Mixed Wastewater Coupled with CO2 for Microalgae Culturing and Nutrient Removal

Biomass, nutrient removal capacity, lipid productivity and morphological changes of Chlorella sorokiniana and Desmodesmus communis were investigated in mixed wastewaters with different CO2 concentrations. Under optimal condition, which was 1:3 ratio of swine wastewater to second treated municipal wa...

Full description

Saved in:
Bibliographic Details
Published in:PloS one 2015-09, Vol.10 (9), p.e0139117-e0139117
Main Authors: Yao, Lili, Shi, Jianye, Miao, Xiaoling
Format: Article
Language:English
Subjects:
Aeration
Algae
Alternative energy sources
Ammonia
Animal wastes
Aquatic microorganisms
Biodegradation, Environmental
Biodiesel fuels
Biomass
Biomass energy
Biotechnology
Carbon dioxide
Carbon Dioxide - metabolism
Carbon dioxide concentration
Chlorella sorokiniana
Energy resources
Laboratories
Life sciences
Lipids
Lipids - analysis
Livestock
Metabolism
Microalgae
Microalgae - growth & development
Microalgae - metabolism
Morphology
Municipal wastewater
Nitrates
Nitrogen
Nitrogen - isolation & purification
Nutrient concentrations
Nutrient removal
Nutrients
Phosphorus
Phosphorus - isolation & purification
Phosphorus removal
Photosynthesis
Raw materials
Scenedesmus
Swine
Waste Water - chemistry
Wastewater
Wastewater treatment
Water Pollutants, Chemical - isolation & purification
Water Purification - methods
Water treatment
Waterborne diseases
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Biomass, nutrient removal capacity, lipid productivity and morphological changes of Chlorella sorokiniana and Desmodesmus communis were investigated in mixed wastewaters with different CO2 concentrations. Under optimal condition, which was 1:3 ratio of swine wastewater to second treated municipal wastewater with 5% CO2, the maximum biomass concentrations were 1.22 g L-1 and 0.84 g L-1 for C. sorokiniana and D. communis, respectively. Almost all of the ammonia and phosphorus were removed, the removal rates of total nitrogen were 88.05% for C. sorokiniana and 83.18% for D. communis. Lipid content reached 17.04% for C. sorokiniana and 20.37% for D. communis after 10 days culture. CO2 aeration increased intracellular particle numbers of both microalgae and made D. communis tend to be solitary. The research suggested the aeration of CO2 improve the tolerance of microalgae to high concentration of NH4-N, and nutrient excess stress could induce lipid accumulation of microalgae.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0139117