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1. Agroindustrial best practices that contribute to technical efficiency in Brazilian sugar and ethanol production mills

Author:
Lemos, Stella Vannucci; Salgado, Alexandre Pereira; Duarte, Alexandre; de Souza, Marco Antonio Alves; de Almeida Antunes, Fernanda
Source:
Energy 2019 v.177 pp. 397-411
ISSN:
0360-5442
Subject:
ethanol; ethanol production,   etc   ; milling; models; regression analysis; sugarcane; sugars;     Show all 7 Subjects
Abstract:
... The agricultural and industrial indicators that contribute to the efficiency of sugarcane mills were investigated in this study. A two-stage Data Envelopment Analysiswith output approach was applied to 271 mills for the data from the 2006/2007 season to the 2015/2016 season. The first stage consisted of the elaboration of two efficiency models using the total milling yield of the crop (t) and the ...
DOI:
10.1016/j.energy.2019.04.053

2. Proposal of operating best practices that contribute to the technical efficiency in Brazilian sugar and ethanol mills

Author:
Duarte, Alexandre; Salgado Jr, Alexandre Pereira; Lemos, Stella Vannucci; de Souza Jr, Marco Antonio Alves; Antunes, Fernanda de Almeida
Source:
Journal of cleaner production 2019 v.214 pp. 173-184
ISSN:
0959-6526
Subject:
ethanol; ethanol production,   etc   ; cane sugar; case studies; crushing; interviews; sugars;     Show all 7 Subjects
Abstract:
... Technical efficiency is one of the main performance indicators in a sugar and ethanol mill, and it can be indicated by the percentage of cane sugar recovered and transformed into sugar, ethanol, and other products. Thus, given the sector's current crisis, to increase competition and optimize the performance, productive units need to improve their efficiency in relation to the use of inputs. Theref ...
DOI:
10.1016/j.jclepro.2018.12.204

3. Auto-ignition of direct injection spray of light naphtha, primary reference fuels, gasoline and gasoline surrogate

Author:
Wang, Libing; Wu, Zengyang; Ahmed, Ahfaz; Badra, Jihad A.; Sarathy, S. Mani; Roberts, William L.; Fang, Tiegang
Source:
Energy 2019 v.170 pp. 375-390
ISSN:
0360-5442
Subject:
ethanol,   etc   ; ambient temperature; combustion; gasoline;     Show all 4 Subjects
Abstract:
... In this work, the spray and auto-ignition characteristics of light naphtha (LN), primary reference fuels (PRF65, PRF95), Haltermann gasoline (CARB LEVIII, 10 vol% ethanol), and a gasoline surrogate were studied in an optically accessible constant volume combustion chamber. An outwardly opening hollow cone piezoelectric gasoline direct injection fuel injector was used. Five ambient temperatures fro ...
DOI:
10.1016/j.energy.2018.12.144

4. Adjustable pervaporation performance of Zr‐MOF/poly(vinyl alcohol) mixed matrix membranes

Author:
Wu, Guorong; Li, Yongliang; Geng, Yanzi; Lu, Xiaoyu; Jia, Zhiqian
Source:
Journal of chemical technology and biotechnology 2019 v.94 no.3 pp. 973-981
ISSN:
0268-2575
Subject:
ethanol,   etc   ; permeability; pervaporation; polyvinyl alcohol;     Show all 4 Subjects
Abstract:
... BACKGROUND: Polymer membranes often display trade‐off effects between permeation flux and separation factor in pervaporation, and exploring the strategies for breaking the effects is crucial. In this study, by altering the organic linkers (1,4‐benzenedicarboxylate acid, 2‐hydroxyterephthalic acid, 2,5‐dihydroxyterephthalic acid and biphenyl‐4,4‐dicarboxylate), UiO‐66, UiO‐66‐OH, UiO‐66‐(OH)₂ and U ...
DOI:
10.1002/jctb.5846

5. Alternative Sample-Homogeneity Test for Quantitative and Qualitative Proficiency Testing Schemes

Author:
Coucke, Wim; Tanasković, Jelena Vlašić; Bouacida, Lobna; Broeders, Sylvia; China, Bernard; Demarteau, Marianne; Ghislain, Vanessa; Lenga, Yolande; Van Blerk, Marjan; Vandevelde, Nathalie; Verbeke, Hannelien; Wathlet, Sandra; Soumali, Mohamed Rida
Source:
Analytical chemistry 2019 v.91 no.3 pp. 1847-1854
ISSN:
1520-6882
Subject:
ethanol,   etc   ; blood; probability; standard deviation;     Show all 4 Subjects
Abstract:
... Proficiency Testing (PT) External Quality Assessment (EQA) schemes are designed to ascertain the ability of individual laboratories to perform satisfactorily with respect to their peer laboratories or to limits imposed by external sources. Observed deviation of a laboratory result for a PT sample must be entirely attributed to the laboratory and not to the PT provider. To minimize the probability ...
DOI:
10.1021/acs.analchem.8b03313

6. Linear α-alcohols production from supercritical ethanol over Cu/Al2O3 catalyst

Author:
Chistyakov, A.V.; Nikolaev, S.A.; Zharova, P.A.; Tsodikov, M.V.; Manenti, F.
Source:
Energy 2019 v.166 pp. 569-576
ISSN:
0360-5442
Subject:
ethanol,   etc   ; butanol; catalysts; water content;     Show all 4 Subjects
Abstract:
... In this paper, Cu/Al2O3 catalysts with different metal loadings was applied for the direct ethanol conversion into linear α-alcohols in the supercritical regime. 5% Cu/Al2O3 catalyst was found to provide ethanol conversion into 1-butanol, 1-hexanol and 1-octanol with 80.2% selectivity of 1-butanol or total selectivity of linear α-alcohols of 95.5 at 33.5% conversion of ethanol. The supercritical c ...
DOI:
10.1016/j.energy.2018.10.071

7. Cold hydrolysis of cassava pulp and its use in simultaneous saccharification and fermentation (SSF) process for ethanol fermentation

Author:
Siriwong, Tanyaporn; Laimeheriwa, Bustomi; Aini, Uyun Nurul; Cahyanto, Muhammad Nur; Reungsang, Alissara; Salakkam, Apilak
Source:
Journal of biotechnology 2019 v.292 pp. 57-63
ISSN:
0168-1656
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; biotransformation; cassava; hydrolysis; mathematical models; pulp; reducing sugars; saccharification;     Show all 10 Subjects
Abstract:
... The present study investigated cold hydrolysis of cassava pulp (CP) and the use of cold hydrolysis with simultaneous saccharification and fermentation (SSF) for ethanol production. Cold hydrolysis of 100 g-CP/L at 50 °C for 2 h, followed by at 30 °C for 72 h resulted in the production of 71.5 ± 1.8 g/L of reducing sugar, with a yield of 0.72 g/g-CP. A mathematical model describing the cold hydroly ...
DOI:
10.1016/j.jbiotec.2019.01.003

8. Wheat gluten hydrolysates and their fractions improve multiple stress tolerance and ethanol fermentation performances of yeast during very high-gravity fermentation

Author:
Yang, Huirong; Zong, Xuyan; Xu, Yingchao; Zeng, Yingjie; Zhao, Haifeng
Source:
Industrial crops and products 2019 v.128 pp. 282-289
ISSN:
0926-6690
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; biomass; cell membranes; stress tolerance; wheat protein hydrolysates; yeasts;     Show all 8 Subjects
Abstract:
... Wheat gluten hydrolysates (WGH) and their fractions (0%, 20% and 40% ethanol fractions) obtained on XAD-16 were used to examine their effects on multiple stress tolerance and ethanol fermentation performances of yeast during very high-gravity (VHG) fermentation. Results showed that WGH and their fractions supplementations increased significantly osmotic/ethanol stress tolerance, growth and vitalit ...
DOI:
10.1016/j.indcrop.2018.11.026

9. Fed-batch ethanol fermentation at low temperature as a way to obtain highly concentrated alcoholic wines: Modeling and optimization

Author:
Veloso, Ivan I.K.; Rodrigues, Kaio C.S.; Sonego, Jorge L.S.; Cruz, Antonio J.G.; Badino, Alberto C.
Source:
Biochemical engineering journal 2019 v.141 pp. 60-70
ISSN:
1369-703X
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; batch fermentation; cell viability; kinetics; models; temperature; wines; yeasts;     Show all 10 Subjects
Abstract:
... The effect of product inhibition on yeast hinders the production of wine with ethanol concentration above 80.0 g L−1 (∼10°GL) in the industrial ethanol production process commonly performed at 34 °C. Lowering the fermentation temperature is a way to produce wines with higher ethanol contents. In this work, batch fermentations were carried out at temperatures of 28, 30, 32, and 34 °C, with initial ...
DOI:
10.1016/j.bej.2018.10.005

10. Effects of Glucose Concentration on Ethanol Fermentation of White-Rot Fungus Phanerochaete sordida YK-624 Under Aerobic Conditions

Author:
Mori, Toshio; Kondo, Ojiro; Kawagishi, Hirokazu; Hirai, Hirofumi
Source:
Current microbiology 2019 v.76 no.3 pp. 263-269
ISSN:
0343-8651
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; Phanerochaete sordida; aerobic conditions; enzymes; gene expression; glucose; mycelium; pyruvic acid; white-rot fungi; yeasts;     Show all 12 Subjects
Abstract:
... White-rot fungi are microorganisms capable of ethanol fermentation; however, the specific conditions activating ethanol fermentation are unclear in contrast to fermentation by yeasts. In this study, we investigated the conditions favoring ethanol fermentation by the white-rot fungus Phanerochaete sordida YK-624, which is able to produce ethanol from woody material. In aerobic stationary cultivatio ...
DOI:
10.1007/s00284-018-01622-3

11. Ethanol production from mixtures of Distiller’s Dried Grains with Solubles (DDGS) and corn

Author:
Li, Xiujuan; Chen, Sitong; Yu, Yang; Wang, Shengwei; Xu, Zhaoxian; Huang, He; Jin, Mingjie
Source:
Industrial crops and products 2019 v.129 pp. 59-66
ISSN:
0926-6690
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; cellulose; coproducts; corn; cost effectiveness; dry milling; enzymatic hydrolysis; feedstocks; hydrolysates; industry; liquids; saccharification; sugars;     Show all 15 Subjects
Abstract:
... The dry milling ethanol industry produces Distillers’ Dried Grains with Solubles (DDGS) as major co-products, which are composed of unhydrolyzed and unfermented polymeric sugars. Ethanol fermentation with the mixture of DDGS and corn has the potential to reduce cost, further utilize sugars in the DDGS and increase overall ethanol production in current dry grind process. In the current study, DDGS ...
DOI:
10.1016/j.indcrop.2018.11.075

12. Production of high-concentration bioethanol from cassava stem by repeated hydrolysis and intermittent yeast inoculation

Author:
Tanaka, Kazumasa; Koyama, Mitsuhiko; Pham, Phan Thi; Rollon, Analiza Palenzuela; Habaki, Hiroaki; Egashira, Ryuichi; Nakasaki, Kiyohiko
Source:
International biodeterioration & biodegradation 2019 v.138 pp. 1-7
ISSN:
0964-8305
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; Saccharomyces cerevisiae; acid hydrolysis; autoclaving; bioethanol; biomass; cassava; furfural; glucose; hydrolysates; temperature; xylose; yeasts;     Show all 15 Subjects
Abstract:
... Methods for obtaining high-concentration (ca. 40 g/L) ethanol from cassava stem (CS) were explored by investigating the effects of acid hydrolysis conditions, hydrolysate concentration, and intermittent inoculation of yeast on ethanol fermentation. Two-step acid hydrolysis demonstrated that a reduction in autoclaving temperature from 121 °C to 111 °C remarkably lowered the furfural concentration i ...
DOI:
10.1016/j.ibiod.2018.12.007

13. Ethanol fermentation from non-detoxified lignocellulose hydrolysate by a multi-stress tolerant yeast Candida glycerinogenes mutant

Author:
Zhao, Meilin; Shi, Dingchang; Lu, Xinyao; Zong, Hong; Zhuge, Bin; Ji, Hao
Source:
Bioresource technology 2019 v.273 pp. 634-640
ISSN:
0960-8524
Subject:
ethanol; ethanol fermentation; ethanol production,   etc   ; Candida; Saccharomyces cerevisiae; acetic acid; biomass; furfural; hydrolysates; lignocellulose; mutants; sugarcane bagasse; temperature; yeasts;     Show all 14 Subjects
Abstract:
... The aim of this work was to study ethanol fermentation properties of the robust mutant Candida glycerinogenes UG21 from non-detoxified lignocellulose hydrolysate. C. glycerinogenes UG21 with high tolerance to elevated temperature, acetic acid, and furfural was obtained and applied in lignocellulose-based ethanol production. C. glycerinogenes UG21 exhibited highly-efficient degradation ability to f ...
DOI:
10.1016/j.biortech.2018.11.053

14. Nitrogen explosive decompression pre-treatment: An alternative to steam explosion

Author:
Raud, M.; Krennhuber, K.; Jäger, A.; Kikas, T.
Source:
Energy 2019 v.177 pp. 175-182
ISSN:
0360-5442
Subject:
ethanol,   etc   ; bioethanol; biomass; glucose; nitrogen; steam; temperature;     Show all 7 Subjects
Abstract:
... When using the novel N2 explosive decompression pre-treatment, its effect was investigated in relation to the biomass structure and chemical processes during the treatment process. The results that were gained from this testing were compared to those for the widely-used steam explosion pre-treatment method in order to be able to present the advantages in using each method. Both methods are economi ...
DOI:
10.1016/j.energy.2019.04.071

15. Sub-1 nm PtSn ultrathin sheet as an extraordinary electrocatalyst for methanol and ethanol oxidation reactions

Author:
Chen, Jee-Yee; Lim, Suh-Ciuan; Kuo, Chun-Hong; Tuan, Hsing-Yu
Source:
Journal of colloid and interface science 2019 v.545 pp. 54-62
ISSN:
0021-9797
Subject:
ethanol,   etc   ; carbon; catalysts; durability; methanol; nanosheets; oxidation;     Show all 7 Subjects
Abstract:
... Sub-1 nm PtSn nanosheets of 0.6–0.9 nm in thickness were synthesized via a solution colloidal method and were applied as electrooxidation catalysts for methanol oxidation reaction (MOR) and ethanol oxidation (EOR) in alkaline and acid environments. Owing to the specific structural and compositional characteristics, the as-prepared PtSn nanosheets exhibits superior activity and durability relative ...
DOI:
10.1016/j.jcis.2019.02.082

16. Hollow porous rhodium nanoballs

Author:
Zhang, Jiawei; Jiang, Yating; Shi, Shulin; Li, Huiqi; Chen, Jiayu; Kuang, Qin; Xie, Zhaoxiong; Zheng, Lansun
Source:
Chemical communications 2019 v.55 no.34 pp. 4989-4992
ISSN:
1364-548X
Subject:
ethanol,   etc   ; catalytic activity; chemical reactions; electrochemistry; rhodium;     Show all 5 Subjects
Abstract:
... Hollow porous rhodium (Rh) nanoballs are prepared via a facile one-pot reaction. They are porous and possess dendritic exteriors, and it is easy to get them with a clean surface. Owing to the structrual advantages, they exhibit superior electrochemical catalytic activity and structural stability to the commercial Pt black towards ethanol electro-oxidation in alkaline medium. ...
DOI:
10.1039/c9cc01572h

17. Generation of nanoparticles upon mixing ethanol and water; Nanobubbles or Not?

Author:
Alheshibri, Muidh; Craig, Vincent S.J.
Source:
Journal of colloid and interface science 2019 v.542 pp. 136-143
ISSN:
0021-9797
Subject:
ethanol,   etc   ; bubbles; deaeration; mixing; nanobubbles; nanoparticles; solvents;     Show all 7 Subjects
Abstract:
... The debate as to whether nanoparticles that are formed upon mixing ethanol and water are nanobubbles or other nanoparticles has continued over the past decade. In this work, we test the hypothesis that long lived bulk nanobubbles are produced upon mixing ethanol and water, using techniques that probe the density and the pressure response of the nanoparticles.Nanoparticles were generated spontaneou ...
DOI:
10.1016/j.jcis.2019.01.134

18. Cellulose nanosheets formed by mild additive-free ball milling

Author:
Zhang, Yunxiu; Kuga, Shigenori; Wu, Min; Huang, Yong
Source:
Cellulose 2019 v.26 no.5 pp. 3143-3153
ISSN:
0969-0239
Subject:
ethanol,   etc   ; cellulose; milling; nanosheets; oils; silicone;     Show all 6 Subjects
Abstract:
... Cellulose nanosheets similar to those obtained by milling with silicone oil (Zhao et al. in Cellulose 23:2809–2818, 2016) were obtained by mild additive-free milling followed by dispersion in ethanol. Typical nanosheets were of 4 nm thickness, possibly formed by monolayer association of elementary fibrils. The thickness decreased with prolonged milling to 2 nm or less, and the thinnest sheets obse ...
DOI:
10.1007/s10570-019-02282-7

19. Macroscopic and Microscopic View of Competitive and Cooperative Adsorption of Alcohol Mixtures on ZIF-8

Author:
Claessens, Benjamin; Martin-Calvo, Ana; Gutiérrez-Sevillano, Juan José; Dubois, Nicolas; Denayer, Joeri F.M.; Cousin-Saint-Remi, Julien
Source:
Langmuir 2019 v.35 no.11 pp. 3887-3896
ISSN:
1520-5827
Subject:
ethanol,   etc   ; adsorption; butanol; models; prediction; vapors;     Show all 6 Subjects
Abstract:
... While in most adsorptive separations different mixture components tend to compete for different adsorption sites, we report the existence of cooperative effects in the adsorption of alcohols (ethanol and 1-butanol) from the vapor phase on ZIF-8. The presence of these molecules in binary mixtures leads to an increase in their equilibrium capacities, compared to the pure component isotherms. These e ...
DOI:
10.1021/acs.langmuir.8b03946

20. Temperature control of fermentation bioreactor for ethanol production using IMC-PID controller

Author:
Kumar, Munna; Prasad, Durga; Giri, Balendu Shekher; Singh, Ram Sharan
Source:
Biotechnology reports 2019 pp. e00319
ISSN:
2215-017X
Subject:
ethanol production,   etc   ; bioreactors; fermentation; models; temperature;     Show all 5 Subjects
Abstract:
... The state-space model is identified using the identification tool of MATLAB, and the best fit of 99% of measured and simulated data was obtained. Further, state-space model was converted to a transfer function model and finally simplified to an unstable second order time-delay transfer function model. Internal model control based proportional integral derivative (IMC-PID) controller design method ...
DOI:
10.1016/j.btre.2019.e00319