Experimental study for growth potential of unicellular alga Chlorella pyrenoidosa on dairy waste water: An integrated approach for treatment and biofuel production

► Chlorella pyrenoidosa, an algal strain has good potential for bioremediation. ► C. pyrenoidosa showed about 80–85% phosphorus and 60–80% of nitrogen removal from the wastewater. ► Influent was found more suitable substrate for biodiesel production in comparison to effluent. This communication pres...

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Bibliographic Details
Published in:Bioresource technology 2012-07, Vol.116, p.466-470
Main Authors: Kothari, Richa, Pathak, Vinayak V., Kumar, Virendra, Singh, D.P.
Format: Article
Language:English
Subjects:
Biofuel production
Biofuels - analysis
Biomass
Chlorella
Chlorella - cytology
Chlorella - growth & development
Chlorella pyrenoidosa
Color
Dairying
Eutrophication and dairy wastewater
Extraction
Fuels
Hydrogen-Ion Concentration
Nephelometry and Turbidimetry
Nitrates
Phosphates
Strain
Treatment
Waste Disposal, Fluid
Waste water
Wastewater treatment
Water Pollutants, Chemical - isolation & purification
Water Purification - methods
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Summary:► Chlorella pyrenoidosa, an algal strain has good potential for bioremediation. ► C. pyrenoidosa showed about 80–85% phosphorus and 60–80% of nitrogen removal from the wastewater. ► Influent was found more suitable substrate for biodiesel production in comparison to effluent. This communication presents an integrated approach to study the potential of Chlorella pyrenoidosa for treatment of dairy wastewater (DWW) and biofuel extraction. The experiment was set up in two steps. The step-1 of the experiment was designed for treatment of dairy wastewater. The physical and chemical parameters of wastewater quality such as nitrate, phosphate, chloride, fluoride, hardness, etc., were studied. The level of nitrate and phosphate known, agents of eutrophication in water bodies was reduced by 60% and 87% in influent, 49% and 83% in the effluent, respectively. The step-2 of the experiment was designed for biofuel extraction by harvesting the biomass (algal strain) grown in dairy waste water. The result of this study shows that algal strain C. pyrenoidosa is not only an agent for mitigation of pollutant load, but it can also be used as potential agent for biofuel production.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2012.03.121