title: Effects of dissolved inorganic carbon and nutrient levels on carbon fixation and properties of Thermosynechococcus sp. in a continuous system.
abstract: The concept of CO(2) chemo-absorption by sodium hydroxide in a wet scrubber followed by microalgae cultivation was used as a means to reduce the major greenhouse gas. A thermophilic and alkaline tolerable cyanobacterium named Thermosynechococcus CL-1 (TCL-1) was cultivated in continuous system, with a carbonate-bicarbonate buffer as carbon source. The effects of dissolved inorganic carbon (DIC(in)) and nutrient levels in influent on cell mass productivity, DIC removal efficiency, and alkaline solution regeneration by TCL-1 were investigated. The results show the highest cell mass productivity reaches 1.7 g L(-1)d(-1) under the highest DIC and nutrients level. Conversely, the best regeneration of alkaline solution proceeds from pH 9.5 to 11.3 under the lowest level. In addition, the highest ΔDIC (DIC consumption) and DIC removal efficiency are 42 mM and 43% at 113.2 and 57 mM DIC(in), respectively.
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, Tainan 701, Taiwan.
authors.forename: Chih Ming
authors.initials: CM
authors.lastname: Su
authors.forename: Hsin Ta
authors.initials: HT
authors.lastname: Hsueh
authors.forename: Hsing Hui
authors.initials: HH
authors.lastname: Chen
authors.forename: Hsin
authors.initials: H
authors.lastname: Chu
mesh_terms: D000042:Absorption; D002244:Carbon / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology*; D057486:Carbon Cycle / Q000187:drug effects*; D002455:Cell Division / Q000187:drug effects; D000458:Cyanobacteria / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology*; D012972:Sodium Hydroxide / Q000737:chemistry
chemical_list: D012972:Sodium Hydroxide; D002244:Carbon; D009584:Nitrogen