| Autor: |
Rasheed, Aamir, Jawad, Muhammad, Ghous, Tahseen, Kayani, Waqas Khan, Rasheed, Faiza, Akhter, Kulsoom |
| Zdroj: |
Biomass Conversion and Biorefinery; 20240101, Issue: Preprints p1-13, 13p |
| Abstrakt: |
Eggshells have the potential to offer low-cost sorbents for metal biosorptionin aqueous environments. A comparative study aiming at exploring the effect of source environment of Bacillus cereusagainst bioremediation of Cd(II) from an aqueous solution was investigated. Low-cost eggshells were selected and grinded into powder (eggshell powder ESP) to fabricate a solid support for biomass immobilization of heat-killed and alive B. cereussourced from contaminated and uncontaminated environments (NC 7401 and AVP 12 respectively). The surface characterization of the biosorbents was done through detailed FT-IR studies along with XRD and SEM–EDX techniques. Key parameters, including pH, sorbent dosage, adsorbate volume, shaking time, and interfering ions, were investigated to determine their optimum ranges using batch adsorption mode. The maximum removal efficiency of Cd(II) was found to be 92 ± 5% under the optimized conditions using a biosorbent composed of live B. cereusoriginally obtained from a contaminated environment (referred to as CAIBES). The maximum adsorption capacity as predicted by the Langmuir model was 137.97 ± 4.031 mg/g with 0.012 ± 0.0051 of KL. Three repeated adsorption–desorption cycles have proved the regeneration potential of bio-formulated biosorbent and the success of the designed biosorptionprocess. The findings of this study strongly support the application of the developed material as an eco-friendly biosorbent for the remediation of Cd(II) from polluted waters. |
| Databáze: |
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