Volatile organic compounds characteristics during the ZnCl₂ additives biosolid pyrolysis

This study selected the biosolid of wastewater treatment plant of petrochemical industry as the raw material. The biosolid immersed with 0.5 to 5 M of ZnCl₂ solution and pyrolyzed at different temperatures. This research investigated the compositions of volatile organic compounds during the pyrolytic process. Results indicated the benzene-ringed VOCs had the highest concentration in the vicinity of 10 min for 3 M ZnCl₂-immersed biosolid pyrolyzed at 600 °C. Dichloromethane was the major component of chlorinated volatile organic compounds. Dimethylsulfide was the major compounds of sulfur organic compounds in the pyrolytic exhaust gas.