Mycoremediation Potential of Aspergillus niger against Heavy Metals of Amanishah Nallah, Jaipur

Developing countries face pollution from industrial waters, which are not treated before release. Mycoremediation, a practical and economical solution, can be effective using filamentous fungal species like Aspergillus sp., secreting organic acids. The main objective of the study is to study concentration of heavy metal and to identify filamentous fungal species which have ability to detoxify the HMs. The location of the sampling area is: Amanishah ka Nalah in Sanganer City which was earlier known as Dravaywati river because vegetables were cultivated in the field of industrial and sewerage waste water. Grab sampling methodology adopted to take samples from the different locations of flow of nallah i.e. residential, non-residential and industrial area to analysed heavy metals. The atomic absorption spectroscopy (AAS) shows that waste water contains cadmium 1.0 to 1.20, copper 1.0 to 1.20 and nickel 0.94 to 1.21 milligrams/liter. Fungal sp. Were isolated from freshly collected soil on microbial culture media (PDA). Microbial identification was done by using PCR and sequencing to identified fungal sp. i.e. Aspergillus niger. It shows a decrease in the toxicity of mainly two heavy metals Ni and Cu whereas Cd is able to inhibit the growth of Aspergillus niger to some extent. The analysis underscores the significance of A. niger of heavy metals remediation, emphasizing requirement for further analysis and technical improvements to fully utilize their metabolites.