Isolation of microalgae with growth restriction and nutrient removal from alkaline wastewater

Ji Fang, Wang Yingkuan, Li Gang, Zhou Yuguang, Dong Renjie

Abstract


In order to isolate a well-tolerated microalgae strain and study its capability of wastewater treatment, a newly microalgae strain was isolated and identified from fresh water. The phylogenetic analysis indicates that this strain has a close relationship with Desmodesmus sp., named as EJ 9-2. The effects of temperature, pH value and NaCl concentration on growth of Desmondesmus sp. were investigated; the capability of nutrient removal from alkaline wastewater was also observed. Desmodesmus sp. EJ 9-2 had a wide pH adaptation range (3-12) and could remove nitrogen, phosphorus and COD which might substantially decrease the cost of biofuel production. The research can provide evidence for outdoor large-scale cultivation of microalgae.
Keywords: microalgae, isolation, growth restriction, alkaline wastewater, nutrient removal, algae-based fuel, wastewater treatment
DOI: 10.3965/j.ijabe.20150806.2164

Citation: Ji F, Wang Y K, Li G, Zhou Y G, Dong R J. Isolation of microalgae with growth restriction and nutrient removal from alkaline wastewater. Int J Agric & Biol Eng, 2015; 8(6): 62－68.

Keywords


microalgae, isolation, growth restriction, alkaline wastewater, nutrient removal, algae-based fuel, wastewater treatment

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