. 2020 Sep 30;10:16105. doi: 10.1038/s41598-020-72823-9

Table 3.

Statistical comparison of power output of algal-biophotovoltaic device with suspended and immobilized of Chlorella UMACC 313 in dark and light conditions under conventional white LED light and PLA on days 0, 4, 8, and 12.

Day	Light source	Condition	Maximum current density (mA m⁻²)		Maximum power density (mW m⁻²)
Day	Light source	Condition	Light	Dark	Light	Dark
0	Conventional white LED light 90 µmol photons m⁻² s⁻¹	Suspended	1.667 ± 0.024^f	1.297 ± 0.034^h	0.069 ± 0.010^j	0.051 ± 0.004^e
0		Immobilized	2.769 ± 0.072^e	2.363 ± 0.028^g	0.173 ± 0.008^fg	0.127 ± 0.011^d
4		Suspended	2.87 ± 0.21^e	2.495 ± 0.047^g	0.095 ± 0.005^ij	0.079 ± 0.001^de
4		Immobilized	3.889 ± 0.076^d	2.714 ± 0.048^g	0.129 ± 0.004^hi	0.0824 ± 0.011^de
8		Suspended	1.91 ± 0.12^f	1.640 ± 0.072^h	0.156 ± 0.008^gh	0.102 ± 0.002^de
8		Immobilized	3.95 ± 0.10^d	2.724 ± 0.077^fg	0.202 ± 0.012^f	0.133 ± 0.002^d
12		Suspended	1.93 ± 0.11^f	1.697 ± 0.091^h	0.113 ± 0.006^hij	0.084 ± 0.004^de
12		Immobilized	3.10 ± 0.38^e	2.43 ± 0.27^g	0.149 ± 0.014^gh	0.117 ± 0.007^de
0	PLA 90 µmol photons m⁻² s⁻¹	Suspended	3.85 ± 0.26^d	2.493 ± 0.045^g	0.378 ± 0.013^e	0.128 ± 0.008^d
0		Immobilized	4.69 ± 0.10^bc	4.40 ± 0.32^bc	0.468 ± 0.004^bc	0.384 ± 0.055^ab
4		Suspended	4.19 ± 0.21^cd	3.32 ± 0.21^ef	0.418 ± 0.027^de	0.334 ± 0.042^bc
4		Immobilized	5.30 ± 0.14^b	4.977 ± 0.015^b	0.557 ± 0.029^a	0.408 ± 0.009^a
8		Suspended	5.37 ± 0.17^b	3.61 ± 0.23^de	0.502 ± 0.026^b	0.329 ± 0.026^bc
8		Immobilized	6.78 ± 0.30^a	5.70 ± 0.37^a	0.581 ± 0.009^a	0.451 ± 0.034^a
12		Suspended	5.13 ± 0.46^b	4.20 ± 0.18^cd	0.422 ± 0.009^de	0.310 ± 0.028^c
12		Immobilized	6.17 ± 0.38^a	4.47 ± 0.41^bc	0.440 ± 0.009^cd	0.332 ± 0.017^bc

Data as means ± S.D. (n = 3). Different letters indicate significant difference between different values (ANOVA, Tukey̕ s HSD test, p < 0.05).