Reducing the Energy Demand of Cellulosic Ethanol through Salt Extractive Distillation Enabled by Electrodialysis

Hussain, Mohammed A. M.; Pfromm, Peter H.

doi:10.1080/01496395.2013.766211

Cited by 13 publications

(6 citation statements)

References 61 publications

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“…Hussain and Pfromm 43 suggested technological modifications in the preconcentration section of CDS, namely, inclusion of double-effect distillation (DED) with split feed and vapor compression distillation (VCD). For VCD, a polytropic efficiency of 0.72 is assumed for the compressor.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

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Review of Technological Advances in Bioethanol Recovery and Dehydration

Singh

Rangaiah

2017

Ind. Eng. Chem. Res.

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Today, at the threshold of the 21st century, rising apprehensions about the instability of oil prices, energy security, and adverse effects of fossil fuels on the environment, have made it imperative to search for alternative energy resources that are clean and sustainable. Among various biofuels, bioethanol is very promising. Bioethanol obtained from the fermentation of biomass is dilute and needs to undergo recovery and dehydration before its use as a fuel. This separation step is one of the energy-intensive steps in bioethanol production, which continues to motivate continual advances in bioethanol separation design. Hence, this review paper focuses on the recent advancements in the development of bioethanol recovery and dehydration processes. It is organized in the form of an annotated bibliography, whereby 54 journal papers and book chapters from the year 2008 to 2016 are summarized based on a classification according to separation technology employed. In addition, quantitative performance indicators (namely, cost and energy required for separation) in the papers/book chapters reviewed are presented on a consistent basis (per unit of bioethanol produced). All these will be useful to researchers and practitioners for technology selection and/or further advances in bioethanol separation.

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Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

“…These results suggest DED is better than VCD for preconcentration, which is contrary to the indication that VCD is better than DED based on results in Hussain and Pfromm. 43 This could be due to differences in design configurations, operating conditions and/or cost data used.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Review of Technological Advances in Bioethanol Recovery and Dehydration

Singh

Rangaiah

2017

Ind. Eng. Chem. Res.

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“…The difficulties of economically producing cellulosic ethanol have kept it from becoming widely available. These difficulties include solids handling, pretreatment costs, high enzyme cost, and low ethanol concentrations (Cundiff & Grisso, 2008; Hussain et al., 2013; Llic et al., 2018; Pandiyan et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Mixed fermentation of corn and pretreated corn stover for fuel ethanol production

Johnston

Nghiem

2021

Cereal Chem

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Background and objectives Fuel ethanol is almost exclusively produced from corn with minor contributions from other cereal grains. Cellulosic ethanol production has significant potential as well as serious limitations. This study proposed that pretreated corn stover could be simultaneously converted and fermented with corn in existing ethanol facilities. Findings Mixed fermentation ethanol yields increased significantly relative to the control fermentations. Incorporation of 5% pretreated corn stover increased ethanol yields by 12.7% with 10% corn mash and 11.9% with 20% corn mash over corn only control fermentations. Using 20% corn, residual xylose and arabinose were 0.072 and 0.023 grams/gram biomass, respectively, indicating addition ethanol potential with a C5 fermenting yeast. DDGS color and lipid contents were negatively impacted; however, the nutrient value of the corn portion is unlikely to be altered. Conclusions Direct incorporation of pretreated corn stover into the corn ethanol process can be done with little or no reduction in corn or stover conversion efficiency. Significance and novelty This study demonstrates clearly that pretreated biomass can be efficiently co‐fermented with corn to produce cellulosic ethanol in yields approximating those from biomass alone and eliminates many of the significant economic and processing issues that stand‐alone cellulosic ethanol facilities face.

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“…Consequently, to obtain anhydrous ethanol, it will be necessary to analyze different strategies to optimize energy costs. Many studies have focused on analyzing the energy costs of separating ethanol and water using both extractive distillation and azeotropic distillation as strategies. , Notwithstanding the foregoing, some other techniques can also be used to obtain anhydrous ethanol.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Phase Equilibria in an Ethanol/Water Binary System: Experimental Data and Modeling

et al. 2021

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Experimental data of vapor−liquid equilibria (VLE) are reported for the binary systems: ethanol (1) + water (2) at 100, 1500, and 2000 kPa. The data were verified for thermodynamic consistency by using different low-and high-pressure tests. The following minimum azeotropes were found for the binary systems: x 1,az = y 1,az = 0.899 and T = 351.39 K at 100 kPa, x 1,az = y 1,az = 0.857 and T = 440.70 K at 1500 kPa, and x 1,az = y 1,az = 0.850 and T = 453.83 K at 2000 kPa. The quality of the azeotropic data obtained was established by considering the trend of the bibliographic azeotropic data. The phase behavior was modeled using the Peng−Robinson equation of state (EOS) with several mixing rules and the perturbed-chain statistical associating fluid theory. The experimental data were satisfactorily correlated and a qualitative agreement with these predictive models was observed. ■ RESEARCH HIGHLIGHTS• VLE of water with ethanol was determined at 100, 1500, and 2000 kPa. • Data were verified with the area test, Van Ness direct test, and point-to-point test. • Data at high pressure were verified by using the Gibbs− Duhem equation. • Azeotropic data of water/ethanol were correlated.• VLE data of water + ethanol mixtures are well modeled by using different EOSs.

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Reducing the Energy Demand of Cellulosic Ethanol through Salt Extractive Distillation Enabled by Electrodialysis

Cited by 13 publications

References 61 publications

Review of Technological Advances in Bioethanol Recovery and Dehydration

Review of Technological Advances in Bioethanol Recovery and Dehydration

Mixed fermentation of corn and pretreated corn stover for fuel ethanol production

High-Pressure Phase Equilibria in an Ethanol/Water Binary System: Experimental Data and Modeling

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