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The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations

The performance of a self-flocculating microalga Chlorococcum sp. GD on the flocculation, growth, and lipid accumulation in wastewater with different ammonia nitrogen concentrations was investigated. It was revealed that relative high ammonia nitrogen concentration (20–50 mg·L(−1)) was beneficial to...

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Autores principales: Lv, Junping, Wang, Xuechun, Liu, Wei, Feng, Jia, Liu, Qi, Nan, Fangru, Jiao, Xiaoyan, Xie, Shulian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5876979/
https://www.ncbi.nlm.nih.gov/pubmed/29498694
http://dx.doi.org/10.3390/ijerph15030434
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author Lv, Junping
Wang, Xuechun
Liu, Wei
Feng, Jia
Liu, Qi
Nan, Fangru
Jiao, Xiaoyan
Xie, Shulian
author_facet Lv, Junping
Wang, Xuechun
Liu, Wei
Feng, Jia
Liu, Qi
Nan, Fangru
Jiao, Xiaoyan
Xie, Shulian
author_sort Lv, Junping
collection PubMed
description The performance of a self-flocculating microalga Chlorococcum sp. GD on the flocculation, growth, and lipid accumulation in wastewater with different ammonia nitrogen concentrations was investigated. It was revealed that relative high ammonia nitrogen concentration (20–50 mg·L(−1)) was beneficial to the flocculation of Chlorococcum sp. GD, and the highest flocculating efficiency was up to 84.4%. It was also found that the highest flocculating efficiency occurred in the middle of the culture (4–5 days) regardless of initial ammonia concentration in wastewater. It was speculated that high flocculating efficiency was likely related to the production of extracellular proteins. 20 mg·L(−1) of ammonia was found to be a preferred concentration for both biomass production and lipid accumulation. 92.8% COD, 98.8% ammonia, and 69.4% phosphorus were removed when Chlorococcum sp. GD was cultivated in wastewater with 20 mg·L(−1) ammonia. The novelty and significance of the investigation was the integration of flocculation, biomass production, wastewater treatment, and lipid accumulation, simultaneously, which made Chlorococcum sp. GD a potential candidate for wastewater treatment and biodiesel production if harvested in wastewater with suitable ammonia nitrogen concentration.
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spelling pubmed-58769792018-04-09 The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations Lv, Junping Wang, Xuechun Liu, Wei Feng, Jia Liu, Qi Nan, Fangru Jiao, Xiaoyan Xie, Shulian Int J Environ Res Public Health Article The performance of a self-flocculating microalga Chlorococcum sp. GD on the flocculation, growth, and lipid accumulation in wastewater with different ammonia nitrogen concentrations was investigated. It was revealed that relative high ammonia nitrogen concentration (20–50 mg·L(−1)) was beneficial to the flocculation of Chlorococcum sp. GD, and the highest flocculating efficiency was up to 84.4%. It was also found that the highest flocculating efficiency occurred in the middle of the culture (4–5 days) regardless of initial ammonia concentration in wastewater. It was speculated that high flocculating efficiency was likely related to the production of extracellular proteins. 20 mg·L(−1) of ammonia was found to be a preferred concentration for both biomass production and lipid accumulation. 92.8% COD, 98.8% ammonia, and 69.4% phosphorus were removed when Chlorococcum sp. GD was cultivated in wastewater with 20 mg·L(−1) ammonia. The novelty and significance of the investigation was the integration of flocculation, biomass production, wastewater treatment, and lipid accumulation, simultaneously, which made Chlorococcum sp. GD a potential candidate for wastewater treatment and biodiesel production if harvested in wastewater with suitable ammonia nitrogen concentration. MDPI 2018-03-02 2018-03 /pmc/articles/PMC5876979/ /pubmed/29498694 http://dx.doi.org/10.3390/ijerph15030434 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lv, Junping
Wang, Xuechun
Liu, Wei
Feng, Jia
Liu, Qi
Nan, Fangru
Jiao, Xiaoyan
Xie, Shulian
The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations
title The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations
title_full The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations
title_fullStr The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations
title_full_unstemmed The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations
title_short The Performance of a Self-Flocculating Microalga Chlorococcum sp. GD in Wastewater with Different Ammonia Concentrations
title_sort performance of a self-flocculating microalga chlorococcum sp. gd in wastewater with different ammonia concentrations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5876979/
https://www.ncbi.nlm.nih.gov/pubmed/29498694
http://dx.doi.org/10.3390/ijerph15030434
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