Methods of chemical analysis for ionic constituents in synfuel wastewaters. Final report

Technical Report · Mon Sep 24 04:00:00 EDT 1984

OSTI ID:5946737

Wallace, J R; Alden, L

The orginal thrust of this effort was towards improving ion chromatographic methods to detect all major ions. This technique was developed for the determination of chloride, nitrite, sulfite, phosphate, sulfate, nitrate, thiosulfate, and thiocyanate in a single run. A qualitative indication of total organic acids is also obtained. Sodium, ammoniacal-N, and K were determined separately by ion chromatography. Because the chloride peak occurred in a crowded portion of the ion chromatogram, an independent method was developed for chloride involving a digestion and titration. Measurements for pH and electrical conductivity were then made in order to check the accuracy of these individual measurements. However, it soon became clear that modified procedures for these measurements had to be developed in order to compensate for the high ionic strength of the synfuel samples. A computer program was developed to check the accuracy and completeness of the analyses by calculating ion balances, electrical conductivity, and total sulfur based on the individual determinations. Application of this program to a set of synfuel wastewaters indicated an acceptable agreement for most samples. However, it also became apparent that for some waters a major category of negative ions was missing, and for other samples the individual sulfur components did not account for the total sulfur found. For this reason additional efforts were directed towards determining the missing components. A gas chromatographic procedure involving a bonded-phase, carbowax capillary column was developed for the light organic acids. Efforts to develop a practical method for polysulfides, which were suspected as the missing sulfur component, were largely unsuccessful. 33 references, 14 figures, 12 tables.

• Research Organization: Denver Research Inst., CO (USA)
• DOE Contract Number: AS20-82LC10934
• OSTI ID: 5946737
• Report Number(s): DOE/LC/10934-1697; ON: DE85003285
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ACCURACY
ALKALI METALS
AMMONIUM COMPOUNDS
ANIONS
ANTITHYROID DRUGS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBONIC ACID DERIVATIVES
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE
CHLORINE COMPOUNDS
CHROMATOGRAPHY
COAL GASIFICATION
COMPUTER CALCULATIONS
DATA
DECOMPOSITION
DRUGS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
GASIFICATION
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HORMONE ANTAGONISTS
HYDROGEN COMPOUNDS
INFORMATION
ION EXCHANGE CHROMATOGRAPHY
IONS
LIQUID WASTES
MATERIALS
METALS
NITRATES
NITRITES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
NUMERICAL DATA
OIL SHALES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM
QUALITATIVE CHEMICAL ANALYSIS
QUANTITATIVE CHEMICAL ANALYSIS
RETORTING
SAMPLE PREPARATION
SEPARATION PROCESSES
SODIUM
SULFATES
SULFITES
SULFUR
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
THIOCYANATES
THIOSULFATES
WASTE WATER
WASTES
WATER