Elimination of Uraemic Toxins and Inflammatory Cytokines from Human Plasma by Biomass-derived Carbon Adsorbents

摘要

Nanostructured carbons were obtained from renewable materials, e.g.: vegetable biomass such as rice husk (RH) and apricot stones (AS), via BbPCVactivation for 1-1.5 h, in a self-generated atmosphere at 400-500 °C and HsPCVprecursor (wt/wt) impregnation ratio of 2:1 for all the samples. Sample CAS-P-500 was obtained via HsPCvactivation of AS at 500 °C for 1 h. 1 M hot alkaline solution was used for silica removal from initial RH (sample CRH-P-500 B/A) and carbonized RH (samples CRH-P-400 A/B and CRH-P-500 A/B). Elemental analysis of samples using X-ray fluorescence spectroscopy and VARIO MICRO CUBE elemental analyzer detected up to 1% of remained phosphorus and approximately 88% of carbon. SEM characterization and methylene blue adsorption studies revealed that highly porous materials were obtained. Mesoporosity of these samples was also established by means of pore size distributions obtained from N2 adsorption and mercury intrusion porosimetry analysis.