Optimization of biohydrogen production from sugarcane bagasse by mixed cultures using a statistical method

Sangyoka, Suksaman; Reungsang, Alissara; Lin, Chiu‐Yue

doi:10.1016/j.serj.2016.05.001

Cited by 50 publications

(10 citation statements)

References 32 publications

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“…Therefore, co-digestion of EFB with another substrate having low C:N ratio of DC is required to balance C:N ratio in the AD system. Anaerobic sludge used as inoculum in this investigation having C:N ratio of 8.0 is virtually similar to that of 8.2 reported by [12] but rather high than that of 3.0 and 2.5 reported by [21] and [22] respectively. Anaerobic sludge from L-AD is suggested for being used as better inoculum for lignocellulose SS-AD system than other inoculum sources of activated sludge, manure, and rumen fluid due to higher content of microorganism, nutrients, and buffers [13].…”

Section: Microbial Community Analysissupporting

confidence: 80%

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

et al. 2019

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Oil palm empty fruit bunches (EFB) and palm oil decanter cake (DC) were used to investigate biogas production by using solid-state anaerobic co-digestion (SS-AcoD) with 15% total solid (TS) content. Solid state anaerobic digestion (SS-AD) using substrate to inoculum (S:I) ratio of 3:1, methane yields of 353.0 mL-CH4/g-VS and 101.5 mL-CH4/g-VS were respectively achieved from mono-digestion of EFB without oil palm ash (OPA) addition and of DC with 10% OPA addition under mesophilic conditions 35 °C. By adding 5% OPA to SS-AD using 3:1 S:I ratio under thermophilic conditions (55 °C), mono-digestion of EFB and DC provided methane yields of 365.0 and 160.3 mL-CH4/g-VS, respectively. Furthermore, SS-AcoD of EFB:DC at 1:1 mixing ratio (volatile solid, VS basis), corresponding to carbon to nitrogen (C:N) ratio of 32, gathering with S:I ratio of 3:1 and 5% ash addition, synergistic effect is observed together with similar methane yields of 414.4 and 399.3 mL-CH4/g-VS, achieved under 35 °C and 55 °C, respectively. According to first order kinetic analysis under synergistic condition, methane production rate from thermophilic operation is 5 times higher than that from mesophilic operation. Therefore, SS-AcoD could be potentially beneficial to generate biogas from EFB and DC.

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Section: Microbial Community Analysissupporting

confidence: 80%

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

et al. 2019

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“…as a substrate and sucrose for control batch fermentation set. The different types of substrate affected the batch anaerobic dark fermentation [38]. Only Batch Sets 3 and 4 of sucrose fermentation could produce hydrogen of 199 ± 17 mL-H 2 (17 mL-H 2 /g-VS) and 170 ± 14 mL-H 2 (10 mL-H 2 /g-VS), respectively, which were lower than Batch Sets 3 and 4 of Chlorella sp.…”

Section: Hydrogen Productionmentioning

confidence: 92%

Optimization of Batch Dark Fermentation of Chlorella sp. Using Mixed-Cultures for Simultaneous Hydrogen and Butyric Acid Production

et al. 2019

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This paper reports on the optimum conditions for simultaneous hydrogen and butyric acid production from microalgae (Chlorella sp.) using enriched anaerobic mixed cultures as inoculum. The fermentation was objectively carried out under acidogenic conditions to achieve butyric acid for further ABE fermentation in solventogenesis stage. The main effects of initial pH (5 and 7), temperature (35 °C and 55 °C), and substrate concentration (40, 60, 80, and 100 g-VS/L) for hydrogen and butyric acid production were evaluated by using batch fermentation experiment. The major effects on hydrogen and butyric acid production are pH and temperature. The highest production of hydrogen and butyric acid was observed at pH 7 and temperature 35 °C. Using initial Chlorella sp. concentration of 80 g-VS/L or 100 g-VS/L at pH 7 and temperature 35 °C could produce hydrogen with an average yield of 22 mL-H2/g-VS along with high butyric acid production yield of 0.05 g/g-VS, suggesting that microalgae (Chlorella sp.) has potential to be converted directly to butyric acid by using acidogenesis under above optimum conditions.

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“…The other authors have also reported a possibility to apply response surface methodology to describe the effectiveness of the process. (Dahunsi et al 2017;Ko et al 2009;Lay 2001;Lay et al 2005;Sangyoka et al 2016;Sekoai 2016). However, in mentioned papers, the authors focused on one type of raw material and its processing.…”

Section: Enzymatic Cocktail Composition and Saccharification Parametementioning

confidence: 99%

The effect of organic acids and alcohols on precipitation of phosphate using calcined seashell powder

2019

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Processing of lignocellulosic biomass includes four major unit operations: pre-treatment, hydrolysis, fermentation and product purification prior to biofuel generation via anaerobic digestion. The microorganisms involved in the fermentation metabolize only simple molecules, i.e., monosugars which can be obtained by carrying out the degradation of complex polymers, the main component of lignocellulosic biomass. The object of this paper was to evaluate the saccharification conditions and identify the process parameters that should be applied to improve the saccharification efficiency of lignocellulosic biomass, defined as the simple sugars concentration, which was considered as a crucial parameter for hydrogen generation via dark fermentation. Drawing global conclusions about the occurring changes in the biomass requires learning about the nature of the biomass structure and composition at different stages of the process. Therefore, techniques for analysis, as FTIR, HPLC and SEM were applied. The experiment was planned employing Box-Behnken design. The advantageous operating conditions and the composition of saccharification enzymatic cocktail were identified and their values occurred similar in the applied border conditions for all tested biomass types. Analysis of the intermediate solid and liquid streams generated during the pre-treatment procedure revealed several structural and compositional changes in the biomass.

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Optimization of biohydrogen production from sugarcane bagasse by mixed cultures using a statistical method

Cited by 50 publications

References 32 publications

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

Biogas Production from Oil Palm Empty Fruit Bunches and Palm Oil Decanter Cake using Solid-State Anaerobic co-Digestion

Optimization of Batch Dark Fermentation of Chlorella sp. Using Mixed-Cultures for Simultaneous Hydrogen and Butyric Acid Production

The effect of organic acids and alcohols on precipitation of phosphate using calcined seashell powder

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