International Journal of Analytical Chemistry

Research Article

Wastewater Treatment Using a Photoelectrochemical Oxidation Process for the Coffee Processing Industry Optimization of Chemical Oxygen Demand (COD) Removal Using Response Surface Methodology

Table 3

Optimum value of pollutant removed by photoelectrochemical oxidation.
Treatment designsMajor pollutantsCoffee wastewater before treatedCoffee wastewater after treatedRemovalefficiency (%)Permissible WHOstandard for effluents
ECO/NaClCOD (mg/L)7680384.38494.995250 mg/l
ECO/CaCl2COD (mg/L)7680277.47896.387250 mg/l
ECO/NaCl and UV/H2O2COD (mg/L)768092.46798.796250 mg/l
ECO/CaCl2 and UV/H2O2COD (mg/L)76808.29499.892250 mg/l