Results 261 to 270 of about 77,020 (294)
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Journal of Chromatography A, 1999
An ion chromatographic method for simultaneous determination of formate, hydroxyethyl sulfonate (HES), hydroxyethyl thiosulfate (HET), and coexisting anions in the industrial waste liquid of sodium hydrosulfite production was developed. The mixture of 1.6 mmol/l of phthalic acid and 1.2 mmol/l tri-(hydroxyethyl) aminomethane was used as eluent.
M, Ding, L, Feng
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An ion chromatographic method for simultaneous determination of formate, hydroxyethyl sulfonate (HES), hydroxyethyl thiosulfate (HET), and coexisting anions in the industrial waste liquid of sodium hydrosulfite production was developed. The mixture of 1.6 mmol/l of phthalic acid and 1.2 mmol/l tri-(hydroxyethyl) aminomethane was used as eluent.
M, Ding, L, Feng
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Ecology and Industry of Russia, 2022
A solution of the ecological problem of processing waste from metallurgical production is proposed. The results of research on the extraction of sodium and potassium chlorides from foundry slags are shown. A technological scheme based on leaching in hot aqueous solutions with subsequent evaporation is presented.
T.R. Gilmanshina +5 more
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A solution of the ecological problem of processing waste from metallurgical production is proposed. The results of research on the extraction of sodium and potassium chlorides from foundry slags are shown. A technological scheme based on leaching in hot aqueous solutions with subsequent evaporation is presented.
T.R. Gilmanshina +5 more
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The influence of sodium on biohydrogen production from food waste by anaerobic fermentation
Journal of Material Cycles and Waste Management, 2009Anaerobic fermentation of food waste for hydrogen production was performed in serum bottles with various linear alkylbenzene sulfonate (LAS) dosages (7.1–21.4 g/l) and sodium concentrations (5.03–28.7 g/l). LAS can effectively inhibit the activity of hydrogen-consuming bacteria, and the maximum hydrogen yield of 109.2 ml/g volatile solid (VS) was ...
Xianyan Cao, Youcai Zhao
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Waste Management, 2000
This article presents a mathematical model which describes the sodium chromate (VI) production process with the use of chromic waste as a substitution of natural raw materials. This model is a function of selected process parameters common for all of the examined alternatives and based on equations of material balance.
Barbara Walawska, Zygmunt Kowalski
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This article presents a mathematical model which describes the sodium chromate (VI) production process with the use of chromic waste as a substitution of natural raw materials. This model is a function of selected process parameters common for all of the examined alternatives and based on equations of material balance.
Barbara Walawska, Zygmunt Kowalski
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Production of Chemical-Precipited Chalk from Waste and Semi-Products of Sodium Salt Production
Ecology and Industry of RussiaThe conditions of the method for processing distiller's liquid using technical sodium bicarbonate and mother liquor from the purified sodium bicarbonate workshop were studied. The optimal parameters for carrying out the reactions were determined.
V. M. Ilyin +2 more
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Conversion of waste tires to liquid products via sodium carbonate catalytic pyrolysis
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2016ABSTRACTThis study deals with the pyrolysis of waste tires supplied from the transport industry. The base material of tire is latex, which is derived from natural rubber trees. Nowadays rubber (Hevea brasiliensis) is a fast-growing tropical tree crop, which is being cultivated for latex and ultimately for tire production.
Ayhan Demirbas +2 more
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Biomass Conversion and Biorefinery, 2020
Tobacco product waste (TPW) was considered as a novel and sustainable feedstock for second-generation ethanol production. TPW with over ~ 44% cellulose content was efficiently pretreated using concentrated (10% W/V) sodium hydroxide (SH) solution at different temperatures (0, 25, and 80 °C) and retention times (3 and 6 h).
Sare Sarbishei +2 more
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Tobacco product waste (TPW) was considered as a novel and sustainable feedstock for second-generation ethanol production. TPW with over ~ 44% cellulose content was efficiently pretreated using concentrated (10% W/V) sodium hydroxide (SH) solution at different temperatures (0, 25, and 80 °C) and retention times (3 and 6 h).
Sare Sarbishei +2 more
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Enhancing hydrogen production from biomass pyrolysis by dental-wastes-derived sodium zirconate
International Journal of Hydrogen Energy, 2019Abstract Sodium zirconate was synthesized via the solid-phase reaction from dental wastes with sodium carbonate. The dental-wastes-derived sodium zirconate (DW-SZ) dramatically enhanced hydrogen (H2) production during biomass pyrolysis due to the presence of alkali metal (Na) and in-situ carbon dioxide (CO2) capture.
Fan Wang +6 more
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Sodium polyacrylate inhibits fermentative hydrogen production from waste diaper‐like material
Journal of Chemical Technology & Biotechnology, 2019AbstractBACKGROUNDThe inhibitory effect of a moisture‐absorbent sodium polyacrylate (SPA), that is commonly used in disposable diapers, on the bio‐hydrogen (H2) generation from waste diaper‐like material (WDM) was assessed in dark fermentation studies.
Perla X Sotelo‐Navarro +3 more
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The Recycling of Sodium Acetate from Waste Liquid of Dially-Alcohol-Ketone-Acetate Production
Advanced Materials Research, 2013Sodium acetate has been separated and recycled in waste liquid from production by the process of precipitation, filtration, washing, concentration, crystallization, recrystallization and drying. The recycling of sodium acetate can be completely achieved by reuse hot water and liquor produced during concentrated and crystallization process respectively.
Dan Liu +4 more
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