Extraction of lignin from sugar cane bagasse and Pinus taeda wood chips using ethanol–water mixtures and carbon dioxide at high pressures

This research evaluates the behavior corrosion of galvanized steel (GS) and AISI 1018 carbon steel (CS) embedded in conventional concrete (CC) made with 100% CPC 30R and two binary sustainable concretes (BSC1 and BSC2) made with sugar cane bagasse ash (SCBA) and silica fume (SF), respectively, after 300 days of exposure to 3.5 wt.% MgSO4 solution as aggressive medium. Electrochemical techniques were applied to monitor corrosion potential (Ecorr) according to ASTM C-876-15 and linear polarization resistance (LPR) according to ASTM G59 for determining corrosion current density (icorr). Ecorr and icorr results indicate after more than 300 days of exposure to the sulfate environment (3.5 wt.% MgSO4 solution), that the CS specimens embedded in BSC1 and BSC2 presented greater protection against corrosion in 3.5 wt.% MgSO4 than the specimens embedded in CC. It was also shown that this protection against sulfates is significantly increased when using GS reinforcements. The results indicate a higher resistance to corrosion by exposure to 3.5 wt.% magnesium sulfate two times greater for BSC1 and BSC2 specimens reinforced with GS than the specimens embedding CS. In summary, the combination of binary sustainable concrete with galvanized steel improves durability and lifetime in service, in addition to reducing the environmental impact of the civil engineering structures.

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Multicomponent vapor-liquid equilibria at high pressures: Part I. Experimental study of the nitrogen—oxygen—carbon dioxide system at 0°C

AIChE Journal ◽

10.1002/aic.690110624 ◽

1965 ◽

Vol 11 (6) ◽

pp. 1092-1096 ◽

Cited By ~ 42

Author(s):

N. K. Muirbrook ◽

J. M. Prausnitz

Keyword(s):

Carbon Dioxide ◽

Experimental Study ◽

High Pressures ◽

Vapor Liquid Equilibria ◽

Vapor Liquid

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Activated Carbons from Sugar Cane Bagasse

Industrial & Engineering Chemistry Product Research and Development ◽

10.1021/i360040a018 ◽

1971 ◽

Vol 10 (4) ◽

pp. 429-432 ◽

Cited By ~ 11

Author(s):

Max Ruiz ◽

Carlos Rolz

Keyword(s):

Sugar Cane ◽

Activated Carbons ◽

Sugar Cane Bagasse

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Gaseous combustion at high pressures. —Part X. The co-volume corrections, maximum temperatures and dissociation of steam and carbon dioxide in explosions

Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character ◽

10.1098/rspa.1928.0105 ◽

1928 ◽

Vol 119 (782) ◽

pp. 464-480

Keyword(s):

Carbon Dioxide ◽

High Pressure ◽

Internal Energy ◽

High Temperatures ◽

High Pressures ◽

Internal Combustion ◽

Systematic Survey ◽

Explosion Method ◽

Maximum Temperatures ◽

Very High

During the researches upon high-pressure explosions of carbonic oxide-air, hydrogen-air, etc., mixtures, which have been described in the previous papers of this series, a mass of data has been accumulated relating to the influence of density and temperature upon the internal energy of gases and the dissociation of steam and carbon dioxide. Some time ago, at Prof. Bone’s request, the author undertook a systematic survey of the data in question, and the present paper summarises some of the principal results thereof, which it is hoped will throw light upon problems interesting alike to chemists, physicists and internal-combustion engineers. The explosion method affords the only means known at present of determining the internal energies of gases at very high temperatures, and it has been used for this purpose for upwards of 50 years. Although by no means without difficulties, arising from uncertainties of some of the assumptions upon which it is based, yet, for want of a better, its results have been generally accepted as being at least provisionally valuable. Amongst the more recent investigations which have attracted attention in this connection should be mentioned those of Pier, Bjerrum, Siegel and Fenning, all of whom worked at low or medium pressures.

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