Cofermenting Algal Biomass with Municipal Primary Solids to Enhance Carboxylate Production
Cofermenting Algal Biomass with Municipal Primary Solids to Enhance Carboxylate Production
复制标题
藻类生物质与市政初级固体共发酵以提高羧酸盐产量
DOI：
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发表时间：
2018
影响因子：
3.1
通讯作者：
Erik R. Coats
中科院分区：
文献类型：
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作者：
Taylor Romenesko;Erik R. Coats
随着水资源回收设施（WRRFs）采用生物营养物去除（BNR）工艺去除废水中多余的营养物，羧酸需求增加；资源回收过程（例如鸟粪石、聚羟基烷酸酯生产）也需要羧酸盐。在这方面，对藻类实现三级处理的兴趣创造了一种新的wrrf发酵底物。事实上，发酵潜力测试表明，藻类的增加可能是有益的；羧酸盐浓度比原始固体增加了31%。然而，出乎意料的是，在分批进料发酵罐中添加藻类降低了羧酸的产量（在5-7 d的srt中为26-34%），这与一个关键的研究假设相反；初步分析表明异养藻类消耗羧酸。与第二个研究假设相反，藻类生物量并没有显著地使羧酸盐物种多样化。最后，出乎意料的是，藻类发酵在5-7 d的srt下实现了显著的氨去除（39 - 96%）。虽然不希望羧酸产率下降，但减少氨负荷可能会降低WRRF的能量需求和羧酸需求，以实现反硝化。
As water resource recovery facilities (WRRFs) implement biological nutrient removal (BNR) processes to remove excess wastewater nutrients, carboxylic acid demands increase; resource recovery processes (e.g., struvite, polyhydroxyalkanoate production) also demand carboxylates. In this regard, interest in algae to achieve tertiary treatment creates a new intraWRRF fermentation substrate. Indeed, fermentation potential tests indicated that algal augmentation could prove beneficial; carboxylate concentrations increased 31 % over primary solids. However, unexpectedly, and disproving a key research hypothesis, algal augmentation in a fed‐batch fermenter decreased the production of carboxylic acids (26–34% at SRTs of 5–7 d); preliminary analyses suggest heterotrophic algae consumed carboxylates. Disproving a second research hypothesis, algal biomass did not significantly diversify carboxylate speciation. Finally, and unexpectedly, algal fermentation realized significant ammonia removal (39–96 % at SRTs of 5–7 d). Although decreased carboxylate yield is not desired, reduced ammonia load could potentially decrease WRRF energy demands and decrease carboxylic acid demands to achieve denitrification.
DOI：
10.1109/ncm.2008.225
发表时间：
2008-09
期刊：
2008 Fourth International Conference on Networked Computing and Advanced Information Management
影响因子：
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作者：
Woo Hyuk Jang;Youngmi Kwon
通讯作者：
Woo Hyuk Jang;Youngmi Kwon