A generic stoichiometric equation for microalgae–microorganism nexus by using clarified domestic wastewater as growth medium

Stoichiometric equations for microalgae–microorganism nexus culture were established by using 18 sets of experimental data from the literature where clarified domestic wastewater (CDWW) was used as a growth media. The best correlations between observed and calculated coefficients in the equations we...

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Bibliographic Details
Published in:Desalination and water treatment 2013-10, Vol.51 (34-36), p.6632-6640
Main Authors: Myint, Maung Thein, Ghassemi, Abbas, Nirmalakhandan, Nagamany
Format: Article
Language:English
Subjects:
Applied sciences
Balancing
Biological and medical sciences
Biological treatment of waters
Biomass
Biotechnology
Constraining
Culture
Domestic
Energy
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Mathematical analysis
Microalgae
Microorganism
Natural energy
Nitrogen
Optimization
Other wastewaters
Phosphorous
Pollution
Reactors
Stoichiometric
Waste water
Wastewaters
Water treatment and pollution
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Summary:Stoichiometric equations for microalgae–microorganism nexus culture were established by using 18 sets of experimental data from the literature where clarified domestic wastewater (CDWW) was used as a growth media. The best correlations between observed and calculated coefficients in the equations were 0.908, 0.878, 0.838, and 0.849 for reactors R1, R2, R3, and the sum of three reactors, respectively. Then, each stoichiometric equation was generalized to quantitatively describe the reactions in each set of data for 18 different experimental conditions. By analysis, the most and second most sensitive limiting parameters were identified from the 18 stoichiometric equations. The formulas and equations were further upgraded to a generic form for a general organic growth medium (CaHbOcNdPf). Microalgae–microorganism nexus was established by using the developed coefficients to depict the limited and balanced reactions. The study showed that nitrogen and phosphorus are required as additives in CDWW in order to gain a balanced microalgae–microorganism nexus for a higher yield of microalgae and microorganisms. For a balanced microalgae–microorganism nexus, the optimal nutritional molar ratio of C, N, and P in the CDWW growth medium was found to be 53:15:1.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2013.791768