Abstract:
Despite the potential applicability of the combination between aluminium (anode) and
graphite or titanium (cathode) for poultry slaughterhouse wastewater treatment, their technical and
economic feasibilities have not been comprehensively captured. In this study, aluminium (anode) and
graphite and titanium as cathode electrode materials were investigated and compared in terms of their
performance on poultry slaughterhouse wastewater treatment. The wastewater samples collected
from the Izhevsk Production Corporative (PC) poultry farm in Kazakhstan were treated using a
lab-based electrochemical treatment plant and then analyzed after every 20 and 40 min of the treatment
processes. Cost analysis for both electrode combinations was also performed. From the analysis results,
the aluminium–graphite electrode combination achieved high removal efficiency from turbidity, color,
nitrite, phosphates, and chemical oxygen demand, with removal efficiency ranging from 72% to
98% after 20 min, as well as 88% to 100% after 40 min. A similar phenomenon was also observed
from the aluminium–titanium electrode combination, with high removal efficiency achieved from
turbidity, color, total suspended solids, nitrite, phosphates, and chemical oxygen demand, ranging
from 81% to 100% after 20 min as well as from 91% to 100% after 40 min. This means the treatment
performances for both aluminium–graphite and aluminium–titanium electrode combinations were
highly affected by the contact time. The general performance in terms of removal efficiency indicates
that the aluminium–titanium electrode combination outperformed the aluminium–graphite electrode
combination. However, the inert character of the graphite electrode led to a positive impact on the
total operating cost. Therefore, the aluminium–graphite electrode combination was observed to be
cheaper than the aluminium–titanium electrode combination in terms of the operating cost.
