BS EN 14429:2015 – TC:2020 Edition
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Tracked Changes. Characterization of waste. Leaching behaviour test. Influence of pH on leaching with initial acid/base addition
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 116 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 64 | 0BContents Page Contents Page |
| 66 | Foreword |
| 67 | Introduction |
| 69 | 1 Scope 2 Normative references 3 Terms and definitions |
| 70 | 4 Symbols and abbreviations |
| 71 | 5 Principle 6 Reagents |
| 72 | 7 Equipment 7.1 General 7.2 Laboratory equipment |
| 73 | 8 Sample preparation 8.1 Laboratory sample 8.2 Preparation of the test sample 8.3 Determination of dry residue |
| 74 | 8.4 Preparation of the test portion 9 Procedure 9.1 Contact time 9.2 pH range |
| 75 | 9.3 Leaching test 9.3.1 General 9.3.2 Preparation of leachant |
| 76 | 9.3.3 Leaching procedure |
| 77 | 9.4 Natural pH |
| 78 | 10 Eluate treatment, storage and analysis 11 Blank test 12 Performance characteristics |
| 79 | Table 1 — Typical values and observed ranges of the repeatability and reproducibility limits 13 Test report |
| 81 | Annex A (informative) Example of a data sheet Table A.1 — An example of a data sheet for the recording of test results |
| 82 | Annex B (informative) Operation and uses of the test — Influence of pH on the leaching behaviour B.1 Clarification of the two modes of operation of the test: influence of pH on the leaching behaviour |
| 83 | Figure B.1 — Typical pH variations during the two modes of the tests for determining the influence of pH on the leaching behaviour of an alkaline material at a final pH around 5 |
| 84 | B.2 Expression of results B.3 Scope and limits of the application field of the test B.3.1 Remarks on the use of pH dependence test results to assess the effects of ageing |
| 85 | B.3.2 Examples of test result use and considerations on scope |
| 86 | B.4 Example: Identification of the sensitivity of leaching to pH over the environmentally relevant pH range Figure B.2 — Illustration of the influence of pH on the leaching behaviour of a heavily sewage sludge amended soil as obtained in a pH range 2 – 12 (test performed with initial acid/base addition) its use in relation to different scenarios for the sam… |
| 87 | Annex C (informative) Preliminary determination of the acid/base consumption C.1 General C.2 Titration procedure to estimate the ANC and the BNC C.2.1 Reagents and laboratory devices C.2.2 Test portion C.2.3 Procedure C.2.3.1 Preparation |
| 88 | C.2.3.2 Natural pH C.2.3.3 Acid titration C.2.3.4 Base addition |
| 89 | C.2.4 Expression of results C.3 Arbitrary division of the maximum acid/base consumption for the extreme pH values C.3.1 General C.3.2 Reagents and laboratory devices C.3.3 Test portion C.3.4 Procedure C.3.4.1 Preparation |
| 90 | C.3.4.2 Natural pH C.3.4.3 Acid titration C.3.4.4 Base addition C.3.5 Expression of results |
| 92 | Annex D (informative) Examples of acid and base neutralization capacities for waste, soil, sediment and construction materials D.1 Examples of acid and base neutralization capacities |
| 93 | Figure D.1 — Acid/base neutralization curves for a wide range of materials |
| 94 | D.2 Use of acid and base neutralization capacity data |
| 95 | Annex E (informative) Repeatability and reproducibility data E.1 Materials used in the interlaboratory comparison study Table E.1 — Material types tested and substances analyzed in the interlaboratory comparison of the pH dependent leaching behaviour of substances from waste and stabilized waste E.2 Interlaboratory comparison results |
| 96 | Table E.2 — Results of the interlaboratory comparison studies of the pH dependent leaching behaviour of substances from waste and stabilized waste (Part 1) |
| 102 | Table E.3 — Results of the interlaboratory comparison studies of the pH dependent leaching behaviour of substances from waste and stabilized waste (Part 2) |
| 113 | Bibliography |
