Laboratory of Wastewater Treatment, Water Research and Technologies Centre (CERTE), Technopole of Borj Cedria, Soliman, Tunisia.
Int J Phytoremediation. 2013;15(7):703-13. doi: 10.1080/15226514.2012.723067.
The ubiquitous coexistence of heavy metals and organic contaminants was increased in the polluted soil and phytoremediation as a remedial technology and management option is recommended to solve the problems of co-contamination. Growth of Zea mays L and pollutant removal ability may be influenced by interactions among mixed pollutants. Pot-culture experiments were conduced to investigate the single and interactive effect of cadmium (Cd) and pentachlorophenol (PCP) on growth of Zea mays L, PCP, and Cd removal from soil. Growth response of Zea mays L is considerably influenced by interaction of Cd and PCP, significantly declining with either Cd or PCP additions. The dissipation of PCP in soils was notably affected by interactions of Cd, PCP, and plant presence or absence. At the Pentachlorophenol in both planted and non-planted soil was greatly decreased at the end of the 10-week culture, accounting for 16-20% of initial extractable concentrations in non-planted soil and 9-14% in planted soil. With the increment of Cd level, residual pentachlorophenol in the planted soil tended to increase. The pentachlorophenol residual in the presence of high concentration of Cd was even higher in the planted soil than that in the non-planted soil.
重金属和有机污染物在污染土壤中普遍共存，作为一种修复技术，植物修复被推荐用来解决复合污染问题。混合污染物之间的相互作用可能会影响玉米的生长和污染物的去除能力。通过盆栽实验研究了镉（Cd）和五氯苯酚（PCP）对玉米生长、PCP 和土壤中 Cd 去除的单一和交互作用。玉米的生长受 Cd 和 PCP 相互作用的显著影响，随着 Cd 或 PCP 的添加，玉米的生长明显下降。Cd、PCP 和植物的存在与否对土壤中 PCP 的消解有显著影响。在 10 周的培养结束时，无论是在种植土壤还是非种植土壤中，PCP 的含量都大大降低，在非种植土壤中占初始可提取浓度的 16-20%，在种植土壤中占 9-14%。随着 Cd 水平的增加，种植土壤中残留的五氯苯酚含量趋于增加。在高浓度 Cd 存在的情况下，种植土壤中残留的五氯苯酚含量甚至高于非种植土壤。
