GB/T 7702.6-2008 Test method for granular activated carbon from coal — Determination of methylene blue adsorption
1 Scope
This part specifies the principles, procedures and result calculations for the determination of methylene blue adsorption of granular activated carbon from coal.
This part is applicable to the determination of methylene blue adsorption of granular activated carbon from coal, as well as powdered activated carbon from coal.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 7702. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 601-2002 Chemical reagent - Preparations of reference titration solutions
GB/T 625 Chemical reagent - Sulfuric acid (GB/T 625-2007, ISO 6353-2: 983, NEQ)
GB/T 665 Chemical reagent - Copper(Ⅱ) sulfate pentahydrate (GB/T 665-2007, ISO 6353-2:1983, NEQ)
GB/T 1263 Chemical reagent - Disodium hydrogen phosphate dodecahydrate (GB/T 1263-2006, ISO 6353-2:1983, NEQ)
GB/T 1272 Chemical reagent - Potassium iodide (GB/T 1272-2007, ISO 6353-2:1983, NEQ)
GB/T 1274 Chemical reagents - Potassium dihydrogen phosphate (GB/T 1274-1993, neq ISO 6353-3:1987 R79)
GB/T 1914 Chemical analytical filter paper
GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-1992, neq ISO 3696:1987)
3 Terms and definitions
For the purposes of this part of GB/T 7702, the following term and definition applies.
3.1
laboratory sample
sample as prepared for sending to the laboratory and intended for inspection or testing
3.2
test sample
sample extracted from the test portion in the prepared laboratory sample
3.3
test portion
a certain amount of material obtained from the test sample (if the test sample is the same as the laboratory sample, then it is obtained from the laboratory sample), and used for testing or observation
3.4
methylene blue adsorption
under the specified test conditions, after the activated carbon and the methylene blue solution have fully adsorbed, when the remaining concentration of the methylene blue solution reaches the specified range, the milligram amount of methylene blue adsorbed per gram of activated carbon
4 Principle
The sample was mixed with the methylene blue solution, and after sufficient adsorption, the remaining concentration of the methylene blue solution was measured, and the methylene blue adsorption can be calculated.
5 Reagents and materials
5.1 Water, Grade 3 water as defined in GB/T 6682.
5.2 Qualitative filter paper (see GB/T 1914), Grade B, medium speed (102).
5.3 Sulfuric acid solution, prepare a 1+5 sulfuric acid solution with sulfuric acid (GB/T 625, analytical purity).
5.4 Iodized potassium solution, prepare a 10% iodized potassium solution with iodized potassium (GB/T 1272, analytical purity).
5.5 Copper sulfate standard color solution, prepare a 0.4% copper sulfate standard color solution with an anhydrous copper sulfate (II) (GB/T 665, analytical purity).
5.6 Buffer solution: Mix the solution a and solution b in a 1:1 volume ratio to obtain a buffer solution with a pH value of approximately 7.
Contents
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
8 Determination procedures
9 Calculation of results
10 Precision
11 Test report
GB/T 7702.6-2008 Test method for granular activated carbon from coal — Determination of methylene blue adsorption
1 Scope
This part specifies the principles, procedures and result calculations for the determination of methylene blue adsorption of granular activated carbon from coal.
This part is applicable to the determination of methylene blue adsorption of granular activated carbon from coal, as well as powdered activated carbon from coal.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 7702. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 601-2002 Chemical reagent - Preparations of reference titration solutions
GB/T 625 Chemical reagent - Sulfuric acid (GB/T 625-2007, ISO 6353-2: 983, NEQ)
GB/T 665 Chemical reagent - Copper(Ⅱ) sulfate pentahydrate (GB/T 665-2007, ISO 6353-2:1983, NEQ)
GB/T 1263 Chemical reagent - Disodium hydrogen phosphate dodecahydrate (GB/T 1263-2006, ISO 6353-2:1983, NEQ)
GB/T 1272 Chemical reagent - Potassium iodide (GB/T 1272-2007, ISO 6353-2:1983, NEQ)
GB/T 1274 Chemical reagents - Potassium dihydrogen phosphate (GB/T 1274-1993, neq ISO 6353-3:1987 R79)
GB/T 1914 Chemical analytical filter paper
GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-1992, neq ISO 3696:1987)
3 Terms and definitions
For the purposes of this part of GB/T 7702, the following term and definition applies.
3.1
laboratory sample
sample as prepared for sending to the laboratory and intended for inspection or testing
3.2
test sample
sample extracted from the test portion in the prepared laboratory sample
3.3
test portion
a certain amount of material obtained from the test sample (if the test sample is the same as the laboratory sample, then it is obtained from the laboratory sample), and used for testing or observation
3.4
methylene blue adsorption
under the specified test conditions, after the activated carbon and the methylene blue solution have fully adsorbed, when the remaining concentration of the methylene blue solution reaches the specified range, the milligram amount of methylene blue adsorbed per gram of activated carbon
4 Principle
The sample was mixed with the methylene blue solution, and after sufficient adsorption, the remaining concentration of the methylene blue solution was measured, and the methylene blue adsorption can be calculated.
5 Reagents and materials
5.1 Water, Grade 3 water as defined in GB/T 6682.
5.2 Qualitative filter paper (see GB/T 1914), Grade B, medium speed (102).
5.3 Sulfuric acid solution, prepare a 1+5 sulfuric acid solution with sulfuric acid (GB/T 625, analytical purity).
5.4 Iodized potassium solution, prepare a 10% iodized potassium solution with iodized potassium (GB/T 1272, analytical purity).
5.5 Copper sulfate standard color solution, prepare a 0.4% copper sulfate standard color solution with an anhydrous copper sulfate (II) (GB/T 665, analytical purity).
5.6 Buffer solution: Mix the solution a and solution b in a 1:1 volume ratio to obtain a buffer solution with a pH value of approximately 7.
Contents of GB/T 7702.6-2008
Contents
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of test samples
8 Determination procedures
9 Calculation of results
10 Precision
11 Test report
