Investigation of the Relationship between Bacteria Growth and Lipid Production Cultivating of Microalgae <i>Chlorella Vulgaris</i> in Seafood Wastewater
Thi Dong Phuong Nguyen,
Duc Huy Nguyen,
Jun Wei Lim,
Chih-Kai Chang,
Hui Yi Leong,
Thi Ngoc Thu Tran,
Thi Bich Hau Vu,
Thi Trung Chinh Nguyen,
Pau Loke Show
Affiliations
Thi Dong Phuong Nguyen
The University of Danang, University of Technology and Education, 48 Cao Thang St., Danang 550000, Vietnam
Duc Huy Nguyen
Institute of Biotechnology, Hue University, Hue 530000, Vietnam
Jun Wei Lim
Department of Fundamental and Applied Sciences, Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak Darul Ridzuan, Malaysia
Chih-Kai Chang
Department of Chemical Engineering and Materials Science, Yuan Ze University, No. 135, Yuan-Tung Road, Chungli, Taoyuan 320, Taiwan
Hui Yi Leong
Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga Semenyih, Selangor 43500, Malaysia
Thi Ngoc Thu Tran
The University of Danang, University of Technology and Education, 48 Cao Thang St., Danang 550000, Vietnam
Thi Bich Hau Vu
Danang Department of Science and Technology, 53 Nguyen Thi Minh Khai St., Danang 550000, Vietnam
Thi Trung Chinh Nguyen
The University of Danang, University of Technology and Education, 48 Cao Thang St., Danang 550000, Vietnam
Pau Loke Show
Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga Semenyih, Selangor 43500, Malaysia
Algae biorefinery is gaining much attention for the sustainable production of value-added products (e.g., biofuels, protein supplements etc.) globally. The current study aimed to investigate the relationship between lipid production and bacteria growth by an initial microalgae Chlorella vulgaris density culture in seafood wastewater effluent (SWE). According to our results, the initial C. vulgaris concentration in SWE influenced lipid accumulation. The concentration ranged from 25−35 mg·L−1 which corresponds to SWE’s chemical oxygen demand concentration of 365.67 ± 3.45 mg·L−1. A higher microalgae growth rate and lipid content of 32.15 ± 1.45% was successfully attained. A higher lipid content, approximately double, was observed when compared to the control (16.8 ± 0.5%). Moreover, this study demonstrates that bacteria inhibited microalgae growth as the initial cell density stepped over 35 mg·L−1, which also affected lipid accumulation. This study shows an optimal lipid accumulation attained at moderate Chlorella vulgaris density culture in SWE. Hence, wastewater treatment incorporating microalgae culture could be greatly developed in the future to achieve a greener environment.
