Effects of Reverse Micelles-Complexation-Supercritical CO2 Extraction Conditions on Removal of Pb, Hg and as Ions in Lotus Leaf

Jun Ji; Yao Ding; Chang Yan Yang; Hai Tao Huang; Yi Gang Ding

doi:10.4028/www.scientific.net/AMR.233-235.585

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Effects of Reverse Micelles-Complexation-Supercritical CO₂ Extraction Conditions on Removal of Pb, Hg and as Ions in Lotus Leaf
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Effects of Reverse...

Effects of Reverse Micelles-Complexation-Supercritical CO₂ Extraction Conditions on Removal of Pb, Hg and as Ions in Lotus Leaf

Abstract:

Removal rates of Pb, Hg and As ions in lotus leaf extracts obtained by Micelles- complexation-supercritical CO₂ extraction through an orthogonal experiment(L₁₆(4⁵)) were investigated to get the best extraction conditions. The results of orthogonal experiments indicated that the removal rate of Pb, Hg and As ions trace heavy metal ions is high by complexaction and reverse micelles in supercritical carbon dioxide (Sc-CO₂), and the removal rate of Pb, Hg, As from lotus leaf is 87.85%, 89.19% and 84.72% respectively with the loss rate of total flavonoids is 8.73% under the potential optimum conditions which are 50°C, 20 MPa, 1.5 h, the concentration of Triton X-100 of 0.15 mol.L^-1, the mass of complexing agent is 0.1 g.