From: Achieving pH control in microalgal cultures through fed-batch addition of stoichiometrically-balanced growth media
Nitrogen source
Stoichiometric coefficients
α
Ψ
δ
λ
N2
1
y 2
x 2
1 + x 4 − z 2
NH4+
y
x 2 − 2 y
1 + x 4 − y − z 2
NO3−
1 + x 4 + 3 y 2 − z 2
CO(NH2)2
1 − y 2
x 2 − y
1 + x 4 − 3 y 4 − z 2