Preparation of oil palm (Elaeis) empty fruit bunch activated carbon by microwave-assisted KOH activation for the adsorption of methylene blue

Desalination ◽  
2011 ◽  
Vol 275 (1-3) ◽  
pp. 302-305 ◽  
Author(s):  
K.Y. Foo ◽  
B.H. Hameed
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Oil Palm ◽  
Koh Activation ◽  
Empty Fruit Bunch ◽  
Microwave Assisted

scholarly journals Adsorptive characteristics and microwave dielectric properties of oil palm empty fruit bunch-based activated carbons for dye removal

2018 ◽  
Vol 14 (2) ◽  
pp. 241-245
Author(s):  
Muhammad Abbas Ahmad Zaini ◽  
Abdul Haris Ali
Keyword(s):  
Methylene Blue ◽  
Dielectric Properties ◽  
Heating Rate ◽  
Surface Area ◽  
Oil Palm ◽  
Activated Carbons ◽  
Microwave Dielectric Properties ◽  
Empty Fruit Bunch ◽  
Microwave Assisted ◽  
Microwave Dielectric

The present study was aimed to evaluate the adsorptive characteristics and microwave dielectric properties of activated carbons derived from oil palm empty fruit bunch (EFB) prepared by microwave-assisted potassium hydroxide activation at 300 W and 800 W for 5 min. The resultant products were characterized for dielectric properties, BET specific surface area, surface functional groups and methylene blue adsorption. Results show that the microwave-assisted activation yields activated carbons with surface area of 695 m2/g and 1339 m2/g for heating rates (microwave irradiation power) of 300 W and 800 W, respectively and both exhibit more than 95% removal of methylene blue at concentrations higher than 100 mg/L. The dielectric properties revealed a better propensity of activated carbons towards microwave heating especially at a higher heating rate due to high surface area, and possibly high moisture content and carbon content. A greater heating rate or microwave power could turn EFB into activated carbon with a higher surface area and excellent adsorptive properties for pollution abatement.

scholarly journals Preparation of oil palm empty fruit bunch based activated carbon for adsorption of dye from aqueous solution

2019 ◽  
Vol 268 ◽  
pp. 06008
Author(s):  
Narisara Intarachandra ◽  
Sukum Siriworakon ◽  
Theerapol Sangmanee
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Activated Carbon ◽  
Optimum Condition ◽  
Phosphoric Acid ◽  
Oil Palm ◽  
Average Pore Size ◽  
Chemical Activation ◽  
Synthetic Wastewater ◽  
Empty Fruit Bunch

The objectives of this research are to determine an optimum condition for producing the activated carbon from oil palm empty fruit bunch (OPEFB) and used as an adsorbent to remove methylene blue (MB) dye from aqueous solution. Chemical activation by phosphoric acid (H3PO4) was used as a procedure to modify OPEFB, in which in this study the carbonization and activation were done simultaneously. The concentrations of phosphoric acid were varied from 20-60% by weight and carbonization temperature and time were varied from 500-800oC and 30-60 minutes, respectively. It was found that among the conditions used, the best condition for producing activated carbon was obtained when using 60% H3PO4 and carbonized at 500oC for 30 minute. The produced activated carbon had a surface area of 362.5 m2/g and average pore size of 2.94 nm. Methylene blue and Iodine numbers were 13.62 and 356.46 mg/g, respectively, which were comparable to the results of commercial activated carbon; i.e. 6.96 and 778.7 mg/g. The optimum condition for the adsorption of MB from synthetic wastewater by produced activated carbon was found at pH 8-12 with equilibrium time of 4 hours. Results demonstrated that the equilibrium data was well fitted by Freundlich isotherm model with the isotherm constants KF of 7.75 mg/g and 1/n of 0.13.

scholarly journals Physical Properties Analysis of Activated Carbon from Oil Palm Empty Fruit Bunch Fiber on Methylene Blue Adsorption

2019 ◽  
Vol 1 (1) ◽  
pp. 67-73
Author(s):  
Rakhmawati Farma
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Surface Morphology ◽  
Physical Properties ◽  
Oil Palm ◽  
Chemical Activation ◽  
Empty Fruit Bunch ◽  
X Ray Diffraction ◽  
Methylene Blue Adsorption ◽  
X Ray

The present research was conducted to analyze the physical properties of activated carbon from oil palm empty fruit bunch fiber (OPEFBF) to be applied as methylene blue adsorbent material. The OPEFBF was pre-carbonized at 280oC for 4 hours in vacuum, milled, and sieved to obtain the self-adhesive carbon grain (SACG) with a size less than 106 µm. The chemical activation was done using potassium hydroxide (KOH) with variations of 25%, 50%, and 75% from the SACG weight, stirred at 400 rpm for 24 hours at room temperature and pyrolyzed using microwave irradiations at the output power of 720 W for 15 minutes. The physical properties of activated carbon consist of two characterizations, namely microstructure evaluated with X-ray diffraction (XRD) and surface morphology evaluated with scanning electron microscopy (SEM). The XRD pattern showed that the activated carbon had a semi-crystalline structure characterized by the presence of (002) and (100) planes at the diffraction angle of 2θ about 21o and 43o, respectively. The surface morphology of activated carbon depicted that a higher percentage of KOH resulted in more pores were formed. Thus, the higher the surface area of activated carbon, the greater the adsorption of methylene blue. The highest methylene blue adsorption was obtained in the sample of 75% KOH with 87.73 mg/g. The energy dispersive X-ray showed that the increase of KOH percentage used enhanced the percentage of carbon element produced.

scholarly journals Parametric Study on Microwave-Assisted Pyrolysis Combined KOH Activation of Oil Palm Male Flowers Derived Nanoporous Carbons

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2876
Author(s):  
Napat Kaewtrakulchai ◽  
Kajornsak Faungnawakij ◽  
Apiluck Eiad-Ua
Keyword(s):  
Microwave Radiation ◽  
Oil Palm ◽  
Radiation Power ◽  
Operating Time ◽  
Bet Surface Area ◽  
Koh Activation ◽  
Nanoporous Carbons ◽  
Microwave Assisted ◽  
Activating Agent ◽  
Male Flowers

Oil palm male flowers (PMFs), an abundant agricultural waste from oil palm plantation in Thailand, have been utilized as an alternative precursor to develop nanoporous carbons (NPCs) via microwave-assisted pyrolysis combined potassium hydroxide (KOH) activation. The influences of relevant processing variables, such as activating agent ratio, microwave power, and activation time on the specific pore characteristics, surface morphology, and surface chemistry of PMFs derived nanoporous carbons (PMFCs) have been investigated to explore the optimum preparation condition. The optimum condition under a microwave radiation power of 700 W, activation holding time of 6 min, and activating agent ratio of 2:1 obtained the PMFC with the highest Brunauer–Emmett–Teller (BET) surface area and total pore volume approximately of 991 m2/g and 0.49 cm3/g, composed of a carbon content of 74.56%. Meanwhile, PMFCs have a highly microporous structure of about 71.12%. Moreover, activating agent ratio and microwave radiation power indicated a significant influence on the surface characteristics of PMFCs. This study revealed the potential of oil palm male flowers for the NPCs’ production via microwave-assisted KOH activation with a short operating-time condition.

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.  

Removal of Bisphenol A from Aqueous Solution by Activated Carbon Derived from Oil Palm Empty Fruit Bunch

2014 ◽  
Vol 225 (10) ◽  
Author(s):  
Riry Wirasnita ◽  
Tony Hadibarata ◽  
Abdull Rahim Mohd Yusoff ◽  
Zulkifli Yusop
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Bisphenol A ◽  
Oil Palm ◽  
Empty Fruit Bunch
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