Adsorption Equilibrium of Nitrates Ions onto Oil Palm Shells-based Activated Carbons

Abdoul Ntieche Rahman; Kouotou Daouda; Hambate Gomdje Valery

Authors

Abdoul Ntieche Rahman
Kouotou Daouda
Hambate Gomdje Valery

activated carbons; isotherms; nitrates; oil-palm shells; physicochemical activation

Abstract

In this study, two oil palm shells-based activated carbon adsorbents were prepared by physicochemical activation and were evaluated for their ability to remove nitrate ions from an aqueous solution in a batch process. Steam was used as physical activation agent in combination with H 3 PO 4 and KOH as chemical activating agents, respectively. The H 3 PO 4 -carbon (ACOPS-H 3 PO 4 ) and the KOH-carbon (ACOPS-KOH) oil palm shell activated carbons had a BET surface area of 564 and 838 m 2 /g, respectively, and were essentially microporous. The effects of various parameters such as contact time, initial solution pH and adsorbent dosage on nitrate ions uptake were investigated. The experimental results obtained showed that the adsorption equilibrium was reached within 70 mn. The amount of nitrate intake was observed to gradually increase when the amount of adsorbent used was varied from 0.2 to 1.2 g reaching a maximum value as from 1 g of adsorbent.

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Adsorption Equilibrium of Nitrates Ions onto Oil Palm Shells-based Activated Carbons. (2018). Global Journal of Science Frontier Research, 18(B2), 37-52. https://www.journalofscience.org/index.php/GJSFR/article/view/2208

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