Abstract—In this research, palm kernel powder (PKP) was
utilized as a bioadsorbent for the removal of Cr(VI) and Cu(II)
ions from aqueous solutions. Batch studies were preformed to
evaluate the effect of various experimental parameters on Cr(VI)
and Cu(II) adsorption onto PKP. The adsorption equilibrium
was reached after 70 min. The adsorption capacity of Cr(VI)
and Cu(II) was pH-dependent showing a maximum at
equilibrium pH 2 and 5, respectively. The percentage removal of
heavy metals by PKP varied in order unmodified
adsorbents>HNO3>H3PO4. The adsorption isotherm and
kinetics of Cr(VI) and Cu(II) were also investigated using
Langmuir and Freundlich adsorption isotherm models and
pseudo-first order (LSO) and pseudo-second-order (PSO)
kinetic models. The data was better described by Freundlich
adsorption isotherm model and PSO kinetics in the
concentration range studied. For environmental study, it was
found that the adsorption capacity for heavy metals decreased in
the raw waste water sample in comparison with the synthetic
waste water system.
Index Terms—Biosorption, chromium, copper, kinetics, palm kernel powder.
Ragwan Mohamed and Mohamed Erhayem are with Chemistry Department, University Sirte, Sirte, Libya (e-mail: firstname.lastname@example.org, email@example.com).
Alaa Mustafa is with the Department of Environmental Science, Alexandria University, Alexandria, Egypt.
Cite: Ragwan Mohamed, Alaa Mustafa, and Mohamed Erhayem, "Biosorption of Cr(VI) and Cu(II) by Palm Kernel Powder and Its Potential Application," International Journal of Environmental Science and Development vol. 7, no. 11, pp. 788-792, 2016.