Characterization Of Activated Carbon Prepared From Coconut Shell Using Various Reagents For A Low Cost Water- Filter

AbstractTwo series of activated carbon have been prepared by chemical activation of Amygdalus Scoparia shell with phosphoric acid or zinc chloride for the removal of Pb(II) ions from aqueous solutions. Several methods were employed to characterize the active carbon produced. The surface area was calculated using the standard Brunauer-Emmet-Teller method. The microstructures of the resultant activated carbon were observed by scanning electron microscopy. The chemical composition of the surface resultant activated carbon was determined by Fourier transform infrared spectroscopy. In the batch tests, the effect of pH, initial concentration, and contact time on the adsorption were studied. The data were fitted with Langmuir and Freundlich equations to describe the equilibrium isotherms. The maximum adsorption capacity of Pb(II) on the resultant activated carbon was 36.63 mg g−1 with H3PO4 and 28.74 mg g−1 with ZnCl2. To regenerate the spent adsorbents, desorption experiments were performed using 0.25 mol L−1 HCl. Here we propose that the activated carbon produced from Amygdalus Scoparia shell is an alternative low-cost adsorbent for Pb(II) adsorption.

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Processing and Characterization of Activated Carbon from Coconut Shell and Palm Kernel Shell Waste by H3PO4 Activation

Ghana Journal of Science ◽

10.4314/gjs.v61i2.9 ◽

2021 ◽

Vol 61 (2) ◽

pp. 91-104

Author(s):

A. Nyamful ◽

E. K. Nyogbe ◽

L. Mohammed ◽

M. N. Zainudeen ◽

S. A. Darkwa ◽

...

Keyword(s):

Activated Carbon ◽

Scale Up ◽

Palm Kernel ◽

Coconut Shell ◽

Palm Kernel Shell ◽

Time Scanning ◽

Shell Waste ◽

H3po4 Activation ◽

Characterization Of Activated Carbon

Palm kernel shell and coconut shell are used as a precursor for the production of activated carbon, a way of mitigating the tons of waste produced in Ghana. The raw Palm kernel shell and coconut shell were activated chemically using H3PO4. A maximum activated carbon yield of 26.3 g was obtained for Palm kernel shell and 22.9 g for coconut shell at 400oC, an impregnation ratio of 1.2 and 1-hour carbonization time. Scanning electron microscopy reveals well-developed cavities of the H3PO4 activated coconut shell and Palm kernel shell compared to the non-activated carbon. Iodine number of 743.02 mg/g and 682.11 mg/g, a porosity of 0.31 and 0.49 and the electrical conductivity of 2010 μS/cm and 778 μS /cm were obtained for the AC prepared from the coconut shell and Palm kernel shell respectively. The results of this work show that high-quality activated carbon can be manufactured locally from coconut shell and Palm kernel shell waste, and a scale-up of this production will go a long way to reduce the tons of coconut shell and Palm kernel shell waste generated in the country.

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Fabrication and Characterization of Activated Carbon from Charcoal Coconut Shell Minahasa, Indonesia

Journal of Physics Conference Series ◽

10.1088/1742-6596/1028/1/012033 ◽

2018 ◽

Vol 1028 ◽

pp. 012033

Author(s):

Meytij Jeanne Rampe ◽

Vistarani Arini Tiwow

Keyword(s):

Activated Carbon ◽

Coconut Shell ◽

Fabrication And Characterization ◽

Characterization Of Activated Carbon

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Preparation and Characterization of Activated Carbon from Lapsi (Choerospondias axillaris) Seed Stone by Chemical Activation with Potassium Hydroxide

Journal of the Institute of Engineering ◽

10.3126/jie.v9i1.10673 ◽

2014 ◽

Vol 9 (1) ◽

pp. 79-88 ◽

Cited By ~ 5

Author(s):

Sahira Joshi ◽

Bhadra Prasad Pokharel

Keyword(s):

Methylene Blue ◽

Activated Carbon ◽

Potassium Hydroxide ◽

Low Cost ◽

Chemical Activation ◽

Sem Images ◽

Monolayer Adsorption ◽

Ft Ir ◽

Characterization Of Activated Carbon

Activated carbon (AC) was prepared from Lapsi seed stone by chemical activation with Potassium hydroxide at 400°C. The AC was characterized by pH, moisture content, Fourier transform-infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), methylene blue (MB) and iodine (I2) number. FT-IR spectra indicated the presence of various oxygen containing functional groups on the surface of AC. SEM images show the highly porous characteristics of AC with full of cavities. The Iodine number of AC revealed that the AC was found to be highly micro-porous. The adsorption of methylene blue by prepared AC was analyzed by the Langmuir and Freundlich adsorption isotherms. The data fitted well to the Langmuir isotherm with monolayer adsorption capacity 158 mg/g. The analysis showed that the AC prepared from Lapsi seed stone activated with potassium hydroxide could be a low-cost adsorbent with favorable surface properties. DOI: http://dx.doi.org/10.3126/jie.v9i1.10673Journal of the Institute of Engineering, Vol. 9, No. 1, pp. 79–88

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