Open AccessEvaluation of different carbonate sources for bicarbonate-based integrated carbon capture and algae production system using Spirulina platensis
Author(s) -
Christelle Paula Cortez Batac,
Nadeine San Juan Gathercole,
Ana Katrina Fajardo Maravilla,
Arnel B. Beltran
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/778/1/012041
Subject(s) - spirulina (dietary supplement) , bicarbonate , potassium carbonate , carbonate , sodium bicarbonate , potassium , chemistry , carbon fibers , biomass (ecology) , carbon dioxide , total inorganic carbon , sodium carbonate , sodium , productivity , environmental chemistry , materials science , agronomy , organic chemistry , raw material , biology , macroeconomics , composite number , economics , composite material
Spirulina Platensis was evaluated in Bicarbonate-based Integrated Carbon Capture and Algae Production System (BICCAPS) using Modified Zarrouk’s media under three different carbonate solutions, namely, sodium, potassium and an equimolar mixture of sodium-potassium carbonate, as well as a control experiment consisting of only water. All systems mentioned were exposed to carbon dioxide loading in order to produce bicarbonate solutions to be used for cultivation of Spirulina Platensis under BICCAPS. Parameters such as pH, biomass productivity, and carbon conversion were analyzed to evaluate the effectivity of BICCAPS as a carbon sequestration technique given the conditions applied in the study. Results determined that the control system produced the highest biomass productivity of 10.42 mg L −1 day −1 despite having the lowest carbon conversion of 0.292 mM due to the limited amount of bicarbonates initially present. The sodium-potassium carbonate system then follows the control experiment, having a productivity of 7.37 mg L −1 day −1 and carbon conversion of 4.192 mM. Sodium carbonate system ranks third with productivity and carbon conversion of 6.56 mg L −1 day −1 and 2.682 mM. Lastly, potassium carbonate system was determined to have the lowest productivity of 4.48 mg −1 day −1 as well as a relatively low carbon conversion of 0.996 mM.