Preparation of Copper Oxide Loaded Activated Carbon by Waste Sawdust for Acid Red GR Wastewater Treatment

摘要

The waste wood dust was utilized to prepare the copper oxide loaded activated carbon for the treatment of the printing and dyeing wastewater (acid red GR wastewater). The response surface assisted with Design-Expert 7.0 software was used to optimize the process. The secondary multiple regression models for the color and COD removal rates were established and proven to be significant. The optimum process conditions determined by the software were: copper nitrate (0.5mol/L) 15mL, ratio of liquid to solid 56, activation temperature 690°C and activation time 2.1h, under which the color and COD removal rates reached 99.8% and 88.34%, respectively.