Recycled wastewater from anaerobic digestion of lipid extracted algae as a source of nutrients
Abstract
Nutrient supply, especially nitrogen and phosphorus, is one of the main obstacles limiting industrialization of algal biofuel. To help enhance nutrient utilization efficiency, our research focused on recycling of nutrients from lipid extracted algae biomass by the method of anaerobic digestion. Two methods of lipid extraction were performed, nutrients were released during anaerobic digestion of the lipid extracted biomass, the recycled nutrients were collected for algae cultivation, and the cycle was repeated: cultivation-extraction-digestion-cultivation. The findings reflect that anaerobic digestion released nitrogen and phosphorus, and released methane as a by-product. The algae grew well on the recycled nutrients. Ammonia is the limiting macro element, and extra trace elements enhanced algae production as well. Ash free dry weight, lipid content and lipid components were monitored and did not vary when the cycle was repeated. This system for recycling nutrients with supplementary nutrients holds potential for producing biofuel from algae.
- Authors:
-
- Univ. of Arizona, Tucson, AZ (United States)
- Publication Date:
- Research Org.:
- Univ. of Arizona, Tucson, AZ (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office
- OSTI Identifier:
- 1580752
- Alternate Identifier(s):
- OSTI ID: 1495547
- Grant/Contract Number:
- EE0006269
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fuel
- Additional Journal Information:
- Journal Volume: 210; Journal Issue: C; Journal ID: ISSN 0016-2361
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; Algal biofuel; Lipid extraction; Anaerobic digestion; Nutrients recycle
Citation Formats
Ogden, Kimberly, and Zhang, Bingcong. Recycled wastewater from anaerobic digestion of lipid extracted algae as a source of nutrients. United States: N. p., 2017.
Web. doi:10.1016/j.fuel.2017.09.026.
Ogden, Kimberly, & Zhang, Bingcong. Recycled wastewater from anaerobic digestion of lipid extracted algae as a source of nutrients. United States. https://doi.org/10.1016/j.fuel.2017.09.026
Ogden, Kimberly, and Zhang, Bingcong. Sat .
"Recycled wastewater from anaerobic digestion of lipid extracted algae as a source of nutrients". United States. https://doi.org/10.1016/j.fuel.2017.09.026. https://www.osti.gov/servlets/purl/1580752.
@article{osti_1580752,
title = {Recycled wastewater from anaerobic digestion of lipid extracted algae as a source of nutrients},
author = {Ogden, Kimberly and Zhang, Bingcong},
abstractNote = {Nutrient supply, especially nitrogen and phosphorus, is one of the main obstacles limiting industrialization of algal biofuel. To help enhance nutrient utilization efficiency, our research focused on recycling of nutrients from lipid extracted algae biomass by the method of anaerobic digestion. Two methods of lipid extraction were performed, nutrients were released during anaerobic digestion of the lipid extracted biomass, the recycled nutrients were collected for algae cultivation, and the cycle was repeated: cultivation-extraction-digestion-cultivation. The findings reflect that anaerobic digestion released nitrogen and phosphorus, and released methane as a by-product. The algae grew well on the recycled nutrients. Ammonia is the limiting macro element, and extra trace elements enhanced algae production as well. Ash free dry weight, lipid content and lipid components were monitored and did not vary when the cycle was repeated. This system for recycling nutrients with supplementary nutrients holds potential for producing biofuel from algae.},
doi = {10.1016/j.fuel.2017.09.026},
journal = {Fuel},
number = C,
volume = 210,
place = {United States},
year = {Sat Sep 23 00:00:00 EDT 2017},
month = {Sat Sep 23 00:00:00 EDT 2017}
}
Web of Science