期刊
PROCESSES
卷 9, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/pr9020203
关键词
Scenedesmus; waste treatment; biotechnology; photosynthesis; respirometry; biomass
资金
- SABANA project of the European Union's Horizon 2020 Research and Innovation Programme [727874]
- PURASOL project - Spanish Ministry of Economy and Competitiveness [CTQ2017-84006-C3-3-R]
- Spanish Ministry of Education [FPU16/05996]
- Spanish Ministry of Science, Innovation, and Universities [IJC2018-035287-I]
- IFAPA
- BBVA Foundation
The study demonstrates the potential of microalgae in removing nutrients from pig farm wastewater, reducing environmental impact and health risks. Microalgae assimilated part of the N-NH4+ present in the media to produce biomass without converting it into N-NO3- as in traditional processes.
Animal production inevitably causes the emission of greenhouse gases and the generation of large amounts of slurry, both representing a serious environmental problem. Photosynthetic microorganisms such as microalgae and cyanobacteria have been proposed as alternative strategies to bioremediate agricultural waste while consuming carbon dioxide and producing valuable biomass. The current study assessed the potential of the microalga Scenedesmus sp. to remove nutrients from piggery wastewater (PWW) and the influence of the microalga on the microbial consortia. Maximum N-NH4+ consumption was 55.3 +/- 3.7 mg.L-1.day(-1) while P-PO43- removal rates were in the range 0.1-1.9 mg.L-1.day(-1). N-NH4+ removal was partially caused by the action of nitrifying bacteria, which led to the production of N-NO3-. N-NO3- production values where lower when microalgae were more active. This work demonstrated that the photosynthetic activity of microalgae allows us to increase nutrient removal rates from PWW and to reduce the coliform bacterial load of the effluent, minimising both their environmental impact and health risks. Microalgae assimilated part of the N-NH4+ present in the media to produce biomass and did not to convert it into N-NO3- as in traditional processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据