Related Researcher

Author's Photo

Cho, Jaeweon
OWIELAB(Organic-Water Interface Engineering Laboratory)
Research Interests
  • Convergence of Science and Arts, Feces Standard Money (FSM), Water & Energy


Preparation of titanium dioxide (TiO2) from sludge produced by titanium tetrachloride (TiCl4) flocculation of wastewater

DC Field Value Language Shon, H. K. ko Vigneswaran, S. ko Kim, In S. ko Cho, J. ko Kim, G. J. ko Kim, J. B. ko Kim, J. -H. ko 2015-07-02T01:24:19Z - 2015-07-01 ko 2007-02 -
dc.identifier.citation ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.41, no.4, pp.1372 - 1377 ko
dc.identifier.issn 0013-936X ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Sludge disposal is one of the most costly and environmentally problematic challenges of modern wastewater treatment worldwide. In this study, a new process was developed, which has a significant potential for lower cost of waste disposal, protection of the environment and public health, and yield of economically useful byproducts. Titanium oxide (TiO2), which is the most widely used metal oxide, was produced from the wastewater sludge generated by the flocculation of secondary wastewater with titanium tetrachloride (TiCl4). Detailed analyses were conducted to compare TiCl4, ferric chloride (FeCl3), and aluminum sulfate (Al-2(SO4)(3)) flocculation. Removal of organic matter and different molecular sizes by Ti-salt flocculation was similar to that of the most widely used Fe- and Al-salt flocculation. The mean size of Ti-, Fe-, and Al-salt flocs was 47.5, 42.5, and 16.9 mu m, respectively. The decantability of the settled flocs by TiCl4 coagulant was similar to that by FeCl3 coagulant and much higher than that of Al-2(SO4)(3). The photocatalyst from wastewater (PFW) produced by TiCl4 flocculation was characterized by X-ray diffraction, BET surface area, scanning electron microscopy/energy dispersive X-ray, transmission electron microscopy, photocatalytic activity, and X-ray photoelectron spectroscopy. The resulting PFW was found to be superior to commercial TiO2 (P-25) in terms of photocatalytic activity and surface area. The PFW was also found to be mainly doped with C and P atoms. The atomic percentage of the PFW was TiO1.42C0.44P0.14 ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject Flocculation ko
dc.subject Photocatalysis ko
dc.subject Sewage sludge ko
dc.subject Titanium dioxide ko
dc.subject Waste disposal ko
dc.title Preparation of titanium dioxide (TiO2) from sludge produced by titanium tetrachloride (TiCl4) flocculation of wastewater ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-33847186344 ko
dc.identifier.wosid 000244161600050 ko
dc.type.rims ART ko
dc.description.wostc 58 *
dc.description.scopustc 62 * 2015-12-28 * 2015-11-04 *
dc.identifier.doi 10.1021/es062062g ko
Appears in Collections:
UEE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show simple item record


  • mendeley


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