Coupling of the hydrogen and polyhydroxyalkanoates (PHA) production through anaerobic digestion from Taihu blue algae

Yan, Qun; Zhao, Minxing; Miao, Hengfeng; Ruan, Wenquan; Song, Rentao

doi:10.1016/j.biortech.2010.01.073

Cited by 92 publications

(43 citation statements)

References 23 publications

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“…However, the emphasis is being laid on integrating them [20][21][22]. In these studies, different sets of microbes have been used for each step.…”

Section: Polyhydroxybutyrate Productionmentioning

confidence: 99%

“…Integrative approach to couple the bioprocesses for H 2 and PHB production has been gaining importance in recent times [20][21][22]. Here, they have used different sets of microbes for each step and undefined microbial mixtures have been used for H 2 production process.…”

Section: Introductionmentioning

confidence: 99%

“…Here, they have used different sets of microbes for each step and undefined microbial mixtures have been used for H 2 production process. Secondly, there has been substantial supplementation of feed with different nutrients; however, extraction of bioenergy and bioplastics from organic wastes may not need it [22]. Bacillus could survive quite a few distinguished living conditions because it has abilities to withstand environmental stress by forming spores, counter biofilm forming pathogenic bacteria by producing antibiotics and quorum quenching enzymes, etc.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen and Polyhydroxybutyrate Producing Abilities of Bacillus spp. From Glucose in Two Stage System

2011

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Metabolic activities of four Bacillus strains to transform glucose into hydrogen (H 2 ) and polyhydroxybutyrate (PHB) in two stages were investigated in this study. Under batch culture conditions, Bacillus thuringiensis EGU45 and Bacillus cereus EGU44 evolved 1.67-1.92 mol H 2 /mol glucose, respectively during the initial 3 days of incubation at 37°C. In the next 2 days, the residual glucose solutions along with B. thuringiensis EGU45 shaken at 200 rpm was found to produce PHB yield of 11.3% of dry cell mass. This is the first report among the non-photosynthetic microbes, where the Bacillus spp.-B. thuringiensis and B. cereus strains have been shown to produce H 2 and PHB in same medium under different conditions.

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“…However, the emphasis is being laid on integrating them [20][21][22]. In these studies, different sets of microbes have been used for each step.…”

Section: Polyhydroxybutyrate Productionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrogen and Polyhydroxybutyrate Producing Abilities of Bacillus spp. From Glucose in Two Stage System

2011

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“…Water pollution caused by the excessive growth of blue-green algae has become a growing environmental problem. One current approach to reducing the algae in Taihu Lake is to refloat the algae after a bloom has occurred [3,4]. A salvage ship takes up water-laden algae in quantities that can reach several thousand cubic meters per day.…”

Section: Introductionmentioning

confidence: 99%

Performance of an Anaerobic Baffled Filter Reactor in the Treatment of Algae-Laden Water and the Contribution of Granular Sludge

Lü

2014

Water

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This study investigated the performance and stability of an anaerobic baffled filter reactor in the treatment of algae-laden water from Taihu Lake at several organic loading rates. The study also evaluated the capability of soft filler to train granule sludge and improve the anaerobic environment and sludge activity in the anaerobic baffled reactor (ABR), thereby enhancing the treatment efficiency. The ABR consisted of five rectangular compartments, each of which was 120 cm long, 80 cm wide, 80 cm high, and packed with soft filler. The anaerobic baffled filter reactor was found to be an efficient reactor configuration for the treatment of algae-laden water. The reactor was operated at an organic loading rate of 1.5 kg chemical oxygen demand (COD)/(m 3 d) and an ambient temperature of 30 °C; under these conditions, the COD removal efficiency was 80% and the biogas production rate was 293 mL/(Ld). Moreover, the soft filler increased the biomass retention time and decreased the rate at which solids were washed out from the reactor, promoting an improved spatial distribution of the microbial communities within the compartments. Methanoregula, Methanobacteriaceae, Methanosaeta, Methanoculleu, and Thermogymnomonas were the dominant archaeal species in each compartment during an operational period of approximately 100 days. The protease activity in the reactor decreased longitudinally down the reactor from Compartments 1 to 5, whereas the activity of coenzyme F 420 increased. The soft filler played a key role in successfully treating algae-laden water with the anaerobic baffled filter reactor.

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“…Here, the prime need is to look for copolymers which can impart greater strength to biopolymer, utilize a single bacterium and integrate these two processes to generate both the products. Although these concepts have been recognized quite early, however, very limited research has been carried out [5,[7][8][9]. Biological H 2 and PHB production abilities of bacteria have been reported through in silico techniques and through wet experiments as well [4,5,10,11].…”

Section: Introductionmentioning

confidence: 99%

Production of Polyhydroxyalkanoate Co-polymer by Bacillus thuringiensis

et al. 2012

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Integrative processes for the production of bioenergy and biopolymers are gaining importance in recent years as alternatives to fossil fuels and synthetic plastics. In the present study, Bacillus thuringiensis strain EGU45 has been used to generate hydrogen (H 2 ), polyhydroxybutyrate (PHB) and new co-polymers (NP). Under batch culture conditions with 250 ml synthetic media, B. thuringiensis EGU45 produced up to 0.58 mol H 2 /mol of glucose. Effluent from the H 2 production stage was incubated under shaking conditions leading to the production of PHB up to 95 mg/l along with NP of levulinic acid up to 190 mg/l. A twofold to fourfold enhancement in PHB and up to 1.5 fold increase in NP yields was observed on synthetic medium (mixture of M-9?GM-2 medium in 1:1 ratio) containing at 1-2 % glucose concentration. The novelty of this work lies in developing modified physiological conditions, which induce bacterial culture to produce NP.

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Coupling of the hydrogen and polyhydroxyalkanoates (PHA) production through anaerobic digestion from Taihu blue algae

Cited by 92 publications

References 23 publications

Hydrogen and Polyhydroxybutyrate Producing Abilities of Bacillus spp. From Glucose in Two Stage System

Hydrogen and Polyhydroxybutyrate Producing Abilities of Bacillus spp. From Glucose in Two Stage System

Performance of an Anaerobic Baffled Filter Reactor in the Treatment of Algae-Laden Water and the Contribution of Granular Sludge

Production of Polyhydroxyalkanoate Co-polymer by Bacillus thuringiensis

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