Microalgal biomass generation by phycoremediation of dairy industry wastewater: An integrated approach towards sustainable biofuel production.
Dairy wastewater collected from local dairy industry was used as a growth media (without any pre-treatment) for the cultivation of microalgae Acutodesmus dimorphus. The level of COD reduced over 90% (from 2593.33±277.37 to 215±7.07mg/L) after 4days of cultivation; whereas, ammoniacal nitrogen was consumed completely (277.4±10.75mg/L) after 6days of cultivation. Dry biomass of 840 and 790mg/L was observed after 4 and 8days of cultivation, respectively, which is about 5-6 times more than that of BG-11 grown culture (149mg/L after 8days). This biomass contains around 25% lipid and 30% carbohydrate, which can be further converted into biodiesel and bioethanol, respectively. Theoretical calculations based on the recently reported conversion yield suggest that 1kg biomass of A. dimorphus might produce around 195g of biodiesel and 78g of bioethanol, which sums up to 273g of biofuels.
Division of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India; Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India.
Kaumeel
K
Chokshi
Division of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India.
Imran
I
Pancha
Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India; Division of Plant Omics, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India.
Arup
A
Ghosh
Division of Salt & Marine Chemicals, CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India; Academy of Scientific & Innovative Research (AcSIR), CSIR - Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India. Electronic address: smishra@csmcri.org.
Sandhya
S
Mishra
D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D000460:Chlorophyta; D003612:Dairying / Q000379:methods*; D008055:Lipids / Q000096:biosynthesis; D058086:Microalgae / Q000254:growth & development*; D062065:Wastewater / Q000737:chemistry / Q000382:microbiology*; D018508:Water Purification / Q000379:methods*
D056804:Biofuels; D008055:Lipids; D062065:Wastewater
Biofuel; Biomass; Dairy wastewater; Microalgae; Phycoremediation