Bioconversion of glycerol for bioethanol production using isolated Escherichia coli SS1

Suhaimi, Sheril Norliana; Phang, Lai Yee; Maeda, Takeyasu; Abd‐Aziz, Suraini; Wakisaka, Minato; Shirai, Yoshihito; Hassan, Mohd Ali

doi:10.1590/s1517-83822012000200011

Cited by 37 publications

(15 citation statements)

References 31 publications

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“…Biologically, glycerol can be used as a carbon source by naturally occurring microorganisms such as Escherichia coli , Klebsiella planticola , and Enterobacter aerogenes to produce ethanol, although process efficiency is not high . Chemically, ethanol can also be produced from glycerol by hydrogenolysis using nickel (Ni) catalysts .…”

Section: Introductionmentioning

confidence: 99%

Glycerol hydrogenolysis using a Ni/Ce‐Mg catalyst for improved ethanol and 1,2‐propanediol selectivities

Menchavez

Morra

2017

Can J Chem Eng

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Glycerol, a byproduct from biodiesel production, is an inexpensive and renewable alternative feedstock for producing valuable chemicals. Hydrogenolysis of glycerol produces ethanol and 1,2-propanediol (1,2-PDO) with the help of appropriate catalysts. Commercially available non-specific Ni-based catalysts have been reported for use in producing ethanol along with 1,2-PDO. In this work, a new Ni catalyst on various support materials was developed for the selective production of ethanol and 1,2-PDO using glycerol hydrogenolysis. The Ni catalyst on CeO 2 showed the highest potential for producing both ethanol and 1,2-PDO. The catalyst with 0.15-0.50 g/g (15-50 wt%) Ni on CeO 2 improved glycerol conversion at reaction temperatures of 215-245 8C, however 1,2-PDO selectivity was unsatisfactory. An improvement in 1,2-PDO selectivity was attained when Al, Si, Zn, and/or Mg were added as promoters to the Ni catalyst on CeO 2, while improvement in the selectivity for ethanol occurred only with the addition of Si or Mg. A variation in Mg content showed that 1,2-PDO selectivity was favoured at higher Mg content, while ethanol selectivity peaked at 10 % Mg. Systematic investigations found that the catalyst with 0.25 g/g (25 wt%) Ni on a Ce:Mg (4:1 mol:mol) support provided good selectivities for 1,2-PDO at 68.10 % and ethanol at 9.0 %, respectively.

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Section: Introductionmentioning

confidence: 99%

Glycerol hydrogenolysis using a Ni/Ce‐Mg catalyst for improved ethanol and 1,2‐propanediol selectivities

Menchavez

Morra

2017

Can J Chem Eng

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“…However, during biohydrogen production, a significant amount of ethanol is generated simultaneously which can be coproduced during the process. Thus, ethanol can serve as an alternative ideal fuel or additives utilized by vehicles (Balat and Balat 2009;Suhaimi et al 2012) generated at the end of the process.…”

Section: Fermentationmentioning

confidence: 99%

Exploring untapped energy potential of urban solid waste

Vaish

Srivastava

Singh

et al. 2016

Energ. Ecol. Environ.

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There is continuous increase in quantum and variety of waste being generated by anthropogenic activities. Burgeoning amount of waste being generated has potential to harm the environment and human health. Aggravating the problem, ever-increasing energy demand is putting strain on the non-renewable sources of energy and there is huge gap between the demand and supply of energy. This has led the scientific communities to adopt innovative methods to reduce, reuse and recycle them. Therefore, there is an urgent need to minimize the quantity of waste and meet the current demand profile of energy is required; technologies to recover energy from waste can play a vital role in substantial energy recovery and reduction in waste for final disposal; in addition to meet the rising energy requirement. Generating power from waste has greatly reduced the environmental impact and dependency on fossil fuels for electricity generation. Economically also it is an optimal solution for recovery of heat and power from waste. This paper gives an overview of energy potential stored in waste, major available waste-to-energy technologies and also strategic action plan for implementation of these technologies.

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“…So amylase is added extracellularly to the reaction mixture for the efficient and rapid conversion of starch to glucose and then finally to bioethanol. To the glucose solution obtained post amylase hydrolysis, yeast is added and incubated in an anaerobic condition at 37ºC for 7 days (Suhaimi et al, 2012). To determine the amount of bioethanol produced the solution can be assayed using gas chromatography equipped with flame ionization detector.…”

Section: Production Of Bioethanolmentioning

confidence: 99%

Bacillus Spp. Amylase: Production, Isolation, Characterisation and Its Application

Sachdev

Ojha

Mishra

2016

Int J Appl Sci Biotechnol

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Amylase is one of the leading enzymes used in industry from decades. The preliminary function of this enzyme is the hydrolysis of the starch molecule into glucose units and oligosaccharides. Amylases have spectacular application in broad spectrum of industries such as food, detergent, pharmaceutical and fermentation industries. Among different type of amylases α-amylase is in utmost demand because of its striking features. This particular enzyme is a good substitute over the chemicals catalyst used in industries. α-amylases can be acquired from different sources such as microorganism, animals and plants. Microorganisms are the major source of production of amylase because of the ease of availability, manipulation and operation. The starch converting enzymes is basically generated using submerged fermentation. Some of the prominent characteristics of amylase are its mode of action, substrate specificity and operating condition (temperature and pH). Amylases from different bacterial sources contribute differently to the particular trait of the enzyme. Bacillus amylases have been studied and applied so far because of their robustness in nature and easy accessible pure form of it. Thus this makes it more specific and fit for distinct application in the industry. The purpose of this manuscript was the comparative analysis of the physical and chemical features of α amylases from Bacillus species. It also focuses on the unique characteristics of this enzyme and their industrial applications.

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Bioconversion of glycerol for bioethanol production using isolated Escherichia coli SS1

Cited by 37 publications

References 31 publications

Glycerol hydrogenolysis using a Ni/Ce‐Mg catalyst for improved ethanol and 1,2‐propanediol selectivities

Glycerol hydrogenolysis using a Ni/Ce‐Mg catalyst for improved ethanol and 1,2‐propanediol selectivities

Exploring untapped energy potential of urban solid waste

Bacillus Spp. Amylase: Production, Isolation, Characterisation and Its Application

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