Adsorptive removal of Nickel(II) and Chromium(III) from aqueous solutions onto egg shell powder

Authors

DOI:

https://doi.org/10.14295/bjs.v5i3.815

Keywords:

metal oxide, adsorption process, environmental remediation, aqueous solution, low-cost biosorbent

Abstract

In the current research work, eggshell powder was utilized as an adsorbent for the adsorptive removal of Ni (II) and Cr (III) in a batch process. Eggshells were purchased from a local market in Peshawar, Pakistan. For the adsorption of the adsorbate Ni (II) and Cr (III) from the aqueous solution, the biosorbent, i.e., Egg Shell Powder, was utilized. Different parameters, such as pH, contact time, initial concentration, and adsorbent dose, were optimized. The value of qe and % removal was determined using the optimal conditions. The optimum pH for the adsorption of both Ni (II) and Cr (III) was found to be 4 and 9, respectively. The optimum contact times for Ni (II) and Cr (II) were 40 and 30 minutes. The optimum adsorbent dose for Ni (II) and Cr (III) was 0.2 & 0.1g. The (qe) was determined for Ni (II) and Cr (III) at 25 °C with the increase in concentration of adsorbate. The optimum initial concentration for Ni (II) and Cr (III) was found to be 20 ppm and 40 ppm, respectively.

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Published

2026-02-28

How to Cite

Shah, A., Khan, B., Khalid, A., Ali, N., Wazir, S., Aiman, U., Adnan, S., Yousaf, A., & Ahmad, M. (2026). Adsorptive removal of Nickel(II) and Chromium(III) from aqueous solutions onto egg shell powder. Brazilian Journal of Science, 5(3), 31–47. https://doi.org/10.14295/bjs.v5i3.815