Biohydrogen production from seagrass via novel energetically efficient ozone coupled rotor stator homogenization
메타 데이터
바이오화학분류
바이오정밀화학
연료
논문
Biohydrogen production from seagrass via novel energetically efficient ozone coupled rotor stator homogenization
학술지
International journal of hydrogen energy
저자명
Kannah, R. Yukesh; Kavitha, S.; Gunasekaran, M.; Kumar, Gopalakrishnan; Banu, J. Rajesh; Zhen, Guangyin
초록
<P><B>Abstract</B></P> <P>Biohydrogen production from seagrass (SG) has gained much attention due to their chemical composition (carbohydrate rich biomass). In this study, an attempt was made to enhance the biohydrogen production from sea grass through novel ozone coupled rotor-stator homogenization (ORSH). The efficiency of the homogenization pretreatment was evaluated in terms of seagrass lysis and biohydrogen generation. Initially, sea grass was subjected to rotor-stator homogenization (RSH) to optimize its power input (5.4–19.1 W) and energy spent (0–1285 kJ/kg TS). RSH consumes specific energy of 510 kJ/kg TS to achieve seagrass lysis of 10.45%, whereas ORSH achieved 23.7% of seagrass lysis at less energy (212.4 kJ/kg TS) input. The outcome of the present study reveals ORSH reduced 58.3% of energy input and increased 55.9% of SG lysis when compared with RSH. Hence, a considerable amount of energy could be saved through this combinative pretreatment. Biohydrogenesis was done to evaluate and compare the biohydrogen production potential of ORSH sample. Higher ultimate biohydrogen production was achieved by ORSH (90.7 mL/g COD) than RSH (39.6 mL/g COD). A higher energy ratio of 1.17 could be achieved through ORSH.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ozone dosage of 3.1 mg O<SUB>3</SUB>/g SG enhance the biomass lysis during ORHS pretreatment. </LI> <LI> Ozone coupled rotor-stator homogenization sufficiently reduces 58.3% energy input. </LI> <LI> Ultimate biohydrogen of 90.7 mL/g COD was achieved in coupled homogenization. </LI> <LI> An energy ratio of 1.17 was achieved by this proposed pretreatment process. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>