Hybrid zero-valent iron process for removing heavy metals and nitrate from flue-gas-desulfurization wastewater

Autor:	Yong H. Huang, Xinjun Teng, Cilai Tang, Hui Zeng, Phani K. Peddi
Rok vydání:	2013
Předmět:	Zerovalent iron Inorganic chemistry chemistry.chemical_element Filtration and Separation Analytical Chemistry Flue-gas desulfurization Mercury (element) chemistry.chemical_compound chemistry Wastewater Nitrate Fluidized bed Sewage treatment Magnetite
Zdroj:	Separation and Purification Technology. 118:690-698
ISSN:	1383-5866
DOI:	10.1016/j.seppur.2013.07.009
Popis:	In this paper, we present and discuss the results from the first field demonstration of the hybrid zero-valent iron (hZVI) technology for removing selenium (Se), mercury (Hg), and nitrate from the flue-gas-desulfurization (FGD) wastewater of a coal-fired power plant. By hybridizing zero-valent iron with magnetite and Fe(II) species, the hZVI technology creates a self-sustaining highly-reactive mixture that can achieve rapid reduction, transformation, immobilization and mineralization of various heavy metals, oxyanions and other impurities from aqueous streams in a near-neutral pH environment. The hZVI technology was demonstrated in a 5-week continuous-flow field test conducted on a 30-l fluidized bed system at a power plant. The prototype consistently reduced Hg from ca. 50 to
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::03ab603b004e85b1c0a0a9331f3b015b https://doi.org/10.1016/j.seppur.2013.07.009 Zobrazit plný text záznamu Full Text from ScienceDirect