Biochemical analysis of nitrogen fixing organism azotobacter for removal of toxic hexavalent chromium from groundwater resources causing ill-effects on the health of human population

Mujtaba, SF and Singh, Ashish Kumar (2025) Biochemical analysis of nitrogen fixing organism azotobacter for removal of toxic hexavalent chromium from groundwater resources causing ill-effects on the health of human population. International Journal of Science and Research Archive, 15 (3). 070-082. ISSN 2582-8185

Hexavalent chromium Cr(VI) is a common environmental contaminant that poses serious threats to ecosystems and human health, especially in groundwater. Conventional remediation techniques are frequently expensive and ineffective. The potential of the nitrogen-fixing bacteria Azotobacter in the bioremediation of groundwater contaminated with Cr(VI) is investigated in this work. We assessed Azotobacter's ability to remove Cr(VI) using a range of growth studies and biochemical tests. The findings show that, depending on variables like pH, temperature, and starting chromium concentration, Azotobacter has considerable Cr(VI) reduction capabilities. According to the results, Azotobacter may be a practical and long-term solution for the bioremediation of water sources contaminated with chromium.