32 0

Simultaneous removal of nitrate, phosphate, and fluoride using a ZVI- packed bed electrolytic cell

Title
Simultaneous removal of nitrate, phosphate, and fluoride using a ZVI- packed bed electrolytic cell
Author
박주양
Keywords
Nitrate reduction; Electrolytic cell; Zero-valent iron; Electrocoagulation; ELECTROCOAGULATION PROCESS; AQUEOUS-SOLUTIONS; DRINKING-WATER; WASTE-WATER; IRON-OXIDE; ALUMINUM; ELECTRODES; REDUCTION; HYDROXIDE
Issue Date
2014-01
Publisher
TAYLOR & FRANCIS INC, 520 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
Citation
Desalination and Water Treatment, Vol.52 No.4-6, [2014], p.737-743
Abstract
The present study aims to treat wastewater containing anionic contaminants such as nitrate, phosphate, and fluoride generated by the etching process of the semiconductor industry. The ZVI-packed bed electrolytic cell was developed to treat the contaminants using reduction, adsorption, and precipitation by electrochemical reactions. The 1L reactor was operated with a voltage of 600V, a flow rate of 30mL/min (HRT: 12min, EBCT: 33min), and a packing ratio of 2:1 (v/v, silica sand to ZVI). Synthetic wastewater consisting of 30 mg/L as N, 10-50mg/L as PO4,3- and 5-30mg/L F- was used for the experiment. Different combinations of anionic contaminants were tested in the experimental setup. Results indicated that nitrate, phosphate, and fluoride were removed at greater than 90%. When the reactor was operated without nitrate to act as a support electrolyte, phosphate, and fluoride removal efficiencies dropped drastically. Ammonia was produced during nitrate reduction, which led to iron oxidation. The FESEM and EDX analyses were performed to further investigate the electrochemical behavior in the ZVI-packed bed electrolytic cell.
URI
http://doi.org/10.1080/19443994.2013.827321http://hdl.handle.net/20.500.11754/46945
ISSN
1944-3994; 1944-3986
DOI
10.1080/19443994.2013.827321
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE