Leaching of heavy metal can be a concern as heavy metal contaminated sludge is introduced to the finished products. It should be confirmed that leaching of heavy metal from bricks does not exceed the maximum permissible limit even under extreme conditions. The leaching efficiency was defined as the ratios of concentration of the heavy metal in the original sample and leachate of the sample
Hi, Ranjet
May be, this link will be useful to you!
https://www.epa.gov/sites/production/files/2013-09/documents/metals-risk-assessment-final.pdf
Hazardous Wastes (Management, Handling and Transboundary Movement) Rules, 2008
IS 9806 (2001): Methods of Test for and Permissible Limits of Toxic Materials Released from Ceramicware, Vitreous Enamelware, Glassware and Glass-cerami
TCLP regulatory limits given by United States Environment Protection Agency (USEPA) and Germany Leachate Quality Standards.
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