Scholarlink

<p>The present study evaluates the efficacy of two bacterial isolates,&#xa0;<i>Serratia marcescens</i>&#xa0;SK1 and <i>Bacillus cereus</i>&#xa0;SK1, in remediating cadmium, lead, nickel and zinc contaminated foundry soil <i>S. marcescens</i>&#xa0;SK1 exhibited Minimum Inhibitory Concentrations (MIC) of 1300&#xa0;ppm for cadmium and zinc, 1100&#xa0;ppm for lead, and 1200&#xa0;ppm for nickel. In contrast,&#xa0;<i>B. cereus</i>&#xa0;SK1 showed the MIC of 1200&#xa0;ppm for cadmium, 1000&#xa0;ppm for nickel and 1100&#xa0;ppm for lead and zinc. <i>S. marcescens</i>&#xa0;SK1 was able to remove 91.67% of cadmium, 85% of lead, 85.5% of nickel and 94.83% of zinc under optimized conditions. Whereas, <i>B. cereus</i>&#xa0;SK1 was able to remove 89% of cadmium, 81.17% of lead, 83% of nickel, and 88% of zinc under optimized conditions. Overall,&#xa0;<i>S. marcescens</i>&#xa0;SK1 demonstrated superior biosorption efficiency over <i>B. cereus</i>&#xa0;SK1 across all tested metals. In situ bioremediation efficiencies of native and immobilized strains were compared, in order to bring out the effective removal of heavy metals from the contaminated foundry soil. The alginate immobilized <i>S. marcescens</i>&#xa0;SK1 exhibited better bioremediation of contaminated soil and removed 82.64% of cadmium, 86.09% of lead, 85.14% of nickel, and 86.97% of zinc. These findings suggest that alginate immobilized cells of <i>S. marcescens</i>&#xa0;SK1, hold significant potential for the rehabilitation and ecological restoration of metal-contaminated foundry soils.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Use of Serratia marcescens SK1 and Bacillus cereus SK1 as a natural biosorbent to remove cadmium, lead, nickel and zinc from foundry soil

  • 期刊论文

  • 发表日期：

    2026年6月2日

查看全文
  • Kasthuri Sivakumar,
  • Pratheeba Sintharaj,
  • Shanmuga Priya Ramasamy

摘要

The present study evaluates the efficacy of two bacterial isolates, Serratia marcescens SK1 and Bacillus cereus SK1, in remediating cadmium, lead, nickel and zinc contaminated foundry soil S. marcescens SK1 exhibited Minimum Inhibitory Concentrations (MIC) of 1300 ppm for cadmium and zinc, 1100 ppm for lead, and 1200 ppm for nickel. In contrast, B. cereus SK1 showed the MIC of 1200 ppm for cadmium, 1000 ppm for nickel and 1100 ppm for lead and zinc. S. marcescens SK1 was able to remove 91.67% of cadmium, 85% of lead, 85.5% of nickel and 94.83% of zinc under optimized conditions. Whereas, B. cereus SK1 was able to remove 89% of cadmium, 81.17% of lead, 83% of nickel, and 88% of zinc under optimized conditions. Overall, S. marcescens SK1 demonstrated superior biosorption efficiency over B. cereus SK1 across all tested metals. In situ bioremediation efficiencies of native and immobilized strains were compared, in order to bring out the effective removal of heavy metals from the contaminated foundry soil. The alginate immobilized S. marcescens SK1 exhibited better bioremediation of contaminated soil and removed 82.64% of cadmium, 86.09% of lead, 85.14% of nickel, and 86.97% of zinc. These findings suggest that alginate immobilized cells of S. marcescens SK1, hold significant potential for the rehabilitation and ecological restoration of metal-contaminated foundry soils.