Research Article | OPEN ACCESS
Use of Chlorella for the Treatment of the Soft-shelled Turtle Processing Wastewater
Yong-jun Zhang, Dong-yang Su, Gao-fan Zhang, Jia Li, Song-xue Hu, Sheng-hua Han, Ling-tao Zeng and Ting Chen
College of Life Sciences, China Jiliang University, P.R. China
Advance Journal of Food Science and Technology 2013 12:1573-1576
Received: July 12, 2013 | Accepted: July 25, 2013 | Published: December 05, 2013
Abstract
The capability of Chlorella vulgaris to remove nitrogen in the form of ammonium ions from the soft-shelled turtle processing wastewater in a local agricultural products limited company (in Hangzhou, China) was studied. The soft-shelled turtle processing wastewater was found to include high concentrations of nitrogen (107.63±4.84 mg/L) in the form of ammonium $(NH_4^+)$ with the small amounts of nitrite (0.32±0.04 mg/L on annual average) at pH 6.7 and to be suitable for growing Chlorella vulgaris. When Chlorella vulgaris was cultivated in a
batch mode, a majority of the nitrogen concentration was dramatically removed after a lag-phase period. The total biomass weight gained during the entire cultivation period balanced out well with the nitrogen removed from the culture medium. These results indicate that Chlorella vulgaris has potential to remove nitrogen (i.e., ammonium ion) and nitrite at a reasonable uptake rate from wastewater while being cultivated using the soft-shelled turtle processing wastewater.
Keywords:
Chlorella vulgaris, microalgae, nitrogen removal, soft-shelled turtle processing, wastewater,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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