Science Inventory

Background information for the Leaching environmental Assessment Framework (LEAF) test methods

Citation:

Garrabrants, A. C., D. S. Kosson, H. A. van der Sloot, F. Sanchez, AND O. Hjelmar. Background information for the Leaching environmental Assessment Framework (LEAF) test methods. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-10/170, 2011.

Impact/Purpose:

EPA report

Description:

The U.S. Environmental Protection Agency Office of Resource Conservation and Recovery has initiated the review and validation process for four leaching tests under consideration for inclusion into SW-846: Method 1313 "Liquid-Solid Partitioning as a Function of Extract pH for Constituents in Solid Materials using a Parallel Batch Extraction Procedure" Method 1314 "Liquid-Solid Partitioning as a Function of Liquid-Solid Ratio for Constituents in Solid Materials using an Up-flow Percolation Column Procedure" Method 1315 "Mass Transfer Rates of Constituents in Monolithic or Compacted Granular Materials using a Semi-dynamic Tank Leaching Procedure" Method 1316 "Liquid-Solid Partitioning as a Function of Liquid-Solid Ratio for Constituents in Solid Materials using a Parallel Batch Extraction Procedure" These protocols are derived from published leaching methods contained in the Leaching Environmental Assessment Framework (LEAF), an integrated set of testing methods, data management tools, and report support. The methods comprise a suite of available leaching tests, including batch, column and tank tests, which may be interpreted individually or integrated to provide characteristic leaching behavior of a solid material over a range of potential release scenarios. LEAF also includes tools for visualizing leaching data and significantly facilitating data management through the LeachXS Lite expert leaching system software program. LEAF represents a considerable shift in leaching assessment methodology from current approaches which are typically based on single-point pH tests and not necessarily reflective of management conditions. Thus, this document provides the required background necessary to understand the development, application, and use of these four test methods. The document includes sections on an overview of the leaching process, selection of test parameters, and estimates of the time, material and costs required.

URLs/Downloads:

Background Information for the LEAF Test Methods

NRMRL Pubs Website

Record Details:

Record Type: DOCUMENT (PUBLISHED REPORT/REPORT)
Product Published Date: 02/23/2011
Record Last Revised: 08/17/2011
OMB Category: Other
Record ID: 231332

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

AIR POLLUTION PREVENTION AND CONTROL DIVISION

ATMOSPHERIC PROTECTION BRANCH