IMPROVED EFFICIENCY FOR THE REMOVAL OF CADMIUM FROM AQUEOUS SOLUTION USING CELLS OF THE CYANOBACTERIUM PHORMIDIUM ANGLISTISSIMUM PRE-TREATED WITH SODIUM HYDROXIDEDUANGRAT INTHORN, NAMPHUNG DUNGKOKKRAUAD AND ARAN INCHAROENSAK
The filamentous cyanobacterium Phormidium angustissimum was examined for its capacity to remove cadmium from aqueous solution using both non-treated and Na0H-treated cells. For non-treated cells the adsorption equilibrium was attained in 10 min and Cd removal ability was 81% with the optimum pH at 6.5. The maximum adsorption (ti ma,) of Cd was 116 mg/g dry wt. Pretreatment of cells by NaOH could increase the Cd removal ability and the adsorption equilibrium was also attained in 10 min. The presence of either Ca2+ or Mg2+ reduced the ability of the cells to remove Cd with a higher Cd removal ability observed for the Na0H-treated cells. A 2-fold increase in ti,nat value of 238 mg/g dry wt.was found for the NaOH treated cells.
Enter your contact information below to receive full paper.