The effect of different operational strategies on polyhydroxyalkanoates (PHAs) production at short-term biomass enrichment

被引：17

作者：

Ahmadi, Farinaz ^{[1
]}

Zinatizadeh, Ali Akbar ^{[1
,2
]}

Asadi, Azar ^{[3
]}

机构：

[1] Razi Univ, Fac Chem, Environm Res Ctr ERC, Dept Appl Chem, Kermanshah, Iran

[2] Univ South Africa, Dept Environm Sci, Pretoria, South Africa

[3] Univ Yasuj, Dept Gas & Petr, Gachsaran 7591874831, Iran

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2020年 / 8卷 / 03期

基金：

美国国家科学基金会;

关键词：

Polyhydroxyalkanoate (PHA); culture selection strategy; short-term enrichment (STE); acetate; soft drink wastewater; GLYCOGEN ACCUMULATING ORGANISMS; MIXED MICROBIAL CULTURES; MUNICIPAL WASTE-WATER; SLUDGE RETENTION TIME; ACTIVATED-SLUDGE; NITROGEN LIMITATION; CARBON; REGIME; FEAST;

D O I：

10.1016/j.jece.2019.103531

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, polyhydroxyalkanoates (PHA) production under different short- time biomass enrichment strategies were investigated. Three strategies were applied in a sequencing batch reactor (SBR) including complete aerobic condition under the feast-famine regime, uncoupled carbon and nitrogen feeding regime and alternating anaerobic-aerobic conditions. Also, the effect of two different carbon sources comprising acetate and soft drink wastewaters on PHA production over the accumulation stage was evaluated. From the results, uncoupled carbon and nitrogen feeding regime showed a better performance to accumulate PHA rather than the other strategies. Besides, the accumulated PHA with acetate as a carbon source was significantly higher than soft drink wastewater. PHA production was obtained to be 79% and 25% mg-PHA/mg-TSS under uncoupled carbon and nitrogen feeding regime fed by acetate and soft drink wastewater, respectively. However, PHA production was less than 50% and 20% for other strategies with acetate and soft drink wastewater, respectively.

引用

页数：10

共 34 条

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