title: Phyto-remediation potential of Ipomoea aquatica for Cr(VI) mitigation.
abstract: Phyto-remedial efficiency of Ipomoea aquatica was examined at different experimental conditions for a period of 3 months. This plant was selected due to its easy establishment, tolerance and growing easiness. In all trials, the I. aquatica was grown in coir dust to ensure an inert medium. Essential growth nutrients were supplied externally using Albert solution. Once plant growth conditions were fixed, the model system was spiked with Cr(VI) solution in the range of 7-90 ppm. Up to 28 ppm Cr(VI), I. aquatica exhibits uniform absorption characteristics showing over 75% removal of added Cr(VI). At this stage I. aquatica was not affected and it showed no toxicity symptoms. Therefore, it is suited as a potential phyto-remediant. Further I. aquatica is a vegetable particularly in Asian region; therefore caution has to be taken when selecting it for human consumption due to its high chromium accumulation capacity.
authors.affiliation: Faculty of Agriculture, Rajarata University of Sri Lanka, Puliyankulama, Sri Lanka.
authors.forename: Aruni
authors.initials: A
authors.lastname: Weerasinghe
authors.forename: Sanduni
authors.initials: S
authors.lastname: Ariyawnasa
authors.forename: Rohan
authors.initials: R
authors.lastname: Weerasooriya
mesh_terms: D001673:Biodegradation, Environmental; D002857:Chromium / Q000378:metabolism*; D027741:Ipomoea / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D018547:Plant Stems / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D014874:Water Pollutants, Chemical; D002857:Chromium; C074702:chromium hexavalent ion