Browsing by Author "SABA YASIN"

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    Isolation and growth optimization of heavy metal resistant bacteria for bioremediation of hexavalent chromium
    (UMT Lahore, 2024-08-29) SABA YASIN; HAIQA FAROOQ; PARI BASHIR; LAIBA AMIR
    This study aimed to isolate the chromium-resistant bacteria from industrial wastewater. With an increase in industries and the discharge of effluent directly without any treatment increasing pollution and contaminants day by day. Chromium contamination not only affecting our environment but also human health. Environmental pollution has a considerable negative impact on health outcomes, as proven by the fact that it is responsible for an estimated 90% of fatalities in low-income nations. In low-income countries, air and water pollution are the most prevalent. This is in contrast to the fast rising economies, where the damaging effects of chemicals and pesticides comprise the principal types of environmental contamination. So, in this study Six isolates that were chromium resistant were isolated and screened through different biochemical tests. RC3, RC5, and RC7 isolated strains showed the ability to reduce the chromium in a shorter period. MIC (minimal inhibitory concentration) further highlighted the isolates tolerance level because selected isolates showed different growth at different chromium concentrations (3mM, 5mM, 6mM, 7mM, 20mM, 22mM, and 24mM). In chromium reduction assay, selected isolates grew with 0.25mM working concentration of Cr (VI). As a result, from the six isolated bacterial isolates RC3, RC5 and RC7 showed greater reduction ability. All these results showed that these selected isolates can be used for the bioremediation of chromium.