Show simple item record

dc.contributor.author Hettiarachchi, M
dc.contributor.author Karunarathne, S
dc.contributor.author Dissanayake, K
dc.contributor.editor Karunaratne, S
dc.date.accessioned 2022-06-22T03:41:18Z
dc.date.available 2022-06-22T03:41:18Z
dc.date.issued 2006-10
dc.identifier.citation Hettiarachchi, M., Karunarathne, S., & Dissanayake, K. (2006). Sword ferns for phytoremediation of chromium contaminated waters. In S. Karunaratne, D.M.D.O.K. Dissanayake, N. Ratnayake, & S.P. Chaminda (Eds.), Proceedings of 1st Annual Conference on Mining for Sustainable Development – A Multidisciplinary Approach (pp. 31-34). Department of Earth Resources Engineering, University of Moratuwa en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18329
dc.description.abstract Chromium is a highly soluble transition metal of vital industrial importance. It occurs in both trivalent and hexavalent forms. Due to many well identified adverse impacts of chromium to human health and natural ecosystems, treatment of chromium contaminated waters has become a major concern and challenge for environmental engineers. The currently practiced conventional mechano-chemical treatment systems for remediation of chromium contaminated waters have high operational costs, especially when the concentrations are low. Therefore alternative natural attenuation systems are becoming the focus of modem research. This paper presents a research to asses the applicability of Common Sword Ferns in phytoremediation of water contaminated with low or medium concentration of bot trivalent and hexavalent chromium. Saword ferns (N. Exaltata) showed very high removal rates (about 99%) in a Hydroponic medium upto 50 ppmcontamination of T-Cr. The mass balance shows that most of the Cr taken up by the plant is retained in the roots (about 75 % or 3500 mg/kg). Little is translocated to above-ground tissues (4% or 120 mg/kg). Therefore the mechanism of removal is mainly Rizofiltration. The mechanism of uptake may be Biosorption or Active uptake by root cells. N. Exaltata hardly shows any symptoms ofPhyto-toxic affects upto 50 ppm of Cr +3, and 15 ppm ofCr+6• But in a Soil water system mass balances show that most of water soluble Cr+3 is sorbed to soil (about 90%). N. exaltata is poor in de-mineralizing, mobilizing and uptake of soil bound Cr +3. Sand has a remarkable capacity to immobilize Cr+3 in water. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Plant base systems en_US
dc.subject Root zone en_US
dc.subject Treatment en_US
dc.title Sword ferns for phytoremediation of chromium contaminated waters en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2006 en_US
dc.identifier.conference 1st Annual Conference on Mining for Sustainable Development - A Multidisciplinary Approach en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 31-34 en_US
dc.identifier.proceeding Proceedings of 1st Annual Conference on Mining for Sustainable Development - A Multidisciplinary Approach en_US
dc.identifier.email senaka@earth.mrt.ac.lk en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record