Microbial Treated Waste Foundry Sand and its Metal Leachate Analysis

Abstract As the quantity of Waste Foundry Sand (WFS) is generated in huge amount, only a part of WFS is considered as the hazardous waste and the rest of the part is considered as non-hazardous industrial waste foundry sand. The leachate from WFS may contain hazardous compounds, which may probably effect the environment. The random release of heavy metals into the soil and waters is a major health alarm worldwide, as they cannot be broken down to non-toxic forms and therefore have long-lasting effects on the ecosystem. Leaching characteristics are essential in understanding the environmental impact or toxicity, dumping and potential development of beneficial applications of WFS. This study investigates that a trial was done to find out a fungal species from dumped site of a local foundry located at Coimbatore (Tamilnadu, India). Isolation of different fungal species from soil sample was carried out. All the isolated fungal species were then screened for their organic acid production by using HPLC. The molecular characterization of 18S rRNA for the isolated fungus was matched with R. oryzae. Physiochemical Characterization of WFS was done. Assessment of impacts of using fungal treated WFS its leachate quality was done using atomic absorption spectroscopy.

Keywords Waste Foundry Sand, Isolation, organic acid, molecular characterization, leachate.

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Microbial Treated Waste Foundry Sand and its Metal Leachate Analysis

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