III.Ash content It was determined by weighing one grams of finely ground, dried samples into a pre-ignited and previously weighed ceramic crucible, placed in a muffle furnace and ignited for 2 hours at 750 0C. Then, the crucible was then taken out, cooled in desiccators and weighed. Percentage of ash was to be determined by using
The next day, the crucibles were cooled to room temperature in a desiccant chamber and weighed to determine moisture content. Ash determination was performed using one of two methods (both described in the LAP); precombustion of oven-dried algal material over a Bunsen burner followed by placement in a muffle furnace (575 °C) until constant
In another embodiment, the formulation with volcanic ash has a negligible difference in the moisture expansion of the final product whereby the product either maintains or increases moisture expansion by less than about 20% as compared to a building product made from an equivalent formulation without volcanic ash. For the degree of density
Paul Ragogna in the Department of Chemistry for use of the thermogravimetric analyzer. As well, I would like to thank Kevin Jordan (Earth Sciences) and Holly Sanderson (E&S) for their frequent academic guidance over the course of my degree. Separate thanks to all the wonderful friends I've made while attending Western University for
The ash was digested with aqua-regia, the filtrate was topped to 100 ml and the gold concentration was 840 g per tonne of ash as measured by a Perkin-Elmer Atomic Absorption Spectrophotometer (Model 3300). The grit content of the waste activated carbon was determined by ashing a sample in a muffle furnace at 750 °C in air.
D1582 Standard Test Method for Nonvolatile Content of Liquid Phenol, Resorcinol, and Melamine Adhesives D1583 Standard Test Method for Hydrogen Ion Concentration of Dry Adhesive Films D1585 Standard Test Methods for Fatty Acids Content of Pine Chemicals, Including Rosin, Tall Oil, and Related Products
B973 Standard Specification for Tin-Coated Braid and Ribbon Flat Copper Wire intended for use in Electronic Application. B974/B974M Standard Specification for Free-Cutting Bismuth Brass Rod, Bar and Wire. B975 Standard Test Method for Measurement of Internal Stress of Metallic Coatings by Split Strip Evaluation (Deposit Stress Analyzer Method)
The volatile matters were analyzed at 900 C after 6 min of combustion in a muffle furnace. The fixed carbon content in the biochar was calculated with Eq. 2, (2) The carbon (C), H, N, sulfur (S), and O contents were determined by an element analyzer (EA3000, EuroVector, Milan, Italy) viacombustion at 980 C using the CHNS and O methods.
Sorption of Atrazine in Tropical Soil by Biochar Prepared from Cassava Waste Hui Deng, a, b Huamei Yu, c Miao Chen, d and Chengjun Ge a,b, * Biochar (BC) is a carbonaceous and porous product generated from the incomplete combustion of biomass and has been recognized as an efficient adsorbent.
As CFs cannot be dissolved directly, they must be burned into ashes before dissolution. First, a quartz crucible with about 5 g of CFs was put into a muffle furnace with accuracy of ±10°C, and the samples were then calcined at 900°C for 10 h in static air to obtain ashes.
Ash content (%) = (weight of ash/dry weight of biochar) × 100 (1) The pH values of biochars were determined using glass electrode method with the biochar-to-water ratio (mass ratio) of 1:20. The contents of C, H, N, and S were measured by Varion EL analyzer, and the O content was estimated by mass difference.
2014520The weight of the crucible with lignin was recorded (W 2), and the sample was ashed in muffle furnace for 4 h at 575°C. Finally, the weight of the crucible with ash content was recorded (W 3). Acid insoluble lignin (AIL) content of the manure fiber was calculated by the following equation:
The sample is manually homogenized, dried at 60 degrees Celsius, sieved through a 63 um (230 mesh) sieve, and a representative subsample of the dry material is weighed. The sample is then digested at 95 degrees Celsius for 2 hours by block digester using concentrated nitric and hydrochloric acids.
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muffle furnace and ignited at a sustained temperature of 5500C for about two hours. The time required to accomplish complete ashing depended upon sample size, but two hours was usually sufficient. After removal and cooling, the sample crucibles were reweighed again. The ash content of each soil was determined from the weight loss from the oven