Bioethanol Production from Lignocellulosic Biomass, A Review

Gamage, Joanne; Lam, Howard; Zhang, Zisheng

doi:10.1166/jbmb.2010.1071

Cited by 45 publications

(13 citation statements)

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“…In general, anatase TiO2 shows the highest photocatalytic activity due to the low recombination rate of photogenerated electron–hole pairs . Therefore, TiO2 nanoparticles have been extensively used in various applications including photocatalytic systems, antifogging, self‐cleaning, and disinfecting coatings in medical applications, water treatment, dye‐sensitized solar cells . However, TiO 2 nanoparticles tend to self‐aggregate in solutions and it is extremely difficult to separate them from the reaction mixture for further use.…”

Section: Introductionmentioning

confidence: 99%

Preparation of aerochitin‐TiO₂ composite for efficient photocatalytic degradation of methylene blue

Dassanayake

Rajakaruna

Abidi

2017

J of Applied Polymer Sci

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An aerochitin–titania (TiO2) composite was successfully synthesized and characterized by Fourier transform infrared spectroscopy, X‐ray diffraction, thermogravimetric analysis, field emission scanning electron microscopy, and N2 adsorption isotherms. The photocatalytic activity of the composite was investigated on the degradation of the model organic pollutant, methylene blue (MB) dye, under UV irradiation. The aerochitin–TiO2 composite showed excellent adsorptive and photocatalytic activity with a degradation degree of 98% for MB. The first‐order rate constants for the photodegradation MB by TiO2 nanoparticles and aerochitin–TiO2 composite were found to be (3.49 ± 0.04) × 10−3 and (1.82 ± 0.02) × 10−2 min−1. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45908.

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Section: Introductionmentioning

confidence: 99%

Preparation of aerochitin‐TiO₂ composite for efficient photocatalytic degradation of methylene blue

Dassanayake

Rajakaruna

Abidi

2017

J of Applied Polymer Sci

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“…Among the varieties of biofuels currently available, bioethanol as a partial replacement gasoline has gained the attention of commercial concerns during the last few years, with the result that much progress has been made in terms of improved strain development, fermentation processes for cellulosic biomass and separation techniques [1,15]. Biobutanol is a superb biofuel with many advantages over bioethanol, such as higher energy content, higher blending rate with gasoline without engine modiWcation, convenient distribution using current pipeline infrastructure and better auto emission performance [10].…”

Section: Introductionmentioning

confidence: 99%

Improving the Clostridium acetobutylicum butanol fermentation by engineering the strain for co-production of riboflavin

Cai

Bennett

2010

J Ind Microbiol Biotechnol

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Solvent-producing clostridia are well known for their capacity to use a wide variety of renewable biomass and agricultural waste materials for biobutanol production. To investigate the possibility of co-production of a high value chemical during biobutanol production, the Clostridium acetobutylicum riboflavin operon ribGBAH was over-expressed in C. acetobutylicum on Escherichia coli-Clostridium shuttle vector pJIR750. Constructs that either maintained the original C. acetobutylicum translational start codon or modified the start codons of ribG and ribB from TTG to ATG were designed. Riboflavin was successfully produced in both E. coli and C. acetobutylicum using these plasmids, and riboflavin could accumulate up to 27 mg/l in Clostridium culture. Furthermore, the C. acetobutylicum purine pathway was modified by over-expression of the Clostridium purF gene, which encodes the enzyme PRPP amidotransferase. The function of the plasmid pJaF bearing C. acetobutylicum purF was verified by its ability to complement an E. coli purF mutation. However, co-production of riboflavin with biobutanol by use of the purF over-expression plasmid was not improved under the experimental conditions examined. Further rational mutation of the purF gene was conducted by replacement of amino acid codons D302 V and K325Q to make it similar to the feedback-resistant enzymes of other species. However, the co-expression of ribGBAH and purFC in C. acetobutylicum also did not improve riboflavin production. By buffering the culture pH, C. acetobutylicum ATCC 824(pJpGN) could accumulate more than 70 mg/l riboflavin while producing 190 mM butanol in static cultures. Riboflavin production was shown to exert no effect on solvent production at these levels.

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“…The final concentration of ethanol is influenced by the concentration of the substrate and the efficiency of enzymatic hydrolysis, which is associated with the availability of cellulose (efficiency of pretreatment) and its content in the raw materials. Selection of the correct raw material, type of pretreatment, and selection of enzymatic agent as well as its doses are the key diagnostic issues to be met during the development of a method utilizing a new raw material [28][29][30][31]. Moreover, present-day biotechnology does not only have to deal with the development of screening of microorganisms with industrial potential, which will enable the development of markers used in the selection of proper microorganisms for the process of fermentation.…”

Section: Influence Of the Use Of Ionic Liquids On Enzymatic Hydrolysimentioning

confidence: 99%

Use of Buckwheat Straw to Produce Ethyl Alcohol Using Ionic Liquids

et al. 2019

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Background: Common buckwheat (Fagopyrum esculentum Moench) is an annual spring-emerging crop that is classified among the dicotyledons, due to the manner of its cultivation, use, and chemical composition of seeds. The use of buckwheat straw for energy purposes—for example, for the production of second generation bioethanol—might enable its wider application and increase the cost-effectiveness of tillage. Methods: In this study, we examined the usability of buckwheat straw for the production of bioethanol. We pretreated the raw material with ionic liquids and subsequently performed enzymatic hydrolysis and alcoholic fermentation. The obtained chemometric data were analyzed using the Partial Least Squares (PLS) regression model. PLS regression in combination with spectral analysis within the near-infrared (NIR) spectrum allowed for the rapid determination of the amount of cellulose in the raw material and also provided information on the changes taking place in its structure. Results: We obtained good results for the combination of 1-ethyl-3-methylimidazolium acetate as the ionic liquid and Cellic CTec2 as the enzymatic preparation for the pretreatment of buckwheat straw. The highest concentration of glucose following 72 h of enzymatic hydrolysis was found to be around 5.5 g/dm3. The highest concentration of ethanol (3.31 g/dm3) was obtained with the combination of 1-butyl-3-methylimidazolium acetate for the pretreatment and cellulase from Trichoderma reesei for enzymatic hydrolysis. Conclusions: In summary, the efficiency of the fermentation process is strictly associated with the pool of available fermenting sugars, and it depends on the type of ionic liquid used during the pretreatment and on the enzymatic preparation. It is possible to obtain bioethanol from buckwheat straw using ionic liquid for pretreatment of the raw material prior to the enzymatic hydrolysis and alcoholic fermentation of the material.

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Bioethanol Production from Lignocellulosic Biomass, A Review

Cited by 45 publications

References 0 publications

Preparation of aerochitin‐TiO₂ composite for efficient photocatalytic degradation of methylene blue

Preparation of aerochitin‐TiO₂ composite for efficient photocatalytic degradation of methylene blue

Improving the Clostridium acetobutylicum butanol fermentation by engineering the strain for co-production of riboflavin

Use of Buckwheat Straw to Produce Ethyl Alcohol Using Ionic Liquids

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Bioethanol Production from Lignocellulosic Biomass, A Review

Cited by 45 publications

References 0 publications

Preparation of aerochitin‐TiO2 composite for efficient photocatalytic degradation of methylene blue

Preparation of aerochitin‐TiO2 composite for efficient photocatalytic degradation of methylene blue

Improving the Clostridium acetobutylicum butanol fermentation by engineering the strain for co-production of riboflavin

Use of Buckwheat Straw to Produce Ethyl Alcohol Using Ionic Liquids

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Preparation of aerochitin‐TiO₂ composite for efficient photocatalytic degradation of methylene blue

Preparation of aerochitin‐TiO₂ composite for efficient photocatalytic degradation of methylene blue