Development of a regenerable system employing silica-titania composites for the recovery of mercury from end-box exhaust at a chlor-alkali facility

11Citations
Citations of this article
12Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

The release of mercury to the environment is of particular concern because of its volatility, persistence, and tendency to bioaccumulate. The recovery of mercury from end-box exhaust at chlor-alkali facilities is important to prevent release into the environment and reduce emissions as required by NESHAP (National Emission Standards for Hazardous Air Pollutants). A pilot-scale photocatalytic reactor packed with silica-titania composite (STC) pellets was tested at a chloralkali facility over a 3-month period. This pilot reactor treated up to 10 ft3/min (ACFM) of end-box exhaust and achieved 95% removal. The pilot reactor was able to maintain excellent removal efficiency even with large fluctuations in influent mercury concentration (400-1600 μg/ft3). The STC pellets were regenerated ex situ by regeneration with hydrochloric acid and performed similarly to virgin STC pellets when returned to service. On the basis of these promising results, two full-scale reactors with in situ regeneration capabilities were installed and operated. After optimization, these reactors performed similarly to the pilot reactor. A cost analysis was performed comparing the treatment costs (i.e., cost per pound of mercury removed) for sulfur-impregnated activated carbon and the STC system. The STC proved to be both technologically and economically feasible for this installation. Copyright 2008 Air & Waste Management Association.

Cited by Powered by Scopus

Removal of trace level aqueous mercury by adsorption and photocatalysis on silica-titania composites

57Citations
N/AReaders
Get full text

A pilot-scale TiO<inf>2</inf> photocatalytic system for removing gas-phase elemental mercury at Hg-emitting facilities

33Citations
N/AReaders
Get full text

Characterization of HF-catalyzed silica gels doped with Degussa P25 titanium dioxide

21Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Stokke, J. M., & Mazyck, D. W. (2008). Development of a regenerable system employing silica-titania composites for the recovery of mercury from end-box exhaust at a chlor-alkali facility. Journal of the Air and Waste Management Association, 58(4), 530–537. https://doi.org/10.3155/1047-3289.58.4.530

Readers over time

‘14‘16‘18‘19‘21‘2201234

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 5

56%

Researcher 4

44%

Readers' Discipline

Tooltip

Environmental Science 5

63%

Engineering 1

13%

Agricultural and Biological Sciences 1

13%

Medicine and Dentistry 1

13%

Save time finding and organizing research with Mendeley

Sign up for free
0