Faisal Muhammad, Hasnain Shahida
Department of Botany, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan.
Int J Phytoremediation. 2005;7(4):271-7. doi: 10.1080/16226510500327111.
This study deals with the use of three chromium-resistant bacterial strains (Ochrobactrum intermedium CrT-1, Brevibacterium CrT-13, and CrM-1) in conjunction with Eichornia crassipes for the removal of toxic chromium from wastewater. Bacterial strains resulted in reduced uptake of chromate into inoculated plants as compared to noninoculated control plants. In the presence of different heavy metals, chromium uptake into the plants was 28.7 and 7.15% less at an initial K2CrO4 concentration of 100 and 500 microg ml(-1) in comparison to a metal free chromium solution. K2CrO4 uptake into the plant occurred at different pHs tested, but maximum uptake was observed at pH 5. Nevertheless, the bacterial strains caused some decrease in chromate uptake into the plants, but the combined effect of plants and bacterial strains conduce more removal of Cr(VI) from the solution.
本研究探讨了三种耐铬细菌菌株（中间苍白杆菌CrT-1、短杆菌CrT-13和CrM-1）与凤眼莲联合用于去除废水中有毒铬的情况。与未接种的对照植物相比，细菌菌株导致接种植物对铬酸盐的吸收减少。在存在不同重金属的情况下，与无金属的铬溶液相比，当初始K2CrO4浓度为100和500微克/毫升时，植物对铬的吸收分别减少了28.7%和7.15%。在测试的不同pH值下，植物均能吸收K2CrO4，但在pH 5时吸收量最大。然而，细菌菌株导致植物对铬酸盐的吸收有所减少，但植物和细菌菌株的联合作用能使溶液中更多的Cr(VI)被去除。
