Modifikasi Bioadsorben Rumput Laut (Eucheuma Cottonii)-Abu Sekam Padi Sebagai Bioadsorben Limbah Cair Industri Minuman Ringan

Adsorption of pollutants using biomass has been widely studied, two of which are rice husk ash and seaweed. The purpose of this study was to determine the effect using seaweed combined with rice husk ash as a bioadsorbent in reducing liquid waste industry. The purpose of this research to examines the combination of two biomasses in reducing the value of waste contamination and to determine the weight of the adsorbent and the optimum contact time on the ability of the bioadsorbent to adsorb liquid waste. The effectiveness of bioadsorbent was tested through several parameters pH, turbidity, Cd metal content, Total Suspended Solids (TSS) and Chemical Oxygen Demand (COD). The most effective optimum dose in reducing the liquid waste load of the beverage industry is 0.5 grams for 30 minutes in 150 mL of liquid waste and 1.5 grams for 30 minutes in Journal of Chemical Process Engineering e-ISSN Number 2655 2967 104 reducing Cd content which was tested using rice husk ash adsorbents. Then, the combination of seaweed and rice husk ash was varied 100, 75, 50, and 25(%). From this combination, 100% seaweed has the highest effectiveness in decreasing 27% pH level , 75.16% turbidity, 91.43% of TSS of and 97.77% of COD level.