakhmawati Farma ◽  
Ramadani Putri Anakis ◽  
Irma Apriyani
Keyword(s):  
Activated Carbons ◽  
Chemical Activation ◽  
Physical Activation ◽  
Co2 Activation ◽  
X Ray Diffraction ◽  
Activation Temperature ◽  
X Ray ◽  
Cyclic Voltametry ◽  
Scanning Electron

Abstract Biomass converted into activated carbon (AC) by using physical activation method can form micro-meso pore structure and maintain the interconnected natural pore network of biomass. AC is prepared from the biomass of Parsea Americana seeds (PAS) through a process of pre-carbonization, chemical activation, carbonization and physical activation which is activated at temperatures of 700°C, 800°C, and 900°C. Characterization of physical properties of AC electrodes consisted of X-ray diffraction, Scanning Electron Microscope-Energy Dispersive X-ray and characterization of electrochemical properties of supercapacitor cells using Cyclic Voltametry. The results showed that the microstructure of the AC electrode has a semicrystalline structure characterized by the presence of two sloping peaks at an angle of 2θ around 24° and 44° which corresponded to the hkl (002) and (100) planes, where the lowest Lc value was produced by the PAS-900 sample. The PAS-900 sample had aggregates or lumps with smaller size in small amounts in the presence of micro-mesopores and had the highest carbon content of 94.50% with the highest capacitance value of 203.12 F/g. The temperature of 900°C is the best activation temperature in the process of manufacture AC electrodes from Parsea Americana seeds biomass for supercapacitor cell applications.

scholarly journals Preparation and Characterization of Activated Carbons from Bitter Kola (Garcinia kola) Nut Shells by Chemical Activation Method Using H3PO4; KOH and ZnCl2

2018 ◽  
Vol 23 (4) ◽  
pp. 1-15 ◽  
Author(s):  
Kuete Tiotsop Idris-Hermann ◽  
Tchuifon Tchuifon Donald Raoul ◽  
Doungmo Giscard ◽  
Anagho Solomon Gabche
Keyword(s):  
Activated Carbons ◽  
Chemical Activation ◽  
Activation Method ◽  
Garcinia Kola

scholarly journals Preparation and Characterization of Activated Carbons fromPartheniumbiomass by Physical and Chemical Activation Techniques

2010 ◽  
Vol 7 (4) ◽  
pp. 1314-1319 ◽  
Author(s):  
Rajeshwari Sivaraj ◽  
Venckatesh Rajendran ◽  
G. Sangeetha Gunalan
Keyword(s):  
Activated Carbons ◽  
Chemical Activation ◽  
Perennial Weed ◽  
Food Grains ◽  
Characteristic Features ◽  
Activation Conditions ◽  
Physical And Chemical ◽  
Efficient Adsorbent ◽  
Potential Use

Parthenium hysterphorous(Linn), a perennial weed of no known beneficial use was introduced as a containment of food grains imported from US with P1480 scheme. The colonization efficiency of the weed was much higher than other indigenous weeds resulting in the reduction of cultivable areas of agricultural lands. Therefore, attention was focused to find out the potential use of its biomass. In the present study the preparation and characterization of activated carbons by physical and chemical activation methods are reported and aims to prepare relatively well developed porous activated carbons as well as study various conditions and parameters that were involved during the process. Among the carbons prepared Zncl2impregnated carbon at the ratio of 1 was found to possess the characteristic features of an efficient adsorbent. Experimental results showed that pyrolytic and activation conditions leading to various final average temperatures had significant effect on the properties of activated carbons prepared.

scholarly journals Characterization of Activated Carbons from Oil-Palm Shell by CO2Activation with No Holding Carbonization Temperature

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
S. G. Herawan ◽  
M. S. Hadi ◽  
Md. R. Ayob ◽  
A. Putra
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Oil Palm ◽  
Pyrolysis Temperature ◽  
Activated Carbons ◽  
Chemical Activation ◽  
Surface Characteristics ◽  
Bet Surface Area ◽  
Preparation Time

Activated carbons can be produced from different precursors, including coals of different ranks, and lignocellulosic materials, by physical or chemical activation processes. The objective of this paper is to characterize oil-palm shells, as a biomass byproduct from palm-oil mills which were converted into activated carbons by nitrogen pyrolysis followed by CO2activation. The effects of no holding peak pyrolysis temperature on the physical characteristics of the activated carbons are studied. The BET surface area of the activated carbon is investigated using N2adsorption at 77 K with selected temperatures of 500, 600, and 700°C. These pyrolysis conditions for preparing the activated carbons are found to yield higher BET surface area at a pyrolysis temperature of 700°C compared to selected commercial activated carbon. The activated carbons thus result in well-developed porosities and predominantly microporosities. By using this activation method, significant improvement can be obtained in the surface characteristics of the activated carbons. Thus this study shows that the preparation time can be shortened while better results of activated carbon can be produced.

Chemical Surface Characterization of Activated Carbons by Adsorption Excess of Probe Molecules

2016 ◽  
Vol 39 (6) ◽  
pp. 1144-1150 ◽  
Author(s):  
Julian Treese ◽  
Christoph Pasel ◽  
Michael Luckas ◽  
Dieter Bathen
Keyword(s):  
Surface Characterization ◽  
Activated Carbons ◽  
Probe Molecules ◽  
Chemical Surface
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