Rapid and complete dechlorination of PCP in aqueous solution using Ni-Fe nanoparticles under assistance of ultrasound

Chemosphere
Wei-Hua ZhangShuo Chen

Abstract

The Ni-Fe bimetallic particles have been laboratory prepared using sodium borohydride (NaBH4) as the reductant to reduce Ni2+ and Fe2+ in aqueous solution simultaneously, and characterized by TEM, XRD, BET and XPS. The particles were proved to be nanoscale amorphous alloy with an average diameter of about 30 nm and a BET surface area of 20.9 m2 g(-1). Experiments for dechlorination of pentachlorophenol (PCP) by the Ni-Fe bimetallic nanoscale particles in aqueous solutions were carried out under the enhancement of ultrasound. Major factors that influence the dechlorination efficiency, such as initial pH value, Ni content in the Ni-Fe particles, and output power of ultrasonic irradiation, were investigated. The results indicated that Ni-Fe nanoscale bimetallic particles were very effective for the dechlorination of PCP. Dechlorination efficiency was 46% in 30 min under the optimal condition without assistance of ultrasound, whereas it increased to 96% when ultrasonic irradiation was present. Initial pH value showed apparent effect on the dechlorination. As the pH varied from acidic condition to neutral condition, the dechlorination efficiency decreased dramatically. In addition, the dechlorination efficiency was improved with inc...Continue Reading

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Citations

Apr 25, 2012·Environmental Science and Pollution Research International·Hanzhong JiaChuanyi Wang
Dec 18, 2012·Environmental Technology·Haiyan KangZhaohui Jin
Apr 29, 2014·Journal of Hazardous Materials·Xuchen Liu, Xingyi Wang
Oct 5, 2014·Materials Science & Engineering. C, Materials for Biological Applications·Mehdi BaghayeriRahele Zarghani
Jan 24, 2016·Environmental Pollution·Mayra A NascimentoClaudio F Lima
Mar 19, 2013·Journal of Hazardous Materials·Nguyen Thanh DienMoo Been Chang
Nov 28, 2012·Journal of Hazardous Materials·Jiang XuXinhua Xu
Aug 16, 2015·Journal of Hazardous Materials·Yongming JuDionysios D Dionysiou
Feb 11, 2015·Journal of Hazardous Materials·Yongming JuDionysios D Dionysiou
Sep 1, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Haiying LinQingxiang Zhou
Jul 25, 2019·Environmental Science and Pollution Research International·Buddhika GunawardanaNaresh Singhal

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