title: Pretreated algal bloom as a substantial nutrient source for microalgae cultivation for biodiesel production.
abstract: In the present investigation, toxic algal bloom, a copious and low-cost nutrient source was deployed for cultivating Chlorella pyrenoidosa. Various pre-treatment methods using combinations of acid/alkali and autoclave/microwave were tested for preparing hydrolysates and compared with minimal media (BG-11). Acid autoclave treatment resulted in maximum carbon, nitrogen and phosphorous content which substantially boosted the growth of the microalgal cells (4.36g/L) as compared to rest of the media. The microalga grown in this media also showed enhanced lipid content (43.2%) and lipid productivity (188mg/L/d) as compared to BG-11 (19.42mg/L/d). The biochemical composition showed 1.6-fold declines in protein while 1.27 folds in carbohydrate content as compared to BG-11. The fatty acid profile revealed the presence of C14-C22 with increased amount of monounsaturated fatty acids as compared to BG-11. The results obtained showed that algal bloom can be used as a potential nutrient source for microalgae.
authors.affiliation: Department of Chemical Engineering, Indian Institute of Technology, Roorkee 247667, Uttarakhand, India. Electronic address: pjain.pch2015@iitr.ac.in.
authors.forename: Priyanka
authors.initials: P
authors.lastname: Jain
authors.affiliation: Department of Biotechnology, Indian Institute of Technology, Roorkee 247667, Uttarakhand, India.
authors.forename: Neha
authors.initials: N
authors.lastname: Arora
authors.affiliation: Department of Biotechnology, Indian Institute of Technology, Roorkee 247667, Uttarakhand, India.
authors.forename: Juhi
authors.initials: J
authors.lastname: Mehtani
authors.affiliation: Department of Biotechnology, Indian Institute of Technology, Roorkee 247667, Uttarakhand, India.
authors.forename: Vikas
authors.initials: V
authors.lastname: Pruthi
authors.affiliation: Department of Chemical Engineering, Indian Institute of Technology, Roorkee 247667, Uttarakhand, India.
authors.forename: C B
authors.initials: CB
authors.lastname: Majumder
mesh_terms: D056804:Biofuels; D018533:Biomass; D002708:Chlorella; D005068:Eutrophication; D058086:Microalgae
chemical_list: D056804:Biofuels
keywords: Algal bloom; Biodiesel; Chlorella pyrenoidosa; Fatty acids; Lipid content