ASSESSMENT OF DIFFERENT ACTIVATED CARBON SAMPLES USED AS AN STABILIZING ADDITIVE IN THE PRODUCTION OF RECYCLED PLASTIC AGGREGATE FROM WEEE PLASTICS

ARIEL L. CAPPELLETTI; PAULA M. UBERMAN; LUCAS PEISINO; LUCAS COLMAN; ROSANA GAGGINO; JERONIMO R. KREIKER

REVISTA INTERNACIONAL DE CONTAMINACIóN AMBIENTAL

CENTRO CIENCIAS ATMOSFERA UNAM

Lugar: México; Año: 2021 vol. 37 p. 601 - 609

0188-4999

Waste from electrical and electronic equipment (WEEE) grew significantly over the last twenty years. The plastic fraction ofWEEE (WEEEP) represents about20 % of the total massandnowadays it does not have a properfinal disposal, which arise several concerns due to its accumulation and toxicity. n previous works we reported the results of a recycled plastic aggregated (RPA) developed using the core-shell strategy, consisting of a core of WEEEPand a cement matrix with stabilizing additives (activated carbon) asa shell.In this article we present the results of evaluate different typesand dosagesof activated carbon samples in theamount of brominated flame retardant (mainly tetrabromobisphenol-A) leached in curing water of RPAs. Then wequantifiedthe organic compounds using extraction with organic solvent and gas chromatography methods(CG-FID). Iodine Number (IN) was experimentally determined and a specific surface area was calculated for each activated carbonsampleemployed in this study. A clear relationship can be established between the characteristics of the activated carbonusedand the amount of tetrabromobisphenol-A and bisphenol-A leached.These results representan easy method to predict the stabilizing performance of a given activated carbon from its IN. These findings are very important because, for productive ventures, the mesoporous properties of the supplied activated carboncan change from batch to batch,allowing take the necessary actions to ensure the correct stabilization of the contaminants present in WEEEP.