Characteristics of activated carbon produced from biosludge and its use in wastewater post-treatment.
Experimental research into the bench-scale production of activated carbon from waste-activated sludge from water purification, sawdust, peat, and their mixtures, by carbonisation and activation was undertaken. The research work was carried out to determine possible methods of production of cheap activated carbon from local raw materials and to use it in water purification technology. Along with the samples produced, several commercial activated carbons (namely RB-1, F 100, CA (adsorbent from military gas masks), BAY (product of the USSR)) were tested to compare adsorption properties in the adsorption of phenols, xylidines, amines, methylene blue and molasses. It has been found that the activated carbon produced from waste biosludge was of higher quality than that produced from either sawdust or peat, and performed similarly to RB-1 and F100 in adsorption tests. It was also determined that the activated carbon produced from biosludge could possibly be used in the post-treatment of wastewater. Residual sludge from the biological treatment of the wastewater from the purification of oil-shale in the chemical processing industry could cover up to 80% of the need for activated carbon. Some of this activated carbon could be used in the post-treatment of the same water, adsorbing polyalcaline phenols from the initial content of 4 mg l-1 to the demanded level of 1 mg l-1.
Pikkov
L
L
Tallinn Technical University, Tallinn, 19086 Estonia, Finland.
Kallas
J
J
Rüütmann
T
T
Rikmann
E
E
D000327:Adsorption; D000588:Amines / Q000032:analysis; D002244:Carbon / Q000378:metabolism*; D004791:Enzyme Inhibitors / Q000032:analysis; D007220:Industrial Waste; D008751:Methylene Blue / Q000032:analysis; D008965:Molasses / Q000032:analysis; D010636:Phenols / Q000032:analysis* / Q000493:pharmacokinetics; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
D000588:Amines; D004791:Enzyme Inhibitors; D007220:Industrial Waste; D010636:Phenols; D012722:Sewage; D002244:Carbon; D008751:Methylene Blue