生态环境学报Issue(4)：642-648,7.
混合培养对城市污水厂二级出水培养能源微藻的生长促进作用
Effects on the growth characteristic by mixed culture of three energy microalgae species using domestic secondary effluent
摘要
Abstract
Energy microalgae cultivation in wastewater system is very promising for the combination of water purification and energy production. The coupled technology is limited by low biomass productivity of microalgae in wastewater. Mixed culture of specific energy microalgae is a potential solution to address the problem. In order to find out the proper mixed microalgae strains, Scenedesmussp. LX1,Chlorella ellipsoidea YJ1 andHaematococcus pluvisliswere chosen to study the growth characteristic among different microalgal species combinations under secondary effluent of domestic wastewater. Comparisons of the growth characteristic and biomass productivity were conducted among different microalgal species combinations. The results indicated that different microalgal species combination ofScenedesmus sp. LX1,Chlorella ellipsoideaYJ1 and Haematococcus pluvialis can grow well, with biomass of every microalgae growing up to 100 mg·L-1 on day 10. Compared withScenedesmus sp. LX1 andChlorella ellipsoidea YJ1,Haematococcus pluvislis exhibited higher biomass growth potential. The intrinsic growth rate of the three microalgae in the mixed culture was higher than the mono-culture of them. The highest intrinsic growth rate ofScenedesmus sp. LX1 andHaematococcus pluvislis (1.36 d-1, 0.97 d-1, respectively) was obtained under the mixed culture of them.Scenedesmussp. LX1 andHaematococcus pluvislisin the mixed culture of them behaved higher specific growth rate (0.59 d-1, 0.42 d-1, respectively) than each mono-culture of them. Compared with the mono-culture of Scenedesmus sp. LX1,Chlorella ellipsoideaYJ1 and Haematococcus pluvialis, the biomass productivity was enhanced in the mixed cultures. The biomass productivity in the mixed culture ofScenedesmus sp. LX1 andHaematococcus pluvialis was increased by 64% and 42% than the monoculture ofScenedesmus sp. LX1 andHaematococcus pluvialis, respectively. The mixed culture ofScenedesmus sp. LX1 andHaematococcus pluvialis are potential strains used in energy microalgae cultivation in secondary effluent of domestic wastewater.关键词
栅藻/雨生红球藻/椭圆小球藻/生长特性/混合培养/城市二级出水Key words
Scenedesmussp./Chlorella ellipsoidea/Haematococcus pluvislis/growth characteristic/mixed culture/domestic secondary effluent分类
资源环境引用本文复制引用
朱树峰,于茵,胡洪营..混合培养对城市污水厂二级出水培养能源微藻的生长促进作用[J].生态环境学报,2014,(4):642-648,7.基金项目
国家自然科学基金重点项目 （）
