Title :
Degradation of pentachlorophenol by nanoscale Fe and Ni/Fe particles
Author :
Cheng, Rong ; Li, Bin ; Zeng, Fangang ; Qi, Lu ; Hongchen Wang ; Wang, Hongchen
Author_Institution :
Sch. of Environ. & Natural Resources, Renmin Univ. of China, Beijing, China
Abstract :
Pentachlorophenol (PCP), a notoriously recalcitrant and toxic organic contaminant, was investigated for its degradation with nanoscale Fe and Ni/Fe particles. Compared with the bare nano Fe, the bimetallic Ni/Fe nanoparticles exhibited much higher reactivity. The rate of PCP transformation can be described by pseudo first-order kinetics, and the apparent rate constants were calculated to be 0.04 and 1.19 h-1 with the nanoscale Fe and Ni/Fe, respectively. The enhanced performance of the bimetallic nanoparticles may be attributed to the increased of surface area, generation, storage and activation of hydrogen, and also unique nano- and subnano- scale structures formed on the nanoparticle surface.
Keywords :
chemical technology; contamination; iron; nanoparticles; organic compounds; reaction rate constants; toxicology; Fe; NiFe; PCP transformation; bimetallic nanoparticles; degradation; enhanced performance; hydrogen activation; nanoparticle surface; nanoscale particles; notoriously recalcitrant organic contaminant; pentachlorophenol; pseudo first-order kinetics; rate constants; storage; subnano-scale structures; surface area; toxic organic contaminant; Chemicals; Degradation; Iron; Kinetic theory; Nanoparticles; Nanoscale devices; Nickel; chlorinated phenol; kinetics; nanoparticles; remediation; zero valent iron;
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
DOI :
10.1109/RSETE.2011.5964956
