Sequencing batch reactor enhances bacterial hydrolysis of starch promoting continuous bio-hydrogen production from starch feedstock

Chen, Shing Der; Lo, Yung Chung; Lee, Kuo Shing; Huang, Tian; Chang, Jo Shu

doi:10.1016/j.ijhydene.2009.08.043

Cited by 23 publications

(9 citation statements)

References 39 publications

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“…2015 579 hydrogen gas (PERERA et al, 2012). Approximately, 1m 3 of wastewater from starch production may produce 10m 3 of biogas (THANWISED et al, 2012) with percentages of up to 58% of hydrogen (CHEN et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Andreani

Torres

Schultz³

et al. 2015

Eng. Agríc.

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Attempting to associate waste treatment to the production of clean and renewable energy, this research sought to evaluate the biological production of hydrogen using wastewater from the cassava starch treatment industry, generated during the processes of extraction and purification of starch. This experiment was carried out in a continuous anaerobic reactor with a working volume of 3L, with bamboo stems as the support medium. The system was operated at a temperature of 36°C, an initial pH of 6.0 and under variations of organic load. The highest rate of hydrogen production, of 1.1 L.d-1.L-1, was obtained with application of an organic loading rate of 35 g.L-1.d-1, in terms of total sugar content and hydraulic retention time of 3h, with a prevalence of butyric and acetic acids as final products of the fermentation process. Low C/N ratios contributed to the excessive growth of the biomass, causing a reduction of up to 35% in hydrogen production, low percentages of H2 and high concentrations of CO2in the biogas.

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Section: Introductionmentioning

confidence: 99%

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Andreani

Torres

Schultz³

et al. 2015

Eng. Agríc.

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“…On the otherhand, microbial hydrolysis of starch may be the rate‐limiting step in the production process 10, 13. Simultaneous hydrolysis and fermentation of starch is another alternative for fuels and chemicals production from starch 13, 15–17. Enzymatic hydrolysis of starch is a specific and advantageous method yielding desired sugar monomers.…”

Section: Introductionmentioning

confidence: 99%

Effects of operating parameters on acid hydrolysis of ground wheat starch: Maximization of the sugar yield by statistical experiment design

2011

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Fuels and chemicals production from carbohydrate rich waste materials has received considerable attentions in recent years. Pretreatment and hydrolysis are required stages during processing the waste materials for this purpose. Therefore, the objective of this study was to determine the optimum operating conditions in acid hydrolysis of ground wheat (GW) starch for maximum yield of total sugar (TS) formation. Hydrolysis reaction was realized by dilute sulfuric acid and heat treatment in an autoclave. Factorial experiment design was used to determine the significant variables affecting the yield of hydrolysis. The independent variables were particle size (Dp = <74 and 220 µm), acid concentration (A = 0.98–196 g/dm3), GW concentration (GW = 10–20 g/dm3), hydrolysis temperature (T = 90–130°C), and time (t = 5–60 min). The dependent variables were final TS concentration and hydrolysis yield (YH). The significant factors in the hydrolysis of GW were determined as GW concentration, acid (A) concentrations, and hydrolysis temperature (T). Box–Wilson statistical experimental design was used for optimization of hydrolysis conditions by considering the signficant factors. The optimal conditions, maximizing the hydrolysis yield (YH = 0.94) were A = 49 g/dm3 (0.5 M), T = 90°C, GW = 35 g/dm3 and t = 15 min. The most suitable A/GW ratio for the maximum hydrolysis yield of 94% was 1.3.

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“…Baghchehsaraee et al (2008) reported 2.3 mol H 2 mol -1 glucose from heat-treated (65°C for 30 min) anaerobic-digested mixed culture in a batch reactor; however, H 2 yield and microbial diversity decreased when the heat-treatment temperature was increased from 65°C to 90°C. Moreover, heat-pretreatment does not remove methanogens completely and they resume their growth when the conditions are favourable (Chen et al, 2009). Heat (80°C) applied for 3 h to cultures (3% total solids (TS)) enriched H 2 -producing microorganisms, but duration of the optimum heat treatment increased with the total solids percent (Valdez-Vazquez et al, 2009).…”

Section: Heat Treatmentmentioning

confidence: 99%

Energy recovery through biohydrogen production for sustainable anaerobic waste treatment: an overview

Saady

Hung

2015

IJEWM

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The paper is a comprehensive review of the literature for the last five years to provide the current status of H 2 production through anaerobic digestion of industrial waste. Hydrogen production through dark fermentation is still far from industrial application. More research is needed to overcome the metabolic limitation and increase H 2 yield, rate, and substrate-to-H 2 conversion efficiency in a stable process. Generally, studies on effects of culture pretreatment are contradictory and lacked energy and cost analysis in their evaluation. More studies are expected to appear on two-stage and integrative systems of various H 2 and other biofuels or value-added chemicals bioprocesses. Metabolic modelling, metabolic engineering, and molecular biology aspects of the microbial community are the current research areas for H 2 production through dark fermentation and a coordinative research agenda is required to integrate them into a goal-directed plan. Investment and funding of research are the major drives needed to achieve a milestone.

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Sequencing batch reactor enhances bacterial hydrolysis of starch promoting continuous bio-hydrogen production from starch feedstock

Cited by 23 publications

References 39 publications

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Effects of operating parameters on acid hydrolysis of ground wheat starch: Maximization of the sugar yield by statistical experiment design

Energy recovery through biohydrogen production for sustainable anaerobic waste treatment: an overview

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