Phytoremediaton of diethylene glycol contaminated wastewater by Echinodorus cordifolius
Journal article
Authors/Editors
No matching items found.
Strategic Research Themes
No matching items found.
Publication Details
Author list: Sriprapat W., Thiravetyan P.
Publisher: Taylor and Francis Group
Publication year: 2011
Journal: International Journal of Phytoremediation (1522-6514)
Volume number: 13
Issue number: 6
Start page: 592
End page: 600
Number of pages: 9
ISSN: 1522-6514
eISSN: 1549-7879
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
Diethylene glycol (DEG) is one of several diols used as a raw material in the production of plasticizers and polyester resins. It has been associated with a number of mass poisonings in several countries. Conventional methods of remediation of DEG contaminated wastewaters are still not very effective. This paper presents an alternative method for remediation of DEG-contaminated waters using the plant Echinodorus cordifolius. The effects of DEG on E. cordifolius were studied along with the plant's efficiency at treating DEG-contaminated wastewater in a constructed wetland. We found that DEG was toxic to the plants with an LD50 of 6,238 mg L-1. The plants exhibited decreased water uptake and showed wilting, chlorosis and necrosis. SEM images showed injury to the cortex tissue. In the constructed wetland, E. cordifolius plants were able to remove and degrade DEG from wastewater, decreasing the pH from 12 to 6.8 and the COD and TDS by approximately 98% and 67%, respectively, in 7 days, while accumulating Ca in the cells. ฉ Taylor & Francis Group, LLC.
Keywords
Diethylene glycol (DEG), Echinodorus cordifolius
Contact Information