Cultivation of Chlorella vulgaris in manure-free piggery wastewater with high-strength ammonium for nutrients removal and biomass production: Effect of ammonium concentration, carbon/nitrogen ratio and pH
Cultivation of Chlorella vulgaris in manure-free piggery wastewater with high-strength ammonium for nutrients removal and biomass production: Effect of ammonium concentration, carbon/nitrogen ratio and pH
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用高浓度铵在无粪肥养猪废水中培养普通小球藻以去除营养物和生产生物质：铵浓度、碳/氮比和 pH 值的影响
DOI：
10.1016/j.biortech.2018.11.019
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发表时间：
2019
影响因子：
11.4
通讯作者：
Ruan Roger
中科院分区：
文献类型：
--
作者：
Zheng Hongli;Wu Xiaodan;Zou Guyue;Zhou Ting;Liu Yuhuan;Ruan Roger
当使用无粪肥养猪废水（MFPW）等高浓度铵废水作为微藻生长培养基时，氨毒性是微藻生长的主要缺点。在本研究中，研究了铵浓度、碳/氮比和pH值对MFPW中培养的小球藻的氨毒性和营养物去除的影响。三个重要参数影响C的氨毒性。寻常植物和营养物质对 MFPW 的去除显着。通过空气吹提可以降低MFPW 的铵浓度。微藻在碳氮比为25:1时生长最佳，生物量最大浓度为3.83gL−1，细胞活力最高为97%，氨氮去除率100%，总磷去除率95%，化学需氧量去除率99%。通过控制 pH 值可减轻氨毒性。应用已建立的策略可以增强 MFPW 的营养物去除，同时减轻 C 的氨毒性。寻常的。
Ammonia toxicity is a major disadvantage of microalgal growth when high-strength ammonium wastewaters like manure-free piggery wastewater (MFPW) were used as microalgal growth medium. In the present study, the effect of ammonium concentration, carbon/nitrogen ratio, and pH on ammonia toxicity ofChlorella vulgariscultivated in the MFPW and nutrients removal was investigated. The three important parameters affected ammonia toxicity ofC. vulgarisand nutrients removal of the MFPW significantly. The ammonium concentration of the MFPW could be decreased by air stripping. Microalga grew best at a carbon/nitrogen ratio of 25:1 with the maximum biomass concentration of 3.83 g L−1, the highest cell viability of 97%, and the removal of 100% ammonia, 95% of total phosphorus, and 99% of chemical oxygen demand. Ammonia toxicity was alleviated by pH control. The application of the established strategies can enhance nutrients removal of the MFPW while mitigating ammonia toxicity ofC. vulgaris.