Carbon tests

Table 4. Source References for Activated Carbon Test Procedures and Standards...

Feed residue coke is the small portion of the (non-residue) feed that is directly deposited on the catalyst. This coke comes from the very heavy fraction of the feed and its yield is predicted by the Conradson or Ramsbottom carbon tests. 

Conrad-Limpach-Knorr synthesis, of quinolines, 21 189 Conrad recycling process, 21 455 Conradson carbon test method, 11 705, 721 Consensus materials standards, 15 743 Consent decree protocols, in the United States, 11 692-694 Consent decrees, 11 689-690 Consequence analysis, 21 860-861 Consequence modeling, 13 165-166 Conservation applications, high performance fibers in, 13 398 Conservation of energy, 21 290 Conservation of mass, 11 737, 738-739 Conservation, of resources, 24 164-167 Conservation scientists, 11 398-399 Consistent force field, 16 744 Consolidants, in fine art examination/ conservation, 11 410... 

Several major matrix types are found in marine particles and sediments. Marine organisms surround themselves with tough polymeric organic cell walls and/or with opal or calcium carbonate tests. These contrasting matrices respond differently to various analytical methods. In sediments, the remains of these organisms combine with clay minerals to form a heterogeneous mixture. In this section, the influence of these matrices on analyte quantification are discussed. 

Foraminifera Micrometer-size animals that possess calcium carbonate tests. 

Roth M, Murphy JM, Jr. 1978. Correlation of oxygen demand and total organic carbon test on wastewaters from ammunition plants. Proc Ind Waste Conf 32 674-688. 

The extensive temperature data which still remain to be correlated with char residues, the shape of the burn cavity, and chemical analyses, when combined with data from separate carbonization tests now In progress, are expected to provide Information from which the extent of gasification and the sweep efficiency can be predicted with reasonable accuracy. 

Some carbonation tests have been reported on plain and air-entrained concretes using two aggregate types, where the depth of carbonation on indoor and atmospheric exposure for 5 years have been measured [40]. The results are given in Table 3.24. In all cases, the air-entrained mixes have shown less carbonation than similar controls, suggesting that air-entrained concrete should provide a better reinforcement protection in the long term. 

A wide variety of carbonaceous materials can intercalate or insert lithium reversibly and thus may be candidates for anodes for lithium ion batteries. In recent years, many types of carbons have been tested as alternative anodes for rechargeable lithium batteries, part of which have found use as anodes in practical, commercial lithium ion batteries. The most straightforward way of classifying these electrodes is according to the type of the carbon, which determines their capacity and basic electrochemical behavior. The major types of carbons tested in recent years as anode materials for Li ion batteries are listed below ... 

Colorimetric solutions are used in the preparation of colorimetric standards for certain chemicals and for the carbonization tests with sulfuric acid that are specified in several monographs. Directions for the preparation of the primary colorimetric solutions and Matching Fluids are given under the test for Readily Carbonizable Substances, Appendix IIB. Store the solutions in suitably resistant, tight containers. 

An early detailed work in hot phosphoric acid is that of Kinoshita and Bett49,50 who reported corrosion rates for four different carbons in phosphoric acid at temperatures up to 160 °C. All of the carbons tested showed similar behavior as a function of time. At constant potential the corrosion currents were relatively large but declined rapidly with time. These authors concluded that the rate of oxidation was dependent on the surface micro-structure for each specific carbon sample. Graphitized carbons showed lower specific oxidation rates than ungraphitized carbons. 

Figure 2. Examples of typical calcium carbonate tests which are deposited in pelagic sediments. (1) and (2) are foraminifera (calcite) (3) is a coccolithophore (calcite) (4) and (5) are pteropods (aragonite). Note the difference in size as...

At about 4000 m water depth, carbonate tests are dissolved, because their solubility depends on pressure (this depth in the ocean is called calcite compensation depth, abbreviated CCD). With the dissolution of tests the metals collected before are again liberated and can contribute to the growth of manganese nodules. 

Experiment 148. — Proceed as in Exp. 145, but use potassium carbonate instead of sodium carbonate. Test as in the case of sodium hydroxide. 

---