Adsorption Isotherms of Methylene Blue in Aqueous Solution onto Activated Carbons Developed from Vine Shoots (Vitis Vinifera) by Physical and Chemical Methods

Abstract

Carbonaceous adsorbents (CAs) developed from vine shoots (Vitis Vinifera, VS) and characterized texturally were used for the adsorption of Methylene Blue (MB) from aqueous solution. The

Temperature dependence of the electrical conductivity of activated carbons prepared from vine shoots by physical and chemical activation methods

“…Accordingly, the concentration of surface oxygen groups and structures in samples prepared by physical activation should be higher in the order A >> CD > S, which is in line with the variation observed for the conductivity of such ACs. The above sequence for the increasing concentration of oxygen complexes has been corroborated by using FT-IR spectroscopy [86] and by applying the Boehm's method. As shown in Fig.…”

“…The preparation of the ACs was carried out following the methods described in detail by Ruíz-Fernández et al [9,16], which are summarized in Table 1 together with the codes assigned to the resulting products. The textural characterization of the ACs was accomplished by N2 adsorption at -196 ºC, mercury porosimetry, and helium and mercury density measurements.…”

“…This solution is the fastest one but not the best one, both from economic and environmental standpoints. As a way of diversifying the applications of this agricultural residue and increasing its profitability, some previous works have shown that VS are an attractive precursor for the preparation of ACs [9,[13][14][15], which have been successfully applied in the removal of dyes from water streams [16] and in the wine treatment [17].…”