Lipids production and nutrients recycling by microalgae mixotrophic culture in anaerobic digestate of sludge using wasted organics as carbon source
Lipids production and nutrients recycling by microalgae mixotrophic culture in anaerobic digestate of sludge using wasted organics as carbon source
复制标题
利用废弃有机物作为碳源在污泥厌氧消化中微藻混合营养培养的脂质生产和营养物回收
DOI：
10.1016/j.biortech.2019.122379
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发表时间：
2020
影响因子：
11.4
通讯作者：
Zhao Xian-Chao
中科院分区：
文献类型：
--
作者：
Tan Xiao-Bo;Yang Li-Bin;Zhang Wen-Wen;Zhao Xian-Chao
污泥厌氧消化物中有机物不足限制了藻类混合营养培养并导致脂质产量低。在本研究中，通过添加酸化淀粉废水来增强蛋白核小球藻混合营养培养物的脂质产生和污染物去除。结果表明，在污泥厌氧消化液中最佳添加酸化淀粉废水（1:1，v/v）可将生物量和脂质产量分别提高0.5倍（至2.59g·L−1）和3.2倍（87.3mg·L−1·d−1）。酸化淀粉废水的添加还提高了饱和度更高的藻类生物柴油的质量（通常为 C16:0 和 C18:0）。此外，混合废水中62%的总有机碳、99%的铵和95%的正磷酸盐被微藻有效去除。这项研究为利用废碳源提高污泥厌氧消化物中的生物柴油生产和营养物回收提供了一种有前途的方法。
Insufficient organics in anaerobic digestate of sludge limited algal mixotrophic culture and caused low lipids production. In this study, enhancing lipids production and pollutants removal by adding acidified starch wastewater was tested forChlorella pyrenoidosamixotrophic culture. The results showed that an optimal addition of acidified starch wastewater into anaerobic digestate of sludge (1:1, v/v) improved biomass and lipids production by 0.5-fold (to 2.59 g·L−1) and 3.2-fold (87.3 mg·L−1·d−1), respectively. The acidified starch wastewater addition also improved the quality of algal biodiesel with higher saturation (typically in C16:0 and C18:0). In addition, 62% of total organic carbon, 99% of ammonium and 95% of orthophosphate in mixed wastewater were effectively removed by microalgae. This study provides a promising way to improve biodiesel production and nutrients recovery from anaerobic digestate of sludge using waste carbon source.