Microalgal TAG production strategies: why batch beats repeated-batch

Table 2 Process comparison

Scenario		TAG yield on light (g mol ^-1_ph )	TAG content (g g^-1)
Batch
1B	HL (Base case)	0.12	0.42
2B	IL	0.23	0.42
3B	LL	0.41	0.43
	Increased maximum photosynthetic rate and decreased residual biomass fraction
4B	HL	0.18	0.52
5B	IL	0.31	0.52
6B	LL	0.49	0.53
Repeated-batch
1RB	HL (Base case)	0.07	0.54
2RB	IL	0.15	0.52
3RB	LL	0.29	0.44
	Optimal N-resupply, cycle duration and harvest volume
4RB	HL	0.09	0.50
5RB	IL	0.18	0.51
6RB	LL	0.33	0.48
	Increased maximum photosynthetic rate and decreased residual biomass fraction
7RB	HL	0.10	0.60
8RB	IL	0.19	0.54
9RB	LL	0.34	0.49
	Optimal N-resupply, cycle duration and harvest volume and Increased maximum photosynthetic rate and decreased residual biomass fraction
10RB	HL	0.11	0.35
11RB	IL	0.22	0.47
12RB	LL	0.39	0.48

Optimized TAG yields on light and TAG contents. B batch; RB repeated-batch. HL High; IL intermediate and LL low light intensities correspond to incident light intensities of 1500, 600 and 200 μmol m⁻² s⁻¹, respectively. The model parameter values at which the TAG yields on light and TAG contents were achieved, are reported in Additional file 6

ISSN: 2731-3654