Abstract:
Chrysophyllum albidium seed shell, an abundant, biodegradable and inexpensive natural resource was used as a
precursor to bioadsorbent production for the removal of suspended and dissolved particles (SDP) from initially
coagulated Brewery Effluent (BRE). Influence of key parameters such as contact time, bioadsorbent dose, pH and
temperature were investigated using batch mode. The thermal behavior studies were evaluated using
Thermogravimetric and Differential scanning calorimetric analyses. The morphological observations and functional
groups of the bioadsorbents were determined using scanning electron microscopy and Fourier transform infrared
spectroscopy, respectively. The adsorption equilibrium, thermodynamics and kinetic of SDP adsorption on H3PO4-
treated shell and NH4Cl-treated shell were examined at specified temperatures. Equilibrium data sufficiently fitted
the Langmuir isotherm model (R2 > 0.99; SSE < 0.09). The pseudo-second order kinetic model provided the best
correlation (R2 > 0.99; SSE < 0.14) with the experimental data. The values of ΔG° and ΔH° indicated the spontaneous
and endothermic nature of the process. This study demonstrated that C. albidium seed shell could be utilized as
low cost, renewable, ecofriendly bioadsorbent for the uptake of SDP from BRE.
