Bio-ethanol production to be blended with gasoline: Improvements in energy use by adsorption

Jones, R. A.; Tezel, F. Handan; Thibault, Jules; Tolan, Jeffrey S.

doi:10.1002/er.1317

Cited by 14 publications

(8 citation statements)

References 19 publications

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“…In this context, adsorption in porous materials turns out to be an energy‐efficient and cost‐effective technology. Various materials such as activated carbons, polymeric resins, and zeolites have been tested for the separation of alcohol/water, whereas their adsorption capacity and/or selectivity are not satisfactory …”

Section: Introductionmentioning

confidence: 99%

Biofuel purification in GME zeolitic–imidazolate frameworks: From ab initio calculations to molecular simulations

et al. 2015

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A multiscale modeling study is reported on the adsorption of ethanol/water in five zeolitic-imidazolate frameworks (ZIFs) for biofuel purification. The ZIFs 269, 278, 279, and 281) have isoreticular Gmelinite topology but differ in organic linkers. The simulated adsorption isotherms of ethanol and water in ZIF-68 agree fairly well with experimental data. At a low pressure, ZIF-78 exhibits the highest uptake due to strong hydrogen-bonding between ANO 2 groups and adsorbates. The heats of adsorption at infinite dilution largely follow the trend of binding energies estimated from ab initio calculations. At a high pressure, the uptake is governed primarily by free volume but also affected by hydrogen-bonding. Among the five ZIFs, ZIF-79 with hydrophobic ACH 3 groups shows the highest adsorptive selectivity for ethanol/water mixtures. This study provides microscopic insights into the adsorption and separation of ethanol/water in ZIFs, and would facilitate the development of new ZIFs for biofuel purification.

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Section: Introductionmentioning

confidence: 99%

Biofuel purification in GME zeolitic–imidazolate frameworks: From ab initio calculations to molecular simulations

et al. 2015

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“…Biodiesel can be blended with petro‐diesel up to 20% to be compatible with current engines. Another fuel is ethanol, which also has been employed as an oxygenate for gasoline and diesel . However, ethanol suffers from limitations of low energy content (or heat of combustion), which impacts the economy of the blended fuel.…”

Section: Introductionmentioning

confidence: 99%

Biobutanol: science, engineering, and economics

Ranjan

Moholkar

2011

Int. J. Energy Res.

151

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SUMMARYAmong several liquid alternative fuels, biobutanol has shown great promise because of its very similar properties to gasoline. This review provides an overview of research activities in acetone-butanol-ethanol (ABE) fermentation over the past two and a half decades. We have addressed seven important facets of ABE fermentation, viz. biochemistry, microbial cultures, alternative substrates, solvent recovery, fermentation mode and reactor designs, mathematical modeling, and economics. Development of mutant strains having higher yield, selectivity and tolerance to inhibition, and search for cheap alternative substrates for fermentation are most important thrust areas in biobutanol production. New and efficient processes have been developed for in situ removal and recovery of the ABE solvents. Several rigorous kinetic and physiological models for fermentation have been formulated, which form useful tool for optimization of the process. These research activities have been reviewed in this paper. Finally, we have summarized studies on the economic viability of large-scale ABE fermentation processes employing various process designs, substrates, and microbial cultures. With the use of new strains, inexpensive substrates, and superior reactor designs, economic potential of ABE fermentation has been found to be highly attractive. Research efforts in science, engineering, and economics of ABE fermentation have brought biobutanol close to commercialization as liquid alternate fuel.

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“…On the other hand, the increased concentration of CO 2 in the atmosphere owing to the continued burning of fossil fuels has alerted the public to the serious problem of global warming [1]. For this reason, the development and production of bioethanol as a substitute fuel to gasoline has become an important issue [2][3][4][5][6][7]. Conventionally, bioethanol is produced from the fermentation of starchy *Correspondence to: Wei-Hsin Chen, Department of Greenergy Technology, National University of Tainan, Tainan 700, Taiwan, ROC.…”

Section: Introductionmentioning

confidence: 99%

Impact of dilute acid pretreatment on the structure of bagasse for bioethanol production

Chen¹,

Tu²,

Sheen³

2009

Int. J. Energy Res.

103

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Dilute acid pretreatment is a commonly used pretreatment method in the course of producing bioethanol from lignocellulosics and the structure variation of the lignocellulosics is highly related to the pretreatment process. To understand the impact of dilute acid pretreatment on the structure of bagasse, four different pretreatment conditions by varying heating time are considered where the bagasse and the pretreated materials are examined using a variety of analysis methods. The obtained results indicate that the thermogravimetric analysis (TGA) is able to provide a useful insight into the recognition of lignocellulosic structure. Specifically, the peak of the TGA of the pretreated materials moves toward the low temperature region, revealing that the lignocellulosic structure is loosened. However, the characteristic of crystal structure of cellulose remains in the pretreated materials. Increasing heating time enhances the pretreatment procedure; as a result, the average particle size of the investigated materials increases with heating time. This swelling behavior may be attributed to the enlarged holes inside the particles in that the surface area decreases with increasing heating time. In addition, when the heating time is increased to a certain extent (e.g. 15 min), some fragments are found at the surface and they tend to peel off from the surface. It follows that the dilute acid pretreatments have a significant effect on the bagasse structure.

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Bio-ethanol production to be blended with gasoline: Improvements in energy use by adsorption

Cited by 14 publications

References 19 publications

Biofuel purification in GME zeolitic–imidazolate frameworks: From ab initio calculations to molecular simulations

Biofuel purification in GME zeolitic–imidazolate frameworks: From ab initio calculations to molecular simulations

Biobutanol: science, engineering, and economics

Impact of dilute acid pretreatment on the structure of bagasse for bioethanol production

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