Stabilization of chromium ore processing residue (COPR) with nanoscale iron particles

Journal of Hazardous Materials
Jiasheng Cao, Wei-Xian Zhang

Abstract

Laboratory batch experiments were conducted on heavily contaminated groundwater and chromium ore processing residue (COPR) samples to determine the rate and extent of hexavalent chromium [Cr(VI)] reduction and immobilization by nanoscale iron particles. Laboratory synthesized nanoscale iron particles (<100 nm, specific surface area 35 m(2)/g) were used for this work. Groundwater ([Cr(VI)]=42.83 +/- 0.52 mg/L, pH 11.0+/-0.5) and COPR samples ([Cr(VI)] = 3280 +/- 90 mg/kg) were collected from an industrial site in New Jersey. Cr(VI) in the water and COPR samples was quickly reduced and precipitated out of the aqueous solution. The surface area normalized reaction rate constant of Cr(VI) reduction by nanoscale iron particles was 0.157 +/- 0.018 mg m(-2) min(-1), about 25 times greater than that by iron powders (100 mesh). One gram of nanoparticles can reduce 84.4-109.3mg Cr(VI) in the groundwater and 69.3-72.7 mg Cr(VI) in the COPR. This reduction capacity is 50-70 times greater than that of iron powders under the same experimental conditions.

Citations

Jul 20, 2011·Environmental Monitoring and Assessment·Ritu SinghRana Pratap Singh
Apr 16, 2011·Journal of Environmental Monitoring : JEM·Shujing LiZhaohui Jin
Jun 2, 2014·Journal of Hazardous Materials·Yu WangEric Pokeung Tsang
Oct 15, 2011·Bulletin of Environmental Contamination and Toxicology·Ritu SinghRana Pratap Singh
Mar 3, 2012·The Science of the Total Environment·Yongchao LiZongming Xiu
Oct 3, 2009·Journal of Hazardous Materials·Jon R Kiser, Bruce A Manning
Jun 24, 2009·The Science of the Total Environment·Bing GengXinhua Qi
May 10, 2015·Journal of Hazardous Materials·Marzieh Taghipour, Mohsen Jalali
May 6, 2015·Journal of Hazardous Materials·Sri Bala Kameswari KanchinadhamChitra Kalyanaraman
Jun 26, 2015·Applied Geochemistry : Journal of the International Association of Geochemistry and Cosmochemistry·Mathew P WattsJonathan R Lloyd
Mar 8, 2014·Environmental Technology·Christine M RogersSamuel Shaw
Dec 17, 2008·Journal of Hazardous Materials·Xin ZhangZu-liang Chen
Jan 1, 2013·Environmental Science. Processes & Impacts·Weile YanWei-xian Zhang
Jun 27, 2015·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Juan ChenMei Hong
Dec 5, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Hualin ChenYufeng Wang
Oct 25, 2008·Journal of Environmental Quality·Daniel W ElliottWei-Xian Zhang
Jan 30, 2014·Environmental Science. Processes & Impacts·Shaolin LiWei-xian Zhang
Dec 24, 2018·The Science of the Total Environment·Yunyi LiYangsheng Liu
Jun 12, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Janet E Macdonald, Jonathan G C Veinot
Jan 26, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Maria BaikousiMichael A Karakassides

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