The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

Commercial beech wood char characterized by low volatile matter (5.3%) and high carbon content (94.5 %) was initially used as a potential feedstock to obtain the activated carbon for methane sorption. Micro- and mesopores volumes were determined to be at the level of 0.21 cm³∙g^-1, while the specific surface area of the material was determined to be at the level of 416 m²∙g^-1. Carbonization carried out at the temperature range of 750-900 ^oC resulted in slight increase of the pore volume (up to the value of 0.23 cm³∙g^-1) and the specific surface area (up to the value of 480 m²∙g^-1). Upon the steam activation (up to the 50 % loss of the organic mass) the specific surface area increased substantially and was within the range of 887 - 943 m²∙g^-1 together with mico- and mesopores volumes that was within the range of 0.54 - 0.58 cm³∙g^-1. The maximum methane adsorption was determined for the sample activated at a temperature of 800 ^oC – 17.7 g∙kg^-1 with a process reversibility of 84.2%. Considering the beech wood char price, its availability and well-known methods of its surface structure improvement, the obtained active carbons are interesting for their testing on a larger scale.

Keywords: adsorption; biomass; active carbon; steam activation; carbonization