Trace Metal Effect on Hydrogen Production Using C.acetobutylicum

Alshiyab, Hisham; Kalil, Mohd Sahaid; Hamid, Aidil Abdul; Yusoff, Wan Mohtar Wan

doi:10.3844/ojbsci.2008.1.9

Cited by 16 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding is compatible with Hao et al (2006) and Cao and Zhao (2009) who have reported the positive effect of sodium ion concentration on hydrogen production from sucrose using anaerobic hydrogen producing granular sludge. However, this finding is against the report of Alshiyab et al (2008) that sodium ions are totally detrimental to the hydrogen producing capacity of organisms.…”

Section: Effect Of Sodium Ions On Hydrogen Productioncontrasting

confidence: 80%

Improvement of biohydrogen production by Enterobacter cloacae IIT-BT 08 under regulated pH

Khanna

Kotay

Gilbert

et al. 2011

Journal of Biotechnology

View full text Add to dashboard Cite

Section: Effect Of Sodium Ions On Hydrogen Productioncontrasting

confidence: 80%

Improvement of biohydrogen production by Enterobacter cloacae IIT-BT 08 under regulated pH

Khanna

Kotay

Gilbert

et al. 2011

Journal of Biotechnology

View full text Add to dashboard Cite

“…In addition, the results show that adding an appropriate amount of TEs not only enhanced biohydrogen development but also increased the ratio of H 2 /CO 2 up to 1. In Alshiyab et al's study, they reported that metal ions, such as Fe 2+ /Fe 3+ and Ni 2+ , facilitated an increase in hydrogen production during dark fermentation [15].…”

Section: Optimization Of Biohydrogen With Varying Molasses Concentrat...mentioning

confidence: 98%

Improving Biomethanol Synthesis via the Addition of Extra Hydrogen to Biohydrogen Using a Reverse Water–Gas Shift Reaction Compared with Direct Methanol Synthesis

et al. 2023

View full text Add to dashboard Cite

Conventionally, methanol is derived from a petroleum base and natural gas, but biomethanol is obtained from biobased sources, which can provide a good alternative for commercial methanol synthesis. The fermentation of molasses to produce biomethanol via the production of biohydrogen (H2 and CO2) was studied. Molasses concentrations of 20, 30, or 40 g/L with the addition of 0, 0.01, or 0.1 g/L of trace elements (TEs) (NiCl2 and FeSO4·7H2O) were investigated, and the proper conditions were a 30 g/L molasses solution combined with 0.01 g/L of TEs. H2/CO2 ratios of 50/50% (v/v), 60/40% (v/v), and 70/30% (v/v) with a constant feed rate of 60 g/h for CO2 conversion via methanol synthesis (MS) and the reverse water–gas shift (RWGS) reaction were studied. MS at temperatures of 170, 200, and 230 °C with a Cu/ZnO/Al2O3 catalyst and pressure of 40 barg was studied. Increasing the H2/CO2 ratio increased the maximum methanol product rate, and the maximum H2/CO2 ratio of 70/30% (v/v) resulted in methanol production rates of 13.15, 17.81, and 14.15 g/h, respectively. The optimum temperature and methanol purity were 200 °C and 62.9% (wt). The RWGS was studied at temperatures ranging from 150 to 550 °C at atm pressure with the same catalyst and feed. Increasing the temperature supported CO generation, which remained unchanged at 21 to 23% at 500 to 550 °C. For direct methanol synthesis (DMS), there was an initial methanol synthesis (MS) reaction followed by a second methanol synthesis (MS) reaction, and for indirect methanol synthesis (IMS), there was a reverse water–gas shift (RWGS) reaction followed by methanol synthesis (MS). For pathway 1, DMS (1st MS + 2nd MS), and pathway 2, IMS (1st RWGS + 2nd MS), the same optimal H2/CO2 ratio at 60/40% (v/v) or 1.49/1 (mole ratio) was determined, and methanol production rates of 1.04 (0.033) and 1.0111 (0.032) g/min (mol/min), methanol purities of 75.91% (wt) and 97.98% (wt), and CO2 consumptions of 27.32% and 57.25%, respectively, were achieved.

show abstract

“…The role of the metal irons, such as Fe 2+ /Fe 3+ and Ni 2+ , is found to facilitate both the increase of biomass (cell growth) and hydrogen production during the DF. From the work reported by Hisham et al [93], it was found that the addition of metal elements, such as Ca 2+ or Mg 2+ metal ions, led to a significant decrease in hydrogen generation (−30%, −70%), while the biomass experienced a steady increase up to 40%. According to [94], by adding ferrous chloride during DF, the hydrogen generation was enhanced by 650% (increased to 130 ml.g −1 ).…”

Section: Metal Ionsmentioning

confidence: 99%

A Review of the Enhancement of Bio-Hydrogen Generation by Chemicals Addition

Sun

Yang

et al. 2019

Catalysts

View full text Add to dashboard Cite

Bio-hydrogen production (BHP) produced from renewable bio-resources is an attractive route for green energy production, due to its compelling advantages of relative high efficiency, cost-effectiveness, and lower ecological impact. This study reviewed different BHP pathways, and the most important enzymes involved in these pathways, to identify technological gaps and effective approaches for process intensification in industrial applications. Among the various approaches reviewed in this study, a particular focus was set on the latest methods of chemicals/metal addition for improving hydrogen generation during dark fermentation (DF) processes; the up-to-date findings of different chemicals/metal addition methods have been quantitatively evaluated and thoroughly compared in this paper. A new efficiency evaluation criterion is also proposed, allowing different BHP processes to be compared with greater simplicity and validity.

show abstract

Trace Metal Effect on Hydrogen Production Using C.acetobutylicum

Cited by 16 publications

References 25 publications

Improvement of biohydrogen production by Enterobacter cloacae IIT-BT 08 under regulated pH

Improvement of biohydrogen production by Enterobacter cloacae IIT-BT 08 under regulated pH

Improving Biomethanol Synthesis via the Addition of Extra Hydrogen to Biohydrogen Using a Reverse Water–Gas Shift Reaction Compared with Direct Methanol Synthesis

A Review of the Enhancement of Bio-Hydrogen Generation by Chemicals Addition

Contact Info

Product

Resources

About