Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature, and reaction time on the HA yield were investigated. The physicochemical characterization of the products was performed, and the reaction mechanism was explored. Raw coal, HA, and residual coal were
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Nitro humic acid was extracted from lignite of Guizhou Anshun, which production condition and process were studied. The results show that the optimum conditions of dry process are concentration of nitric acid of 40%, reaction temperature of 95°C, reaction time of 5 min.
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US3398186A
Lignite forms from peat that has not experienced deep burial and heating. It forms at temperatures below 100 °C (212 °F), primarily by biochemical degradation. This includes humification, in which microorganisms extract hydrocarbons from the peat and humic acids are formed. The humic acids make the environment more acidic, which slows the
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A chemometric study: Automated flow injection analysis method for the quantitative determination of humic acid in Ilgın lignite. Arabian Journal of Chemistry, 2014. Ismail Tarhan . Download PDF. Download Full PDF Package. This paper. A short summary of t
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A membrane processing system is developed for ultrafiltration of lignite-derived alkaline extracts. • The highest purity (97%) and the lowest ash content (0.25%) were obtained for the purified humic acid.
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Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature
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Abstract At present, non-fuel utilization as alternative chemical feedstocks becomes very important and significant for the efficient conversion of lignite. To reduce CO2 production, an oxy-cracking technique in weak alkaline aqueous was conducted to selectively depolymerize Xilinguole lignite (XL) into humic acid (HA) under mild condition in this paper. The results indicated that XL has high
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Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature, and reaction time on the HA yield were investigated. The physicochemical characterization of the products was performed, and the reaction mechanism was explored. Raw coal, HA, and residual coal were
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Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature, and reaction time on the HA yield were investigated. The physicochemical characterization of the products was performed, and the reaction mechanism was explored. Raw coal, HA, and residual coal were
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Humic acid
production of humic acids in South Africa is a possibility. Nevertheless, there is still more that needs to be done to investigate the cost effectiveness of this production prior its implementation. HAp method was most suitable for the production of humi
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A chemometric study: Automated flow injection analysis method for the quantitative determination of humic acid in Ilgın lignite. Arabian Journal of Chemistry, 2014. Ismail Tarhan . Download PDF. Download Full PDF Package. This paper. A short summary of t
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Nitro humic acid was extracted from lignite of Guizhou Anshun, which production condition and process were studied. The results show that the optimum conditions of dry process are concentration of nitric acid of 40%, reaction temperature of 95°C, reaction time of 5 min.
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Extraction of Humic Acid from Lignite Coals us ing Stirred Tank Reactors (STRs): Assess ment of Process Parameters and Final Product Charateriz ation EHSAN SARLAKI 1 , MOHAMMAD SOKHANDAN TOOMAJ 2
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Potassium Humate Manufacturing process. 1.raw material. 1.1 Select leonardite or lignite. 1.2Natural oxidization for more than 3month. 1.3Crushing into fine powder. 2.Chemical reaction. 2.1Supply raw material to reaction tank. 2.2Treat humic acid raw material with alkaline (KOH) at certain ratio under high pressure and temperature,complete
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The aim of the research was to determine efficiency of humic acids extraction process, using different kinds and fineness of lignite. Stronger fines size reduction provides growth of active surface subjected to extractant treatment and better porosity of mass subjected to extraction, so as the lignite fineness decreasing the increase of efficiency of humic acids production is expected. Finding
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The influences of nitrate concentrations, acid-coal proportion, oxidized temperature, oxidation time, extraction liquid concentration, liquid-solid ratio, extraction temperature and extraction time etc. on the process of extracting humic acid were examined. The results indicate the optimal processing condition can achieved when using sodium pyrophosphate and sodium hydroxide solution as the
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Lignite forms from peat that has not experienced deep burial and heating. It forms at temperatures below 100 °C (212 °F), primarily by biochemical degradation. This includes humification, in which microorganisms extract hydrocarbons from the peat and humic acids are formed. The humic acids make the environment more acidic, which slows the
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An oxidation product of lignite: a young brown coal with low energy content Peat Leonardite Lignite Coal Leonardite is typically made up of 45-80% Humic Substances. Known as the most EFFICIENT/ECONOMICAL source of Humic Acid. Carbon is getting Reduced Ca
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Potassium Humate Manufacturing process. 1.raw material. 1.1 Select leonardite or lignite. 1.2Natural oxidization for more than 3month. 1.3Crushing into fine powder. 2.Chemical reaction. 2.1Supply raw material to reaction tank. 2.2Treat humic acid raw material with alkaline (KOH) at certain ratio under high pressure and temperature,complete
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Extraction of humic acid from lignite coals using stirred tank reactors (STRs): assessment of process parameters and final product charaterization Iran. J. Soil Water Res. , 50 ( 2019 ) , pp. 1111
Abstract At present, non-fuel utilization as alternative chemical feedstocks becomes very important and significant for the efficient conversion of lignite. To reduce CO2 production, an oxy-cracking technique in weak alkaline aqueous was conducted to selectively depolymerize Xilinguole lignite (XL) into humic acid (HA) under mild condition in this paper. The results indicated that XL has high
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Extraction of humic acid from lignite coals using stirred tank reactors (STRs): assessment of process parameters and final product charaterization Iran. J. Soil Water Res. , 50 ( 2019 ) , pp. 1111
The cleaner production of high purity and safe humic acid (HA) with very low concentration of heavy metals leads to achieve a final product with potential economic value in agriculture, biomedicine, environment and so on. This can be obtained by environmental-friendly separation of low molecular weight fulvates and inorganic elements present in humic alkaline solutions. The aim of this study
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Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature, and reaction time on the HA yield were investigated. The physicochemical characterization of the products was performed, and the reaction mechanism was explored. Raw coal, HA, and residual coal were
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Technical Evaluation Report Oxidized Lignite —Humic Acid Derivatives Crops July 7, 2012 Page 3 of 19 84 1997) and used as folk medicine (Cromarty, 2004). Humic acid derivatives are also used in mud baths, 85 drilling muds, and pigments for inks (O’Neill, 2006). 86 87
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The positive effect of humic acids on the growth of plant roots is well known, however, the mechanisms and role of their physical structure in these processes have not been fully explained yet. In this work, South-Moravian lignite was oxidized by means of nitric acid and hydrogen peroxide to produce a set of regenerated humic acids. The
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Nitro humic acid was extracted from lignite of Guizhou Anshun, which production condition and process were studied. The results show that the optimum conditions of dry process are concentration of nitric acid of 40%, reaction temperature of 95°C, reaction time of 5 min.
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Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature
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Oxidized Lignite/Humic Acid . August 15, 2012 . Introduction: A petition was submitted requesting the addition of “Humic Acid Derivatives – Hydrogen Peroxide extracted”, which is also known as Oxidized Lignite. Background: The Crops Subcommittee encountered considerable confusion over what this material actually
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Humic acid (HA) was extracted by a hydrothermal method from Huolinhe lignite from Inner Mongolia. The effects of the alkali-to-carbon mass ratio, water-to-coal mass ratio, reaction temperature
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1. The production process of sodium humate. The sodium humate as feed additive can be mainly divided into powder, flake, spherical and irregular particles in appearance. Sodium humate powder is mainly produced by dry method (solid→solid). Due to the different sources of humic acid, the finished products produced are slightly different in color.
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The influences of nitrate concentrations, acid-coal proportion, oxidized temperature, oxidation time, extraction liquid concentration, liquid-solid ratio, extraction temperature and extraction time etc. on the process of extracting humic acid were examined. The results indicate the optimal processing condition can achieved when using sodium pyrophosphate and sodium hydroxide solution as the
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WhatsAPP خدمة 24 ساعة عبر الإنترنت
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