title: Removal of nutrients and organic pollution load from pulp and paper mill effluent by microalgae in outdoor open pond.
abstract: A mixed culture of microalgae, containing two Scenedesmus species, was analysed to determine its potential in coupling of pulp and paper mill effluent treatment and microalgal cultivation. Laboratory studies suggested that 60% concentration of wastewater was optimum for microalgal cultivation. A maximum of 82% and 75% removal of BOD and COD respectively was achieved with microalgal cultivation in outdoor open pond. By the end of the cultivation period, 65% removal of NO3-N and 71.29% removal of PO4-P was observed. The fatty acid composition of mixed microalgal culture cultivated with effluent showed the palmitic acid, oleic acid, linoleic acid and α-linolenic acid as major fatty acids. The results obtained suggest that pulp and paper mill effluent could be used effectively for cultivation of microalgae to minimise the freshwater and nutrient requirements.
authors.affiliation: Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India.
authors.forename: M T
authors.initials: MT
authors.lastname: Usha
authors.affiliation: Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India.
authors.forename: T
authors.initials: T
authors.lastname: Sarat Chandra
authors.affiliation: Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India.
authors.forename: R
authors.initials: R
authors.lastname: Sarada
authors.affiliation: Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysuru 570020, Karnataka, India. Electronic address: vikas@cftri.res.in.
authors.forename: V S
authors.initials: VS
authors.lastname: Chauhan
mesh_terms: D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D005227:Fatty Acids / Q000032:analysis; D058086:Microalgae / Q000254:growth & development / Q000378:metabolism*; D009584:Nitrogen / Q000302:isolation & purification*; D010209:Paper; D010758:Phosphorus / Q000302:isolation & purification*; D061005:Ponds / Q000382:microbiology*; D044444:Scenedesmus / Q000254:growth & development / Q000378:metabolism; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000382:microbiology; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D005227:Fatty Acids; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: COD; Lipids; Nutrient removal; Pulp and paper mill effluent; Scenedesmus