Activated Carbons Prepared from Pine Wastes for the Uptake of Organic Compounds from Aqueous Solution

Abstract

The feasibility of preparing chemically-activated carbons from a char obtained by the gasification of pine wastes has been studied. The optimised conditions for producing activated carbons with well-developed porosity were investigated and the influence of activating agent (KOH)/char ratio, temperature and duration of the pyrolysis process established. Additionally, for comparative purposes, two different designs for the stainless-steel basket in which the sample to be activated was inserted were tested in selected cases to determine the quality of the activated carbons produced. The results obtained showed that micropore development depended strongly on the KOH/char ratio, which was the most important variable under the conditions studied. The activated carbon with the largest adsorption capacity produced had a well-developed porosity, providing a total micropore volume of 0.678 cm3/g and an apparent surface area (as estimated by the DR method) of 1908 m2/g. The activated carbons prepared exhibited high benzene adsorption rates that increased with increasing micropore volume. The initial adsorption coefficient (γ) appeared to correlate strongly with the micropore volume deduced from nitrogen adsorption data.

ANALYSIS OF LEAD WASTE ABSORPTION (Pb) WITH ACTIVATED CHARCOAL ADSORBENT FROM PALM SHELL

“…Activated charcoal is a charcoal with the configuration of carbon atoms that released from bonding with other elements and the pores are free from other elements or impurities, therefore activated carbon is recognize as carbon with a large surface area [1]. In general, activated charcoal can be made using coal and other material which is containing lignocellulose as raw element [2]. One of the potential materials that have an ingredient of lignocellulose to produce activated charcoal is the shell of oil palm [3].…”

Adsorption properties of activated carbon prepared from pre-carbonized petroleum coke in the removal of organic pollutants from aqueous solution

“…The most reliable process for removing of aromatic compounds from aqueous solutions is adsorption employing activated carbon as the adsorbent [11][12][13][14]. The adsorption of aromatic organic molecules from water onto activated carbon has garnered increasing interest during the last three decades, in which there have been phenomena of over population and industrial http://carbonlett.org (Suez-Egypt), at 673 K, in nitrogen atmosphere for 2 h. KOHactivated sample APC was obtained by the pyrolysis of KOHimpregnated PC at 1023 K for 2 h, in nitrogen atmosphere; the KOH: PC ratio was 2:1.…”

Adsorption of chlorophenol, chloroaniline and methylene blue on fuel oil fly ash

“…To this scope, many high-carbon materials have been recently tested deriving from either available bio-resources or industrial wastes [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. These sorbents comprise pyrolyzed agricultural wastes and wastes from combustion processes which can be directly employed without any prior beneficiation treatment.…”