Production of biodiesel from microalgae Chlamydomonas polypyrenoideum grown on dairy industry wastewater

• Published in: Bioresource technology 2013-09, Vol.144, p.499-503
• Main Authors: Kothari, Richa, Prasad, Ravindra, Kumar, Virendra, Singh, D.P.
• Format: Article
• Language: English
• Subjects: Algae; Algal biomass; Applied sciences; Biodiesel; Biofuel production; Biofuels; Biological and medical sciences; Biomass; Biotechnology; Chlamydomonas - growth & development; Chlamydomonas - metabolism; Chlamydomonas polypyrenoideum; Dairy industry; Dairy industry wastewater; Dairying; Energy; Exact sciences and technology; Food industries; Fundamental and applied biological sciences. Psychology; Industrial applications and implications. Economical aspects; Industrial Waste; Lipids; Microalgae - growth & development; Microalgae - metabolism; Oils; Pollution; Pollution abatement; Spectroscopy, Fourier Transform Infrared; Strain; Use and upgrading of agricultural and food by-products. Biotechnology; Waste Water; Wastewaters; Water Pollutants - isolation & purification; Water Pollution - analysis; Water Quality; Water treatment and pollution
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2013.06.116

•Phyco-remediation for treatment of dairy wastewater and its potential for biofuel.•Chlamydomonas polypyrenoideum used for integrated approach.•Micro alga showed significant reduction in pollution load.•Special significance to nitrate removal.•Higher production of crude bio-oil was achieved in respect of control media used. This study involves a process of phyco-remediation of dairy industry wastewater by algal strain Chlamydomonas polypyrenoideum. The results of selected algal strain indicated that dairy industry wastewater was good nutrient supplement for algal growth in comparable with BG-11 growth medium. Alga grown on dairy industry wastewater reduced the pollution load of nitrate (90%), nitrite (74%), phosphate (70%), chloride (61%), fluoride (58%), and ammonia (90%) on 10th day of its growth as compared to that of uninoculated wastewater. The lipid content of algal biomass grown on dairy wastewater on 10th day (1.6g) and 15th day (1.2g) of batch experiment was found to be higher than the lipid content of algal biomass grown in BG-11 growth medium on 10th day (1.27g) and 15th day (1.0g) of batch experiment. The results on FTIR analysis of the extracted bio-oil through transesterification reaction was comparable with bio-oil obtained from other sources.