%0 Journal Article
%T Perennial Plants in the Phytoremediation of Lead-contaminated Soils
%A K. Cho-Ruk
%A J. Kurukote
%A P. Supprung
%A S. Vetayasuporn
%J Biotechnology
%D 2006
%I Asian Network for Scientific Information
%X In this experiment, three local perennial plant species, Alternanthera philoxeroides, Sanvitalia procumbens and Portulaca grandiflora, were examined for their ability to uptake lead from lead contaminated soils (75 mg kg-1). Lead concentration in soil under all treatments decreased between 30-80% (62.61-23.18 mg kg -1) when compared to the control (75 mg kg -1). In all treatments, lead accumulation in the plants was higher on day 45 than what was found on days 55 and 65. Among these three species, A. philoxeroides showed a greater potential for lead accumulation than P. granaiflora and. S. procumbens. On day 45, A. philoxeroides showed significant differences in lead accumulation (29.99%) compared to that from P. granaiflora (13.03%) and S. procumbens (16.44%). Even though the amount of lead extracted by these three plants was small, the results showed that A. philoxeroides had the ability to extract an approximately 1.3-1.8 times greater amount than P. grandiflora and S. procumbens. Phytoremediation technology is environmentally friendly and cost-effective; A. philoxeroides may be a practicable alternative for protecting the soil in Thailand from leaching lead.
%K Perennial plant
%K A. philoxeroides
%K S. procumbens
%K P. grandiflora
%U http://docsdrive.com/pdfs/ansinet/biotech/2006/1-4.pdf