Effects of process, operational and environmental variables on biohydrogen production using palm oil mill effluent (POME)
메타 데이터
바이오화학분류
바이오정밀화학
연료
논문
Effects of process, operational and environmental variables on biohydrogen production using palm oil mill effluent (POME)
학술지
International journal of hydrogen energy
저자명
Zainal, Bidattul Syirat; Zinatizadeh, Ali Akhbar; Chyuan, Ong Hwai; Mohd, Nuruol Syuhadaa; Ibrahim, Shaliza
초록
<P><B>Abstract</B></P> <P>A batch study for biohydrogen production was conducted using raw palm oil mill effluent (POME) and POME sludge as a feed and inoculum respectively. Response Surface Methodology (RSM) was used to design the experiments. Experiments were conducted at different reaction temperatures (30–50 °C), inoculum size to substrate ratios (I:S) and reaction times (8–24 h). An optimum condition of biohydrogen production was achieved with COD removal efficiency of 21.95% with hydrogen yield of 28.47 ml H<SUB>2</SUB> g<SUP>−1</SUP> COD removed. The I:S ratio was 40:60, with reaction temperature of 50 °C at 8 h of reaction time. The study showed that a lower substrate concentration (less than 20 g L<SUP>−1</SUP>) for biohydrogen production using pre-settled POME was achievable, with optimum HRT of 8 h under thermophilic condition (50 °C). This study also found that pre-settled POME is feasible to be used as a substrate for biohydrogen production under thermophilic condition.</P> <P><B>Highlights</B></P> <P> <UL> <LI> POME sludge and raw POME is feasible for biohydrogen production. </LI> <LI> Shorter reaction time is significantly increased on the hydrogen yield. </LI> <LI> Inoculum size gives a significant effect on the hydrogen yield and COD removal efficiency. </LI> </UL> </P>