title: Effect of Tris-(hydroxymethyl)-amino methane on microalgae biomass growth in a photobioreactor.
abstract: One of the buffers namely Tris (Tris-(hydroxymethyl)-amino methane) was used to increase the growth of microalgae by stabilizing the pH value in microalgae cultures. The objective of this research is to determine the growth rate and biomass productivity of Chlorella sp. with and without Tris addition. Both conditions function at various N:P ratios cultured in photobioreactors (carbon dioxide of 5%(v/v), light intensity of 3.3 Klux). Daily variations in nutrient removal (nitrogen and phosphorus), cell concentration, DO, temperature and pH were measured for data analysis. The results show that the largest yield of biomass was achieved at the N:P ratio of 15:1 with and without Tris. After cultivation lasting 92 h, the algae concentration at this ratio was 1250 mg L(-1) and 3568 mg L(-1) with and without Tris, respectively. This indicates that adding Tris to the photobioreactor greatly reduces algae biomass due to bacterial competition.
authors.affiliation: Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Environment and Labor Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
authors.forename: Thanh Tin
authors.initials: TT
authors.lastname: Nguyen
authors.affiliation: Faculty of Environment and Natural Resources, University of Technology, Vietnam National University - Ho Chi Minh, District 10, Ho Chi Minh City, Viet Nam.
authors.forename: Xuan Thanh
authors.initials: XT
authors.lastname: Bui
authors.affiliation: Faculty of Environment and Natural Resources, University of Technology, Vietnam National University - Ho Chi Minh, District 10, Ho Chi Minh City, Viet Nam.
authors.forename: Minh Duyen
authors.initials: MD
authors.lastname: Pham
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
authors.forename: Wenshan
authors.initials: W
authors.lastname: Guo
authors.affiliation: Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia; Environmental Engineering and Management Research Group, Ton Duc Thang University, Ho Chi Minh City, Viet Nam. Electronic address: ngohuuhao121@gmail.com.
authors.forename: Huu Hao
authors.initials: HH
authors.lastname: Ngo
mesh_terms: D018533:Biomass; D002245:Carbon Dioxide / Q000378:metabolism; D002708:Chlorella / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D046508:Culture Techniques / Q000295:instrumentation / Q000379:methods; D006863:Hydrogen-Ion Concentration; D008027:Light; D008697:Methane; D058086:Microalgae / Q000187:drug effects / Q000254:growth & development*; D056265:Microbial Interactions; D009584:Nitrogen / Q000378:metabolism; D010247:Paramecium / Q000502:physiology; D010758:Phosphorus / Q000378:metabolism; D058433:Photobioreactors / Q000382:microbiology; D014325:Tromethamine / Q000494:pharmacology*
chemical_list: D014325:Tromethamine; D002245:Carbon Dioxide; D010758:Phosphorus; D009584:Nitrogen; D008697:Methane
keywords: Chlorella sp.; Microalgae; N:P ratio; Photobioreactor; Tris (Tris-(hydroxymethyl)-amino methane