We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
  • ASTM E 1625 : 1994 : R2008

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
    Add to Watchlist
    This Standard has been added successfully to your Watchlist.
    Please visit My Watchlist to see all standards that you are watching.
    Please log in or to add this standard to your Watchlist.
    We could not add this standard to your Watchlist.
    Please retry or contact support for assistance.
    You need to be logged in to add this standard to your Watchlist.
    Please log in now or create an account to add.
    You already added this Product in the Watchlist.

    Standard Test Method for Determining Biodegradability of Organic Chemicals in Semi-Continuous Activated Sludge (SCAS) (Withdrawn 2013)

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  15-03-2013

    Language(s):  English

    Published date:  01-02-2008

    Publisher:  American Society for Testing and Materials

    Add to Watchlist

    Add To Cart

    Abstract - (Show below) - (Hide below)

    CONTAINED IN VOL. 11.06, 2012 Describes the procedures for the determination of the biodegradability or removability, or both, of nonvolatile organic chemicals using a laboratory bench scale test and activated sludge from a domestic wastewater treatment plant.

    Scope - (Show below) - (Hide below)

    1.1 This test method covers procedures for the determination of the biodegradability or removability, or both, of nonvolatile organic chemicals (Henry's Constant <103 atm/m3/day) using a laboratory bench scale test and activated sludge from a domestic wastewater treatment plant.

    1.2 This test method is derived from a procedure developed for surfactants by the Soap and Detergent Association (1, 2), one developed for alkylbenzene sulfonates by ASTM (see Test Method D 2667) and one developed by the Organization for Economic Cooperation and Development (OECD) for assessing inherent biodegradation (3) and also codified in the Toxic Substances Control Act Test Guidelines (4). For assessment of variability, replicate test systems (three or more) should be employed. It is recommended that the tests be used for chemical compounds that can be well characterized with respect to chemical and physical properties. Testing of mixtures or fully formulated products can lead to serious problems in data interpretations.

    1.3 The procedures involve the exposure of the test chemical(s) to activated sludge mixed liquor microorganisms over a finite time cycle in specially designed aeration chambers. Biodegradability is determined from dissolved organic carbon (DOC) measurements, from radiochemical analyses, or from measurements of test chemical concentration using a specific analytical method. Based on DOC analyses alone, biodegradation can only be claimed if other removal mechanisms (for example, adsorption, volatility, or chemical transformation) are discounted by means of specific testing or knowledge of physical chemical properties of the test chemical. Modifications of this test method for water insoluble and moderately volatile chemicals are presented in this test method and principles are described in somewhat more detail elsewhere (see 5, 6).

    1.4 These procedures may also be used as a means of acclimating microorganisms to an organic chemical over an extended period. The acclimated microorganisms may be used as an inoculum source for other biodegradation tests.

    1.5 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. For specific hazard statements see Section 7 and in Note 1.

    General Product Information - (Show below) - (Hide below)

    Committee E 47
    Document Type Test Method
    Product Note Reconfirmed 2008
    Publisher American Society for Testing and Materials
    Status Withdrawn
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ASTM D 1129 : 2013 : REDLINE Standard Terminology Relating to Water
    ASTM D 2777 : 2013 : REDLINE Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
    ASTM D 2579 : 1993 : EDT 1 Standard Test Method for Total Organic Carbon in Water (Withdrawn 2002)
    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective