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Cited by 17 publications
(4 citation statements)
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“…During coal processing such as pyrolysis, liquefaction, gasification and combustion, significant quantities of toxic trace elements can be released to the atmosphere causing severe environmental problems (water, air and soil pollution) [1,2]. Some of these trace element contaminants are corrosive in nature and can cause damages to the combustion reactors which might lead to the reduction of the reactor lifespan [3].…”
Section: Introductionmentioning
confidence: 99%
“…During coal processing such as pyrolysis, liquefaction, gasification and combustion, significant quantities of toxic trace elements can be released to the atmosphere causing severe environmental problems (water, air and soil pollution) [1,2]. Some of these trace element contaminants are corrosive in nature and can cause damages to the combustion reactors which might lead to the reduction of the reactor lifespan [3].…”
Section: Introductionmentioning
confidence: 99%
“…The IUPAC MLOD and MLOQ under optimized conditions were obtained from the signals of 15 successive measurements of the blank and the slope (gradient) of the calibration curve. The MLODs are dened as the lowest concentrations of the analyte giving a signal equal to three times the standard deviation (SD) of the blank signals multiplied by the dilution factor as presented in eqn (2). On the other hand, MLOQs are expressed as the lowest concentrations of the analyte giving a signal equal to ten times the SD of the blank signal multiplied by the dilution factor as illustrated in eqn (3).…”
Section: Analytical Performancesmentioning
confidence: 99%
“…1 However, coal is an impure fossil fuel which contains a number of impurities such as minerals, sulphur (S), nitrogen (N) and ash. 2 Among the periodic table elements, S is known as one of the most dominating contaminants in coal and it is usually present in four forms (mode of occurrence). The sulphur forms include sulphate minerals, sulphide minerals (predominantly pyrite), elemental sulphur and organosulphur compounds within the organic framework of coal.…”
Section: Introductionmentioning
confidence: 99%
“…There have been many studies applying extraction methods to recover useful components from brown coal, such as supercritical gas extraction [2], supercritical fluid extraction [3,4], alkali extraction [5], solvent extraction [6][7][8], and hydrothermal extraction [9][10][11][12][13][14][15].…”
Section: Introductionmentioning
confidence: 99%