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  • ASTM
    C400-98(2013) Standard Test Methods for Quicklime and Hydrated Lime for Neutralization of Waste Acid
    Edition: 2013
    $82.37
    Unlimited Users per year

Description of ASTM-C400 2013

ASTM C400 - 98(2013)

Standard Test Methods for Quicklime and Hydrated Lime for Neutralization of Waste Acid

Active Standard ASTM C400 | Developed by Subcommittee: C07.05

Book of Standards Volume: 04.01




ASTM C400

Significance and Use

4.1 Since all limes and waste acid solutions are different, this test method evaluates the relative quantity of a given lime needed for the neutralization of a specific quantity of acid.

4.2 Liming materials have a specific basicity factor or measure of alkalinity which can be used for comparing their relative neutralizing power. It avoids dependence on chemical analysis and is determined as grams of calcium oxide equivalents per kilogram of liming material.

4.3 Likewise, specific waste acids have an acid value that can be expressed as grams of hydrochloric acid equivalent per litre of acid waste. This value is related on a stoichiometric basis to lime neutralization requirements of a liquid acid waste.

1. Scope

1.1 This test method covers the testing of quicklime and hydrated lime for use in the treatment of waste acid solutions and includes the characterization of the liming material and of the acid waste.

Note 1 When agreed upon by the manufacturer and the purchaser, this method may be used directly to evaluate the lime requirement for a plant waste acid and in the preparation of the lime slurry; the pH, the time, temperature, and other conditions of treatment may be adjusted to conform to plant practice. Otherwise the test shall be performed as described in this method.
Note 2 Under some conditions of test the lime requirement may vary substantially from that indicated by ultimate chemical analysis or by the use of a determination of available alkalinity by titration to a stoichiometric end point.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C50 Practice for Sampling, Sample Preparation, Packaging, and Marking of Lime and Limestone Products

E70 Test Method for pH of Aqueous Solutions With the Glass Electrode


Keywords

acid value; alkalinity; basicity; lime requirement; liming material; neutralization; neutralization coefficient; pH; waste acid;


ICS Code

ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)


DOI: 10.1520/C0400

ASTM International is a member of CrossRef.

ASTM C400

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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