PM01 Phytoremediation and Risk Assessment
Exhibit Hall
8:00 AM - Monday
(PM004) Phytoremediation applied to metal contaminated soil using ink berry.
Ishii, M1, Watanabe, I1, Kuno, K1, Uchida, T2, Yamada, R2, 1 Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan2 Sato Kogyo Co., Ltd., Tokyo, Japan
ABSTRACT- Our previous studies showed ink berry grown at metal polluted sites accumulated heavy metals such as Cd and Zn at high level. In this research, ink berry was cultured in nutrient solutions supplemented with Cd or Pb to elucidate metal accumulation ability of ink berry and potency for phytoremediation. Ink berry merely translocated Pb to shoot. Cd concentration of leaf was up to 513 mg/kg and that of stem was up to 1000 mg/kg, however visible symptom was observed by exposing high level of Cd. Trace element concentrations (Li, Mg, Al, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Ag, Cd, In, Cs, Ba, Tl, Pb, Bi, Th, U) of ink berry cultured in various elements contaminated soil and high level Pb contaminated soil were determined by ICP-MS. Ink berry grown in various elements contaminated soil accumulated in several elements in the leaf at exceeding level including Cd (33.3 mg/kg), Cu (160 mg/kg), Zn (2190 mg/kg), Al, Mn, and Sr. Interestingly most element levels of ink berry followed the sequence: leaf>stem>root. In experiment with Pb contaminated soil, Pb was hardly accumulated in shoot. This study showed ink berry had superior ability of accumulating metals except Pb in the shoot. In addition, this plant has high biomass. Therefore, we suggested herein application of ink berry to metal contaminated soils could achieve effective phytoremediation.
Key words: trace element, phytoremediation, ink berry