Abstract
To improve nutrients removal from wastewaters and enhance algal biomass production, piggery wastewater was mixed with brewery wastewaters. The results showed that it was a promising way to cultivate microalga in piggery and brewery wastewaters by balancing the carbon/nitrogen ratio. The optimal treatment condition for the mixed piggery-brewery wastewater using microalga was piggery wastewater mixed with brewery packaging wastewater by 1:5 at pH 7.0, resulting in carbon/nitrogen ratio of 7.9, with the biomass concentration of 2.85 g L−1, and the removal of 100% ammonia, 96% of total nitrogen, 90% of total phosphorus, and 93% of chemical oxygen demand. The application of the established strategies can enhance nutrient removal efficiency of the wastewaters while reducing microalgal biomass production costs.
Original language | English (US) |
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Pages (from-to) | 479-486 |
Number of pages | 8 |
Journal | Bioresource Technology |
Volume | 249 |
DOIs | |
State | Published - Feb 2018 |
Bibliographical note
Funding Information:This work was supported in part by grants from the Science and Technology Project of Jiangxi Provincial Department of Science and Technology (Grant Nos. 20142BBF60007 & 20071BBF60024 ), and National Natural Science Foundation of China (Grant No. 21767017 ), Innovation and Entrepreneurship Development Fund of ‘‘Thousand talents program” Talent (Grant No. 1001-02102082), and the Minnesota Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (LCCMR), and the University of Minnesota Center for Biorefining.
Publisher Copyright:
© 2017 Elsevier Ltd
Keywords
- Brewery wastewater
- Carbon/nitrogen ratio
- Microalga
- Piggery wastewater