Planting Soybean in Cd-, Cu-, or Zn-Contaminated Soils to Assess its Feasibility in Further Producing Biodiesel (pp.409-420)
Authors: (Hung-Yu Lai, Bo-Ching Chen, Hsuen-Li Chen, Chih-Jen Lu, Zueng-Sang Chen, Department of Post-Modern Agriculture, MingDao University, Peetow, Changhua, Taiwan, and others)
Abstract: There are many farmlands been contaminated with heavy metal (HM) in central
Taiwan resulted from the irrigation using river water contaminated with HMs. According
to the Soil and Groundwater Pollution Remediation Act (SGWPR Act) of Taiwan, these
lands can not planting edible crops until suitable techniques are conducted to decrease the
total concentration of HM in soils to conform to the Soil Control Standard (SCS).
However, some of the foliar crops still accumulated high concentration of HM in the
edible parts even the concentration of HM of the remediated sites is below the SCS.
Planting suitable crop species is especially important in this situation and these
contaminated sites after remediation can be reused. Soybean, a biomass crop further used
to produce biodiesel, seems feasible to plant in the farmlands in this situation. This
manuscript reports previous results used pot experiments to investigate the accumulation
of HM by various parts of soybean planted in the artificially cadmium- (Cd-), copper-
(Cu-), or zinc (Zn-) contaminated soils with different concentrations. The aim is to assess
the feasibility of planting soybean in the HM-contaminated soils to produce biodiesel.