title: Cultivation of Chlorella pyrenoidosa in outdoor open raceway pond using domestic wastewater as medium in arid desert region.
abstract: Chlorella pyrenoidosa was cultivated in secondary wastewater effluent to assess its nutrient removal capabilities. Wastewaters were obtained from a wastewater treatment plant located in Ouargla, Algeria. The experiments were conducted in winter under natural sunlight in an outdoor open raceway pond situated in the desert area. The highest biomass of the microalgae was found to be 1.71±0.04g/L. Temperatures ranged between 18 and 31°C. The average annual insolation was no less than 3500h with an annual solar irradiance of more than 2000kWh/m(2). Analyses of different parameters including COD, NH4(+)-N and TP were conducted throughout the cultivation period. Their average removal efficiencies were 78%, 95% and 81% respectively. The results demonstrated the potential of nutrient removal by microalgae grown on secondary wastewater in arid areas.
authors.affiliation: Univ. Ouargla, Fac. des sciences appliquées, Lab. dynamique interaction et réactivités des systèmes, BP 511, Route de Ghardaïa, Ouargla 30000, Algeria.
authors.forename: Siham
authors.initials: S
authors.lastname: Dahmani
authors.affiliation: Univ. Ouargla, Fac. des sciences appliquées, Lab. dynamique interaction et réactivités des systèmes, BP 511, Route de Ghardaïa, Ouargla 30000, Algeria. Electronic address: Djamal.zerrouki@gmail.com.
authors.forename: Djamal
authors.initials: D
authors.lastname: Zerrouki
authors.affiliation: Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa.
authors.forename: Luveshan
authors.initials: L
authors.lastname: Ramanna
authors.affiliation: Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa.
authors.forename: Ismail
authors.initials: I
authors.lastname: Rawat
authors.affiliation: Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa.
authors.forename: Faizal
authors.initials: F
authors.lastname: Bux
mesh_terms: D000462:Algeria; D000641:Ammonia / Q000378:metabolism; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D002708:Chlorella / Q000254:growth & development* / Q000378:metabolism; D003889:Desert Climate; D058086:Microalgae / Q000254:growth & development* / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D061005:Ponds; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D000641:Ammonia; D009584:Nitrogen; D062065:Wastewater
keywords: Desert; High irradiance; Microalgae; Nutrient removal; Secondary treatment; Wastewater