Growing Chlorella sp. on meat processing wastewater for nutrient removal and biomass production

Qian Lu; Wenguang Zhou; Min Min; Xiaochen Ma; Ceria Chandra; Yen T T Doan; Yiwei Ma; Hongli Zheng; Sibo Cheng; Richard Griffith; Paul Chen; Chi Chen; Pedro E Urriola; Gerald C Shurson; Hans R Gislerød; Roger Ruan

doi:10.1016/j.biortech.2015.08.133

Growing Chlorella sp. on meat processing wastewater for nutrient removal and biomass production

Bioresour Technol. 2015 Dec:198:189-97. doi: 10.1016/j.biortech.2015.08.133. Epub 2015 Sep 2.

Authors

Qian Lu¹, Wenguang Zhou¹, Min Min¹, Xiaochen Ma¹, Ceria Chandra¹, Yen T T Doan², Yiwei Ma¹, Hongli Zheng³, Sibo Cheng¹, Richard Griffith¹, Paul Chen¹, Chi Chen⁴, Pedro E Urriola⁵, Gerald C Shurson⁵, Hans R Gislerød⁶, Roger Ruan⁷

Affiliations

¹ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA.
² Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; School of Environmental Science and Technology, Hanoi University of Science and Technology, Viet Nam.
³ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; MOE Biomass Energy Research Center and State Key Laboratory of Food Science, Nanchang University, Nanchang, Jiangxi, People's Republic of China.
⁴ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, USA.
⁵ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; Department of Animal Science, University of Minnesota, St. Paul, MN, USA.
⁶ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; Norwegian University of Life Sciences, Norway.
⁷ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, MN, USA; MOE Biomass Energy Research Center and State Key Laboratory of Food Science, Nanchang University, Nanchang, Jiangxi, People's Republic of China. Electronic address: ruanx001@umn.edu.

PMID: 26386422
DOI: 10.1016/j.biortech.2015.08.133

Abstract

In this work, Chlorella sp. (UM6151) was selected to treat meat processing wastewater for nutrient removal and biomass production. To balance the nutrient profile and improve biomass yield at low cost, an innovative algae cultivation model based on wastewater mixing was developed. The result showed that biomass yield (0.675-1.538 g/L) of algae grown on mixed wastewater was much higher than that on individual wastewater and artificial medium. Wastewater mixing eased the bottleneck for algae growth and contributed to the improved biomass yield. Furthermore, in mixed wastewater with sufficient nitrogen, ammonia nitrogen removal efficiencies (68.75-90.38%) and total nitrogen removal efficiencies (30.06-50.94%) were improved. Wastewater mixing also promoted the synthesis of protein in algal cells. Protein content of algae growing on mixed wastewater reached 60.87-68.65%, which is much higher than that of traditional protein source. Algae cultivation model based on wastewater mixing is an efficient and economical way to improve biomass yield.

Keywords: Algae cultivation; Biomass; Nutrient removal; Protein; Wastewater.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biomass
Chlorella / growth & development*
Chlorella / metabolism
Meat / microbiology*
Nitrogen / metabolism
Waste Disposal, Fluid / methods*
Wastewater / microbiology*

Substances

Waste Water
Nitrogen