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1. A method for concentration of monosaccharide and removal of inhibitors during hydrolysate pretreatment for improved bioethanol production

Author:
Chen, Chenghan; Ma, Kedong; Zhu, Qili; Tan, Furong; Wang, Yanwei; He, Mingxiong; Hu, Guoquan
Source:
Journal of cleaner production 2020 v.260 pp. 120999
ISSN:
0959-6526
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; acetic acid; bioethanol; fossil fuels; furfural; hydrolysates; reverse osmosis; straw; sugars;     Show all 11 Subjects
Abstract:
... Due to its renewable and clean characteristics, bioethanol is an advantageous alternative energy source to fossil fuels. Although crop straw is a suitable material for bioethanol production, the low-concentration of fermentable sugars and the presence of inhibitors such as furfural and acetic acid in straw hydrolysate are not conducive to ethanol fermentation and pose significant limitations. This ...
DOI:
10.1016/j.jclepro.2020.120999

2. Gene regulation of the Lactobacillus vini in response to industrial stress in the fuel ethanol production

Author:
Mendonça, Allyson Andrade; da Silva, Paula Katharina Nogueira; Calazans, Tiago Luiz Santana; de Souza, Rafael Barros; Elsztein, Carolina; de Morais Junior, Marcos Antonio
Source:
Microbiological research 2020 v.236 pp. 126450
ISSN:
0944-5013
Subject:
ethanol fermentation; ethanol fuels; ethanol production,   etc   ; Lactobacillus; bacteria; gene expression; genes; stress response;     Show all 8 Subjects
Abstract:
... The industrial ethanol fermentation imposes several stresses to microorganisms. However, some bacterial species are well adapted and manage to endure these harmful conditions. Lactobacillus vini is one of the most found bacteria in these environments, indicating the existence of efficient tolerance mechanisms. In view of this premise, the present study aimed to describe the tolerance of L. vini to ...
DOI:
10.1016/j.micres.2020.126450

3. Ethanol production from waste pizza by enzymatic hydrolysis and fermentation

Author:
Liu, Yanxu; Han, Wei; Xu, Xiaobin; Chen, Long; Tang, Junhong; Hou, Pingzhi
Source:
Biochemical engineering journal 2020 v.156 pp. 107528
ISSN:
1369-703X
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; enzymatic hydrolysis; hydrolysates; pizza; reducing sugars; wastes;     Show all 8 Subjects
Abstract:
... In this work, the feasibility of ethanol production from waste pizza (WP) by enzymatic hydrolysis and fermentation was investigated. The effects of enzyme volumes (0.02-0.08 mL/L) and WP mass ratios (50−160 g/L) on the performance of enzymatic hydrolysis and ethanol fermentation were also examined. It was observed that the lowest enzyme volume (0.02 mL/L) could completely hydrolyze WP with mass ra ...
DOI:
10.1016/j.bej.2020.107528

4. Functionalizing zein through antisolvent precipitation from ethanol or aetic acid

Author:
Mattice, Kristin D.; Marangoni, Alejandro G.
Source:
Food chemistry 2020 v.313 pp. 126127
ISSN:
0308-8146
Subject:
ethanol,   etc   ; acetic acid; brittleness; viscoelasticity; zein;     Show all 5 Subjects
Abstract:
... Zein forms viscoelastic networks in water which have shown to be extremely brittle and demonstrate low yield strength. This work investigates an alternative method of preparing zein networks through antisolvent precipitation, involving dissolution in ethanol or glacial acetic acid followed by precipitation by addition of excess water. The rheological and structural properties of the zein networks ...
DOI:
10.1016/j.foodchem.2019.126127

5. Assessing the impact of injector included angle and piston geometry on thermally stratified compression ignition with wet ethanol

Author:
Gainey, Brian; Gohn, James; Hariharan, Deivanayagam; Rahimi-Boldaji, Mozhgan; Lawler, Benjamin
Source:
Applied energy 2020 v.262 pp. 114528
ISSN:
0306-2619
Subject:
ethanol,   etc   ; diesel engines; geometry; injectors; temperature profiles;     Show all 5 Subjects
Abstract:
... Recent results have concluded that the efficacy of compression stroke injections in enhancing natural thermal stratification are dependent on the injector’s included angle. Therefore, there is a need to further understand how different hardware affects the efficacy of thermally stratified compression ignition. In this study, three injector included angles are considered: 150°, 118°, and 60°. Compr ...
DOI:
10.1016/j.apenergy.2020.114528

6. Effects of Hydrogen Addition Ratios on Cycle-by-Cycle Variations of a Duel-Fuel Spark Ignition Engine with Ethanol Intake Port Injection and Hydrogen Direct Injection under Various Excess Air Ratios

Author:
Chen, Zhao; Yu, Xiumin; Shi, Weibo; Li, Guanting; Wang, Shen; Guo, Zezhou; Chen, Aoxue; Jin, Yutong
Source:
Energy & fuels 2020 v.34 no.3 pp. 3709-3724
ISSN:
1520-5029
Subject:
ethanol,   etc   ; combustion; fuels; hydrogen; spark ignition engines;     Show all 5 Subjects
Abstract:
... To improve the combustion stability of an ethanol engine under lean-burn conditions, the experiment was carried out on a spark ignition engine with ethanol intake port injection and hydrogen direct injection. To study the effects of ignition timing, excess air ratio, and hydrogen addition ratio on cycle-by-cycle variations of an ethanol engine, five different ignition timings, five different exces ...
DOI:
10.1021/acs.energyfuels.9b03739

7. Mitigating stress in industrial yeasts

Author:
Walker, Graeme M.; Basso, Thiago O.
Source:
Fungal biology 2020 v.124 no.5 pp. 387-397
ISSN:
1878-6146
Subject:
ethanol; ethanol production,   etc   ; Saccharomyces cerevisiae; beverages; bioethanol; biotic stress; energy; fermentation; pH; starvation; temperature; toxicity; yeasts;     Show all 13 Subjects
Abstract:
... The yeast, Saccharomyces cerevisiae, is the premier fungal cell factory exploited in industrial biotechnology. In particular, ethanol production by yeast fermentation represents the world’s foremost biotechnological process, with beverage and fuel ethanol contributing significantly to many countries economic and energy sustainability. During industrial fermentation processes, yeast cells are subje ...
DOI:
10.1016/j.funbio.2019.10.010

8. Revisiting energy efficiency, renewability, and sustainability indicators in biofuels life cycle: Analysis and standardization proposal

Author:
Mayer, Flávio Dias; Brondani, Michel; Vasquez Carrillo, Maria Cecilia; Hoffmann, Ronaldo; Silva Lora, Electo Eduardo
Source:
Journal of cleaner production 2020 v.252 pp. 119850
ISSN:
0959-6526
Subject:
ethanol; ethanol production,   etc   ; biodiesel; case studies; energy balance; energy efficiency; equations; fuel production; sugarcane;     Show all 9 Subjects
Abstract:
... Life Cycle Energy Analysis (LCEA) has been widely used for net energy balance and energy ratio calculation, expressing the overall efficiency, renewability, and sustainability of biofuels production. However, over 27 methodologies have been found in the literature, representing a barrier for the comparison between different studies. The aim of this research is to discuss the main LCEA indicators m ...
DOI:
10.1016/j.jclepro.2019.119850

9. Mathematical modeling of ethanol production from glycerol by Enterobacter aerogenes concerning the influence of impurities, substrate, and product concentration

Author:
Sunarno, Juli Novianto; Prasertsan, Poonsuk; Duangsuwan, Wiriya; Kongjan, Prawit; Cheirsilp, Benjamas
Source:
Biochemical engineering journal 2020 v.155 pp. 107471
ISSN:
1369-703X
Subject:
ethanol; ethanol production,   etc   ; Enterobacter aerogenes; acetic acid; biodiesel; cell growth; developmental stages; glycerol; mathematical models; methanol;     Show all 10 Subjects
Abstract:
... The application of biodiesel derived crude glycerol for ethanol production using Enterobacter aerogenes TISTR 1468 involved multiple interactions among substrate (glycerol), impurities (methanol) and product (ethanol and acetic acid). A mathematical model based on Monod and Luedeking-Piret models were established to simulate the cell performance in the presence of inhibitors. The Monod model was m ...
DOI:
10.1016/j.bej.2019.107471

10. An overview on bioethanol production from lignocellulosic feedstocks

Author:
Toor, Manju; Kumar, Smita S.; Malyan, Sandeep K.; Bishnoi, Narsi R.; Mathimani, Thangavel; Rajendran, Karthik; Pugazhendhi, Arivalagan
Source:
Chemosphere 2020 v.242 pp. 125080
ISSN:
0045-6535
Subject:
ethanol; ethanol production,   etc   ; bioenergy; bioprocessing; biorefining; carbon; commercialization; energy; feedstocks; fermentation; fossil fuels; lignocellulose; saccharification; sugars;     Show all 14 Subjects
Abstract:
... Lignocellulosic ethanol has been proposed as a green alternative to fossil fuels for many decades. However, commercialization of lignocellulosic ethanol faces major hurdles including pretreatment, efficient sugar release and fermentation. Several processes were developed to overcome these challenges e.g. simultaneous saccharification and fermentation (SSF). This review highlights the various ethan ...
DOI:
10.1016/j.chemosphere.2019.125080

11. Simultaneous hydrogen and ethanol production in a thermophilic AFBR: a comparative approach between cellulosic hydrolysate single fermentation and the fermentation of glucose and xylose as co-substrates

Author:
Lopes, Helberth Júnnior Santos; Ramos, Lucas Rodrigues; de Menezes, Camila Aparecida; Silva, Edson Luiz
Source:
Cellulose 2020 v.27 no.5 pp. 2599-2612
ISSN:
0969-0239
Subject:
ethanol; ethanol production,   etc   ; cellulose; energy; fermentation; fluidized beds; glucose; hydrogen; hydrogen production; hydrolysates; xylose;     Show all 11 Subjects
Abstract:
... This study evaluated the effect of hydraulic retention time (HRT) on the simultaneous hydrogen and ethanol production in two anaerobic fluidized bed reactors (55 °C) from mono-fermentation of cellulosic hydrolysate (AFBR-C) and the fermentation of glucose and xylose as co-substrates (AFBR-GX). In AFBR-C, the HRT was decreased from 24 to 8 h, while in AFBR-GX, the HRT was decreased from 16 to 0.5 h ...
DOI:
10.1007/s10570-020-03000-4

12. Comparison of sorghum and maize raw distillates: Factors affecting ethanol efficiency and volatile by-product profile

Author:
Szambelan, Katarzyna; Nowak, Jacek; Szwengiel, Artur; Jeleń, Henryk
Source:
Journal of cereal science 2020 v.91 pp. 102863
ISSN:
0733-5210
Subject:
ethanol; ethanol production,   etc   ; aldehydes; bioethanol; byproducts; corn; cultivars; distillates; energy; esters; fermentation; raw materials; volatile compounds;     Show all 13 Subjects
Abstract:
... The potential of sorghum grain in the production of bioethanol was determined in comparison to maize and as an alternative to it. The effects of the raw materials, the raw material cultivars, and the fermentation process on ethanol efficiency and volatile compound profile of the raw distillates were investigated. The ethanol yield proved to be strongly determined by the variety of the raw material ...
DOI:
10.1016/j.jcs.2019.102863

13. Assessing straw digestate as feedstock for bioethanol production

Author:
Stoumpou, Vasileia; Novakovic, Jelica; Kontogianni, Nikoleta; Barampouti, Elli Maria; Mai, Sofia; Moustakas, Kostantinos; Malamis, Dimitris; Loizidou, Maria
Source:
Renewable energy 2020 v.153 pp. 261-269
ISSN:
0960-1481
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; agricultural wastes; alkali treatment; anaerobic digestion; energy balance; enzymatic hydrolysis; feedstocks; glucose; lignin; methane; renewable energy sources; saccharification; straw;     Show all 15 Subjects
Abstract:
... Anaerobically digested agricultural waste, such as straw digestate, still consists of residual lignin and carbohydrates that may be utilised as substrate for sugars production and alcoholic fermentation. Chemical pretreatment combined with enzymatic hydrolysis was investigated as an alternative valorisation route for digestate. Acid pretreatment along with enzymatic hydrolysis was found to yield l ...
DOI:
10.1016/j.renene.2020.02.021

14. Role of ethanol on particle size and morphology during copper oxalate synthesis by Precipitation-Stripping

Author:
Shah, Khyati; Gupta, Kamalesh; Sengupta, Bina
Source:
Powder technology 2020 v.366 pp. 230-238
ISSN:
0032-5910
Subject:
ethanol,   etc   ; copper; oils; oxalates; oxalic acid; particle size; surface tension;     Show all 7 Subjects
Abstract:
... Copper oxalate particles were synthesized from a copper loaded oil phase using the precipitation-stripping (PS) technique with oxalic acid as the stripping and precipitating agent. The copper source was a spent ammoniacal printed circuit board etch solution and LIX 84I was the metal extractant. The role of ethanol in stripping solution on stripping rates, particle morphology and size was investiga ...
DOI:
10.1016/j.powtec.2020.02.040

15. Mass Transfer Performance of Ethanol Removal by CO₂ Stripping in Different Pneumatic Bioreactors

Author:
Martins, Taise B.; Almeida, Letícia P.; Cerri, Marcel O.; Badino, Alberto C.
Source:
Industrial biotechnology 2020 v.16 no.2 pp. 81-90
ISSN:
1931-8421
Subject:
ethanol,   etc   ; bioreactors; carbon dioxide; hydrodynamics; mass transfer; models; prototypes;     Show all 7 Subjects
Abstract:
... The hydrodynamics and mass transfer characteristics of ethanol stripping with CO₂ were evaluated for a 2.0-L pneumatic bioreactor operated in bubble column (BC), concentric-tube airlift (CTA), and split-cylinder airlift (SCA) configurations, as well as for bubble columns with three different working volumes (2.0, 5.0, and 10.0 L). The results showed that an increase of the global gas hold-up (ɛG) ...
DOI:
10.1089/ind.2019.0035

16. Chemical Kinetics Study on Combustion of Ethanol/biodiesel/n-heptane

Author:
Kong, Jun; Liu, Hanyu; Zheng, Zhaolei
Source:
Renewable energy 2020 v.148 pp. 150-167
ISSN:
0960-1481
Subject:
ethanol,   etc   ; biodiesel; combustion; formaldehyde; heat; heptane; reaction kinetics;     Show all 7 Subjects
Abstract:
... Methyl decanoate (MD), methyl-9-decanoate (MD9D), and n-heptane (H) as alternative blends of biodiesel (B) were used to build a detailed chemical kinetic mechanism containing 3,324 components and 11,053 elementary reactions. This condition verifies that the ignition delay time of the detailed mechanism in the experiment conditions is reasonable. MD and MD9D will produce methyl-2-palmitate (MP2D) a ...
DOI:
10.1016/j.renene.2019.12.011

17. Dechlorination of chlorotoluene rectification residual liquid (CRRL) by using Williamson ether synthesis (WES) method

Author:
Long, Yuyang; Jin, Zhiyuan; Li, Lijun; Zhang, Mingxin; Hu, Lifang; Shen, Dongsheng; Ruan, Jinmu
Source:
Environmental science and pollution research international 2020 v.27 no.12 pp. 14198-14206
ISSN:
0944-1344
Subject:
ethanol,   etc   ; chemical industry; chlorine; dechlorination; dioxins; hazardous waste; sodium; ultrasonics;     Show all 8 Subjects
Abstract:
... Chlorotoluene rectification residual liquid (CRRL) from chlorotolune industry is hard to dispose of because of its high chlorine concentration, which poses high dioxin risk once it is subjected to incinerate. This research employed a chemical approach by using Williamson ether synthesis (WES) method for CRRL dechlorination. It shows that the sodium dosage, the ethanol dosage, and the ultrasonic ti ...
DOI:
10.1007/s11356-020-07957-4

18. Electrochemical quantification of piperine in black pepper

Author:
Wang, Yuanzhe; Chen, Lifu; Chaisiwamongkhol, Korbua; Compton, Richard G.
Source:
Food chemistry 2020 v.309 pp. 125606
ISSN:
0308-8146
Subject:
ethanol,   etc   ; black pepper; electrochemistry; glassy carbon electrode; rapid methods;     Show all 5 Subjects
Abstract:
... A simple, rapid method of the detection of piperine in black pepper is reported using a voltammetric sensor based on a glassy carbon (GC) electrode with analysis following a short one-step extraction using ethanol. The method is based on a novel potential sweep designed to maximise signal sizes and shown with context of the present analytical challenge to be essential for gathering data allowing t ...
DOI:
10.1016/j.foodchem.2019.125606

19. Exploring the gel phase of cationic glycylalanylglycine in ethanol/water. I. Rheology and microscopy studies

Author:
Thursch, Lavenia J.; DiGuiseppi, David; Lewis, Todd R.; Schweitzer-Stenner, Reinhard; Alvarez, Nicolas J.
Source:
Journal of colloid and interface science 2020 v.564 pp. 499-509
ISSN:
0021-9797
Subject:
ethanol,   etc   ; hydrogels; microscopy; microstructure; rheology; solubility; temperature; thermal stability; tripeptides;     Show all 9 Subjects
Abstract:
... The cationic tripeptide glycylalanylglycine (GAG) self-assembles into long, thick crystalline fibrils in an ethanol/water solution. At sufficiently high concentrations, the fibrils form a volume spanning hydrogel network. We report an extensive rheology and microscopy-based study regarding the self-assembly of GAG in ethanol/water solutions to understand the conditions for fibril formation as well ...
DOI:
10.1016/j.jcis.2019.10.029

20. Insight into Crystal Phase Dependent CO Dissociation on Rh Catalyst from DFT and Microkinetic Modeling

Author:
Hao, Xiaobin; Zhang, Riguang; Ling, Lixia; Fan, Maohong; Li, Debao; Wang, Baojun
Source:
Journal of physical chemistry 2020 v.124 no.12 pp. 6756-6769
ISSN:
1932-7455
Subject:
ethanol,   etc   ; carbon monoxide; catalysts; hydrogenation; models; physical chemistry; rhodium;     Show all 7 Subjects
Abstract:
... For the sake of understanding deeply the formation of the ethanol from CO hydrogenation on the rhodium-based catalyst, the investigation on the relationship of the activity–structure for CO dissociation on Rh metal surface is necessary. Here, the effect of FCC and HCP Rh crystal phases and Rh surfaces on CO dissociation is predicted through DFT calculations, the equilibrium crystal shapes, and mic ...
DOI:
10.1021/acs.jpcc.0c00909