Phytoremediation of Cr(III) by Ipomonea aquatica (water spinach) from water in the presence of EDTA and chloride: effects of Cr speciation.
作者： Jung-Chun Chen , Kai-Sung Wang , Hsien Chen , Chi-Yuan Lu , Lung-Chiu Huang
DOI: 10.1016/J.BIORTECH.2009.12.041
关键词:
摘要: Wastewater is often co-contaminated with chromium, chelating agents, and chloride. Influences of Cr3+ speciation on Cr phytoremediation by Ipomonea aquatica were investigated. MINEQL+ was employed to estimate speciation. Statistic regression used investigate the relationships between accumulation. I. accumulated high concentration (13,217 mg kg−1) in root at 10 l−1 EDTA 10−4 M after 14 d growth. Pearson correlation analysis indicates that significantly correlated Cr–EDTA (r = 0.67, p < 0.05) Cr–Cl 0.91, 0.01). Shoot also 0.97, An increase Cl− 1.72 × enhanced concentration; however, accumulation inhibited (5.76 10−5 M). Microscopic image showed a portion surface.
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