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首页> 外文期刊>Journal of water resource and protection >Impact on Wastewater Quality of Biopellets Composed of Chlorella vulgaris and Aspergillus niger and Lipid Content in the Harvested Biomass
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Impact on Wastewater Quality of Biopellets Composed of Chlorella vulgaris and Aspergillus niger and Lipid Content in the Harvested Biomass

机译：在收获生物质中对小球藻和曲霉组成的生物丸的废水质量的影响和脂质含量

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摘要

Filamentous fungi can be used to form easily harvested pellets with microalgae (fungal-assisted algal harvesting) in order to advance the sustainability and economic feasibility of wastewater treatment using microalgae. In experiments employing the microalga Chlorella vulgaris and using the filamentous fungus Aspergillus niger for harvesting, this study investigated the effect on water quality and the quantity and quality of lipids in the biomass produced. Major reductions in the concentrations of total nitrogen, ammonium-nitrogen and total phosphorus were observed after addition of the fungal spores (day 5) and during fungal growth and entrapment of the algal cells. At harvest (day 8), the decrease in total nitrogen was 47.4% ± 18.4% of the initial value, corresponding to a reduction of 41.9 ± 17.1 mg·nitrogen·L~(-1). For total phosphorus, the decrease was 94.4% + 3.2%, corresponding to a reduction of 6.4 ± 0.2 mg·phosphorus·L~(-1). A significant decrease in concentration of the micropollutant diclofenac was observed at harvest, to 5.1 ± 4.0 μg-L~(-1) compared with an initial concentration of 9.5 ± 0.6 μg·L~(-1). A significant decrease in total lipids in the biomass was observed after fungal-assisted algal harvesting, from 58.7 ± 2.7 μg-mg~(-1) at day 5 (algal biomass only) to 34.2 ± 2.7 μg-mg~(-1) at day 8 (fungal-algal biomass). However, because of high biomass production, the amount of lipids produced per litre of wastewater increased from 5.6 ± 0.9 mg on day 5 to 20.6 ± 4.9 mg on day 8.
机译：丝状真菌可用于形成具有微藻（真菌辅助藻类收获）的容易收获的颗粒，以推进使用微藻处理废水处理的可持续性和经济可行性。在采用微藻小球藻的实验中，使用丝状真菌曲霉尼日尔进行收获，本研究调查了生产生物质中脂质的水质和数量和质量的影响。在加入真菌孢子（第5天）和真菌生长和藻类细胞的捕获过程中，观察到总氮的浓度，铵 - 氮和总磷的主要减少。在收获（第8天）时，初始值的总氮的降低为47.4％±18.4％，相当于减少41.9±17.1mg·氮·l〜（-1）。对于总磷，降低为94.4％+ 3.2％，对应于减少6.4±0.2mg·磷·L〜（-1）。在收获的初始浓度为9.5±0.6μg·L〜（-1）的初始浓度比较至5.1±4.0μg-1〜（-1）时，观察到微核性二氯芬酸浓度的显着降低。在真菌辅助藻类收获后观察到生物质中总脂质的总脂质的显着降低，在第5天（藻类生物量）的58.7±2.7μg-mg〜（-1）至34.2±2.7μg-mg〜（-1）在第8天（真菌 - 藻类生物量）。然而，由于生物量高，每升废水产生的脂质量从第8天的5.6±0.9毫克增加到5.6±0.9毫克。

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