Jun L., Ahmad A., 2015, Natural, Biodegradable and Non-Toxic Coagulant from g. Hylocereus Foliage: Optimisation on Coagulant Preparation, Chemical Engineering Transactions, 45, 1477-1482.
This g. Hylocereus foliage has high potential to be an environmental friendly, natural based coagulant to substituting the conventional chemical metal formulated coagulant. In this study, we focused on the optimization of the condition for the preparation of coagulant through response surface methodology. A preliminary experiment was performed to screen-out insignificant parameters. The effect of drying temperature, extraction temperature and extraction duration towards the turbidity removal and viscosity of Hylocereus extract (g.H.E.) were studied. The model developed for turbidity removal and viscosity were the quadratic and linear model. Optimization done using numerical method found the optimum condition of drying temperature of 46.51 °C, extraction temperature of 100 °C and extraction duration of 20 min. At these condition, the turbidity removal and viscosity were 97.2174 % and 30.3411 mPa•s with desirability of 0.927.
