proximate analysis


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proximate analysis

[′präk·sə·mət ə′nal·ə·səs]
(chemical engineering)
A technique that separates and identifies categories of compounds in a mixture; reported are moisture and ash content, the extracts of the mixture made with alcohol, petroleum ether, water, hydrochloric acid and resins, starches, reducing sugars, proteins, fats, esters, free acids, and so on; this type of analysis of solid fuels allows a prediction to be made as to how the fuel will behave in a furnace.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Distillers' dried grains (IFN 5-28-236) Proximate analysis, percent as fed basis * Crude protein: 27.0 * Crude fat: 8.0 * Crude fiber: 9.1 Major feed applications Coproducts of the distilling industries are valuable animal feedstuffs.
American Society for Testing Material (ASTM), Standard Practice for Proximate Analysis of Coal and Coke, ASTM Standard D3172-13, (2013).
The proximate analysis showed that the seaweed used in the study had comparable nutritional content to that of literature with lower amounts of crude protein and fat content.
The proximate analysis (Table 2) showed little increase in the protein contents, which could be attributed to the fact that steeping could affect the total dry matter contents, hence increased protein content may be projected.
Proximate analysis was done to determine the organic waste composition in terms of moisture, ash and energy content.
The proximate analysis result in Table 1 shows some nutrition components from abalone food, i.e., Water, Ash, Protein, Crude Fibre, and Lipid.
Fish that fed on the same diet were pooled and then three individuals were randomly sampled for whole body proximate analysis, and another three were sacrificed for the assessment of hepatosomatic index (HSI) and viscerosomatic index (VSI).
Table 3: Effect of different bio-regulators on proximate analysis of cowpea grain (data averaged over two years)
Effect of retorting temperature on proximate and ultimate analysis of semicokes Retorting Proximate analysis, wt% temperature, [M.sub.ar] [V.sub.ar] [A.sub.ar] [degrees]C Oil shale 11.54 36.21 48.23 430 0.91 22.38 67.13 460 0.88 17.28 72.89 490 1.01 15.40 74.16 520 0.21 16.16 73.79 Retorting Proximate analysis, wt% Ultimate analysis, wt% temperature, [FC.sub.ar] [Q.sub.ad.net] [C.sub.ar] [H.sub.ar] [degrees]C /kJ/kg Oil shale 4.02 11076.07 27.33 3.59 430 9.58 8277.84 22.43 1.71 460 8.95 5894.86 18.86 1.16 490 9.43 5831.71 17.37 0.90 520 9.84 5052.19 17.88 0.88 Retorting Ultimate analysis, wt% temperature, [O.sub.ar] [N.sub.ar] [S.sub.ar] [degrees]C Oil shale 7.90 0.57 0.84 430 6.03 0.71 1.08 460 4.48 0.78 0.95 490 4.90 0.71 0.95 520 5.46 0.70 1.08
The readingsobtained in proximate analysis were also confirmed by the ultimate analysis where high elemental carbon presence was found in the barley SG sample at 520 oC and thus this sample gave Higher Heating Value (HHV) of 21.86 MJ/Kg on Dry Ash Free (DAF) basis.Consideration of product yields (Fig.
Ultimate and proximate analysis of these two types of coal were performed by a Perkin-Elmer analyser mod.