CHENG Yue, Tang Weibo, Xiao Zhiguo,YU Shuzhen
(School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: Carboxymethyl cellulose (CMC) was used as an embedding agent of nanoscale zero valent iron (NZVI) for the degradation of trichloromethane (TCM) and lead (II) in simulated wastewater. The effects of pH, initial concentrations of pollutants, NZVI dosage, and reaction time were studied. The experimental results showed that the optimum experimental conditions were as follows: pH=5, the initial concentrations of chloroform and lead(II) were 0.4 and 40 mg/L respectively, the CMC-wrapped NZVI dosage was 1.00 g/L, and the reaction time was 3 h. Under these conditions, the removal rates of chloroform and lead (II) were 96.1% and 94.75% respectively, and their total removal was 95.4%.

Key words: carboxymethyl cellulose; embedding; nanoscale zero valent iron; chloroform; lead ion; removal rate