文档介绍：The dechlorination of 2,4-dichlorophenol by zero-valent iron
Zhang Wanhui, Liu Guoguang*, Lv Wenying, Li Zhongyang
Faculty of Environmental Science and Technology, Guangdong University of Technology, Guangzhou,
510006, China
* Corresponding author. E-mail: ******@gdut.
Abstract-During the dechlorination of To date, various options have been applied
2,4-dechlorophenol(2,4-DCP) by zero-valent for the removal of anic
iron(ZVI), pH was one of the important pounds in water, such as reverse osmosis,
affecting the dechlorination. The adsorption of ion exchange, coagulation, co-precipitation,
chlorophenol by ZVI and the dechlorination rate catalytic reduction, herbal filtration,
were influenced by pH. The dechlorination of electro-dialysis, adsorption, and
2,4-DCP by ZVI was pseudo-first-order reaction, biodegradation[2]. The physical methods can not
the pseudo-first-order reaction rate constant (ΚSA) degrade the pletely and it costs
were respectively h-1, h-1, much. The chemical methods are affected by
h-1and -1 when pH were , , , and many factors, the reactive condition and the
. According to GC/MS, it was concluded that control of the byproducts plex.
the process of 2,4-DCP’s dechlorination via ZVI Biodegradation has been considered to be an
was: 2,4-DCP → 2-CP or 4-CP → phenol. The effect method which could