Toxic cadmium ions removal by isolated fungal strain from e-waste recycling facility
Ramasamy Rajesh Kumara, Jae Taek Lee and Jae Young Cho
The use of biomaterials for removing heavy metals from contaminated wastewater has emerged as a potential alternative method to conventional techniques. Fungi have been investigated as a biosorbent because of its capability to sequester metal ions from aqueous solutions. In this study, the cadmium tolerant fungus, Aspergillus sp was isolated from sample of an e-waste recycling facility. The optimal parameters for removal of Cd such as metal concentration, pH, temperature and time were studied. In the controlled conditions it was demonstrated that the maximum of 88% cadmium (100 mgL-1) was removed from aqueous solution by Aspergillus sp. at an optimum pH 4 and temperature 30°C. The observations reveal that the biomass of isolated Aspergillus sp. has the potential to be used as biosorbent for heavy metal cadmium removal from contaminated wastewater.