Evaluation of the Physicochemical Characteristics and Adsorption Efficiency of Activated Carbons Derived from Banana Peels and Coconut Shell: A Comparative Study

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Mohammed Jibrin ◽  
Ahmed Abdulhanan O.
Keyword(s):  
Comparative Study ◽  
Activated Carbons ◽  
Physicochemical Characteristics ◽  
Coconut Shell ◽  
Adsorption Efficiency

Preparation of Activated Carbons from Coconuts Shell for Pb (II) Adsorption

2014 ◽  
Vol 896 ◽  
pp. 149-152 ◽  
Author(s):  
Eka Yusmartini ◽  
Dedi Setiabudidaya ◽  
Ridwan ◽  
Marsi ◽  
Faizal
Keyword(s):  
Activated Carbon ◽  
Activated Carbons ◽  
Order Equation ◽  
Coconut Shell ◽  
Small Particle Size ◽  
Adsorption Efficiency ◽  
Batch Method ◽  
Order Model ◽  
Bet Method ◽  
Pseudo Second Order

The purpose of this study is to prepare activated carbon from coconut shell to be used as an adsorbent for heavy metals. The coconut shell was carbonized at a temperature of 700°C and the resulting carbon is finely milled and sieved through No 200 mesh. Sulfuric acid is used as an activator for this process. The characteristics of the resulting activated carbon were tested and the results are as follows: moisture content 1.641%, ash content of 0.554%, iodine adsorption of 960.21 mg/g and the adsorption of methyl blue 212.1 mg/g. The small particle size of the activated carbon increases the surface area measured using BET method to 398.721 m2/g. Adsorption kinetic and adsorption efficiency of the activated carbon on Pb by batch method follow pseudo second-order equation order model with adsorption capacity at equilibrium equal to 24.491 mg per g Pb (II) adsorbent.

scholarly journals Adsorption of selected pharmaceuticals on activated carbons from water

2018 ◽  
Vol 44 ◽  
pp. 00089 ◽  
Author(s):  
Joanna Lach ◽  
Anna Szymonik ◽  
Agnieszka Ociepa-Kubicka
Keyword(s):  
Salicylic Acid ◽  
Activated Carbon ◽  
Surface Water ◽  
Correlation Coefficient ◽  
Activated Carbons ◽  
Kinetics Equation ◽  
Adsorption Efficiency ◽  
Adsorption From Solutions ◽  
Freundlich Equation ◽  
Treated Sewage

The possibility of using activated carbon for the removal of salicylic acid andiibuprofen sodium has been explored. These compounds are observed in crude and treated sewage and in surface water. The effect of pH on the adsorption efficiency was assessed. Tests were carried out from solutions with pH ranging from 2 to 10 (salicylic acid) and from 6 to 10 (iibuprofen sodium). It was found that the higher pH, the lower the adsorption of the compounds tested. Salicylic acid was most efficiently adsorbed from a solution with pH = 2, in which it occurred mainly in an undissociated form. The achieved efficiency of salicylic acid adsorption from solutions with pH=2 was 91%, while from those with pH=10, it was 55% (Co=4 mmol/L). The efficiency of removing ibuprofen sodium from the pH=6 solution was 64%, while from the pH = 10 solution, 60%.The adsorption of both salicylic acid and ibuprofen sodium follows the kinetics equation of the pseudo-2nd order. For the description of the adsorption isotherms, the Freundlich, Langmuir, Temkin and Dubibin-Radushkevich models were employed. The both compounds are described with the highest correlation coefficient in the case of the Freundlich equation.

scholarly journals Working Nature Of Concrete Using Coconut Shell

2019 ◽  
Vol 8 (5C) ◽  
pp. 1567-1568
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Comparative Study ◽  
Coconut Shell ◽  
The Gift ◽  
Natural Mixture

In this gift experimental investigation a shot is formed to use low price artifact sort of a coconut shell. within the gift issue the natural mixture is replaced by 100%, 20%, halfhour of coconut shell for various grades of concrete like M20, M25. A comparative study is formed on compressive strength between the standard concrete and coconut shell concrete.

Comparative study of dry-mixing and wet-mixing activated carbons prepared from waste printed circuit boards by NaOH activation

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105943-105951 ◽  
Author(s):  
Yujiao Kan ◽  
Qinyan Yue ◽  
Baoyu Gao ◽  
Qian Li
Keyword(s):  
Comparative Study ◽  
Printed Circuit Boards ◽  
Activated Carbons ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Dry Mixing

Two activated carbons have been produced from waste printed circuit boards by NaOH by two methods, dry-mixing and wet-mixing. The carbon prepared by dry-mixing is named as AC. The carbon prepared by wet-mixing is named as WAC.

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