Optimization of Biohydrogen Production with Biomechatronics

Table 4

Experiments examining the effect of ultrasonic influences on hydrogen production.

Exp.	A	B	C	D	Production efficiency		Production rate		Starch surplus ratio		𝜆 (h)
					Average	𝑆/𝑁	Average	𝑆/𝑁	Average	𝑆/𝑁	Average	𝑆/𝑁
					(%)	(dB)	(mL/h)	(dB)	(%)	(dB)	(h)	(dB)
1	1	1	1	1	18.94	18.94	85.40	37.81	10.27	−20.31	22.54	−27.45
2	1	2	2	2	22.66	26.50	131.47	42.10	7.77	−17.86	16.35	−24.44
3	1	3	3	3	23.02	27.10	164.77	43.60	8.32	−18.51	22.03	−26.91
4	2	1	2	3	27.11	28.46	142.18	42.87	7.43	−17.54	15.68	−24.03
5	2	2	3	1	21.82	26.67	127.01	40.10	9.40	−19.60	30.18	−29.65
6	2	3	1	2	26.76	28.17	149.62	43.40	8.38	−18.54	17.32	−25.10
7	3	1	3	2	21.12	25.23	129.84	40.20	7.73	−18.18	24.47	−28.10
8	3	2	1	3	26.68	28.34	218.88	46.70	9.04	−19.30	22.10	−26.91
9	3	3	2	1	20.23	25.82	66.23	36.04	9.50	−19.61	20.69	−26.87