ADSORPTION STUDY OF WASTE MATERIALS AS POTENTIAL ADSORBENTS FOR POLLUTANT REMOVAL AND STORAGE

This work presents a characterization of the textural properties and the CO2 adsorption capacity of carbonized products prepared by pyrolysis of sewage sludge. A comparison is made between variants with and without water steam activation. A solid residue is prepared as a low-cost adsorbent for removing and capturing CO2 and pollutants. The CO2 adsorption measurements were made with the use of gravimetric and manometric sorption devices. The adsorption capacity values of CO2 range from 0.24 mmol/g (material activated by water steam at 900 degrees C) to 1.33 mmol/g (non-activated material at 900 degrees C). Water steam at 900 degrees C damages the material. The adsorption capacities demonstrate that carbonized sewage sludge is a promising adsorbent for removing and capturing CO2 and pollutants, and that there is a favorable relationship between cost and adsorption capacities.