Inorganic content

As a first step in the selection process, the applicability of the various solidification/ stabilization processes for specific contaminants can be determined using Table 12. Since these waste treatment systems vary widely in their applicability, cost, and pretreatment requirements, many are limited as to the types of waste that can be economically processed. Waste characteristics such as organic content, inorganic content, viscosity and... 

Analyses of the Inorganic Content of Cotton Dust A Review... 

Studies of the inorganics in cotton dust have incorporated the use of a wide variety of techniques. These include X-ray fluorescence spectroscopy, atomic absorption spectroscopy, electron microscopy, energy dispersive analysis of X-rays, X-ray diffraction, atomic absorption spectroscopy, neutron activation analysis and petrographic microscopy. It is necessary to use a wide array of techniques since no single technique will permit the measurement of all trace elements. Steindard chemical techniques to determine the ash content of samples and of various extracts have also been used. In most of these studies the ash fraction has been considered to be a reasonably accurate measure of the inorganic content. 

Investigations reported in the literature of the inorganic content of cotton plant parts, textile mill dusts, cotton gin dusts, oil mill dusts, and solids from card room humidifier water have been reviewed. 

Inorganic analysis was conducted in conjunction with the mineral analysis. Particles analyzed previously for mineral content were analyzed for their inorganic content, and an overall analysis conducted. The resultant EDS spectra output was fed into a spreadsheet software package which was adapted by the authors to allow the calculation of a quantitative elemental analysis. 

The arsenic sorption capacities of activated carbons may significantly increase because of natural impurities in the source materials of the carbons. For example, activated carbons produced from lignites and subbituminous coals usually contain more inorganic materials than those made from bituminous coals. The higher inorganic contents allow activated carbons produced from lignite and subbituminous coals to more effectively remove As(V) from water than carbons made from bituminous specimens (Leist, Casey and Caridi, 2000, 130). 

Figure 9.1 Example of typical grain-size spectra of suspended particulate matter from coastal waters with high inorganic content. The solid curves show the natural flocculated particle distributions and the broken curves show the deflocculated inorganic grains. From Yariv and Cross [49], Copyright 1979, Springer-Verlag Berlin.

Very little is currently known about the formation and nature of organic discharge residue as the main thrust, until relatively recently, has been directed toward the inorganic content of discharge residue. 

Raymond R., Jr., Bish D. L., and Cohen A. D. (1990) Inorganic contents of peats. In Mineral Matter and Ash Deposition from Coal, Engineering Foundation Conference (eds. R. W. Breyers and K. S. Vorres), pp. 23-37. 

The residual char was weighted and analyzed for determination of inorganic content. 0.39 kg char per 1 kg straw was obtained at the end of the test. The inorganic content in the residual char is given in Table 2. 

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