Turbidity Removl using Silk Sericin and Silk Sericin Powder as Coagulant Aid

摘要

The main objective of this research is to synthesize silk sericin and silk sericin powder for turbidity removal of synthetic turbid water. Silk sericin used as coagulant aid in this study was extracted from silk cocoons by boiling them with 0.5% (w/w) Na_2CO_3 solution at 90°Cfor 60 min. Synthetic turbid water with the initial turbidity of about 50 NTU, 75 NTU, and 100 NTU, the turbidity removal efficiencies 89.2±5.41%, 90±3.48% and 87±4.31% respectively. For the powder silk sericin, the turbidity removal efficiencies 96±0.77%, 88±2%, and 96±1.73% respectively.