文档介绍：Polyhydroxyalkanoates Production by Activated Sludge: Effects of Activated Sludge
Organisms, PH and Initial Sludge Polyhydroxyalkanoates Content
YAMIN JIANG 1* XIAOMING HOU 1 Zhengzhou 450003, China; yaminjiang@; *
2 Corresponding Author.
YUANLONG ZHANG 2. Yellow River Henan Bureau, ; Zhengzhou
1. Yellow River Engineering Consulting Co., Ltd.; 450003, China.
Abstract-Polyhydroxyalkanoates have attracted much interest PHA content and different kinds of activated sludge
as an alternative to traditional plastics since they are anisms, phosphorus-anisms
biodegradable and patible. In this paper, activated (PAO), glycogen-anisms (GAO) and
sludge used for PHA production was selected and effects of pH aerobic activated anisms, on PHA production were
and initial Sludge PHA Content on PHA production were studied.
studied. It was found that the aerobic activated sludge
obtained the highest PHA content % under aerobic II. MATERIALS AND METHODS
conditions anic carbon feeding in three pulses, and the
produced PHA posed of 3HB, 3HV and 3H2MV at a A. Sludge Sources
ratio of around 76:23:1. Compared with pH 5 and 10, aerobic Seed sludge used for the enrichment of GAO and PAO
activated sludge exhibited higher and similar ability of PHA was from the secondary sedimentation tank of a municipal
production at the pH range from 7 to 9 and when pH was