自廢棄汙泥萃取聚 基烷基酸酯的方法(一)Method of Recovering Polyhydroxyalkanoates(PHAs) From Municipal Waste Sludge (1)

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

12/950,570

專利證號

US 8,641,908 B2

專利獲證名稱

自廢棄汙泥萃取聚 基烷基酸酯的方法(一)Method of Recovering Polyhydroxyalkanoates(PHAs) From Municipal Waste Sludge (1)

專利所屬機關 (申請機關)

國立暨南國際大學

獲證日期

2014/02/04

技術說明

本專利探討由生活污水實廠廢棄污泥萃取PHAs的方法，找出次氯酸鈉消化法最適條件為次氯酸鈉濃度20v/v%，污泥液固比0.67 mLmg-1，次氯酸鈉浸置時間30 min，在此條件下萃取所得PHAs 純度為72.5±1.75 wt%；次氯酸鈉-氯仿兩相萃取法最適條件為次氯酸鈉濃度30v/v%，污泥液固比2.00 mLmg-1，次氯酸鈉浸置時間45 min，萃取所得PHAs 純度為99.3±5.16 wt%；表面活性劑-次氯酸鈉萃取法最適條件為次氯酸鈉濃度40 v/v%，污泥液固比1.00 mLmg-1，次氯酸鈉浸置時間5 min，萃取所得PHAs 純度大於99.5 wt%。 The technology of extraction PHAs from wasted sewage sludge was developed in the study. The adequate extraction conditions for PHAs recovery digested by sodium hypochlorite were 20%(v/v) of hypochlorite concentration , 0.67 mLmg-1of liquid-solid ratio and 30 min of treatment time . Under these conditions, the purity of recovered PHAs was 72.5±1.75 wt%. The adequate extraction conditions for PHAs recovery digested by sodium hypochlorite solution and chloroform were 30%(v/v) of hypochlorite concentration, 2.00 mLmg-1of liquid-solid ratio and 45 min of treatment time . Under these conditions, the purity of recovered PHAs was 99.3±5.16 wt%. The adequate extraction conditions for PHAs recovery digested by sodium surfactant-hypochlorite were 40%(v/v) of hypochlorite concentration, 1.00 mLmg-1 of liquid-solid ratio and 5 min of treatment time. Under these conditions, the purity of recovered PHAs was higher than 99.5 wt%.

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