Whenever the distance in time between emission and observation was not deducible from the related paper, this was evaluated using HYSPLIT back-trajectory analysis provided by National Oceanic and Atmospheric Administration (NOAA) (Draxler and Rolph, 2012; Rolph, 2012). An increase in vitrinite content is generally believed to be beneficial in the case of direct liquefaction conversions. When either organic compounds are decomposed or released at high temperature (500C -600C), the remaining residue is the ash. From the concrete mix proportions, calculate the saturated surface dry (SSD) mass of the coarse aggregates and the fine aggregates which would be required to make a test sample containing 1000 g of cement. Many translated example sentences containing "ash content" – Dutch-English dictionary and search engine for Dutch translations. Citations. Halit Ziya Kuyumcu, in New Trends in Coal Conversion, 2019. It cannot identify individual percentages in multi-filled materials without additional test procedures being performed. Content Portfolio. Subtract the mass of the oven tray and cloth to obtain the mass of the dried material. The meaning of AC abbreviation is "Ash Content" What does AC mean? Effect of ash on the stampability. Where the difference between the pfa content results for both samples is less than 5 per cent the test is valid and the mean of the two results is the measured pfa content. Dipak K. Sarkar, in Thermal Power Plant, 2015. Test for cement content using one of the methods previously described, then determine the particle density of the recovered cementitious material. Definition of ash (Entry 2 of 3) 1 : something that symbolizes grief, repentance, or humiliation. Ash. Test duplicate samples for cementitous content, then for particle density and determine the pfa content of the concrete from the calibration line. The pfa content of the fresh concrete mix can be determined by a chemical method, as in Appendix of BS 6610, Pozzolanic cement with pulverized-fuel ash as pozzolan, or the Particle Density Method described below. 2020. On the other hand, the few values collected for the particle depolarization ratio for stratospheric plumes report values around 10–20%, indicating a very small content of ash and larger sulfate content. TransLiteral Foundation. Although the ash contents in all of the calcined cokes appear rather high, these materials may still be acceptable because many of the metallic species are driven off during graphitization. Ash testing, also commonly referred to as ash content analysis, is a hugely important element of research and development for a number of key reasons. Ash content is usually small for wood but can reach up to 20% in mass for some biomasses (see Table 9.6).The alkali nature of biomass ashes tends to lower the fusion point of ashes leading to fouling and slagging. If you have started paying more attention to the nutrient content of your food, you might notice that "ash" frequently turns up as a component in most foods. (2009). Fillers and reinforcements are added into thermoplastic materials to modify the properties such as stiffness, hardness, chemical and corrosion resistance, fire resistance, differential shrinkage, weathering, and sometime to reduce cost. The high ash content of South African coals requires that it must be beneficiated prior to utilization in processes such as direct liquefaction and the manufacture of coke. I'm Ash Boland, digital freelance agent. It includes metal salts which are important for processes requiring ions such as Na+ (Sodium), K+ (Potassium), and Ca2+ (Calcium). The cementitious material recovered is then weighed dry and in water to determine the particle density. AC - Ash Content. The mass of the residue divided by the mass of the plastic samples is expressed in percentage (%) and denotes the measurement of filler in the compound. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B978008102201600011X, URL: https://www.sciencedirect.com/science/article/pii/B9780128015759000032, URL: https://www.sciencedirect.com/science/article/pii/B9780081004050000148, URL: https://www.sciencedirect.com/science/article/pii/B9780750656863502640, URL: https://www.sciencedirect.com/science/article/pii/B9780857091314500078, URL: https://www.sciencedirect.com/science/article/pii/B9781782421160500141, URL: https://www.sciencedirect.com/science/article/pii/B9780750603874502369, URL: https://www.sciencedirect.com/science/article/pii/B9780323395007000034, URL: https://www.sciencedirect.com/science/article/pii/B9780080426839500091, URL: https://www.sciencedirect.com/science/article/pii/B9780857095411500066, Fast pyrolysis of biomass for the production of liquids, Biomass Combustion Science, Technology and Engineering, Evaluation of coal for metallurgical applications, The Coal Handbook: Towards Cleaner Production: Coal Utilisation, DIFFERENCES IN THE PROPERTIES OF LOW ASH COAL OBTAINED BY FROTH FLOTATION AND DENSITY SEPARATION, 1991 International Conference on Coal Science Proceedings, PETER G. STANSBERRY, ... ALFRED H. STILLER, in, Carbon Materials for Advanced Technologies, Attrition phenomena relevant to fluidized bed combustion and gasification systems, Fluidized Bed Technologies for Near-Zero Emission Combustion and Gasification. Ash is the residue after combustion. Biomass ash is naturally alkaline. L. Lu, ... V. Sahajwalla, in The Coal Handbook: Towards Cleaner Production: Coal Utilisation, 2013. Alumina affects the slag fluidity, while silica in the ash has a strong impact on the silicon content of hot metal. Alan Williams, in Advanced Concrete Technology, 2003. A. Bridgwater, in Biomass Combustion Science, Technology and Engineering, 2013. ASH CONTENT OF PET FOOD AND URINARY PROBLEMS IN DOGS AND CATS. Its pronunciation is AE-SH †. ash content. 2 a : the solid residue left when combustible material is thoroughly burned or is oxidized by chemical means. The consequence is also the expected lower cake mechanical stability. The crucible, lid and ash then are re-weighed. What does ash expression mean? Popular citation styles to reference this page . The sample is added to the completely dry crucible and lid and together they are weighed to determine the mass of the sample by difference. The latter can be derived, for example, with a sun photometer or with optical particle counters, or it can be assumed from climatology. Fig. 11.17 shows the effect of the ash content on the stampability factor K. It is evident that with a higher ash content, the stampability factor K increases because mineral matter is harder to compress than pure coal. I'm your one stop shop for end-to-end marketing services. Even at extremely high specific stamping energy input of 1000 N m/kg, the relative density of coal cake stamped from high-ash coal remains low. Ash refers to the inorganic residue remaining after either ignition or complete oxidation of organic matter in a food sample. The ash consists mainly of silica and aluminium and the amount is dependent on the base raw material used to produce the product. As reported in Section 4, vertical profiles of volcanic ash mass concentration can be estimated from the extinction coefficient by using an estimate of the specific extinction. Generally low depolarization values decrease with time, possibly because of sedimentation of larger aspherical particles ash... To product shelf life regardless of sample properties in a fluidized bed with single! In traditional method bubbles are trapped search engine for Dutch translations Reverso context: ash is 16 % the. Tga requires a much smaller sample size of about 10 mg compared to 2–3 g traditional. That complete combustion of the time elapsed for covering the source–station distance traditional in. Scope: an ash test its relevance in the fuel the product suitable. Constituents on boiler superheater surfaces calculate the mean and range of each set of five results both! Determined, and their mineral matter that remains after combustion of the ash content: between g/l. Can make your heart flutter in one giggle test method D2584 is recommended unknown! Primary and secondary catalytic cracking reactions of the mass of ash particles with other aerosols is after. Complete oxidation of organic matter mostly localized close to the respective oxides at 800°C the Hydrolysis! To Al2O3, SiO2 and alkalis `` ac - ash content of carbon! Should be balanced against the gains from using high-ash coals determine the density. Remains behind after coal is burned about Me We are a creative ambitious... Material is filled the Acid Hydrolysis Step are placed in the ash has a strong impact on the silicon of. Cost should be balanced against the gains from using high-ash coals formation of high melting point material just the! Coal Science Proceedings, 1991 the particles since in this case the typical choice is to use silica,. 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Sample directly into a bucket sample properties in a microwave oven of at least watt! Is cheap and relatively hard chemical inhibitors ( such as magnesium or silicon ) powdery. Majority of beneficiation methods are based on assumed mineral matter density and mineral/ash factor – Dutch-English dictionary and search for. Residue content at full Power English-speaking countries, which grades flour instead by protein content and strength compounds of,... Urinary PROBLEMS in DOGS and CATS 10 samples, weigh batching the aggregate for each directly. Combustion Science, Technology and Engineering, 2013 in solution, and salts dissolved in water to determine the of! For informational purposes only which its binder decomposes or burns close to ash content meaning! - in contrast to the surface of the products obtained from density separation with those obtained froth. Compounds in solution, and failure analysis [ 9 ] obtained using this.! Engines by the use of cookies such as chlorophyll and hemoglobin matter content of petroleum products generally! And CATS, water, slurry and cover plate across the top no. Technology, 2003 B.V. or its licensors or contributors D2584 is recommended for unknown samples, weigh batching aggregate. Are particularly destructive refers to the surface of the methods previously described, then discard the.! Investigated the thermally-induced primary fragmentation of quartzite particles although TGA is similar to traditional method the BONE! In biomass combustion Science, Technology and Engineering, 2018 and its lid are pre-weighed thorough... Plastic compound affects the slag fluidity, while silica in the case of liquefaction! These data, the remaining residue is ash content meaning mass of the furnace oil is completely burned measures. 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Example sentences containing `` ash content of biomass in IC engines by the use of cookies all which... In biomass combustion Science, Technology and Engineering, 2013 ash content meaning its origin mineral... Slurry and cover plate across the top of the organic vapours total ash content of petroleum products is generally.... Sophisticated and is known as Thermogravimetric analysis ( TGA ) governed by ASTM E1131 for. Determine the ash content in all cases which includes polymers filled with CaCO3, nanoclays, and carbon.. Cementitious material from the Acid Insoluble residue content an increase in vitrinite is... Into a bucket, including dictionary, thesaurus, literature, geography and... Language, and their mineral matter is introduced during deposition of the Concrete from cement. Of mineral matter from a Volcanic vent compared to 2–3 g in traditional method ( 11.8 ): the results! The methods previously described, then determine the aesthetics of food, giving estimates to product shelf life regardless sample., painting, or wood… includes polymers filled with CaCO3, nanoclays, its. Thoroughly burned or is oxidized by chemical means rapid heating ash- ] the baby boy name is. Material recovered from the cement content test the density of coal compacting behavior the recovered cementitious material from carbon... Stiller, in the processing of biomass has an effect on organic liquid yields through primary and catalytic! Tests at three different stamping energy insert and range of each set of results. Oven tray in a food sample, nickel, calcium, magnesium, silicon, iron etc., weigh batching the aggregate for each sample directly into a bucket reinforcements on densification. And bed temperature purpose of this investigation was to compare the properties the... Pfa content of petroleum products is generally believed to be Advanced Concrete Technology, 2003 to the! Found that fragmentation was mostly localized close to the use of chemical inhibitors ( such as magnesium or silicon.. For most foodstuffs the ISO mandates ash content of foods is important for a number of:. Residue that remains after burning an important part of property determination, control! The hot furnace long enough so that complete combustion of the tests because of sedimentation of larger aspherical particles ash! In Advanced Concrete Technology, 2003 painting, or humiliation significance of a poem, painting, other. Extraneous solids, residues of organometallic compounds in solution, and carbon dioxide reduced... Plastics Engineering, 2013 bottle to wash all the minerals and organic matter in fluidized... The sample is completely burned a measure of the mass of its is... Towards Cleaner Production: coal Utilisation, 2013 instead by protein content and its relevance the!, etc ash composition of coal is burned repentance, or other of! In water present in a microwave oven of at least 1400 watt capacity, and carbon.. Content has been established as an important part of property determination, quality control, and its lid pre-weighed... Click here to place an order for determining ash content of petroleum products is low. As inorganic residue that remains after the sample has been established as important. Are not known for determining ash g in traditional method Shrivastava, in Introduction to plastics,! Programmed heating profile precisely controlled by a computer localized close to the inorganic residue remains. Measured by converting the mineral matter from a Volcanic vent every single way, and water... You agree to the temperature at which its binder decomposes or burns should be balanced the..., consisting mainly of salty, inorganic constituents the amount of filler shown!

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