Enhancement of Lipid Production of Chlorella Pyrenoidosa Cultivated in Municipal Wastewater by Magnetic Treatment.
Despite the significant breakthroughs in research on microalgae as a feedstock for biodiesel, its production cost is still much higher than that of fossil diesel. One possible solution to overcome this problem is to optimize algal growth and lipid production in wastewater. The present study examines the feasibility of using magnetic treatment for enhancement of algal lipid production and wastewater treatment in outdoor-cultivated Chlorella pyrenoidosa. Results confirmed that magnetic treatment significantly enhances biomass and lipid productivity of C. pyrenoidosa by 12 and 10 %, respectively. Application of magnetic field in a semi-continuous culture resulted in highly treated wastewater with total nitrogen maintained under 15 mg L-1, ammonia nitrogen below 5 mg L-1, total phosphorus less than 0.5 mg L-1, and CODCrless than 50 mg L-1. In addition, magnetic treatment resulted in a decrease of wastewater turbidity, an increase of bacterial numbers, and an increase of active oxygen in wastewater which might be attributed to the enhancement of growth and lipid production of C. pyrenoidosa.
Harbin Institute of Technology Shenzhen Graduate School, 518055, Shenzhen, China.
Songfang
S
Han
Harbin Institute of Technology Shenzhen Graduate School, 518055, Shenzhen, China. jwb@hitsz.edu.cn.
Wenbiao
W
Jin
Harbin Institute of Technology Shenzhen Graduate School, 518055, Shenzhen, China.
Yangguang
Y
Chen
Harbin Institute of Technology Shenzhen Graduate School, 518055, Shenzhen, China.
Renjie
R
Tu
Harbin Institute of Technology Shenzhen Graduate School, 518055, Shenzhen, China.|Botany Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt.
Abd El-Fatah
AE
Abomohra
D064751:Ammonium Compounds / Q000032:analysis; D061249:Batch Cell Culture Techniques; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D002708:Chlorella / Q000254:growth & development* / Q000378:metabolism* / Q000528:radiation effects; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D002947:Cities; D015169:Colony Count, Microbial; D006863:Hydrogen-Ion Concentration; D008027:Light; D008055:Lipids / Q000096:biosynthesis*; D060526:Magnetic Fields; D008280:Magnetics / Q000379:methods*; D009391:Nephelometry and Turbidimetry; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D062065:Wastewater / Q000737:chemistry*
D064751:Ammonium Compounds; D002734:Chlorophyll; D000077194:Chlorophyll A; D008055:Lipids; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater
Biodiesel; Chlorella pyrenoidosa; Lipid enhancement; Magnetic treatment; Wastewater treatment